Power supply and load allocation method

Abstract

A power supply comprises a conversion circuit, an auxiliary power supply circuit and an output control circuit. The conversion circuit converts the DC power supply into a first output power supply, and the auxiliary power supply circuit converts the DC power supply into a first auxiliary power supply. The output control circuit is used for selectively connecting the first output end and the second output end, so that when the output control circuit disconnects the first output end and the second output end, the first output power supply supplies power to the key load through the first output end, and when the output control circuit connects the first output end and the second output end, the second output power supply supplies power to the key load through the second output end. The first output power supply supplies power to the critical load and the non-critical load through the first output end and the second output end respectively.

Description

Technical Field

[0001] The present disclosure relates to a power supply and a load allocation method, and more particularly to a power supply and a load allocation method that improve efficiency through a load allocation function. Background Art

[0002] In the technical field of electronic products, most of the power sources are provided by power supplies (PSU; Power Supply Unit). Therefore, power supplies have become an indispensable device for electronic products. Under this framework, in response to the latest energy efficiency requirements, in addition to improving the efficiency of the main power supply circuit of the power supply as much as possible, the power loss of the auxiliary power supply must also be considered. The main reason is that if you only consider improving the efficiency of the main power supply circuit without considering how to reduce the power loss of the auxiliary power supply, it will inevitably lead to a decrease in power density and a loss of efficiency.

[0003] Specifically, if Figure 1 As shown, in the prior art, the power supply 100 generally includes a power factor correction (PFC) circuit PFC, a main conversion circuit 1 and an auxiliary power supply circuit 2. The main conversion circuit 1 and the auxiliary power supply circuit 2 are coupled to the power factor correction circuit PFC, and the power factor correction circuit PFC is mainly used to convert the AC input power Pin into a DC power Pdc and perform power factor correction on the input power Pin. The main conversion circuit 1 is mainly used to convert the DC power Pdc into a main output power Pm to provide the main output power Pm to power the key load Load_C coupled to the back end (for example, but not limited to a central processing unit, a main control system, etc., which require high power). The auxiliary power supply circuit 2 is mainly used to convert the DC power Pdc into an auxiliary power Pa to provide the auxiliary power Pa to power the non-critical load Load_NC coupled to the back end (for example, but not limited to, a fan, a microcontroller inside the power supply, etc., which require less power).

[0004] Therefore, how to design a power supply and a load adjustment method to provide load adjustment capability through efficient output operation of the power supply is a major research topic that the inventors of the present disclosure intend to conduct. Summary of the invention

[0005] In order to solve the above problems, the present disclosure provides a power supply to overcome the problems of the prior art. Therefore, the power supply of the present disclosure includes a conversion circuit, an auxiliary power supply circuit and an output control circuit. The conversion circuit converts the DC power supply into a first output power supply, and is used to couple the critical load through the first output terminal, so as to provide the first output power supply to power the critical load through the first output terminal. The auxiliary power supply circuit converts the DC power supply into a first auxiliary power supply. The output control circuit couples the first output terminal and the second output terminal, and the second output terminal is used to couple the non-critical load. Among them, the output control circuit is used to selectively connect the first output terminal and the second output terminal, so that when the output control circuit disconnects the first output terminal and the second output terminal, the first output power supply supplies power to the critical load through the first output terminal, and when the output control circuit connects the first output terminal and the second output terminal, the first output power supply supplies power to the critical load and the non-critical load through the first output terminal and the second output terminal respectively.

[0006] In order to solve the above problems, the present disclosure provides a power supply to overcome the problems of the prior art. Therefore, the power supply of the present disclosure includes a conversion circuit, an auxiliary power supply circuit and an output control circuit. The conversion circuit converts the DC power supply into a first output power supply, and is used to couple the critical load through the first output terminal to provide the first output power supply to power the critical load through the first output terminal. The auxiliary power supply circuit converts the DC power supply into a first auxiliary power supply, and the output control circuit couples the first output terminal and the auxiliary power supply circuit. Wherein, when the first output terminal has a backup requirement, the output control circuit connects the first output terminal and the auxiliary power supply circuit to provide the first auxiliary power provided by the auxiliary power supply circuit to the first output terminal through the output control circuit.

[0007] In order to solve the above problems, the present invention provides a load allocation method for a power supply to overcome the problems of the prior art. Therefore, the power supply of the present invention is used to power a critical load through a first output terminal, and to power a non-critical load through a second output terminal. The steps of the load allocation method first include controlling the conversion circuit to convert a DC power supply into a first output power supply, and controlling the auxiliary power supply circuit to convert the DC power supply into a first auxiliary power supply. Then, (a1) determine that the conversion circuit is operating normally and the first output power supply still has a margin. (a2) Connect the first output terminal and the second output terminal so that the conversion circuit provides a second auxiliary power supply to the second output terminal. And, (b1) determine that the conversion circuit is operating normally and the first output power supply has no margin. (b2) Connect the second output terminal and the auxiliary power supply circuit so that the auxiliary power supply circuit provides a first auxiliary power supply to the second output terminal.

[0008] The main purpose and technical effect of the present disclosure is that, in order to improve the efficiency of a single power supply, the present disclosure further transfers the non-critical load borne by the auxiliary power supply circuit to the high-efficiency conversion circuit through the control of the output control circuit. In this way, the ability of load allocation can be provided through the efficient output operation of the power supply, thereby achieving the technical effect of improving the efficiency of the power supply.

[0009] In order to further understand the technologies, means and technical effects adopted by the present disclosure to achieve the intended purpose, please refer to the following detailed description and drawings of the present disclosure. It is believed that the purpose, characteristics and features of the present disclosure can be understood in depth and in detail. However, the drawings are only provided for reference and illustration and are not intended to limit the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 A circuit block diagram of a power supply of the prior art;

[0011] Figure 2A is a circuit block diagram of a first embodiment of the power supply disclosed herein;

[0012] Figure 2B is a circuit block diagram of a second embodiment of the power supply disclosed herein;

[0013] Figure 3A is a circuit block diagram of a first embodiment of an output control circuit disclosed in the present invention;

[0014] Figure 3B is a circuit block diagram of a first embodiment of the switch circuit disclosed in the present invention;

[0015] Figure 3C is a circuit block diagram of a second embodiment of the switch circuit disclosed in the present invention;

[0016] Figure 4A is a circuit block diagram of a second embodiment of the output control circuit disclosed in the present invention;

[0017] Figure 4B is a circuit block diagram of a third embodiment of the output control circuit disclosed in the present invention;

[0018] Figure 4C is a circuit block diagram of a fourth embodiment of the output control circuit disclosed in the present invention;

[0019] Figure 4D is a circuit block diagram of a fifth embodiment of the output control circuit disclosed in the present invention;

[0020] Figure 5 is a circuit block diagram of a sixth embodiment of the output control circuit disclosed in the present invention;

[0021] Fig. 6AA load dispatching curve diagram of the first embodiment of the hybrid power supply mode disclosed in the present invention;

[0022] Figure 6B A load dispatching curve diagram of the second embodiment of the hybrid power supply mode disclosed herein;

[0023] Figure 7 A flow chart of a load allocation method of a power supply disclosed in the present invention;

[0024] Figure 8 A circuit block diagram of a power supply device of the related art;

[0025] Fig.9A is a circuit block diagram of a first embodiment of a power supply device disclosed herein;

[0026] Fig. 9B is a circuit block diagram of a second embodiment of the power supply device disclosed in the present invention;

[0027] Fig. 9C is a circuit block diagram of a third embodiment of the power supply device disclosed in the present invention;

[0028] Fig. 10A for Figure 2A A schematic diagram of a curve showing that the maximum efficiency of the conversion circuit used as an example is 98%;

[0029] Fig. 10B for Figure 2A A schematic diagram of a curve showing that the maximum efficiency of the auxiliary power supply circuit is 92%;

[0030] Fig.11 A flowchart of the operating method of the power supply device disclosed in the present invention; and

[0031] Fig.12 The circuit structure diagram is a circuit diagram of a switch circuit of the present disclosure configured on a circuit board of a power supply.

[0032] Description of reference numerals:

[0033] PSU_S: Power supply unit

[0034] MCU: System Controller

[0035] 5: Cabinet

[0036] 5-1~5-6: Accommodation space

[0037] 100, 100-1~100-6: Power supply

[0038] PFC: Power Factor Correction Circuit

[0039] 1: Main conversion circuit, conversion circuit

[0040] 2: Auxiliary power supply circuit

[0041] 3: Output control circuit

[0042] 32: Switching circuit

[0043] IC: control chip

[0044] SMD PCB: Circuit Board

[0045] 322: Switch

[0046] 324: Control Circuit

[0047] NOT: Reverse gate

[0048] NAND: NAND gate

[0049] D: One-way conducting element

[0050] 34: DC conversion circuit

[0051] 36: Bypass switch

[0052] 38, 40: Protection switch

[0053] SW: Three-terminal switch

[0054] 4: Control module

[0055] A: First output terminal

[0056] B: Second output terminal

[0057] C: The third output terminal

[0058] Load_C: Critical load

[0059] Load_NC: Non-critical load

[0060] MB: Main circuit board

[0061] MB_B: Back side

[0062] SA: Specific Area

[0063] Pin: Pin

[0064] Pin: Input power

[0065] Pdc: Direct current power supply

[0066] Pm: Main output power

[0067] Pa: Auxiliary power supply

[0068] Po1: first output power

[0069] Po2: Second output power

[0070] Pa1: First auxiliary power supply

[0071] Pa2: Second auxiliary power supply

[0072] Vo: output voltage

[0073] Va: auxiliary voltage

[0074] CL: Control Command

[0075] UVLO1, UVLO2: Undervoltage lockout value

[0076] In: demand current

[0077] Im, Ia: output current

[0078] Im: first output current

[0079] Ia: Second output current

[0080] IA, IB: current

[0081] (S100)~(S320), (S400)~(S440): Steps DETAILED DESCRIPTION

[0082] The technical content and detailed description of the present disclosure are described as follows with reference to the accompanying drawings:

[0083] [Technical Solution 1: Load Allocation Mechanism]

[0084] See also Figure 2A is a circuit block diagram of the first embodiment of the power supply disclosed in the present invention, and is also referred to in conjunction with Figure 1. The power supply 100 includes a power factor correction circuit PFC, a main conversion circuit 1 (hereinafter referred to as the conversion circuit 1), an auxiliary power supply circuit 2, an output control circuit 3 and a control module 4, and the power factor correction circuit PFC is coupled to the input end of the conversion circuit 1 and the auxiliary power supply circuit 2. Further, the power supply 100 includes a first output end A, a second output end B and a third output end C, and the output end of the conversion circuit 1 is the first output end A. The first output end A is coupled to one end of the output control circuit 3, and the first output end A is mainly used to couple the critical load Load_C. The other end of the output control circuit 3 is the second output end B, and the second output end B is mainly used to couple the non-critical load Load_NC. The output end of the auxiliary power supply circuit 2 is the third output end C, and the third output end C is coupled to the output control circuit 3. It is worth mentioning that in one embodiment, the conversion circuit 1, for example but not limited to, can be a resonant converter (for example but not limited to LLC, CLLC and other converters with resonant function), and the auxiliary power supply circuit 2, for example but not limited to, can be a flyback converter, but is not limited to this. All converters that are applicable and commonly used in the power supply 100 should be included in the scope of this embodiment.

