Circuit capable of adjusting boosting time of power supply and electronic equipment

Abstract

The embodiment of the utility model provides a circuit capable of adjusting the boosting time of a power supply and electronic equipment. The circuit capable of adjusting the boosting time of the power supply comprises a power supply management module and a boosting time management module, the power management module comprises a voltage output end, and the voltage output end is coupled to a voltage input end of a power utilization module and is grounded through a variable RC group. The variable RC group comprises a variable resistor group and a variable capacitor group which are connected in series. The boost time management module comprises a processing unit, a parameter setting unit, a measuring unit and an adjusting unit. The parameter setting unit is used for being operated to input a target time parameter; the measuring unit obtains an initial resistance value of the variable resistor group and an initial capacitance value of the variable capacitor group; the processing unit judges whether the initial resistance value and the initial capacitance value are matched with a target time parameter or not, and obtains a first resistance value and a first capacitance value according to the target time parameter when the initial resistance value and the initial capacitance value are not matched; the adjusting unit adjusts the variable resistor group according to the first resistance value and adjusts the variable capacitor group according to the first capacitance value.

Description

TECHNICAL FIELD

[0001] The utility model relates to power control technical field, especially relates to a circuit and electronic equipment that adjustable power boost time. BACKGROUND

[0002] At present, in the electronic equipment, each power module basically utilizes the capacitor and the resistance to set the power boost time, that is, the time length of signal rising / falling. Among them, different power modules usually need to be driven under the signal voltage with different power boost times due to the difference of the functions they provide. That is, each power module needs to be electrically coupled with the capacitor with appropriate capacity and the resistor with appropriate resistance according to the time length of signal rising / falling it needs. In this way, preparing an electronic equipment needs to purchase resistors and capacitors of multiple specifications, and the resistor or capacitor needs to be replaced many times in the development process of the electronic equipment, which is low in efficiency.

[0003] Therefore, how to design each circuit in the electronic equipment to improve the development efficiency thereof has become a new research topic. SUMMARY

[0004] Embodiments of the utility model provide a circuit capable of adjusting power boost time, the number of the circuit capable of adjusting power boost time is multiple, and the circuit is respectively used for controlling the power boost time of multiple power modules to improve the development efficiency of the electronic equipment.

[0005] Embodiments of the utility model provide a circuit capable of adjusting power boost time, the number of the circuit capable of adjusting power boost time is multiple, and the circuit is respectively used for controlling the power boost time of multiple power modules to improve the development efficiency of the electronic equipment.

[0006] The power management module includes a voltage output end, the voltage output end is coupled to the voltage input end of a power module, and is grounded through a variable RC group; wherein the variable RC group includes a variable resistor group and a variable capacitor group in series; and

[0007] The boost time management module includes a processing unit, a parameter setting unit, a measurement unit and an adjusting unit coupled to the processing unit, the measurement unit is connected to the variable RC group, and the adjusting unit is connected to the adjusting end of the variable resistor group and the adjusting end of the variable capacitor group; wherein the parameter setting unit is used to be operated to input the target time parameter matched with the power module; the measurement unit obtains the initial resistance value of the variable resistor group and the initial capacitance value of the variable capacitor group; the processing unit judges whether the initial resistance value and the initial capacitance value match the target time parameter, and obtains the first resistance value and the first capacitance value according to the target time parameter when they do not match; the adjusting unit adjusts the variable resistor group according to the first resistance value, and adjusts the variable capacitor group according to the first capacitance value.

[0008] Preferably, the boost time management module further comprises a storage unit coupled to the parameter setting unit, the storage unit storing a firmware, wherein the firmware comprises the target time parameter.

[0009] Preferably, the variable resistance group has a fixed resistance value.

[0010] Alternatively, the variable resistance group has a fixed resistance value.

[0011] Preferably, the boost time management module further comprises a storage unit storing a correspondence between time parameters and resistance values and capacitance values, and the processing unit obtains corresponding resistance value and capacitance value as the first resistance value and the first capacitance value according to the target time parameter and the correspondence.

