Power supply timing control apparatus and method
By using the target control module and analog switch in the power sequence control device, target power-on and power-off signals are generated, which solves the problem of inconsistent power-on and power-off sequence on the control board and ensures the safe and stable operation of the equipment.
Patent Information
- Application Number
- CN202310344187.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-03-31
- Publication Date
- 2026-01-20
- Estimated Expiration
- 2043-03-31
AI Technical Summary
On the control board of electronic devices, the lack of matching dedicated power management integrated circuit chips or chip failures make it impossible to achieve strict control over the power-on and power-off sequence of multiple power supplies, affecting the safe and stable operation of the equipment.
A power sequence control device is adopted, which generates target power-on and power-off signals according to preset conditions through a target control module and an analog switch, to ensure that the power supply is powered on and off in a predetermined sequence.
Strict control over power timing was achieved, ensuring the safe and stable operation of the control board and avoiding incorrect power-on/off sequence.
Smart Images
Figure CN116360319B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of electronic equipment technology, specifically providing a power supply timing control device and method. Background Technology
[0002] In electronic devices, such as control boards, strict power-on or power-off sequences for multiple power supplies are often required. To achieve this, a common design approach is to use dedicated power management integrated circuit chips.
[0003] However, some control boards may not have matching dedicated power management integrated circuit chips, or in certain special cases, the dedicated power management integrated circuit chip matching the control board may malfunction or be out of stock, rendering the control board unusable. In such cases, a power supply specifically designed for the control board is required. For example, a control board may have 10 power input pins, while a certain type of power management integrated circuit chip only has 8 output pins. In this case, two additional power supplies are needed to power the control board. Ensuring the correct power-on / off sequence and guaranteeing the safe and stable operation of the control board are technical problems that urgently need to be solved by those skilled in the art. Summary of the Invention
[0004] To overcome the above-mentioned defects, this invention is proposed to provide a power timing control device and method that can prevent incorrect power-on / off sequence of the control board and ensure the safe and stable operation of the control board when matching power supply to the control board.
[0005] In a first aspect, the present invention provides a power supply timing control device, the power supply timing control device comprising:
[0006] At least one target control module, the input terminal of each target control module is connected to a corresponding first control module and a corresponding second control module respectively, the target control module is used to generate a target control signal according to a first control signal output by the first control module or a second control signal output by the second control module, wherein the target control signal includes a target power-on signal or a target power-off signal;
[0007] Upon power-up, if the first control signal is a previous-level power-up signal, and the first voltage corresponding to the previous-level power-up signal meets a first preset condition, the target control module outputs the target power-up signal; or, if the first control signal is a first-level power-up signal, the target control module outputs the first-level power-up signal as the target power-up signal; wherein, the previous-level power-up signal is the signal corresponding to a power-up moment preceding and adjacent to the power-up moment of the target power-up signal; and the first-level power-up signal is the signal corresponding to the first power-up moment.
[0008] When power is off, if the second control signal is the previous level power-off signal, and the second voltage corresponding to the previous level power-off signal meets the second preset condition, the target control module outputs the target power-off signal; or, if the first control signal is the first level power-off signal, the target control module outputs the first level power-off signal as the target power-off signal; wherein, the previous level power-off signal is the signal corresponding to the power-off time before and adjacent to the power-off time of the target power-off signal; and the first level power-off signal is the signal corresponding to the first power-off time.
[0009] Furthermore, in the power timing control device described above, the target control module includes a signal triggering unit and an analog switch;
[0010] The first input terminal of the analog switch is connected to the corresponding first control module through the signal triggering unit; the second input terminal of the analog switch is connected to the corresponding second control module through the signal triggering unit.
[0011] When the first input terminal of the analog switch is connected to the output terminal of the analog switch, the target control module outputs the target power-on signal;
[0012] When the second input terminal of the analog switch is connected to the output terminal of the analog switch, the target control module outputs the target power-down signal.
[0013] Furthermore, the power timing control device described above also includes a power module;
[0014] The output terminal of the analog switch is connected to the power module;
[0015] The power module is connected to the power-on / off object;
[0016] When the output terminal of the analog switch inputs the target power-on signal to the power supply module, the power supply module powers on the power-on / off object;
[0017] When the output terminal of the analog switch inputs the target power-off signal to the power module, the power module powers off the target.
[0018] Furthermore, in the power timing control device described above, if the control signal output by the first control module is the power-on signal of the previous stage, the signal triggering unit includes a first comparison circuit and a second comparison circuit.
[0019] The first input terminal of the first comparator circuit is the first reference voltage terminal;
[0020] The first input terminal of the second comparator circuit is the second reference voltage terminal;
[0021] The second input terminal of the first comparator circuit is connected to the corresponding first control module; the output terminal of the first comparator circuit is connected to the first input terminal of the analog switch.
[0022] The second input terminal of the second comparator circuit is connected to the corresponding second control module; the output terminal of the second comparator circuit is connected to the second input terminal of the analog switch.