[0085] The control module 4 receives the control command CL provided by the system controller, the critical load Load_C and / or the non-critical load Load_NC, and controls the power factor correction circuit PFC, the conversion circuit 1, the auxiliary power circuit 2, and the output control circuit 3 accordingly to control the power supply 100 to supply power to the critical load Load_C and the non-critical load Load_NC. Specifically, the power factor correction circuit PFC is mainly used to convert the AC input power Pin into a DC power Pdc, and perform power factor correction on the input power Pin. The conversion circuit 1 can convert the DC power Pdc into a main output power (hereinafter referred to as the first output power Po1), and can provide the first output power Po1 through the first output terminal A to supply power to the critical load Load_C. The auxiliary power circuit 2 can convert the DC power Pdc into an auxiliary power (hereinafter referred to as the first auxiliary power Pa1) to provide the first auxiliary power Pa1 to the third output terminal C.

[0086] It is worth mentioning that, in one embodiment, the control module 4 can control the power supply 100 according to the control command CL, and a part of it can also control the power supply 100 by receiving signals provided by the power factor correction circuit PFC, the conversion circuit 1, the auxiliary power supply circuit 2, and the output control circuit 3 (for example, but not limited to feedback signals associated with voltage and current, etc.). On the other hand, the control module 4 can include one or more controllers. For example, but not limited to, the power factor correction circuit PFC, the conversion circuit 1, the auxiliary power supply circuit 2, and the output control circuit 3 are each controlled by a controller, and these controllers are combined with circuits such as, but not limited to, detection and compensation to form the control module 4. Alternatively, the control module 4 includes a single controller, and the power factor correction circuit PFC, the conversion circuit 1, the auxiliary power supply circuit 2, and the output control circuit 3 are controlled by this single controller. In addition, in one embodiment, various detections, judgments, and controls of the power supply 100 can be implemented by the control module 4. However, in order to avoid blurring the main features of the present disclosure, unless the implementer of detection, judgment, and control is specifically specified in the text, the implementers of various detections, judgments, and controls in the following text may all be the control module 4.

[0087] Further, the conversion circuit 1 can output power of, for example, but not limited to, 250W, and the auxiliary power circuit 2 can output power of, for example, but not limited to, 36W. However, under normal conditions, the auxiliary power circuit 2 requires high stability and a wide operating range (for example, but not limited to 3.3V, 5V, 12V), and its operating point of optimal efficiency is usually not under normal operating conditions, resulting in the inability to effectively improve the efficiency of the auxiliary power circuit 2. Therefore, the maximum efficiency that the auxiliary power circuit 2 (efficiency is, for example, but not limited to, less than 92%) can reach is often worse than that of the conversion circuit 1 (efficiency is, for example, but not limited to, 98%), and the efficiency difference between the two is usually more than 5%. It is worth mentioning that in one embodiment, if not specifically specified herein, the "power supply" can be equivalently regarded as "power", and its relationship with voltage and current can be inferred based on basic electrical principles.

[0088] Among them, the main feature of the present disclosure is that the conversion circuit 1 and the auxiliary power supply circuit 2 of the present disclosure can be adjusted to provide power to the critical load Load_C and the non-critical load Load_NC through the actuation of the output control circuit 3. Specifically, the output control circuit 3 can be mainly used to selectively connect the first output terminal A and the second output terminal B. In this way, when the output control circuit 3 disconnects the first output terminal A and the second output terminal B, the first output power Po1 provided by the conversion circuit 1 can supply power to the critical load Load_C through the first output terminal A. And, when the output control circuit 3 connects the first output terminal A and the second output terminal B, the first output power Po1 provided by the conversion circuit 1 can supply power to the critical load Load_C and the non-critical load Load_NC through the first output terminal A and the second output terminal B, respectively. In this way, the loads of the conversion circuit 1 and the auxiliary power supply circuit 2 can be adjusted to maximize the efficiency of the power supply 100.

[0089] 1. Power supply high efficiency output mode

[0090] In practice, since the auxiliary power supply circuit 2 requires a wider range of more stringent working conditions, the auxiliary power supply circuit 2 needs to use quite complex circuits to achieve the 92% efficiency in the example. Please refer to Table 1 below for the efficiency / power parameter table of the conversion circuit 1 and the auxiliary power supply circuit 2 for powering the non-critical load Load_NC. In Table 1, it is assumed that the auxiliary power supply circuit 2 can output 36W of power, with an operating efficiency of 92%, and it is assumed that the operating efficiency of the conversion circuit 1 is 98%. Calculated under the above conditions, the power loss corresponding to the load of the auxiliary power supply circuit 2 at half load will reach 19.565W. On the contrary, if this load is replaced by the more efficient conversion circuit 1, its power loss is only 18.367W. Therefore, the power loss difference between the two is 1.197W, and the power loss difference of 1.197W will improve the overall efficiency by 0.479%. Therefore, in order to improve the efficiency of the single power supply 100, the present disclosure further transfers the load borne by the auxiliary power circuit 2 to the high-efficiency conversion circuit 1 through the control of the output control circuit 3, so as to achieve the technical effects of reducing the loop loss of the power supply 100, improving the power density and improving the efficiency.

[0091] Table 1: Efficiency / power parameters of the conversion circuit and auxiliary power circuit for powering non-critical loads.

[0092]

[0093] Specifically, the power supply 100 disclosed in the present invention can operate normally in the conversion circuit 1, and when the first output power Po1 still has margin, the output control circuit 3 connects the first output terminal A and the second output terminal B, so that the conversion circuit 1 provides the second auxiliary power Pa2 to the second output terminal B through the path from the first output terminal A to the second output terminal B of the output control circuit 3. In this way, the non-critical load Load_NC can be powered by the second auxiliary power supply Pa2, and the load borne by the auxiliary power circuit 2 can be transferred to the high-efficiency conversion circuit 1 through the control of the output control circuit 3. In this way, the ability of load allocation can be provided through the efficient output operation of the power supply 100, thereby achieving the technical effect of improving the efficiency of the power supply 100. On the other hand, since the auxiliary power circuit 2 is not the main burden of the load at this time, the control module 4 can adjust the auxiliary power circuit 2 to standby, sleep, or temporarily shut down the auxiliary power circuit 2 based on the consideration of saving power consumption, and restore it to normal operation when the auxiliary power circuit 2 is required to supply power. On the contrary, when the conversion circuit 1 operates normally but the first output power supply Po1 has no margin (for example but not limited to full load), the output control circuit 3 connects the second output terminal B and the output terminal of the auxiliary power supply circuit 2 (i.e., the third output terminal C), so that the auxiliary power supply circuit 2 provides the first auxiliary power supply Pa1 to the second output terminal B through the output control circuit 3, so that the non-critical load Load_NC can be powered by the first auxiliary power supply Pa1.

[0094] It is worth mentioning that, in one embodiment, the "margin" is not just the power difference between the current first output power Po1 (i.e., the current output power) and the full load power. Specifically, since the critical load Load_C is usually the main controller of the entire system, its power demand is usually more important and must be met as soon as possible. Therefore, when the critical load Load_C instantly increases the extraction capacity to full load, the power supply 100 needs to have the ability to temporarily make up for its demand. However, if the upper limit of the "margin" is set at full load, the power supply source of the non-critical load Load_NC may not be able to be quickly switched to be supplied by the auxiliary power circuit 2. Therefore, the control module 4 preferably sets the margin to the full load power minus a specific value, and the specific value is a value that can temporarily respond to the critical load Load_C instantaneously increasing the extraction capacity to full load (for example, the full load output power of the conversion circuit 1 is 250W, and the specific value can be set to 10W, but is not limited to this).

[0095] 2. Extend the maintenance time mode

[0096] On the other hand, in addition to the above-mentioned control methods, the power supply 100 of the present disclosure may also include other control methods to provide additional functions. Specifically, when the first output power Po1 is not within the predetermined range, the output control circuit 3 connects the first output terminal A and the second output terminal B, so that the auxiliary power circuit 2 provides the second output power Po2 to the first output terminal A through the second output terminal B of the output control circuit 3, and temporarily supplements the output capacitor (not shown) of the conversion circuit 1 with additional power, and accordingly extends the hold-up time (Hold-Up Time) of the conversion circuit 1. In this way, the key load Load_C at the back end can have enough time to react by extending the hold-up time of the conversion circuit 1, thereby avoiding the situation of losing important data. Then, when the control module 4 determines that the hold-up time has been reached, it means that the key load Load_C has completed the preparatory action before closing, so the output control circuit 3 can disconnect the first output terminal A and the second output terminal B, so as to no longer provide the second output power Po2 to the first output terminal A. Among them, the reasons why the first output power Po1 is not within the predetermined range include but are not limited to the conversion circuit 1 entering overvoltage, overcurrent, low voltage protection, or the conversion circuit 1 fails, enters sleep, standby or shutdown, etc., all of which will cause the first output power Po1 to be out of the predetermined range.

[0097] On the other hand, when the power supply 100 is powered off, the auxiliary power supply circuit 2 also has no power supply and enters a state of preparing to power off. At this time, if the energy that the auxiliary power supply circuit 2 can provide is still sufficient, the output control circuit 3 can connect the first output terminal A and the second output terminal B to achieve the same effect of increasing the hold-up time of the conversion circuit. Otherwise, the conversion circuit 1 and the auxiliary power supply circuit 2 each try to extend their own hold-up time with the remaining power. At this time, the output control circuit 3 can disconnect the first output terminal A and the second output terminal B to enable the power supply 100 to perform this operation.

[0098] In summary, the power supply 100 disclosed above can selectively control the output control circuit 3 to connect the first output terminal A and the second output terminal B through the energy margin that can be provided by the auxiliary power circuit 2, thereby satisfying the ITIC (Information Technology Industry Council) AC input voltage waveform (AC input voltage envelope) specification under the control of the maintenance time.