[0012] Preferably, the variable resistance group comprises a plurality of resistors connected in series, and a digital single-pole multi-throw switch connected in series with the plurality of resistors, and the adjusting unit controls the digital single-pole multi-throw switch to adjust the variable resistance group.

[0013] Preferably, the variable capacitance group comprises a plurality of capacitors connected in parallel, and a plurality of digital switches connected in series with each capacitor, and the adjusting unit controls the on-off of the plurality of digital switches to adjust the variable capacitance group.

[0014] Preferably, the power management module further comprises a normally closed switch connected in series between the voltage output terminal and the variable RC group; the processing unit of the boost time management module is coupled to the control terminal of the normally closed switch, and when the initial resistance value and the initial capacitance value do not match the target time parameter, the processing unit controls the normally closed switch to be open to adjust the variable resistance group and the variable capacitance group, and controls the normally closed switch to be closed after adjustment.

[0015] Preferably, the measurement unit is connected between the variable resistance group and the variable capacitance group.

[0016] The embodiment of the utility model provides an electronic equipment, comprising:

[0017] A first and a second power consumption module, the time parameters of the power supply voltages required by the two power consumption modules are different; and

[0018] Two adjustable power boost time circuits, the two adjustable power boost time circuits are connected with the two power consumption modules respectively, the first resistance value of one adjustable power boost time circuit is different from the first resistance value of another adjustable power boost time circuit, or the first capacitance value of one adjustable power boost time circuit is different from the first capacitance value of another adjustable power boost time circuit.

[0019] Preferably, in case the second power consumption module is replaced by a third power consumption module, the adjustable power supply boost time circuit adjusts the variable resistance group and the variable capacitance group according to a time parameter of a power supply voltage required by the third power consumption module.

[0020] Compared with the prior art, the embodiment of the utility model provides a kind of adjustable power supply boost time circuit and electronic equipment, and the adjustable power supply boost time circuit includes power management module and boost time management module.The power management module includes voltage output end, the voltage output end is coupled to the voltage input end of a power consumption module, and is grounded by a variable RC group.Various RC groups include series variable resistance group and variable capacitance group.Boost time management module includes processing unit and respectively coupled to the parameter setting unit of the processing unit, measuring unit and adjusting unit, the measuring unit is connected to the variable RC group, and the adjusting unit is connected to the adjusting end of the variable resistance group and the adjusting end of the variable capacitance group.Various parameter setting units are used to be operated to input target time parameter matched with the power consumption module;The measuring unit obtains the initial resistance value of the variable resistance group and the initial capacitance value of the variable capacitance group;The processing unit judges whether the initial resistance value and the initial capacitance value match the target time parameter, and obtains first resistance value and first capacitance value according to the target time parameter when not matching;The adjusting unit adjusts the variable resistance group according to the first resistance value, and adjusts the variable capacitance group according to the first capacitance value. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the structure block diagram of adjustable power supply boost time circuit in an embodiment of the utility model;

[0022] Figure 2 It is the working step schematic drawing of adjustable power supply boost time circuit in an embodiment of the utility model;

[0023] Figure 3 It is the working step schematic drawing of adjustable resistance / capacitance in an embodiment of the utility model;

[0024] Figure 4 It is the working step schematic drawing of adjustable resistance / capacitance in another embodiment of the utility model;

[0025] Figure 5 It is the working step schematic drawing of adjustable resistance / capacitance in still another embodiment of the utility model. DETAILED DESCRIPTION

[0026] To make the purpose, structure, features and functions of the utility model further understood, detailed description is as follows with example.

[0027] Certain terms are used throughout the description and claims to refer to particular components. As one skilled in the art will appreciate, manufacturers can refer to a component by different names. This document does not intend to distinguish between components that differ in name but not in function. In the description and claims herein, the terms "including" and "comprising" are used in an open-ended fashion, and thus should be interpreted to mean "including, but not limited to."