[0023] The first preset condition includes the first voltage being greater than the first reference voltage of the first comparison circuit;
[0024] The second preset condition includes the second voltage being greater than the second reference voltage of the second comparison circuit.
[0025] Furthermore, in the power timing control device described above, if the control signal output by the first control module is a first-level power-on signal, the signal triggering unit includes a third comparison circuit.
[0026] The first input terminal of the third comparator circuit is the second reference voltage terminal;
[0027] The second input terminal of the third comparison circuit is connected to the corresponding second control module; the output terminal of the third comparison circuit is connected to the second input terminal of the analog switch.
[0028] The first input terminal of the analog switch is connected to the first control module;
[0029] The second preset condition includes the second voltage being greater than the second reference voltage of the third comparison circuit.
[0030] Furthermore, in the power timing control device described above, if the control signal output by the second control module is a first-level power-down signal, the signal triggering unit includes a fourth comparison circuit;
[0031] The first input terminal of the fourth comparator circuit is the first reference voltage terminal;
[0032] The second input terminal of the fourth comparator circuit is connected to the corresponding first control module; the output terminal of the fourth comparator circuit is connected to the second input terminal of the analog switch.
[0033] The first input terminal of the analog switch is connected to the first control module;
[0034] The first preset condition includes the first voltage being greater than the first reference voltage of the fourth comparison circuit.
[0035] Furthermore, in the power timing control device described above, the third input terminal of the analog switch is also connected to the enable signal terminal;
[0036] When a power-on enable signal is input to the enable signal terminal, the first input terminal of the analog switch is connected to the output terminal of the analog switch.
[0037] When a power-down enable signal is input to the enable signal terminal, the second input terminal of the analog switch is connected to the output terminal of the analog switch.
[0038] In a second aspect, the present invention provides a power timing control method for the power timing control device described above, the power timing control method comprising:
[0039] Upon power-up, if the first control signal output by the first control module connected to the target control module in the power timing control device is the previous-level power-up signal, and the first voltage corresponding to the previous-level power-up signal meets the first preset condition, the target control module outputs the target power-up signal; or, if the first control signal is the first-level power-up signal, the target control module outputs the first-level power-up signal as the target power-up signal; wherein, the previous-level power-up signal is the signal corresponding to the power-up time preceding and adjacent to the power-up time of the target power-up signal; and the first-level power-up signal is the signal corresponding to the first power-up time.
[0040] When power is off, if the second control signal output by the second control module connected to the target control module is the previous level power-off signal, and the second voltage corresponding to the previous level power-off signal meets the second preset condition, the target control module outputs the target power-off signal; or, if the first control signal is the first level power-off signal, the target control module outputs the first level power-off signal as the target power-off signal; wherein, the previous level power-off signal is the signal corresponding to the power-off time before and adjacent to the power-off time of the target power-off signal; and the first level power-off signal is the signal corresponding to the first power-off time.
[0041] The above-described technical solutions of the present invention have at least one or more of the following beneficial effects:
[0042] In implementing the technical solution of this invention, a target control module is set up for the target control signal, and the target control module is connected to a corresponding first control module and a corresponding second control module respectively. When powered on, if the control signal output by the first control module is a previous-level power-on signal, and the first voltage corresponding to the previous-level power-on signal meets a first preset condition, the target control module outputs the target power-on signal; or, if the control signal output by the first control module is a first-level power-on signal, the target control module outputs the first-level power-on signal as the target power-on signal. When powered off, if the control signal output by the second control module is a previous-level power-off signal, and the second voltage corresponding to the previous-level power-off signal meets a second preset condition, the target control module outputs the target power-off signal; or, if the control signal output by the first control module is a first-level power-off signal, the target control module outputs the first-level power-off signal as the target power-off signal. This achieves strict control over the power-on / off sequence of the target control signal, enabling the control board to power on and off in sequence, ensuring the safe and stable operation of the control board. Attached Figure Description
[0043] The disclosure of this invention will become more readily understood with reference to the accompanying drawings. It will be readily understood by those skilled in the art that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention. Furthermore, similar numbers in the drawings are used to denote similar components, wherein:
[0044] Figure 1 This is a main structural block diagram of a power supply timing control device according to an embodiment of the present invention;
[0045] Figure 2 yes Figure 1 A specific form of topological graph;
[0046] Figure 3 This is a schematic flowchart of the main steps of a power supply timing control method according to an embodiment of the present invention. Detailed Implementation
[0047] Some embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.
[0048] In the description of this invention, "module" and "processor" can include hardware, software, or a combination of both. A module can include hardware circuitry, various suitable sensors, communication ports, memory, and may also include software components, such as program code, or a combination of software and hardware. A processor can be a central processing unit, microprocessor, image processor, digital signal processor, or any other suitable processor. The processor has data and / or signal processing capabilities. The processor can be implemented in software, in hardware, or a combination of both. Non-transitory computer-readable storage media includes any suitable medium capable of storing program code, such as magnetic disks, hard disks, optical disks, flash memory, read-only memory, random access memory, etc. The term "A and / or B" means all possible combinations of A and B, such as only A, only B, or A and B. The terms "at least one A or B" or "at least one of A and B" have a similar meaning to "A and / or B" and can include only A, only B, or A and B. The singular terms "a" or "this" can also include plural forms.