[0099] 3. Peak power mode

[0100] In addition, the power supply 100 can also operate in a peak power mode. Specifically, in order to improve the efficiency of the standby power supply of the single power supply 100, the peak power specification is also improved. Therefore, when the first output power supply Po1 of the power supply 100 disclosed in the present invention cannot meet the power demand of the critical load Load_C (for example, the conversion circuit 1 is fully loaded with 250W, but is required by the critical load Load_C to provide a power output of 260W), the output control circuit 3 connects the first output terminal A and the second output terminal B, so that the auxiliary power supply circuit 2 provides the second output power supply Po2 to the first output terminal A through the second output terminal B of the output control circuit 3 to the first output terminal A (that is, the auxiliary power supply circuit 2 provides the remaining 10W). In this way, the first output power supply Po1 and the second output power supply Po2 can be used together to supply power to the critical load Load_C to provide overload power supply (Peak Power).

[0101] On the other hand, when the first output power source Po1 cannot meet the power demand of the critical load Load_C, and the margin of the second output power source Po2 is not enough to meet the demand, the control module 4 can notify the critical load Load_C (such as but not limited to the processing device such as the central processing unit) through systematic deployment whether it can reduce the power consumption of the non-critical load Load_NC by shutting down or reducing the frequency first, so as to temporarily free up additional power to provide to the critical load Load_C. For example, when the conversion circuit 1 is fully loaded with 250W, but is required by the critical load Load_C to provide a power output of 265W, and the auxiliary power supply circuit 2 can only provide a power output of 12W, the control module 4 can notify the critical load Load_C (such as but not limited to the processing device such as the central processing unit) through systematic deployment whether it can reduce the power consumption of the non-critical load Load_NC (i.e., 3W) by shutting down or reducing the frequency first. When the power consumption of the non-critical load Load_NC is reduced by 3W, the auxiliary power supply circuit 2 can provide an additional second output power Po2 (i.e. 12W+3W) to the first output terminal A through the second output terminal B of the output control circuit 3 to meet the needs of the critical load Load_C.

[0102] Similarly, when the first output power supply Po1 supplies power to the non-critical load Load_NC, but the margin of the first output power supply Po1 is insufficient, the conversion circuit 1 and the auxiliary power supply circuit 2 can also supply power to the non-critical load Load_NC together. Specifically, the power supply 100 can supply power to the non-critical load Load_NC at the first output power supply Po1, but when the margin of the first output power supply Po1 is insufficient (for example, the non-critical load Load_NC requires 36W, but the margin of the first output power supply Po1 is only 20W), the output control circuit 3 connects the first output terminal A and the second output terminal B, so that the auxiliary power supply circuit 2 provides the first auxiliary power Pa1 to the second output terminal B through the third output terminal C of the output control circuit 3 to the second output terminal B (that is, the auxiliary power supply circuit 2 provides the remaining 16W). In this way, the first output power supply Po1 and the second output power supply Po2 can supply power to the non-critical load Load_NC together.

[0103] See also Figure 2B This is a circuit block diagram of the second embodiment of the power supply disclosed in the present invention, and is also referred to in conjunction with Figure 2A . Figure 2B The power supply 100 and Figure 2A The difference of the power supply 100 is that Figure 2B The power supply 100 is not coupled to the non-critical load Load_NC. Therefore, the output control circuit 3 is coupled to the first output terminal A, and is coupled to the auxiliary power supply circuit 2 through the third output terminal C. Under this circuit structure, the power supply 100 can still provide the above-mentioned extended maintenance time mode and peak power mode. Specifically, regardless of the extended maintenance time mode or the peak power mode, the main reason is that the first output terminal A has a backup requirement (i.e., additional power is required). Therefore, when the first output terminal A has a backup requirement, the output control circuit 3 connects the first output terminal A and the auxiliary power supply circuit 2. In this way, the first auxiliary power Pa1 provided by the auxiliary power supply circuit 2 can be provided to the first output terminal A through the output control circuit 3 to meet the backup requirement of the first output terminal A. It is worth mentioning that in one embodiment, Figure 2B The extended maintenance time mode or peak power mode that can be implemented is similar to the above-mentioned points 2 and 3, and will not be described in detail here. Figure 2B The circuit structure can be applied to any occasion where the first output terminal A described above or below in the present disclosure has a backup requirement, and will not be described in detail here.

[0104] See also Figure 3A FIG. 1 is a circuit block diagram of the first embodiment of the output control circuit disclosed in the present invention, and is also referred to in conjunction with FIG. Figure 2A-2B .exist Figure 3A, the output control circuit 3 includes a switch circuit 32, and the switch circuit 32 is respectively coupled to the first output terminal A, the second output terminal B and the third output terminal C. The switch circuit 32 includes a switch 322 and a unidirectional conduction element D, and the control end of the switch 322 is coupled to the control module 4. The switch 322 can be, for example but not limited to, a semiconductor element such as a transistor, and the control module 4 can selectively turn on / off the switch 322 according to the above-mentioned control requirements of the power supply 100 to connect or disconnect the first output terminal A and the second output terminal B. One end of the switch 322 is coupled to the first output terminal A, and the other end of the switch is coupled to the second output terminal B and one end of the unidirectional conduction element D. The other end of the unidirectional conducting element D is coupled to the auxiliary power supply circuit through the third output terminal C, and the unidirectional conducting element D can be, for example but not limited to, a diode, a thyristor, etc., which is forward-biased from one direction to another (i.e., the direction from the third output terminal C to the second output terminal B is forward-biased), and the reverse direction is reverse-biased. Alternatively, the unidirectional conducting element D can also be a switch, so as to be controlled to conduct when necessary to connect the second output terminal B and the third output terminal C.

[0105] Further, when the control module 4 controls the switch 322 to be turned on, the first output power Po1 can be provided to the second output terminal B as the second auxiliary power Pa2, or the first auxiliary power Pa1 can be provided to the first output terminal A as the second output power Po2 (according to Figure 2A The above-described operation mode is determined). On the contrary, when the control module 4 controls the switch 322 to be turned off, the first output power supply Po1 and the first auxiliary power supply Pa1 are provided to the critical load Load_C, and the first auxiliary power supply Pa1 is provided to the non-critical load Load_NC to respectively power the critical load Load_C and the non-critical load Load_NC. Among them, when the control module 4 controls the switch 322 to be turned on, the first auxiliary power supply Pa1 can be provided to the second output terminal B through the unidirectional conduction element D, but the second auxiliary power supply Pa2 cannot be reversely fed back to the auxiliary power supply circuit 2 through the unidirectional conduction element D. In this way, the auxiliary power supply circuit 2 can be prevented from accidentally receiving an inappropriate voltage, and the reverse feeding of the second auxiliary power supply Pa2 can be prevented through the anti-reverse feeding protection function to prevent the auxiliary power supply circuit 2 from failing.

[0106] It is worth mentioning that in one embodiment, the switch 322 can be a controlled switch or a self-driven switch. Specifically, on the other hand, when the switch 322 is a controlled switch, the switch 322 can be turned on by itself to connect the first output terminal A and the second output terminal B by, for example but not limited to, actively detecting the state, voltage / current of the conversion circuit 1, or by controlled conduction by external control (for example but not limited to the system controller, the controller of the conversion circuit 1, etc.). When the switch 322 is a self-driven switch, the switch 322 can be turned on by itself through the voltage / current changes of each end to connect the first output terminal A and the second output terminal B. Therefore, as long as the circuit elements, circuits, controllers, etc. that can achieve the on / off technical effect, they should be included in the scope of this embodiment.

[0107] On the other hand, the output control circuit 3 also includes a protection switch 40 (i.e., the general auxiliary power supply circuit 2 will include an isolation switch directly coupled to its output terminal, but the present disclosure is not so coupled). The protection switch 40 is coupled to the second output terminal B, and is mainly used to determine whether the power supply (i.e., the first auxiliary power supply Pa1 and / or the second auxiliary power supply Pa2) can be provided to the non-critical load Load_NC by controlling its on / off. When the power supply (i.e., the first auxiliary power supply Pa1 and / or the second auxiliary power supply Pa2) is not within the predetermined range, the protection switch 40 is turned off and its path is disconnected to avoid the non-compliant first auxiliary power supply Pa1 and / or the second auxiliary power supply Pa2 being provided to the non-critical load Load_NC and causing damage to the non-critical load Load_NC. On the contrary, the output protection switch 40 is turned on and its path is short-circuited to provide the compliant first auxiliary power supply Pa1 and / or the second auxiliary power supply Pa2 to the non-critical load Load_NC and supply power to the non-critical load Load_NC.

[0108] See also Figure 3B is a circuit block diagram of the first embodiment of the switch circuit disclosed in the present invention, and is also referred to in conjunction with Figures 2A to 3A .exist Figure 3B In the embodiment, the switch circuit 32 uses the undervoltage lockout value UVLO1 of the conversion circuit 1 as the operation logic. The switch circuit 32 includes a switch 322 and a control circuit 324, and the switch 322 can be a PMOS transistor. The control circuit 324 couples the control end of the switch 322 and the output end of the conversion circuit 1, and when the output voltage Vo of the output end of the conversion circuit 1 is higher than the undervoltage lockout value UVLO1, it represents that the conversion circuit 1 is operating normally. Therefore, the control circuit 324 determines that the output voltage Vo of the conversion circuit 1 is higher than the undervoltage lockout value UVLO1, and controls the switch 322 to be turned on after inverting its signal through the reverse gate NOT. On the contrary, when the control circuit 324 determines that the output voltage Vo is lower than the undervoltage lockout value UVLO1, its signal is reversed through the reverse gate NOT, so that the control circuit 324 controls the switch 322 to be turned off.