[0028] Referring to Figure 1 , the adjustable power supply voltage time circuit is applied to an electronic device. The electronic device includes a first power consuming module 12, a second power consuming module 12, and two adjustable power supply voltage time circuits. The power supply voltage time parameters provided by the power supply modules 11 required by the two power consuming modules 12 are different. The two adjustable power supply voltage time circuits are connected to the two power consuming modules 12. The first resistance value of one of the adjustable power supply voltage time circuits is different from the first resistance value of the other adjustable power supply voltage time circuit, or the first capacitance value of one of the adjustable power supply voltage time circuits is different from the first capacitance value of the other adjustable power supply voltage time circuit. In this way, the electronic device can further have more combinations of power consuming modules 12 and adjustable power supply voltage time circuits. During the development and design of the internal circuit structure of the electronic device, when the power supply voltage time parameters required by various power consuming modules 12 such as liquid crystal panels (LCD panels), universal serial buses (USBs), central processing units (CPUs), etc. are different, the same adjustable power supply voltage time circuit described above can be applied to these power consuming modules 12. By adjusting the resistance value of the variable resistance group 22 and / or the capacitance value of the variable capacitance group 23, the power supply voltage time parameter can be matched with each power consuming module 12, thereby avoiding the process of frequently replacing fixed value capacitors and resistors, and improving the efficiency of developing and designing the electronic device.

[0029] In particular, the adjustable power supply voltage time circuit includes a power management module 2 and a voltage time management module 3. The power management module 2 includes a voltage output end 20 coupled to a voltage input end of a power consuming module 12 and grounded through a variable RC group. The variable RC group includes a variable resistance group 22 and a variable capacitance group 23 connected in series. The voltage time management module 3 includes a processing unit 30 and a parameter setting unit 31, a measurement unit 32, and an adjustment unit 33 coupled to the processing unit 30, respectively. The measurement unit 32 is connected to the variable RC group, and the adjustment unit 33 is connected to the adjustment end of the variable resistance group 22 and the adjustment end of the variable capacitance group 23.Figure 2 As shown, the parameter setting unit 31 is operated to input a target time parameter matching the power module 12; the measurement unit 32 acquires the initial resistance value of the variable resistor group 22 and the initial capacitance value of the variable capacitor group 23; the processing unit 30 determines whether the initial resistance value and the initial capacitance value match the target time parameter, and if they do not match, obtains a first resistance value and a first capacitance value based on the target time parameter; the adjustment unit 33 adjusts the variable resistor group 22 based on the first resistance value and adjusts the variable capacitor group 23 based on the first capacitance value. In some embodiments, the circuit for the adjustable power boost time is a printed circuit board (PCB) with multiple electronic components soldered on it, and the processing unit 30 is, for example, an integrated circuit (IC) chip soldered on the PCB; in other embodiments, the circuit for the adjustable power boost time is the entire integrated circuit chip, and the processing unit 30 is a portion of the integrated circuit chip; however, practical applications are not limited to these.

[0030] It should be noted that the aforementioned time parameter typically refers to the duration of the signal voltage rise / fall for the control power module 12, and can also be defined as the time constant (τ) of a resistor-capacitor (RC) circuit, representing the time required for the capacitor voltage to reach 63.2% of its final value. The time constant is described by the following formula:

[0031] τ=R*C

[0032] Where R represents the resistance in the circuit, in ohms (Ω); and C represents the capacitance, in farads (F). As the signal voltage rises, the voltage across the capacitor increases exponentially with time. Assuming the initial voltage across the capacitor is 0, the relationship between the voltage Vt across the capacitor and the current time t can be described by the following formula:

[0033]

[0034] Where Vu represents the voltage value of the capacitor after it is fully charged, and Vt represents the voltage value of the capacitor at the current time t. As the signal voltage decreases, the voltage across the capacitor decreases exponentially with time. Assuming the capacitor begins to discharge after being fully charged, the relationship between the voltage Vt across the capacitor and the current time t can be described by the following formula:

[0035]

[0036] That is, in order to achieve a specific signal voltage rising / falling duration, the time constant τ can be set by adjusting the resistance R and the capacitance C values, so as to control the duration required for the signal voltage to rise / falling to a specific percentage. In practical applications, if it is necessary to reduce the signal voltage rising / falling duration, a smaller resistance value or a smaller capacitance value can be selected; conversely, if it is necessary to increase the signal voltage rising / falling duration, a larger resistance value or a larger capacitance value can be selected. However, the change of the resistance value may affect the power consumption of the circuit, and the change of the capacitance value may affect the filtering performance of the circuit, so the specific resistance value and capacitance value need to be designed by the technician according to the specifications of the electronic device, and the utility model is not limited thereto.