[0049] For some control boards, there may not be a matching dedicated power management integrated circuit chip. Or, in some special cases, the dedicated power management integrated circuit chip that matches the control board may be faulty or out of stock, making the control board unusable. In such cases, it is necessary to match a power supply to the control board and control the power-on and power-off sequence of the matched power supply in order to enable power supply to the control board.
[0050] Therefore, in order to solve the above-mentioned technical problems, the present invention provides the following technical solution:
[0051] See appendix Figure 1 , Figure 1 This is a main structural block diagram of a power supply timing control device according to an embodiment of the present invention. Figure 1 As shown, the power timing control device 1 in this embodiment of the invention mainly includes at least one target control module 11 that generates target control signals. The inputs of each target control module 11 are respectively connected to a first control module 2 and a second control module 3. The target control module 11 outputs a target control signal according to the control signal output by the first control module 2 or the control signal output by the second control module 3. All control signals are used to control the switching of the power module and form an overall timing control signal, so that the switching module controls the power-on and / or power-off of the power-on and / or power-off objects according to a predetermined power-on and / or power-off sequence.
[0052] In one specific implementation, upon power-up, if the first control signal is a previous-level power-up signal, and the first voltage corresponding to the previous-level power-up signal meets a first preset condition, the target control module outputs the target power-up signal; or, if the first control signal is a first-level power-up signal, the target control module outputs the first-level power-up signal as the target power-up signal; wherein, the previous-level power-up signal is the signal corresponding to the power-up time preceding and adjacent to the power-up time of the target power-up signal in the timing control signals; and the first-level power-up signal is the signal corresponding to the first power-up time in the timing control signals.
[0053] When power is off, if the second control signal is the previous level power-off signal, and the second voltage corresponding to the previous level power-off signal meets the second preset condition, the target control module outputs the target power-off signal; or, if the first control signal is the first level power-off signal, the target control module outputs the first level power-off signal as the target power-off signal; wherein, the previous level power-off signal is the signal corresponding to the power-off time before and adjacent to the power-off time of the target power-off signal in the timing control signal; the first level power-off signal is the signal corresponding to the first power-off time in the timing control signal.
[0054] Specifically, such as Figure 1 As shown, the target control module may include a signal triggering unit 111 and an analog switch 112. The first input terminal of the analog switch 112 is connected to the corresponding first control module 2 through the signal triggering unit 111; the second input terminal of the analog switch 112 is connected to the corresponding second control module 3 through the signal triggering unit 111. Figure 1 The first input terminal and the second input terminal of analog switch 112 are not distinguished in the display.
[0055] In a specific implementation, if the power-on / off object, such as the control board, lacks a specific power timing control device, or if the specific power timing control device is damaged, multiple mismatched power timing control devices are often required to control the control board. This can easily lead to incorrect power-on / off sequence for different power timing control devices. Therefore, in this embodiment, the control signal most prone to power-on / off sequence errors can be selected from multiple time-ordered control signals controlling the power-on / off of the object as the target control signal. In this embodiment, the control module outputting this target control signal can be designated as the target control module 11. This target control module 11 can generate the target control signal at the required power-on / off time during the power-on / off process of the control board. The target control signal can include a target power-on signal and a target power-off signal. It can include pulse signals, square wave signals, etc., and this embodiment does not impose specific limitations.
[0056] In a specific implementation, if the target control signal is the target power-on signal corresponding to the first power-on moment in the overall timing control signal, then during the power-on process, the first control signal output by the first control module 2 is the first-level power-on signal. If the target control signal is the target power-off signal corresponding to the last power-off moment in the overall timing control signal, then during the power-off process, the second control signal output by the second control module 3 is the previous-level power-off signal.
[0057] Specifically, upon power-on, the first input terminal of the analog switch 112 is connected to its output terminal, and the first control module 2 outputs a first-level power-on signal. The target control module 111 then outputs this first-level power-on signal as the target power-on signal. Furthermore, upon reaching the second power-on moment, the second control module 3 controls the output of a power-on signal, thereby ensuring that the powered-on objects are powered on sequentially according to the order of the first and second power-on moments, meaning that the target power-on signal generated by the target control module 11 precedes the power-on signal generated by the second control module 3.
[0058] When power is off, the second input terminal of the analog switch 112 is connected to the output terminal of the analog switch 112. The second control module 3 first outputs the previous power-off signal. When the second voltage corresponding to the previous power-off signal meets the second preset condition, the target control module can output the target power-off signal corresponding to the last power-off time, so that the power-off objects are powered off sequentially according to the power-off time corresponding to the power-off signal of the second control module 3 and the last power-off time. That is, the target power-off signal generated by the target control module 11 is after the power-off signal generated by the second control module 3.