[0109] See also Figure 3C is a circuit block diagram of a second embodiment of the switch circuit disclosed in the present invention, and is also referred to in conjunction with Figures 2A to 3B .exist Figure 3C In the embodiment, in addition to using the under-voltage lockout value UVLO1 of the conversion circuit 1 as the operation logic, the switch circuit 32 also uses the under-voltage lockout value UVLO2 of the auxiliary power supply circuit 2 to assist in the operation, so as to control the switch 322 more stably and accurately. When the output voltage Vo at the output end of the conversion circuit 1 is higher than the under-voltage lockout value UVLO1, it represents that the conversion circuit 1 is operating normally, and when the auxiliary voltage Va at the output end of the auxiliary power supply circuit 2 is higher than the under-voltage lockout value UVLO2, it represents that the auxiliary power supply circuit 2 is operating normally. Therefore, both provide a logic 1 signal, and this logic signal is inverted through the anti-AND gate NAND, so that the control circuit 324 controls the switch 322 to turn on. Conversely, when the control circuit 324 determines that the output voltage Vo or the auxiliary voltage Va is lower than the under-voltage lockout value UVLO1, UVLO2, its signal is inverted through the anti-AND gate NAND, so that the control circuit 324 controls the switch 322 to turn off. It is worth mentioning that in one embodiment, Figures 3B to 3C The circuit blocks, structures and coupling relationships of the switch circuit 32 are only preferred embodiments among many embodiments. In fact, the circuit blocks, structures and coupling relationships of the switch circuit 32 can be changed according to the detailed operation mode of the switch circuit 32. Therefore, as long as the switch circuit 32 can be controlled to be turned on / off according to the above operation logic to enable the power supply 100 to provide the above technical effects, it should be included in the scope of this embodiment.

[0110] See also Figure 4A is a circuit block diagram of a second embodiment of the output control circuit disclosed in the present invention, and is also referred to in conjunction with Figures 2A to 3B . Figure 4A and Figure 3A The difference is, Figure 4AThe output control circuit 3 also includes a DC conversion circuit 34. One end of the DC conversion circuit 34 is coupled to the output end of the conversion circuit 1 and the first output end A, and the other end of the DC conversion circuit 34 is coupled to the switch circuit 32. The DC conversion circuit 34 is mainly used to convert the first output power Po1 into the second auxiliary power Pa2, so that the conversion circuit 1 can supply power to the non-critical load Load_NC. Further, since the output voltage Vo of the first output power Po1 may be higher or lower than the auxiliary voltage Va of the first auxiliary power Pa1 (for a general power supply 100, the output voltage Vo is usually higher than the auxiliary voltage Va), if the first output power Po1 is directly used as the second auxiliary power Pa2, the voltage level of its output voltage Vo cannot meet the requirements of the non-critical load Load_NC. Therefore, when the conversion circuit 1 supplies power to the non-critical load Load_NC, and the output voltage Vo does not match the auxiliary voltage Va, the DC conversion circuit 34 can convert the output voltage Vo into the auxiliary voltage Va to provide the second auxiliary power Pa2 whose voltage level meets the requirements of the non-critical load Load_NC.

[0111] On the other hand, the DC conversion circuit 34 can be a bidirectional DC converter, so that the power supply 100 has the ability to assist the power circuit 2 to supply power to the critical load Load_C. Specifically, when the DC conversion circuit 34 is a bidirectional DC converter, the DC conversion circuit 34 can be used to convert the first auxiliary power Pa1 into the second output power Po2, so that the auxiliary power circuit 2 can supply power to the critical load Load_C. Figure 2A Taking the specific operation mode of the power supply 100 as an example, when the first output power Po1 is not within the predetermined range or the first output power Po1 cannot meet the power demand of the critical load Load_C, the switch circuit 32 connects the DC conversion circuit 34 and the second output terminal B, and the DC conversion circuit 34 converts the first auxiliary power Pa1 into the second output power Po2 to provide the second output power Po2 to the first output terminal A. When the auxiliary power circuit 2 supplies power to the critical load Load_C, and the output voltage Vo does not match the auxiliary voltage Va, the DC conversion circuit 34 can convert the auxiliary voltage Va into the output voltage Vo to provide the second output power Po2 whose voltage level meets the demand of the critical load Load_C. In order to boost / step down the output voltage Vo and the auxiliary voltage Va, the DC conversion circuit 34 can be a boost converter, a buck converter or a buck-boost converter, which is mainly determined according to the demand of the power supply.

[0112] See also Figure 4B FIG. 1 is a circuit block diagram of a third embodiment of the output control circuit disclosed in the present invention, and is also referred to in conjunction with FIG. Figures 2A to 4A . Figure 4B and Figure 4A The difference is, Figure 4B The output control circuit 3 also includes a bypass switch 36, and the bypass switch 36 is connected in parallel to the DC conversion circuit 34 to provide a power saving operation when the output voltage Vo matches the auxiliary voltage Va. Specifically, when the output voltage Vo provided by the conversion circuit 1 does not match the auxiliary voltage Va provided by the auxiliary power circuit 2, and the conversion circuit 1 intends to provide the first output power Po1 to the second output terminal B, the bypass switch 36 is turned off, so that the DC conversion circuit 34 converts the first output power Po1 to the second auxiliary power Pa2. In addition, when the DC conversion circuit 34 is a bidirectional DC converter, when the output voltage Vo does not match the auxiliary voltage Va, and the auxiliary power circuit 2 intends to provide the first auxiliary power Pa1 to the first output terminal A, the bypass switch 36 is turned off, so that the DC conversion circuit 34 converts the first auxiliary power Pa1 to the second output power Po2.

[0113] On the contrary, when the output voltage Vo is equal to the auxiliary voltage Va, the bypass switch 36 is turned on, and the first output power Po1 is provided to the second output terminal B as the second auxiliary power Pa2 through the bypass switch 36. Moreover, when the auxiliary power circuit 2 intends to provide the first auxiliary power Pa1 to the first output terminal A, the first auxiliary power Pa1 can also be provided to the first output terminal A as the second output power Po2 through the bypass switch 36. In this way, the power loss of the DC conversion circuit 34 can be saved, thereby improving the efficiency of the power supply 100. On the other hand, when the DC conversion circuit 34 is not running, the power supply 100 can selectively control the DC conversion circuit 34 to standby or sleep, or even disable the DC conversion circuit 34 to stop it completely.

[0114] See also Figure 4C FIG. 1 is a circuit block diagram of a fourth embodiment of the output control circuit disclosed in the present invention, and is also referred to in conjunction with FIG. Figures 2A to 4B . Figure 4C and Figure 4A The difference is, Figure 4C The coupling relationship between the DC conversion circuit 34 and the switch circuit 32 is similar to Figure 4A There are slight differences. Specifically, Figure 4C In the embodiment, the switch circuit 32 and the DC conversion circuit 34 are connected in parallel. That is, one end of the switch circuit 32 is coupled to one end of the DC conversion circuit 34 and the first output terminal A, and the other end of the switch circuit 32 is coupled to the other end of the DC conversion circuit 34 and the second output terminal B. In addition, the switch circuit 32 acts as Figure 4B Bypass switch 36. That is, Figure 4C The switch circuit 32 provides Figure 4A In addition to the operation of the bypass switch 36, the bypass switch 36 is selectively turned on in response to the difference between the output voltage Vo and the auxiliary voltage Va to replace the function of the bypass switch 36, thereby saving circuit cost.

[0115] See also Figure 4D FIG. 1 is a circuit block diagram of a fifth embodiment of the output control circuit disclosed in the present invention, and is also referred to in conjunction with FIG. Figures 2A to 4C . Figure 4D and Figure 4A The difference is that the switch circuit is integrated into the DC conversion circuit 34 and serves as a protection switch 38 of the DC conversion circuit 34. The function of the protection switch 38 is the same as the protection switch 40 of 3A, and it is mainly used as an isolation switch at the output end of the DC conversion circuit 34, and is mainly used to determine whether the second output power Po2 or the second auxiliary power Pa2 can flow through by controlling its conduction / off.

[0116] See also Figure 5 FIG. 1 is a circuit block diagram of a sixth embodiment of the output control circuit disclosed in the present invention, and is also referred to in conjunction with FIG. Figures 2A to 4D . Figure 5 and Figure 3A The difference is that the output control circuit 3 includes a three-terminal switch SW, and the three-terminal switch SW includes a first terminal, a second terminal and a third terminal. The first terminal is coupled to the first output terminal A, the second terminal is coupled to the second output terminal B, and the third terminal is coupled to the auxiliary power circuit 2 through the third output terminal C. The three-terminal switch SW is mainly similar to Figure 2A The operation method described above selectively conducts the coupling relationship between the first output terminal A and the second output terminal B, or conducts the coupling relationship between the third output terminal C and the second output terminal B, so as to provide power to the critical load Load_C and the non-critical load Load_NC accordingly. It is worth mentioning that in one embodiment, the three-terminal switch SW can be replaced by two complementary on / off transistors, but it is not limited to this. Any switch with the same technical effect should be included in the scope of this embodiment.

[0117] See also Fig. 6A This is a load dispatching curve diagram of the first embodiment of the hybrid power supply mode disclosed in the present invention. Figure 6B This is a load allocation curve diagram of the second embodiment of the hybrid power supply mode disclosed in the present invention, and is also referred to in conjunction with Figures 2A to 5. Specifically, in addition to executing the above-mentioned operation method, the power supply 100 of the present invention can also provide a load allocation operation in a hybrid power supply mode. Under the hybrid power supply mode, the power supply 100 can achieve efficient current conversion by setting voltage parameters. Specifically, in Figure 6, the horizontal axis is the demand current In required by the non-critical load Load_NC, and the vertical axis is the output current (Im, Ia) of the conversion circuit 1 and the auxiliary power supply circuit 2 respectively. In the hybrid power supply mode, the control module 4 can provide a control signal to communicate with the conversion circuit 1 and the auxiliary power supply circuit 2 according to the demand current In of the non-critical load Load_NC, so as to inform the conversion circuit 1 and the auxiliary power supply circuit 2 to adjust the output current (Im, Ia) they need to provide. Therefore, after receiving the control signal of the control module 4, the controllers of the conversion circuit 1 and the auxiliary power supply circuit 2 adjust their own output currents (Im, Ia) accordingly to achieve the function of hybrid power supply to the non-critical load Load_NC. In this way, in the hybrid power supply mode, the non-critical load Load_NC can be powered by the conversion circuit 1 and the auxiliary power supply circuit 2 together.

[0118] Therefore, please refer to Fig. 6A When the required current In of the non-critical load Load_NC is below the half load of the auxiliary power circuit 2 (assuming that the half load is 1.5A), the required current In can be provided by the main conversion circuit 1 to achieve high efficiency. On the contrary, when the required current In of the non-critical load Load_NC is above the half load (taking 2.5A as an example), the conversion circuit 1 provides a first output current Im of 2A, and the auxiliary power circuit 2 provides a second output current Ia of 0.5A, and so on, which will not be repeated here. In addition, refer to Figure 6B The power supply 100 can adjust the curve slope of the output current (Im, Ia) according to actual needs, so as to adjust the efficiency of the power supply 100 according to the adjustment of the curve slope, thereby optimizing the overall efficiency of the power supply 100.