[0037] It should be noted that the resistance value and the capacitance value matched to one power module 12 can usually be adjusted within a suitable range, that is, the above-mentioned target time parameter can be a range, so that more combinations of resistance values and capacitance values can be selected to match the target time parameter, that is, the adjustable resistance group 22 and the adjustable capacitance group 23 have higher freedom in the design of the adjustable range, in other words, the adjustable power supply voltage rising time circuit can also be used to match more specifications of the power module 12, and has higher universality. And the input of the target time parameter can be that the technician directly inputs the range of the time parameter into the parameter setting unit 31, or the technician inputs a point value of the time parameter into the parameter setting unit 31, the point value can be a midpoint value or an endpoint value in the range of the corresponding time parameter, and then the processing unit 30 is analyzed to obtain the range of the time parameter, and the utility model is not limited thereto.

[0038] In a preferred embodiment, the second power module 12 is a replaceable power module 12, that is, the second power module 12 can be disassembled and upgraded to a third power module 12. For example, the electronic device is a display, and the original liquid crystal panel in the display can be replaced by a liquid crystal panel with higher resolution and refresh rate. Among them, the type of the third power module 12 is the same as that of the second power module 12, and the time parameter of the power supply voltage required by the third power module 12 is different from that of the second power module 12. That is, in the case of replacing the second power module 12 with the third power module 12, the adjustable power supply voltage rising time circuit adjusts the adjustable resistance group 22 and the adjustable capacitance group 23 according to the time parameter of the power supply voltage required by the third power module 12. In this way, the electronic device equipped with the adjustable power supply voltage rising time circuit has more operation space for hardware upgrade, and the user can replace and upgrade a certain power module 12 without replacing the circuit board, further improving the service life of the electronic device and the user's experience.

[0039] In a preferred embodiment, the boost time management module 3 further comprises a storage unit 34 coupled to the parameter setting unit 31, and the storage unit 34 stores a firmware (FW) containing the target time parameter. It is to be noted that the storage unit 34 for storing the firmware can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or the like, but the actual application is not limited thereto. The firmware is a programming instruction for controlling and managing the parameter setting unit 31, and the target time parameter is inputted by the firmware.

[0040] In the process of adjusting the variable resistance group 22 and the variable capacitance group 23 by the adjusting unit 33 (i.e. step S50 in the flowchart of FIG. 5), in a preferred embodiment of the present application, the capacitance value of the variable capacitance group 23 is a fixed value, as shown in FIG. 6, the processing unit 30 acquires the current capacitance value of the variable capacitance group 23, and then calculates the first resistance value according to the target time parameter, and the adjusting unit 33 adjusts the variable resistance group 22 according to the first resistance value, that is, in this embodiment, the first capacitance value is equal to the initial capacitance value of the variable capacitance group 23. Figure 2 Figure 3 In a preferred embodiment of the present application, the capacitance value of the variable capacitance group 23 is a fixed value, as shown in FIG. 6, the processing unit 30 acquires the current capacitance value of the variable capacitance group 23, and then calculates the first resistance value according to the target time parameter, and the adjusting unit 33 adjusts the variable resistance group 22 according to the first resistance value, that is, in this embodiment, the first capacitance value is equal to the initial capacitance value of the variable capacitance group 23. Figure 4 In a preferred embodiment of the present application, the capacitance value of the variable capacitance group 23 is a fixed value, as shown in FIG. 6, the processing unit 30 acquires the current capacitance value of the variable capacitance group 23, and then calculates the first resistance value according to the target time parameter, and the adjusting unit 33 adjusts the variable resistance group 22 according to the first resistance value, that is, in this embodiment, the first capacitance value is equal to the initial capacitance value of the variable capacitance group 23. Figure 5 In a preferred embodiment of the present application, the capacitance value of the variable capacitance group 23 is a fixed value, as shown in FIG. 6, the processing unit 30 acquires the current capacitance value of the variable capacitance group 23, and then calculates the first resistance value according to the target time parameter, and the adjusting unit 33 adjusts the variable resistance group 22 according to the first resistance value, that is, in this embodiment, the first capacitance value is equal to the initial capacitance value of the variable capacitance group 23.