[0059] It should be noted that in the above embodiments, since the power-on signal at the second power-on moment is not the target power-on signal to be controlled, the power-on signal at the second power-on moment can be generated after the target power-on signal corresponding to the first power-on moment using the original power-on method. Therefore, power-on control can be performed according to the original power-on method. If the power-on signal at the second power-on moment is also the target power-on signal to be controlled, it can be controlled according to the power-on / off method of this application (see the following description of power-on / off control for the target power-on signal corresponding to the intermediate power-on moment and the target power-off signal corresponding to the intermediate power-off moment in a timing control signal where the target control signal is the whole) to achieve power-on / off in sequence.
[0060] In a specific implementation, if the target control signal is the target power-on signal corresponding to the last power-on moment of the overall timing control signal, then the first control signal output by the first control module 2 during the power-on process is the power-on signal of the previous level. If the target control signal is the target power-off signal corresponding to the first power-off moment of the overall timing control signal, then the second control signal output by the second control module 3 during the power-off process is the power-off signal of the first level.
[0061] Specifically, when powered on, the first input terminal of the analog switch 112 is connected to the output terminal of the analog switch 112. The first control module 2 first outputs the previous power-on signal. When the first voltage corresponding to the previous power-on signal meets the first preset condition, the target control module 11 can output the target power-on signal corresponding to the last power-on time, thereby realizing that the power-on and power-off objects are powered on sequentially according to the power-on time corresponding to the previous power-on signal of the first control module 2 and the last power-on time. That is, the target power-on signal is generated after the power-on signal of the first control module.
[0062] When power is off, the second input terminal of the analog switch is connected to the output terminal of the analog switch, and the second control module 3 outputs a first-level power-off signal. The target control module 11 can output the first-level power-off signal as the target power-off signal. Furthermore, when the second power-off moment is reached, the first control module 2 controls the output of a power-off signal, thereby ensuring that the powered-off objects are powered off sequentially according to the order of the first power-off moment and the second power-off moment, i.e., the target power-off signal generated by the target control module 11 precedes the power-off signal generated by the first control module 2.
[0063] It should be noted that in the above embodiments, since the power-down signal at the second power-down moment is not the target power-down signal to be controlled, the power-down signal at the second power-down moment can be generated after the target power-down signal corresponding to the first power-down moment using the original power-down method. Therefore, power-down control can be performed according to the original power-down method. If the power-down signal at the second power-down moment is also the target power-down signal to be controlled, it can be controlled according to the power-up and power-down method of this application (see the following description of power-up and power-down control for the target power-up signal corresponding to the intermediate power-up moment and the target power-down signal corresponding to the intermediate power-down moment of the timing control signal as a whole) to achieve power-up and power-down in sequence.
[0064] In a specific implementation process, if the target control signal is the target power-on signal corresponding to the intermediate power-on moment of the overall timing control signal or the target power-off signal corresponding to the intermediate power-on moment, then the first control signal output by the first control module 2 during the power-on process is the power-on signal of the previous level, and the second control signal output by the second control module 3 during the power-off process is the power-off signal of the previous level.
[0065] Specifically, upon power-on, the first input terminal of the analog switch is connected to the output terminal of the analog switch. The first control module 2 first outputs the previous-level power-on signal. When the first voltage corresponding to the previous-level power-on signal meets the first preset condition, the target control module can output the target power-on signal corresponding to the intermediate power-on moment, ensuring that the target power-on signal corresponding to the intermediate power-on moment is generated after the power-on signal of the first control module. Furthermore, when the next power-on moment after the intermediate power-on moment is reached, the second control module 3 outputs the power-on signal, realizing that the power-on and power-off objects are powered on in the order of the previous power-on moment, the intermediate power-on moment, and the next power-on moment. That is, after the first control module 1 generates the power-on signal, the target control module 11 can generate the target power-on signal, and then the second control module 3 generates the power-on signal.
[0066] When power is off, the second input terminal of the analog switch is connected to the output terminal of the analog switch. The second control module 3 first outputs the previous power-off signal. When the second voltage corresponding to the previous power-off signal meets the second preset condition, the target control module can output the target power-off signal corresponding to the intermediate power-off moment, so that the target power-off signal corresponding to the intermediate power-off moment is generated after the power-off signal of the second control module. In addition, when the next power-off moment after the intermediate power-off moment is reached, the first control module 2 outputs the power-off signal, so that the power-off object is powered off in the order of the previous power-off moment, the intermediate power-off moment, and the next power-off moment. That is, after the second control module 3 generates the power-off signal, the target control module 11 can generate the target power-off signal, and then the first control module 2 generates the power-off signal.