[0119] See also Figures 2A to 6B , which shows a variety of implementation and operation modes of the output control circuit 3, and each implementation mode can be selectively combined and applied, so that the characteristics and technical effects of each implementation mode can be combined with each other. For example, but not limited to, the operation mode of extending the holding time can be combined with the operation mode of peak power, so that the power supply 100 can simultaneously have the characteristics and technical effects of increasing the holding time and providing peak power. For example, the following Table 2 is a schematic application Figure 4BThe architecture is presented, and the operation modes of each implementation of the output control circuit 3 are integrated. Among them, Vo is the output voltage Vo of the conversion circuit 1 (preset), and Va is the auxiliary voltage Va of the auxiliary power supply circuit 2 (preset). When Vo = Va, the bypass switch 36 can be turned on, enabling the first output power supply Po1 or the first auxiliary power supply Pa1 to be provided to the other party through the path of the switch circuit 32 and the bypass switch 36. For example, but not limited to, when the power supply 100 desires to operate in the high-efficiency output mode and Vo < Va, the DC conversion circuit 34 operates in the boost mode, and the output voltage Vo is provided to the DC conversion circuit 34 for conversion via the first output terminal A and is provided to the second output terminal B through the switch circuit 32. And so on, which will not be elaborated here.

[0120] Table 2: Figure 4B Under the circuit architecture of, the operation method of the output control circuit in each operation mode.

[0121]

[0122]

[0123] Please refer to Figure 7 which is a flowchart of the load allocation method of the power supply of the present disclosure, and in combination with reference to Figures 2A to 6B . The load allocation method of the present disclosure is mainly applicable to Figure 2A the power supply 100 shown, and the power supply 100 is used to supply power to the critical load Load_C through the first output terminal A. The power supply 100 is also used to supply power to the non-critical load Load_NC through the second output terminal B, and the load allocation method includes controlling the conversion circuit to convert the DC power supply into the first output power supply, and controlling the auxiliary power supply circuit to convert the DC power supply into the first auxiliary power supply (S100). Then, it is determined that the conversion circuit is operating normally and there is still margin for the first output power supply (S200). A preferred implementation is to detect the conversion circuit 1 through the control module 4 to determine whether the conversion circuit 1 is operating normally and whether there is still margin for the first output power supply Po1. And when the conversion circuit 1 is operating normally and there is still margin for the first output power supply Po1, the first output terminal and the second output terminal are connected to provide the second auxiliary power supply to the second output terminal by the conversion circuit (S220). When the first output terminal A and the second output terminal B are connected, the conversion circuit 1 can provide the second auxiliary power supply Pa2 to the second output terminal B through the path from the first output terminal A to the second output terminal B of the output control circuit 3. In this way, the non-critical load Load_NC can be powered by the second auxiliary power supply Pa2, and thus the load borne by the auxiliary power supply circuit 2 can be transferred to the high-efficiency conversion circuit 1 through the control of the output control circuit 3.

[0124] On the contrary, it is determined that the conversion circuit is operating normally and the first output power supply has no margin (S300). When the conversion circuit 1 operates normally and the first output power supply Po1 has no margin, the second output terminal and the auxiliary power supply circuit are connected so that the auxiliary power supply circuit provides the first auxiliary power supply to the second output terminal (S320). When the second output terminal B is connected to the output terminal of the auxiliary power supply circuit 2 (i.e., the third output terminal C), the auxiliary power supply circuit 2 provides the first auxiliary power supply Pa1 to the second output terminal B through the output control circuit 3, so that the non-critical load Load_NC can be powered by the first auxiliary power supply Pa1. Through the operation of the above-mentioned high-efficiency output mode of the power supply 100, the load borne by the auxiliary power supply circuit 2 is transferred to the high-efficiency conversion circuit 1 through the control of the output control circuit 3, so as to achieve the technical effect of reducing the loop loss of the power supply 100, improving the power density and improving the efficiency. It is worth mentioning that in one embodiment, the present disclosure Figure 7 The detailed process of the operation method of the power supply 100 not described herein can be referred to in conjunction with Figures 2A to 6B , I will not elaborate on it here.

[0125] [Technical solution 2, electromagnetic interference suppression method]

[0126] like Figure 8 As shown, the power supply device PSU_S usually includes a plurality of power supplies 100 connected in parallel, thus causing electromagnetic interference (EMI) or harmonic distortion problems of the plurality of power supplies 100 and their standby power supplies. Specifically, since the power supply device PSU_S includes a plurality of power supplies 100 connected in parallel, the overall noise harmonics will be superimposed, causing troubles to the entire system of the power supply device PSU_S and its applications. The reason is that, assuming that the operating frequency of a single power supply 100 is 100kHz, because the plurality of power supplies 100 of the power supply device PSU_S all operate at the same frequency, the sum of their noise will be superimposed at the same frequency point (i.e., superimposed at 100kHz). In practice, based on the operation mode of the power supply device PSU_S on each power supply 100, the reasons for the superposition of the sum of the noise also include the range, size, and controller parameters of the frequency jitter, resulting in a systematic deficiency of the power supply device PSU_S.

[0127] Therefore, the present disclosure further transmits the information of the relative position (which may be a physical position or a virtual address) of each power supply 100 in the power supply device PSU_S to the system controller MCU of the power supply device PSU_S or the control module 4 of each power supply 100. Figure 8For example, it is assumed that the frame of the power supply device PSU_S is a physical cabinet 5, and includes a plurality of accommodating spaces 5-1 to 5-6 (for example, but not limited to, machine slots) for each power supply 100 to be inserted. In addition, the system controller MCU of the power supply device PSU_S can determine whether the accommodating spaces 5-1 to 5-6 have power supplies 100 installed by detection means (for example, but not limited to, judging by whether the signal is a specific value, or whether a signal is actively provided to the system controller MCU, etc.), and sort the power supplies 100 in sequence (i.e., arrange them in a specific order) according to the actual position of each power supply 100 in a specific direction (for example, but not limited to, from top to bottom) from the accommodating spaces 5-1 to 5-6. For example, if there is an empty position in the accommodating spaces 5-1 to 5-6, the position can be skipped and the sorting can continue, but it is not limited to this. Alternatively, the system controller MCU can also, for example, but not limited to, at one of the power supplies 100 When a power supply 100 is inserted into one of the accommodating spaces 5-1 to 5-6, a virtual address is set for the inserted power supply 100, and the power supply 100 is sorted in sequence (i.e., arranged in a specific order) according to the insertion order. That is, the system controller MCU can set a plurality of virtual addresses according to the insertion order of the power supply 100, and the system controller MCU arranges the power supply 100 in a specific order according to the order of the virtual addresses. The system controller MCU can communicate with the control modules 4 of each power supply 100 by coupling them, and can control each power supply 100 by providing a control command CL to the control module 4. In this way, the control module 4 can perform corresponding control according to the instructions of the system controller MCU.

[0128] After the specific order is completed, the system controller MCU can communicate with the control modules 4 of each power supply 100 to stagger the operating frequencies of each power supply 100. In this way, the system-level noise accumulation can be reduced. Specifically, Figures 9A to 9C As shown, the power supply device PSU_S can fine-tune the operating frequencies of the power supplies 100 to be inconsistent. Fig.9AIn the embodiment, the system controller MCU arranges the specific order of the power supplies 100-1 to 100-6 according to the actual positions from top to bottom of the accommodation spaces 5-1 to 5-6, and sets different operating frequencies of the power supplies 100-1 to 100-6 according to the specific order (for example, but not limited to, operating frequencies with different sequence levels such as 100kHz, 101kHz, 102kHz, and so on). In this way, the operating frequencies of the power supplies 100-1 to 100-6 can be staggered to avoid that multiple power supplies 100 all work at the same frequency, which causes the total noise to be superimposed at the same frequency point, thereby reducing the system-level noise accumulation and suppressing electromagnetic interference. It is worth mentioning that in one embodiment, the above example of increasing the sequence level is used as an illustration. However, the sequence level can also be implemented in a sequentially decreasing manner (for example, but not limited to, operating frequencies with different sequence levels such as 100kHz, 99kHz, 98kHz, and so on).

[0129] exist Fig. 9B In the embodiment, the system controller MCU arranges the power supplies 100-1 to 100-6 in a specific order according to the virtual addresses set by each power supply 100, and sets the power supplies 100-1 to 100-6 to frequency jitter operation according to the specific order, and sets the frequency jitter range of their operating frequencies to be different (for example, but not limited to, 100±2kHz, 100±4kHz, 100±6kHz, etc., which increase in sequence, and other implementation methods that increase in sequence or decrease in sequence that are not shown can be deduced by analogy, and will not be repeated here). In this way, the same as Fig.9A The power supply device PSU_S has similar technical effects. Fig. 9C In the embodiment, the system controller MCU arranges the specific order of the power supplies 100-1 to 100-6 according to the actual positions of the accommodation spaces 5-1 to 5-6 from top to bottom, and integrates Fig.9A and Fig. 9B Frequency adjustment method. Specifically, the system controller MCU sets the different operating frequencies of the power supplies 100-1 to 100-6 in a specific order (i.e., different sequence levels), and further sets the frequency jitter range of the power supplies 100-1 to 100-6 on this basis (for example, but not limited to, 101±2kHz, 102±4kHz, 104±6kHz, etc., which increase in sequence, and other implementation methods that are not shown in sequence can be deduced and will not be repeated here). In this way, the range of its frequency variation can be larger, and its total noise is not easy to be superimposed at the same frequency point, thereby further reducing the system-level noise accumulation and providing a better technical effect of suppressing electromagnetic interference.

[0130] In addition, see Figures 2A to 9CEach of the power supply devices 100-1 to 100-6 in the power supply device PSU_S of the present disclosure may include: Figure 2A The circuit architecture shown. That is, each power supply 100-1 to 100-6 includes a conversion circuit 1, an auxiliary power circuit 2, an output control circuit 3 and a control module 4. In addition, the first output terminal A of each power supply 100-1 to 100-6 is connected in parallel to couple the critical load Load_C, and the second output terminal B of each power supply 100-1 to 100-6 is connected in parallel to couple the non-critical load Load_NC. Therefore, Figures 2A to 6B The high efficiency output mode, extended maintenance time mode and peak power mode can be based on Figures 8 to 9C The power supply device PSU_S includes a plurality of power supplies 100 and has a special control strategy.