[0041] ​In a preferred embodiment, the variable resistance group 22 comprises a plurality of series-connected resistors, and a plurality of digital single-pole multi-throw switches connected in series with the plurality of series-connected resistors, wherein the resistance values of the plurality of series-connected resistors can be identical or different, and the utility model is not limited thereto. The adjusting unit 33 is configured to control the plurality of digital single-pole multi-throw switches to adjust the resistance value of the variable resistance group 22. In a preferred embodiment, the variable capacitance group 23 comprises a plurality of parallel-connected capacitors, and a plurality of digital switches connected in series with each of the plurality of parallel-connected capacitors, and the adjusting unit 33 is configured to control the plurality of digital switches to adjust the capacitance value of the variable capacitance group 23. Wherein the capacitance values of the plurality of parallel-connected capacitors can be identical or different, and the utility model is not limited thereto.

[0042] In a preferred embodiment, the power management module 2 further comprises a normally closed switch 21, as shown in the figure, the normally closed switch 21 is connected in series between the voltage output end 20 and the variable RC group. The processing unit 30 of the boost time management module 3 is coupled to the control end of the normally closed switch 21, when the initial resistance value and the initial capacitance value do not match the target time parameter, the processing unit 30 controls the normally closed switch 21 to be open to adjust the variable resistance group 22 and the variable capacitance group 23, and controls the normally closed switch 21 to be closed after adjustment. Figure 1 In some preferred embodiments, the measuring unit 32 is connected between the variable resistance group 22 and the variable capacitance group 23; in other preferred embodiments, the measuring unit 32 is connected between the voltage output end 20 and the variable resistance group 22, in other words, the measuring unit 32 is located before the variable resistance group 22; in still other preferred embodiments, the measuring unit 32 is connected between the variable capacitance group 23 and the ground end of the variable RC group; however, the actual application is not limited thereto.

[0043] In a preferred embodiment, the adjusting unit 33 and the variable resistance group 22 are electrically coupled through an SPI interface, an I2C interface or other commonly used interfaces; and / or, the adjusting unit 33 and the variable capacitance group 23 are electrically coupled through an SPI interface, an I2C interface or other commonly used interfaces; however, the actual application is not limited thereto. Preferably, the processing unit 30, the adjusting unit 33, the variable resistance group 22 and the variable capacitance group 23 can further be connected with a digital-to-analog converter (DAC) or an analog-to-digital converter (ADC), so that the resistance value of the variable resistance group 22 and the capacitance value of the variable capacitance group 23 can be adjusted by the digital signal generated by the processing unit 30, which can be designed by the skilled person according to the actual situation, and will not be described in detail.

[0044]

[0045] ​In summary, the embodiment of the utility model provides a kind of adjustable power supply boost time circuit and electronic equipment, and the adjustable power supply boost time circuit includes power management module and boost time management module.The power management module includes voltage output end, the voltage output end is coupled to the voltage input end of a power module, and is grounded by a variable RC group. Among them, the variable RC group includes series variable resistance group and variable capacitor group. Boost time management module includes processing unit and respectively coupled to the parameter setting unit of the processing unit, measuring unit and adjusting unit, the measuring unit is connected to the variable RC group, the adjusting unit is connected to the adjusting end of the variable resistance group and the adjusting end of the variable capacitor group. Among them, the parameter setting unit is used to be operated to input matching the target time parameter of the power module;The measuring unit obtains the initial resistance value of the variable resistance group and the initial capacitance value of the variable capacitor group;The processing unit judges whether the initial resistance value and the initial capacitance value match the target time parameter, and obtains first resistance value and first capacitance value according to the target time parameter when not matching;The adjusting unit adjusts the variable resistance group according to the first resistance value, and adjusts the variable capacitor group according to the first capacitance value.