[0067] In a specific implementation process, such as Figure 1 As shown, the third input terminal of the analog switch 112 is also connected to the enable signal terminal 4. When the enable signal terminal 4 receives a power-on enable signal, it connects the first input terminal of the analog switch 112 to its output terminal; when the enable signal terminal 4 receives a power-off enable signal, it connects the second input terminal of the analog switch 112 to its output terminal. The specific implementation circuit of the enable signal terminal 4 can be found in existing records and will not be elaborated here.
[0068] See Figure 2 , Figure 2 yes Figure 1 A specific form of topological graph. Figure 2 Includes two target control modules 11 ( Figure 2 (Not shown in the diagram), the explanation will take the target power-on signal corresponding to the intermediate power-on moment of the timing control signal (which is a whole) as an example. Figure 2As shown, the signal triggering unit 111 may include a first comparison circuit u1 and a second comparison circuit u2. The specific circuit structures of the first comparison circuit u1 and the second comparison circuit u2 can be found in existing related technologies and will not be described in detail here. The analog switches 112 in the two target control modules 11 are... Figure 2 The two are combined into one representation.
[0069] In one specific implementation, the first input terminal of the first comparison circuit is the first reference voltage terminal, and the first input terminal of the second comparison circuit is the second reference voltage terminal. The first input terminals of the first comparison circuit u1 and the second comparison circuit u2 are respectively connected to the input terminals of the reference voltage generating device 5; the second input terminal of the first comparison circuit u1 is connected to the corresponding first control module 2; the output terminal of the first comparison circuit u1 is connected to the first input terminal of the analog switch 112; the second input terminal of the second comparison circuit u2 is connected to the corresponding second control module 3; and the output terminal of the second comparison circuit u2 is connected to the second input terminal of the analog switch 112. The reference voltage generating device 5 generates a first reference voltage for the first comparison circuit u1 and a second reference voltage for the second comparison circuit u2. The first reference voltage and the second reference voltage can be the same or different.
[0070] When the power-on / off object needs to be powered on, the first input terminal of the analog switch 112 is connected to the output terminal of the analog switch 112. If the first voltage corresponding to the previous power-on signal input by the first control module 2 is greater than the first reference voltage of the first comparison circuit u1, the output terminal of the analog switch 112 outputs the target power-on signal, so that the power-on / off object can be powered on according to the required timing.
[0071] When the power-on / off object needs to be powered down, the second input terminal of the analog switch 112 is connected to the output terminal of the analog switch 112. If the second voltage corresponding to the previous power-down signal input by the second control module 3 is greater than the second reference voltage, the output terminal of the analog switch 112 outputs the target power-down signal, so that the power-on / off object can be powered down according to the required timing.
[0072] like Figure 2As shown, the power-on / power-off object required in this embodiment can have 6 power input pins. The power control terminals corresponding to each power input pin are denoted as the first power control terminal G1 to the sixth power control terminal G6. A specific power management integrated circuit chip can provide the outputs of the first power control terminal G1, the third power control terminal G3, the fourth power control terminal G4, and the sixth power control terminal G6. These power control terminals can power on / off the object in sequence. At this time, the power management integrated circuit chip plus two other power modules can power on / off the object.
[0073] In a specific implementation, to ensure that the control signals from the first power control terminal G1 to the third power control terminal G3 are output sequentially, the control signal of the second power control terminal G2 can be used as the target control signal, and the second power control terminal G2 can be used as an output terminal of the target control module 11. The first power control terminal G1 can be used as the corresponding first control module 3. Figure 2 One output terminal (not shown in the diagram), the third power control terminal G3 can be used as the corresponding second control module 4 ( Figure 2 (Not shown in the diagram) is one of the output terminals. Similarly, to ensure that the fourth power control terminal G4 to the third power control terminal G6 can be powered on and off in sequence, the control signal of the fifth power control terminal G5 can be used as the target control signal, and the fifth power control terminal G5 can be used as one of the output terminals of the target control module 11. The fourth power control terminal G4 can be used as the corresponding first control module 3 ( Figure 2 The sixth power control terminal G6 (not shown in the diagram) can be used as the corresponding second control module 4 ( Figure 2 (not shown in the image) is one of the output terminals.
[0074] Figure 2 The operation process of the power supply timing control device 1 shown is as follows:
[0075] Upon power-up: A power-up enable signal is input to enable signal terminal 4, connecting input terminals a and b of analog switch 112 to output terminal out1 of analog switch 112 respectively. The first power control terminal G1 outputs a power-up signal. When the voltage of the power-up signal output by the first power control terminal G1 is greater than the first reference voltage (1.5V) of the first comparison circuit u1 of the first signal trigger unit 111, the second power control terminal G2 outputs a target power-up signal. When a third power control terminal G3 is required to output a power-up signal, it outputs the power-up signal. When a fourth power-up signal is required... When the power control terminal G4 outputs a power-on signal, the fourth power control terminal G4 outputs a power-on signal. When the voltage of the power-on signal output by the fourth power control terminal G4 is greater than the second reference voltage 0.89V of the first comparison circuit u1 of the second signal trigger unit 111, the fifth power control terminal G5 outputs a target power-on signal. When the sixth power control terminal G6 needs to output a power-on signal, the sixth power control terminal G6 outputs a power-on signal. In this way, the power-on and power-off objects can be powered on in the order of the power-on signal corresponding to the first power control terminal G1 to the power-on signal corresponding to the sixth power control terminal G6.