[0131] Furthermore, if Fig. 10A , 10B Shown Figure 2A The maximum efficiency of the conversion circuit and the auxiliary power supply circuit are 98% and 92% respectively. Fig. 10A , 10B In the embodiment, the conversion circuit 1 and the auxiliary power circuit 2 of the power supply 100 have different efficiencies when operating according to the different drawdown amounts of the key load Load_C (i.e., no load to full load is 0% to 100%), and generally have the best efficiency at a specific drawdown amount (for example, but not limited to when the drawdown amount is approximately 50%). Therefore, the system controller MCU can adjust the first output current Im provided by the conversion circuit 1 of each power supply 100 according to the power demand of the key load Load_C and the first best efficiency of the conversion circuit 1 of each power supply 100-1 to 100-6, so as to improve the operating efficiency of the power supply 100-1 to 100-6 as much as possible.

[0132] Among them, the best efficiency is basically dynamic (such as Fig. 10A , 10B As shown), the reason is that the load of the critical load Load_C and the non-critical load Load_NC is not a fixed value and is not determined by the power supply device PSU_S. Therefore, assuming that the first output current Im of the conversion circuit 1 is 6A, 9A, and 12A, the corresponding efficiency of the conversion circuit 1 is 97.5%, 98%, and 97.5% respectively (as shown in FIG. Fig. 10A As shown in FIG. 1 , and when the connection trend increases / decreases, the system controller MCU will operate each conversion circuit 1 of the power supply device PSU_S to provide a first output current Im of 9A as much as possible, so that its optimal efficiency can reach 98%. Fig.9AFor example, the six power supplies 100-1 to 100-6 are assumed to have a power demand of 59A for the key load Load_C. Therefore, after calculation and allocation by the system controller MCU, the system controller MCU can allocate 10A of current IA to be provided by the first output terminal A of the power supplies 100-1 to 100-5, and allocate 9A of current IA to be provided by the first output terminal A of the power supply 100-6. In this way, the efficiency of the power supplies 100-1 to 100-5 can reach 97.9%, and the efficiency of the power supply 100-6 can reach 98%, so that the power supplies 100-1 to 100-6 can maintain high-efficiency operation.

[0133] However, if the draw amount of the critical load Load_C and the non-critical load Load_NC is too high, even if the conversion circuit 1 operates to provide the first output current Im of 9A, it still cannot meet the needs of the critical load Load_C and the non-critical load Load_NC. At this time, the system controller MCU can operate the conversion circuit 1 in a state with higher efficiency as much as possible. Therefore, in addition to adjusting the first output current Im provided by the conversion circuit 1 of each power supply 100-1~100-6, the system controller MCU can also try to maintain the efficiency of each conversion circuit 1 at the best efficiency as much as possible by adjusting the amount of power supplied by the conversion circuit 1 to the critical load Load_C and the non-critical load Load_NC.

[0134] Specifically, the system controller MCU can selectively control the output control circuit of at least one of the power supplies 100-1 to 100-6 to disconnect the first output terminal A and the second output terminal B according to the power requirements of the critical load Load_C and the non-critical load Load_NC and the first optimal efficiency of the conversion circuit 1 of each power supply 100-1 to 100-6, so as to maintain the efficiency of each conversion circuit 1 at the optimal efficiency as much as possible. Fig.9ATaking the six groups of power supplies 100-1 to 100-6 as an example, it is assumed that the power requirements of the critical load Load_C and the non-critical load Load_NC are 46.5A and 7.5A respectively, and the total power requirement is 54A. Therefore, after calculation and allocation by the system controller MCU, the first output terminal A and the second output terminal B of the output control circuit 3 of the power supply 100-1 to 100-5 are both connected, and the 7.5A current IA is allocated to be provided by the first output terminal A, and the 1.5A current IB is allocated to be provided by the second output terminal B. In addition, the first output terminal A and the second output terminal B of the output control circuit 3 of the power supply 100-6 are disconnected, and the 9A current IA is allocated to be provided by the first output terminal A, and the second output terminal B of the power supply 100-6 does not provide the current IB. In this way, the conversion circuit 1 of each power supply 100-1 to 100-6 provides a first output current Im of 9A, so that the conversion circuit 1 can achieve an optimal efficiency of 98% (see also Fig. 10A ).

[0135] On the other hand, the system controller MCU can selectively control the output control circuit 3 of the power supply 100-1 to 100-6 to connect the first output terminal A and the second output terminal B in response to certain specific total power requirements, and distribute the specific current IB to be provided by the second output terminal B, and control the first output terminal A of at least one power supply 100-1 to 100-6 not to provide the current IA to maintain the best efficiency. Fig.9A For example, the six power supplies 100-1 to 100-6 are assumed to have power requirements of 45A and 9A for the critical load Load_C and the non-critical load Load_NC, respectively, and the total power requirement is 54A. Therefore, after calculation and allocation by the system controller MCU, the 9A current IA is allocated to be provided by the first output terminal A of the power supplies 100-1 to 100-5, and the 9A current IB is allocated to be provided by the second output terminal B of the power supply 100-6. In this way, the second output terminal B of the power supplies 100-1 to 100-5 does not provide the current IB, and the first output terminal A of the power supply 100-6 does not provide the current IA.

[0136] In addition to the above examples, the system controller MCU can adjust at least one of the power supplies 100-1 to 100-6 to standby, sleep or shutdown according to the power requirements of the critical load Load_C and the non-critical load Load_NC and the first optimal efficiency of the conversion circuit 1 of each power supply 100-1 to 100-6. Fig.9ATaking the six groups of power supplies 100-1 to 100-6 as an example, it is assumed that the power requirements of the critical load Load_C and the non-critical load Load_NC are 37.5A and 7.5A respectively, and the total power requirement is 45A. Therefore, after calculation and allocation by the system controller MCU, the first output terminal A and the second output terminal B of the output control circuit 3 of the power supply 100-1 to 100-5 are both connected, and the 7.5A current IA is allocated to be provided by the first output terminal A, and the 1.5A current IB is allocated to be provided by the second output terminal B. In addition, since the power supply 100-1 to 100-5 has fully borne the total power requirement of 45A, the system controller MCU can adjust the power supply 100-6 to standby, sleep or shut down to save the power consumption of the power supply 100-6 and maintain the efficient operation of the power supply 100-1 to 100-5.

[0137] Related References Fig. 10B , since the efficiency of the auxiliary power circuit 2 is relatively poor, the system controller MCU is mainly forced to control the auxiliary power circuit 2 to operate when the first output power Po1 does not have a margin. Specifically, when the conversion circuit 1 of the power supply 100-1 to 100-6 operates normally and the first output power Po1 does not have a margin (usually occurs when the critical load Load_C is fully loaded), the system controller MCU can control the auxiliary power circuit 2 of each power supply 100-1 to 100-6 according to the power demand of the non-critical load Load_NC and the second optimal efficiency (see Fig. 10B ) selectively connects the second output terminal B of each power supply 100-1~100-6 and the auxiliary power circuit 2, and adjusts the second output current Ia provided by the auxiliary power circuit 2 of each power supply 100-1~100-6.

[0138] Then Fig.9ATake the six groups of power supplies 100-1 to 100-6 as an example, assuming that the power demand of the critical load Load_C is 99A, and the power demand of the non-critical load Load_NC is 5A. After calculation by the system controller MCU, the first output current Im of each power supply 100-1 to 100-6 has reached full load output, so that the first output power Po1 has no margin. Therefore, the 5A current required by the non-critical load Load_NC must be borne entirely by the auxiliary power circuit 2 of the power supply 100-1 to 100-6. Therefore, after calculation and allocation by the system controller MCU, the second output terminal B of the output control circuit 3 of the power supply 100-1 to 100-4 and the auxiliary power circuit 2 are connected, and the auxiliary power circuit 2 of the power supply 100-1 to 100-4 is allocated to each provide a current of 1.25A, so that the 1.25A current IB is allocated to be provided by the second output terminal B of the power supply 100-1 to 100-4. In this way, the efficiency of the auxiliary power circuit 2 of the power supply 100-1 to 100-4 can reach the optimal efficiency of 92%. Since the power supply 100-1 to 100-4 has completely borne the power demand of the non-critical load Load_NC (i.e., 5A), the system controller MCU can disconnect the second output terminal B of the power supply 100-5 to 100-6 and the auxiliary power circuit 2, and adjust the power supply 100-5 to 100-6 to standby, sleep or shut down, so as to save the power consumption of the power supply 100-5 to 100-6 and maintain the efficient operation of the power supply 100-1 to 100-4.

[0139] Therefore, in the high-efficiency output mode (i.e., each power supply 100-1 to 100-6 operates normally and can normally provide the first output power Po1), the system controller MCU can control the conversion circuit 1 of the power supply 100-1 to 100-6 to supply power to the critical load Load_C, and control the output control circuit 3 of the power supply 100-1 to 100-6 to selectively connect or disconnect the first output terminal A and the second output terminal B according to the best efficiency, so that the conversion circuit 1 of the power supply 100-1 to 100-6 selectively supplies power to the non-critical load Load_NC. It is worth mentioning that in one embodiment, for the high-efficiency output mode of the power supply, the system controller MCU has many ways of allocating power according to the power requirements of the critical load Load_C and the non-critical load Load_NC, so those skilled in the art can infer it through the above records and illustrative examples, and will not be repeated here.

[0140] Similarly, the extended maintenance time mode and peak power mode of the present disclosure have similar operation modes as the above-mentioned high-efficiency output mode. Specifically, in the extended maintenance time mode (i.e., when the first output power Po1 of each power supply 100-1 to 100-6 is not within the predetermined range), the system controller MCU can be based on the second best efficiency (such as Fig. 10B The output control circuit 3 of at least one of the power supplies 100-1 to 100-6 controls the auxiliary power circuit 2 of the power supply 100-1 to 100-6 to connect the auxiliary power circuit 2 of the power supply 100-1 to the second output terminal B, so that the auxiliary power circuit 2 of at least one of the power supplies provides the second output current Ia to the second output terminal B. Fig.9A Assuming that the power supply device PSU_S has just been started and the conversion circuit 1 has not yet completed the startup and the conversion circuit 1 cannot supply power, so that the first output power Po1 of each power supply 100-1 to 100-6 is not within the predetermined range, the power demand of the non-critical load Load_NC is 5A as an illustrative example.