[0046] The utility model has been described by the above related embodiment, however the above embodiment is only the example of implementation of the utility model. It must be pointed out that the disclosed embodiment does not limit the scope of the utility model. On the contrary, the change and the decoration made within the spirit and scope of the utility model are all the patent protection scope of the utility model.

Claims

1. A circuit for adjusting the boost time of a power supply, characterized by, The power management module comprises a voltage output end coupled to a voltage input end of a power consuming module and grounded through a variable RC group; the variable RC group comprises a variable resistance group and a variable capacitance group connected in series; and The boost time management module comprises a processing unit, a parameter setting unit, a measurement unit and an adjusting unit connected to the processing unit; the measurement unit is connected to the variable RC group; the adjusting unit is connected to an adjusting end of the variable resistance group and an adjusting end of the variable capacitance group; the parameter setting unit is used to input a target time parameter matching the power consuming module; the measurement unit obtains an initial resistance value of the variable resistance group and an initial capacitance value of the variable capacitance group; the processing unit judges whether the initial resistance value and the initial capacitance value match the target time parameter, and obtains a first resistance value and a first capacitance value according to the target time parameter when they do not match; the adjusting unit adjusts the variable resistance group according to the first resistance value and adjusts the variable capacitance group according to the first capacitance value. The boost time management module further comprises a storage unit coupled to the parameter setting unit, and the storage unit stores a firmware; the firmware contains the target time parameter.

2. The circuit for adjusting the boost time of a power supply of claim 1, wherein, The capacitance value of the variable capacitance group is a fixed value.

3. The circuit for adjusting the boost time of a power supply of claim 1, wherein, Alternatively, the resistance value of the variable resistance group is a fixed value. The boost time management module further comprises a storage unit storing a corresponding relationship between time parameters and resistance values and capacitance values; the processing unit obtains corresponding resistance values and capacitance values as the first resistance value and the first capacitance value according to the target time parameter and the corresponding relationship.

4. The circuit for adjusting the boost time of a power supply of claim 1, wherein, The variable resistance group comprises a plurality of resistors connected in series and a digital single-pole multi-throw switch connected in series with the plurality of resistors; the adjusting unit controls the digital single-pole multi-throw switch to adjust the variable resistance group.

5. The circuit for adjusting the boost time of a power supply of claim 1, wherein, The variable capacitance group comprises a plurality of capacitors connected in parallel and a plurality of digital switches connected in series with each capacitor; the adjusting unit controls the on-off of the plurality of digital switches to adjust the variable capacitance group.

6. The circuit for adjusting the boost time of a power supply of claim 1, wherein, The power management module further comprises a normally closed switch connected in series between the voltage output end and the variable RC group; the processing unit of the boost time management module is coupled to a control end of the normally closed switch; when the initial resistance value and the initial capacitance value do not match the target time parameter, the processing unit controls the normally closed switch to be open to adjust the variable resistance group and the variable capacitance group, and controls the normally closed switch to be closed after the adjustment.

7. The circuit for adjusting the boost time of a power supply of claim 1, wherein, The measurement unit is connected between the variable resistance group and the variable capacitance group.

8. The circuit for adjusting the boost time of a power supply of claim 1, wherein, The first and second power consuming modules have different time parameters of required power supply voltage; 9. An electronic device, comprising: And The two adjustable power boost time circuits of claim 1 to 8 are connected to the two power consuming modules respectively; the first resistance value of one adjustable power boost time circuit is different from the first resistance value of the other adjustable power boost time circuit, or the first capacitance value of one adjustable power boost time circuit is different from the first capacitance value of the other adjustable power boost time circuit. ​ ​ 10. The electronic device of claim 9, wherein, In case the second power consuming module is replaced by a third power consuming module, the circuit for adjusting the boost time of the power supply adjusts the variable resistor set and the variable capacitor set according to the time parameter of the power supply voltage required by the third power consuming module.

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