[0076] During power-down: A power-down enable signal is input to enable signal terminal 4, controlling input terminals c and d of analog switch 112 to connect to output terminal out2 of analog switch 112 respectively. The sixth power control terminal G6 outputs a power-down signal. When the voltage of the power-on signal output by the sixth power control terminal G6 is greater than the fourth reference voltage 0.7V of the second comparator circuit u2 of the second signal trigger unit 111, the fifth power control terminal G5 outputs a target power-down signal. When the fourth power control terminal G4 needs to output a power-down signal, it outputs the power-down signal again. When the third power control terminal G3 outputs a power-down signal, the third power control terminal G3 outputs a target power-down signal. When the voltage of the power-on signal output by the third power control terminal G3 is greater than the fifth reference voltage 1.5V of the second comparison circuit u2 of the first signal trigger unit 111, the second power control terminal G2 outputs a power-down signal. When the first power control terminal G1 needs to output a power-down signal, the first power control terminal G1 outputs a power-down signal. In this way, the power-on and power-off objects can be powered down in the order of the power-down signal corresponding to the sixth power control terminal G6 to the power-down signal corresponding to the first power control terminal G1.
[0077] It should be noted that the reference voltage of each comparator in the above example can be set according to actual needs in order to control the timing of the generation of the target control signal.
[0078] In a specific implementation, if the control signal output by the first control module is a first-level power-on signal; the signal triggering unit includes a third comparison circuit, that is, the signal triggering unit only needs to include one comparator, and the third comparator can be only a... Figure 2 The second comparator u2 in the first signal trigger unit is no longer included, and the first comparator u1 is no longer listed here. The first input terminal of the third comparator circuit is the second reference voltage terminal; the second input terminal of the third comparator circuit is connected to the corresponding second control module; the output terminal of the third comparator circuit is connected to the second input terminal of the analog switch; the first input terminal of the analog switch is connected to the first control module; the second preset condition includes that the second voltage is greater than the second reference voltage of the second comparator circuit.
[0079] In a specific implementation, if the control signal output by the second control module is a first-level power-down signal; the signal triggering unit includes a fourth comparison circuit, that is, the signal triggering unit only needs to include one comparator, and the third comparator can be only a... Figure 2 The second comparator u2 in the first signal trigger unit is no longer included, and the first comparator u1 is no longer listed here. The first input terminal of the fourth comparator circuit is the first reference voltage terminal; the second input terminal of the fourth comparator circuit is connected to the corresponding first control module; the output terminal of the fourth comparator circuit is connected to the second input terminal of the analog switch; the first input terminal of the analog switch is connected to the first control module; the first preset condition includes the first voltage being greater than the first reference voltage of the first comparator circuit.
[0080] In a specific implementation process, such as Figure 1 and Figure 2 As shown, the power timing control device 1 may further include a power module 12; the output terminal of the analog switch 112 is connected to the power module 12. The power module 12 is connected to the power-on / off object.
[0081] In a specific implementation, when the output terminal of the analog switch 112 inputs the target power-on signal from the target control signal to the power module 12, the power module 12 powers on the object being powered on or off; when the output terminal of the analog switch 112 inputs the target power-off signal from the target control signal to the power module 12, the power module 12 powers off the object being powered on or off.
[0082] It should be noted that, Figure 1 and Figure 2The example described uses the connection between the analog switch 112 in each target control module 11 and a power supply module 12 as an example. In reality, all power supply modules 12 can be replaced by a single integrated power supply module. Control signals from other control modules can also be input to this integrated power supply module. Conversely, control signals from other control modules can be input to their respective corresponding power supply modules.
[0083] The power sequence control device of this embodiment sets a target control module 11 for the target control signal and connects the target control module 11 to the corresponding first control module 2 and the corresponding second control module 3. When powering on, if the control signal output by the first control module 2 is the previous level power-on signal, and the first voltage corresponding to the previous level power-on signal meets a first preset condition, the target control module 11 outputs the target power-on signal; or, if the control signal output by the first control module 2 is the first level power-on signal, the target control module 11 outputs the first level power-on signal as the target power-on signal. When powering off, if the control signal output by the second control module 3 is the previous level power-off signal, and the second voltage corresponding to the previous level power-off signal meets a second preset condition, the target control module 11 outputs the target power-off signal; or, if the control signal output by the first control module 11 is the first level power-off signal, the target control module 11 outputs the first level power-off signal as the target power-off signal. This achieves strict control over the power-on and power-off sequence of the target control signal, enabling the control board to power on and off in sequence and ensuring the safe and stable operation of the control board.