[0141] Under this condition, after calculation and allocation, the system controller MCU connects the second output terminal B of the output control circuit 3 of the power supply 100-1 to 100-4 and the auxiliary power circuit 2, and allocates the auxiliary power circuit 2 of the power supply 100-1 to 100-4 to each provide a current of 1.25A, so that the current IB of 1.25A is allocated to be provided by the second output terminal B of the power supply 100-1 to 100-4. In this way, the efficiency of the auxiliary power circuit 2 of the power supply 100-1 to 100-4 can reach the optimal efficiency of 92%. In addition, the system controller MCU can disconnect the second output terminal B and the auxiliary power circuit 2 of the power supply 100-5 to 100-6, and adjust the power supply 100-5 to 100-6 to standby, sleep or shut down, so as to save the power consumption of the power supply 100-5 to 100-6 and maintain the efficient operation of the power supply 100-1 to 100-4.

[0142] On the other hand, when at least one of the power supplies 100-1 to 100-6 is out of the predetermined range after the first output power Po1 is not in the predetermined range after normal operation, it means that the conversion circuit 1 enters the overvoltage, overcurrent, low voltage protection, or the conversion circuit 1 fails and enters the sleep, standby or shutdown state. Therefore, the system controller MCU can connect the first output terminal A and the second output terminal B of the output control circuit 3 of at least one of them (assuming it is the power supply 100-5), so that the auxiliary power circuit 2 of the power supply 100-5 provides the second output current Ia to the first output terminal A through the output control circuit 3 of the power supply 100-5 to extend the maintenance time of the power supply 100-5. In addition, since the output terminals of the power supplies 100-1 to 100-6 are coupled in parallel and have a bus bar formed by a common path, if the maintenance time of the power supply 100-5 is to be extended, the output control circuit 3 of the power supply 100-5 can also disconnect the first output terminal A and the second output terminal B, and the conversion circuit 1 of the power supplies 100-1 to 100-4 and 100-6 other than the power supply 100-5 provides the first current Im to the first output terminal A of the power supply 100-5. Through the above-mentioned method, the output capacitor (not shown) of the conversion circuit 1 of the power supply 100-5 can be temporarily supplemented with additional power, and the maintenance time of the conversion circuit 1 of the power supply 100-5 can be extended accordingly.

[0143] Specifically, in the peak power mode (i.e., when the first output power Po1 of the power supply 100-1 to 100-6 cannot meet the power demand of the critical load Load_C), the system controller MCU can control the auxiliary power circuit 2 of the power supply 100-1 to 100-6 to supply power to the non-critical load Load_NC, and according to the second best efficiency (such as Fig. 10B As shown in FIG. 1 , the output control circuit 3 of the power supply 100 - 1 to 100 - 6 selectively connects the first output terminal A and the second output terminal B, so that the auxiliary power circuit 2 of the power supply 100 - 1 to 100 - 6 selectively provides the second output current Ia to the first output terminal A.

[0144] by Fig.9ATake the six groups of power supplies 100-1 to 100-6 as an example, assuming that the power demand of the critical load Load_C is 104A and has a peak power demand (full load is 99A), and the power demand of the non-critical load Load_NC is 6A. After calculation by the system controller MCU, the first output current Im of each power supply 100-1 to 100-6 has reached the full load output and is less than the power demand of 5A. In addition, the power demand of the non-critical load Load_NC is 6A. Therefore, the system controller MCU controls the auxiliary power circuit 2 of each power supply 100-1 to 100-6 to provide a second output current Ia of 1A to power the non-critical load Load_NC. In addition, the power demand of the critical load Load_C that is less than 5A is also supplemented by the auxiliary power circuit 2 of each power supply 100-1 to 100-6 providing an additional second output current Ia.

[0145] Therefore, the system controller MCU can control the output control circuit 3 of the power supply 100-1 to 100-5 to connect the first output terminal A and the second output terminal B, so that the auxiliary power circuit 2 of the power supply 100-1 to 100-5 provides 1A second output current Ia to the first output terminal A. In addition, the system controller MCU can control the output control circuit 3 of the power supply 100-6 to disconnect the first output terminal A and the second output terminal B, so that there is no need to provide the 1A second output current Ia to the first output terminal A. Therefore, the first output terminal A of the power supply 100-1 to 100-5 is allocated to provide a current IA of 17.5A (where 16.5A is the first output current Im and 1A is the second output current Ia), and the second output terminal B is allocated to provide a current IB of 1A (where 1A is the second output current Ia). Furthermore, the first output terminal A of the power supply 100 - 6 is allocated to provide a current IA of 16.5A (where 16.5A is the first output current Im), and the second output terminal B is allocated to provide a current IB of 1A (where 1A is the second output current Ia).

[0146] In summary, the present disclosure can collaboratively control the control circuit 3 through the system controller MCU, and match the bus of the output end of the power supply 100-1~100-6, so that multiple power supplies 100-1~100-6 can collaborate to jointly respond to the system maintenance time and / or peak power requirements.

[0147] In addition, the power supply 100 disclosed above can also use the energy margin provided by one or more auxiliary power supply circuits 2 to selectively control one or more output control circuits 3 through the system controller MCU for collaborative control, so as to also meet the ITIC (Information Technology Industry Council) AC input voltage waveform (AC input voltage envelope) specification under the control of the maintenance time.

[0148] See also Fig.11 is a flowchart of the operating method of the power supply device disclosed in the present invention, and is also referred to in conjunction with Figures 9A to 9C . The power supply device PSU_S disclosed in the present invention is mainly to avoid the superposition of overall noise harmonics caused by multiple parallel power supplies 100-1 to 100-6 operating at the same operating frequency, thereby reducing the system-level noise accumulation and suppressing electromagnetic interference. Specifically, the operating method of the power supply device disclosed in the present invention includes, the power supply converts the input power according to the operating frequency to supply power to the critical load and the non-critical load (S400). The control module 4 of the power supply 100-1 to 100-6 can control the power factor correction circuit PFC to convert the AC input power Pin into the DC power Pdc according to the operating frequency (for example but not limited to 100kHz), and control the conversion circuit 1 and the auxiliary power circuit 2 to convert the DC power Pdc into the first output power Po1 and the first auxiliary power Pa1 respectively.

[0149] Then, a specific order is set by communicating with each power supply 100 (S420). The information of the relative position (which can be a physical position or a virtual address) of each power supply 100 is transmitted to the system controller MCU of the power supply device PSU_S or the control module 4 of each power supply 100. Finally, the power supplies are notified to adjust the operating frequency according to the specific order so as to adjust the operating frequency of each power supply to be inconsistent according to the specific order (S440). After the specific order is completed, the system controller MCU can communicate with the control module 4 of each power supply 100 by means of communication to stagger the operating frequency of each power supply 100. In this way, the noise accumulation at the system level can be reduced. Specifically, if Figures 9A to 9C As shown, the power supply device PSU_S can fine-tune the operating frequency of each power supply 100 to be inconsistent. It is worth mentioning that in one embodiment, Fig.11 For details of the operation process not described, please refer to Figures 9A to 10B And the corresponding description will not be repeated here.

[0150] [Technical solution three, miniaturized circuit board installation]

[0151] When the switch circuit 32 of the technical solution 1 is an active switch, it is usually implemented by a control chip. Since the packaging and pin functions of each control chip are different, the circuit main board needs to be rewired so that the output control circuit 3 can have the function of load allocation. In addition, when the switch circuit 32 of the technical solution 1 is a passive switch, although there is no problem with the active switch, the convenience of the power supply 100 during production still needs to be considered. That is, in some models, the power supply 100 may not have the function of the technical solution 1, and in some models, an active switch or a passive switch may be selected according to actual needs. Therefore, if it is different in response to the model, it is not possible to make the output control circuit 3 operate normally by simply replacing the control chip or circuit elements. It is often necessary to redesign the circuit of the entire power supply 100 in response to various different needs. In addition, due to the size and space limitations of the specific space where the power supply 100 is configured with the output control circuit 3, it is difficult to respond to various control chips and control circuits and wire their circuits to this specific space. Therefore, the existing solutions to the above problems are as follows:

[0152] 1. Place peripheral components such as a control chip from a specific manufacturer on the main circuit board of the power supply 100. However, this will result in the material source being limited to the control chip from a specific manufacturer, and once the specific control chip is out of stock, it will cause a material shortage problem.

[0153] 2. The control chip is configured on a small surface mount component circuit board (SMD PCB), and is plugged into the front side of the main circuit board of the power supply 100 (i.e., the side closer to the center point of the space inside the power supply housing). However, due to the space limitation of the high power density of the power supply 100, the space is mostly required to accommodate large electronic components such as electrolytic capacitors, power inductors, transformers, etc., so it is difficult to provide space for plugging.

[0154] See also Fig.12 The circuit structure diagram of the switch circuit of the present disclosure configured on the circuit board of the power supply is shown in FIG. Figures 2A to 11. The control chip IC of the present disclosure as the switch circuit 32, or the hardware required for different power supply applications based on the conversion circuit 1 and the auxiliary power supply circuit 2, can be formed into a modular structure by being soldered on a small surface mount component circuit board (SMD PCB, hereinafter referred to as the circuit board SMD PCB) on which the output control circuit 3 is configured. Specifically, the circuit board (SMD PCB) of the present disclosure is a modular structure in which different circuit configuration structures can be designed based on different types of control chip ICs from different companies, but the size of the circuit board (SMD PCB) is the same. That is, the circuit board (SMD PCB) forms a specific configuration depending on the brand of the control chip IC. Therefore, the control chip IC of the present disclosure can be of different brands, and different circuit configuration structures can be used to configure the circuit board (SMD PCB) of the same size, and the circuit board (SMD PCB) can be soldered to a specific area SA on the back side MB_B of the main circuit board MB of the power supply 100 through the printed circuit board mounting (PCB mount) technology.

[0155] The main circuit board MB of the power supply 100 is used to configure the conversion circuit 1 and the auxiliary power circuit 2, and the main circuit board MB is placed on one of the inner surfaces of the housing space of the housing. Therefore, the back side MB_B of the main circuit board MB is usually adjacent to the housing (not shown) of the power supply 100, and the back side MB_B of the main circuit board MB includes a specific area SA. The specific area SA includes a plurality of fixed contacts Pin, and the fixed contacts Pin at least include the following: Figure 2A The first output terminal A, the second output terminal B and the third output terminal C are shown. The circuit board (SMD PCB) is used to configure the output control circuit 3, and includes a plurality of pads (not shown) and a control chip IC. The control chip IC serves as a switch circuit 32 and is configured on the circuit board (SMD PCB). The pads are formed on the side of the circuit board (SMD PCB) that fits the specific area SA, and the pads are used to be correspondingly soldered to the fixed contacts Pin on the specific area SA, so that the pads at at least three fixed positions of the output control circuit 3 are electrically connected to the first output terminal A, the second output terminal B and the third output terminal C, so as to provide Figures 2A to 7 The function of the output control circuit 3.