[0084] In one specific implementation, the signal triggering unit 111, the analog switch 112, and the power supply module 12 are integrated. That is, the signal triggering unit 111, the analog switch 112, and the power supply module 12 can be simultaneously installed on a single circuit board.
[0085] In one specific implementation, the signal triggering unit 111, the analog switch 112, and the power supply module 12 are not integrated; instead, the power supply module 12 is located within the power-on / off object. That is, the power supply module 12 can be located within the control board.
[0086] Furthermore, the present invention also provides a power supply timing control method.
[0087] See appendix Figure 3 , Figure 3 This is a schematic flowchart illustrating the main steps of a power supply timing control method according to an embodiment of the present invention. Figure 3 As shown, the power supply timing control method in this embodiment may specifically include the following steps:
[0088] Step 301: When powering on, if the first control signal output by the first control module 2 connected to the target control module 11 in the power timing control device 1 is the previous level power-on signal, and the first voltage corresponding to the previous level power-on signal meets the first preset condition, the target control module outputs the target power-on signal; or, if the first control signal is the first level power-on signal, the target control module 11 outputs the first level power-on signal as the target power-on signal.
[0089] Specifically, when the first voltage corresponding to the previous-level power-on signal is greater than the first reference voltage, the target control module in the power supply timing control device outputs the target power-on signal. The previous-level power-on signal is the signal corresponding to a power-on moment preceding and adjacent to the power-on moment of the target power-on signal; the first-level power-on signal is the signal corresponding to the first power-on moment.
[0090] Step 302: When powering down, if the second control signal output by the second control module 2 connected to the target control module 11 is the previous level power-down signal, and the second voltage corresponding to the previous level power-down signal meets the second preset condition, the target control module 11 outputs the target power-down signal; or, if the first control signal is the first level power-down signal, the target control module 11 outputs the first level power-down signal as the target power-down signal.
[0091] Specifically, when the second voltage corresponding to the previous-level power-down signal is greater than the second reference voltage, the target control module outputs the target power-down signal. Here, the previous-level power-down signal is the signal corresponding to a power-down moment preceding and adjacent to the power-down moment of the target power-down signal; the first-level power-down signal is the signal corresponding to the first power-down moment.
[0092] In one specific implementation, when the enable signal terminal 4 receives a power-on enable signal, the first input terminal of the analog switch 112 is connected to the output terminal of the analog switch 112 to execute the power-on process; when the enable signal terminal 4 receives a power-off enable signal, the second input terminal of the analog switch 112 is connected to the output terminal of the analog switch 112 to execute the power-off process.
[0093] It should be noted that although the steps in the above embodiments are described in a specific order, those skilled in the art will understand that in order to achieve the effects of the present invention, different steps do not necessarily have to be executed in such an order. They can be executed simultaneously (in parallel) or in other orders, and these variations are all within the scope of protection of the present invention.
[0094] Furthermore, it should be understood that since the various modules are only provided to illustrate the functional units of the device of the present invention, the physical devices corresponding to these modules may be the processor itself, or a part of the processor's software, hardware, or a combination of software and hardware. Therefore, the number of modules shown in the figures is merely illustrative.
[0095] Those skilled in the art will understand that the various modules in the device can be adaptively split or combined. Such splitting or combining of specific modules will not cause the technical solution to deviate from the principles of the present invention; therefore, the technical solutions after splitting or combining will fall within the protection scope of the present invention.
[0096] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.
Claims
1. A power supply timing control device, characterized in that, include At least one target control module is provided, and the input terminal of each target control module is connected to a corresponding first control module and a corresponding second control module, respectively. The target control module is used to generate a target control signal based on a first control signal output by the first control module or a second control signal output by the second control module, wherein the target control signal includes a target power-on signal or a target power-off signal; wherein... Upon power-up, if the first control signal is a previous-level power-up signal, and the first voltage corresponding to the previous-level power-up signal meets a first preset condition, the target control module outputs the target power-up signal; or, if the first control signal is a first-level power-up signal, the target control module outputs the first-level power-up signal as the target power-up signal; wherein, the previous-level power-up signal is the signal corresponding to a power-up moment preceding and adjacent to the power-up moment of the target power-up signal; and the first-level power-up signal is the signal corresponding to the first power-up moment. When power is off, if the second control signal is the previous level power-off signal, and the second voltage corresponding to the previous level power-off signal meets the second preset condition, the target control module outputs the target power-off signal; or, if the first control signal is the first level power-off signal, the target control module outputs the first level power-off signal as the target power-off signal; wherein, the previous level power-off signal is the signal corresponding to the power-off time before and adjacent to the power-off time of the target power-off signal; and the first level power-off signal is the signal corresponding to the first power-off time. The target control module includes a signal triggering unit and an analog switch; The first input terminal of the analog switch is connected to the corresponding first control module through the signal triggering unit; the second input terminal of the analog switch is connected to the corresponding second control module through the signal triggering unit. When the first input terminal of the analog switch is connected to the output terminal of the analog switch, the target control module outputs the target power-on signal; When the second input terminal of the analog switch is connected to the output terminal of the analog switch, the target control module outputs the target power-down signal.