[0156] Furthermore, since the circuit board (SMD PCB) is designed to be laid flat on the main circuit board MB by being soldered to the back MB_B of the main circuit board MB, and the control chip IC is usually not a large-volume circuit element, the circuit board (SMD PCB) is not equipped with large-volume circuit elements (such as but not limited to inductors, transformers, etc.), even if the specific space between the back MB_B of the main circuit board MB and the inner surface of the housing is small, the circuit board (SMD PCB) can still be configured in the small specific space between the two. Moreover, even if the control chip IC is designed by different manufacturers and its pins and functions are different, since they are all configured on the circuit board (SMD PCB) of the same size, the circuit design of the circuit board (SMD PCB) can make it different circuit configuration structures for control chip ICs of different manufacturers, but the functions of each pad of the circuit board (SMD PCB) are the same (i.e., the same connection / output / input function), and are formed at the position corresponding to the fixed contact Pin. In this way, the main circuit board MB can be attached and electrically connected through the printed circuit board mounting (PCB mount) technology.

[0157] Therefore, no matter what manufacturer's control chip IC, the circuit board (SMD PCB) can provide the ability to connect / disconnect the first output end and the second output end by soldering the pad to the corresponding fixed contact pin in the main circuit board MB. This allows the circuit board (SMD PCB) to be adaptively configured on the main board, making it compatible, thereby achieving the technical effect of improving the commonality of the main board and reducing the testing and wiring time.

[0158] However, the above description is only a detailed description and drawings of the preferred specific embodiments of the present disclosure, and the features of the present disclosure are not limited thereto and are not intended to limit the present disclosure. The entire scope of the present disclosure shall be based on the scope of the patent application. All concepts that fall within the scope of the patent application of the present disclosure and embodiments with similar changes shall be included in the scope of the present disclosure. Any changes or modifications that can be easily conceived by any person skilled in the art within the field of the present disclosure shall be covered by the patent scope of the present disclosure.

Claims

1. A power supply, comprising: A conversion circuit converts a DC power source into a first output power source, and is used to couple a critical load through a first output terminal, so as to provide the first output power source to power the critical load through the first output terminal; an auxiliary power supply circuit, converting the DC power supply into a first auxiliary power supply; an output control circuit coupled to the first output terminal and a second output terminal, wherein the second output terminal is used to couple to a non-critical load; Wherein, the output control circuit is used to selectively connect the first output end and the second output end, so that when the output control circuit disconnects the first output end and the second output end, the first output power supplies power to the critical load through the first output end, and when the output control circuit connects the first output end and the second output end, the first output power supplies power to the critical load and the non-critical load through the first output end and a second output end respectively.

2. The power supply as claimed in claim 1, wherein when the conversion circuit operates normally and the first output power still has margin, the output control circuit connects the first output end and the second output end, so that the conversion circuit provides a second auxiliary power to the second output end through the output control circuit; when the conversion circuit operates normally and the first output power does not have margin, the output control circuit connects the second output end and the auxiliary power circuit, so that the auxiliary power circuit provides the first auxiliary power to the second output end through the output control circuit.

3. The power supply as claimed in claim 1, wherein when the first output power is not within a predetermined range, the output control circuit connects the first output terminal and the second output terminal, so that the auxiliary power circuit provides a second output power to the first output terminal through the output control circuit to extend a maintenance time of the conversion circuit.

4. The power supply as claimed in claim 1, wherein when the first output power cannot meet a power demand of the critical load, the output control circuit connects the first output end and the second output end, so that the auxiliary power circuit provides a second output power to the first output end through the output control circuit.

5. The power supply as claimed in claim 1, wherein the output control circuit comprises: A DC conversion circuit is coupled to the first output terminal and converts the first output power into a second auxiliary power; a switch circuit coupled to the DC conversion circuit, the auxiliary power circuit and the second output terminal; When the conversion circuit operates normally and the first output power supply still has margin, the switch circuit connects the DC conversion circuit and the second output end, and the DC conversion circuit converts the first output power supply into the second auxiliary power supply; when the conversion circuit operates normally and the first output power supply does not have margin, the switch circuit connects the second output end and the auxiliary power supply circuit, so that the auxiliary power supply circuit provides the first auxiliary power supply to the second output end through the output control circuit.

6. The power supply as claimed in claim 5, wherein the output control circuit further comprises: a bypass switch connected in parallel with the DC conversion circuit; When an output voltage provided by the conversion circuit does not match an auxiliary voltage provided by the auxiliary power supply circuit, the bypass switch is turned off, and the DC conversion circuit converts the first output power supply into the second auxiliary power supply; when the output voltage is equal to the auxiliary voltage, the bypass switch is turned on, and the first output power supply is provided to the second output end through the bypass switch as the second auxiliary power supply.

7. A power supply as described in claim 6, wherein the DC conversion circuit is a bidirectional DC converter, and when the auxiliary voltage is higher or lower than the output voltage, the bypass switch is turned off, and the DC conversion circuit converts the first auxiliary power supply into a second output power supply; when the auxiliary voltage is equal to the output voltage, the bypass switch is turned on, and the first auxiliary power supply is provided to the first output terminal through the bypass switch as the second output power supply.

8. The power supply as claimed in claim 5, wherein the DC conversion circuit is a bidirectional DC converter, and when the first output power is not within a predetermined range or the first output power cannot meet a power demand of the critical load, the switch circuit connects the DC conversion circuit and the second output end, and the DC conversion circuit converts the first auxiliary power into a second output power to provide the second output power to the first output end.

9. The power supply as claimed in claim 5, wherein the switch circuit comprises: a switch, one end of which is coupled to the first output end, and the other end of which is coupled to the second output end; and a unidirectional conducting element, one end of which is coupled to the auxiliary power circuit, and the other end of which is coupled to the second output end; The direction of the unidirectional conducting element from the auxiliary power circuit to the second output end is forward biased. 10 . The power supply as claimed in claim 9 , wherein the switch is integrated into the DC conversion circuit and serves as an output protection switch of the DC conversion circuit.

11. The power supply as claimed in claim 10, wherein the switch circuit further comprises: a control circuit, coupling a control terminal of the switch and an output terminal of the conversion circuit; When the control circuit determines that an output voltage of the conversion circuit is higher than an undervoltage lockout value, the control circuit controls the switch to turn on, and when the control circuit determines that the output voltage is lower than the undervoltage lockout value, the control circuit controls the switch to turn off.

12. The power supply as claimed in claim 5, further comprising: A main circuit board is used to configure the conversion circuit and the auxiliary power circuit, and the main circuit board is placed on one of the inner surfaces of a housing, wherein a side of the main circuit board adjacent to the inner surface is a back surface, and the back surface includes: a specific area, including a plurality of fixed contacts, the plurality of fixed contacts including the first output terminal, the second output terminal and a third output terminal coupled to the auxiliary power circuit; and A circuit board, used to configure the output control circuit, and comprising: A plurality of solder pads are formed on a side of the circuit board that is in contact with the specific area, and the plurality of solder pads are used to be soldered to the plurality of fixed contacts accordingly; and A control chip, serving as the switch circuit, and disposed on the circuit board; The circuit board forms a specific configuration according to a different brand of the control chip, and the plurality of pads have the same function and form a position corresponding to the plurality of fixed contacts.

13. A power supply, comprising: A conversion circuit converts a DC power source into a first output power source, and is used to couple a critical load through a first output terminal, so as to provide the first output power source to power the critical load through the first output terminal; an auxiliary power circuit, converting the DC power into a first auxiliary power; and an output control circuit, coupled to the first output terminal and the auxiliary power circuit; When the first output end has a backup requirement, the output control circuit connects the first output end and the auxiliary power circuit, so that the first auxiliary power provided by the auxiliary power circuit is provided to the first output end through the output control circuit.

14. The power supply as claimed in claim 13, wherein the backup requirement is a maintenance time, and when the first output power is not within a predetermined range, the output control circuit connects the first output end and the auxiliary power circuit, so that the auxiliary power circuit provides a second output power to the first output end through the output control circuit to extend the maintenance time of the conversion circuit.

15. The power supply as claimed in claim 13, wherein the backup demand is a power demand, and when the first output power cannot meet the power demand of the critical load, the output control circuit connects the first output end and the auxiliary power circuit, so that the auxiliary power circuit provides a second output power to the first output end through the output control circuit.

16. A load allocation method for a power supply, the power supply being used to supply power to a critical load through a first output terminal and to supply power to a non-critical load through a second output terminal, the load allocation method comprising the following steps: Controlling a conversion circuit to convert a DC power supply into a first output power supply, and controlling an auxiliary power supply circuit to convert the DC power supply into a first auxiliary power supply; and (a1) determining that the conversion circuit operates normally and that the first output power supply has a margin; (a2) connecting the first output terminal and the second output terminal so that the conversion circuit provides a second auxiliary power supply to the second output terminal; and (b1) determining that the conversion circuit operates normally and the first output power has no margin; and (b2) connecting the second output terminal and the auxiliary power circuit so that the auxiliary power circuit provides the first auxiliary power to the second output terminal.

17. The load allocation method according to claim 16, further comprising the following steps: (c1) determining that the first output power is not within a predetermined range; (c2) connecting the first output terminal and the second output terminal so that the auxiliary power circuit provides a second output power to the first output terminal; (c3) determining that a maintenance time has been reached; and (c4) Disconnecting the first output terminal and the second output terminal.

18. The load allocation method according to claim 16, further comprising the following steps: (d1) determining that the first output power source cannot meet a power demand of the critical load; and (d2) connecting the first output terminal and the second output terminal so that the auxiliary power circuit provides a second output power to the first output terminal.

19. The load allocation method according to claim 16, further comprising the following steps: (e1) obtaining a judgment result; (e2) controlling a DC conversion circuit to convert the first output power into the second auxiliary power according to the determination result; or (e2) controlling the DC conversion circuit to convert the first auxiliary power supply into a second output power supply according to the determination result.

20. The load allocation method according to claim 16, further comprising the following steps: (f1) determining that an output voltage provided by the conversion circuit does not match an auxiliary voltage provided by the auxiliary power circuit; and (f12) controlling a DC conversion circuit to convert the first output power into the second auxiliary power, or controlling a DC conversion circuit to convert the first auxiliary power into a second output power; or (f2) determining that the output voltage is equal to the auxiliary voltage; and (f22) providing the first output power as the second auxiliary power to the second output terminal, or providing the first auxiliary power as the second output power to the first output terminal.

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