2. The power supply timing control device according to claim 1, characterized in that, It also includes a power module; The output terminal of the analog switch is connected to the power module; The power module is connected to the power-on / off object; When the output terminal of the analog switch inputs the target power-on signal to the power supply module, the power supply module powers on the power-on / off object; When the output terminal of the analog switch inputs the target power-off signal to the power module, the power module powers off the target.
3. The power supply timing control device according to claim 1, characterized in that, If the control signal output by the first control module is the power-on signal of the previous stage, the signal triggering unit includes a first comparison circuit and a second comparison circuit; The first input terminal of the first comparator circuit is the first reference voltage terminal; The first input terminal of the second comparator circuit is the second reference voltage terminal; The second input terminal of the first comparator circuit is connected to the corresponding first control module; the output terminal of the first comparator circuit is connected to the first input terminal of the analog switch. The second input terminal of the second comparator circuit is connected to the corresponding second control module; the output terminal of the second comparator circuit is connected to the second input terminal of the analog switch. The first preset condition includes the first voltage being greater than the first reference voltage of the first comparison circuit; The second preset condition includes the second voltage being greater than the second reference voltage of the second comparison circuit.
4. The power supply timing control device according to claim 1, characterized in that, If the control signal output by the first control module is a first-level power-on signal, the signal triggering unit includes a third comparison circuit; The first input terminal of the third comparator circuit is the second reference voltage terminal; The second input terminal of the third comparison circuit is connected to the corresponding second control module; the output terminal of the third comparison circuit is connected to the second input terminal of the analog switch. The first input terminal of the analog switch is connected to the first control module; The second preset condition includes the second voltage being greater than the second reference voltage of the third comparison circuit.
5. The power supply timing control device according to claim 1, characterized in that, If the control signal output by the second control module is a first-level power-down signal, the signal triggering unit includes a fourth comparison circuit; The first input terminal of the fourth comparator circuit is the first reference voltage terminal; The second input terminal of the fourth comparator circuit is connected to the corresponding first control module; the output terminal of the fourth comparator circuit is connected to the second input terminal of the analog switch. The first input terminal of the analog switch is connected to the first control module; The first preset condition includes the first voltage being greater than the first reference voltage of the fourth comparison circuit.
6. The power supply timing control device according to claim 1, characterized in that, The third input terminal of the analog switch is also connected to the enable signal terminal; When a power-on enable signal is input to the enable signal terminal, the first input terminal of the analog switch is connected to the output terminal of the analog switch. When a power-down enable signal is input to the enable signal terminal, the second input terminal of the analog switch is connected to the output terminal of the analog switch.
7. A power supply timing control method based on the power supply timing control device according to any one of claims 1-6, characterized in that, include: Upon power-up, if the first control signal output by the first control module connected to the target control module in the power timing control device is the previous-level power-up signal, and the first voltage corresponding to the previous-level power-up signal meets the first preset condition, the target control module outputs the target power-up signal; or, if the first control signal is the first-level power-up signal, the target control module outputs the first-level power-up signal as the target power-up signal; wherein, the previous-level power-up signal is the signal corresponding to the power-up time preceding and adjacent to the power-up time of the target power-up signal; and the first-level power-up signal is the signal corresponding to the first power-up time. When power is off, if the second control signal output by the second control module connected to the target control module is the previous level power-off signal, and the second voltage corresponding to the previous level power-off signal meets the second preset condition, the target control module outputs the target power-off signal; or, if the first control signal is the first level power-off signal, the target control module outputs the first level power-off signal as the target power-off signal; wherein, the previous level power-off signal is the signal corresponding to the power-off time before and adjacent to the power-off time of the target power-off signal; and the first level power-off signal is the signal corresponding to the first power-off time.
8. The power supply timing control method according to claim 7, characterized in that, Also includes: When a power-on enable signal is input to the enable signal terminal connected to the analog switch, the first input terminal of the analog switch is connected to the output terminal of the analog switch to execute the power-on process. When a power-down enable signal is input to the enable signal terminal, the second input terminal of the analog switch is connected to the output terminal of the analog switch to execute the power-down process.
9. The power supply timing control method according to claim 7, characterized in that, When the first voltage corresponding to the previous power-on signal meets the first preset condition, the target control module outputs the target power-on signal, including: When the first voltage corresponding to the previous power-on signal is greater than the first reference voltage, the target control module in the power timing control device outputs the target power-on signal; When the second voltage corresponding to the previous power-down signal meets the second preset condition, the target control module outputs the target power-down signal, including: When the second voltage corresponding to the previous power-down signal is greater than the second reference voltage, the target control module outputs the target power-down signal.
Citation Information
Patent Citations
Multi-power-supply management system of integrated circuit testing machine
CN111934530A