CN110739849A - power supply circuits and electronic equipment - Google Patents

power supply circuits and electronic equipment Download PDF

Info

Publication number
CN110739849A
CN110739849A CN201910988616.7A CN201910988616A CN110739849A CN 110739849 A CN110739849 A CN 110739849A CN 201910988616 A CN201910988616 A CN 201910988616A CN 110739849 A CN110739849 A CN 110739849A
Authority
CN
China
Prior art keywords
power supply
voltage
power
capacitor
processing module
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910988616.7A
Other languages
Chinese (zh)
Inventor
董兆龙
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hefei Lianbao Information Technology Co Ltd
Original Assignee
Hefei Lianbao Information Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hefei Lianbao Information Technology Co Ltd filed Critical Hefei Lianbao Information Technology Co Ltd
Priority to CN201910988616.7A priority Critical patent/CN110739849A/en
Publication of CN110739849A publication Critical patent/CN110739849A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
    • H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/14—Arrangements for reducing ripples from dc input or output
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/32—Means for protecting converters other than automatic disconnection

Abstract

The application discloses power supply circuits and electronic equipment, wherein each power supply circuit comprises a power input end used for inputting th current to supply power to the power supply circuit, a th processing module connected with the power input end and used for th processing of the th current to form power supply power, wherein the th processing comprises voltage transformation processing and/or current transformation processing, and a second processing module connected with an output end of the th processing module and used for receiving the power supply power, eliminating overvoltage pulses in the power supply power and recycling energy of the overvoltage pulses so that the processed power supply power meets a preset standard when the power supply circuit supplies power to target equipment.

Description

power supply circuits and electronic equipment
Technical Field
The present application relates to the field of circuit design of electronic devices, and in particular, to power supply circuits and electronic devices.
Background
However, with the increasing step of chip performance, the chip process technology is continuously improved, the chip required voltage is lower and the chip required current is higher and higher, but at present, the computer equipment, the intelligent equipment and the handheld equipment are smaller and thinner, the space left for the power supply circuit is smaller and thinner, the large current and the small volume are contradictory, especially for the output capacitor, the large current needs a large amount of capacitors to bear the energy, otherwise the impact on the load is great, especially for the overvoltage (overvoltage pulse) requiring the capacitors with high quantity, capacity and quality, the existing output capacitors mostly use the MLCC (ceramic capacitor), the capacity is generally smaller, the number of MLCCs is required to be larger (the cost is increased), even then, the effect of eliminating the overvoltage pulse is not ideal, and the production cost is high and low.
Disclosure of Invention
An object of the embodiments of the present application is to provide power supply circuits and electronic devices, in which the power supply circuits can avoid the influence of overload pulses in power supply power on the circuits, and can recycle excess energy in the power supply circuits, and the power supply circuits can effectively reduce production costs.
In order to solve the technical problem, the embodiment of the application adopts the following technical scheme that the power supply circuits comprise:
a power input for inputting an th current to power the power supply circuit;
an processing module connected to the power input end for processing the th current into th processed current to form power supply, wherein the th processing includes voltage transformation processing and/or current transformation processing;
and the second processing module is connected with the output end of the th processing module and is used for receiving the power supply power, eliminating overvoltage pulses in the power supply power and recycling the energy of the overvoltage pulses, so that the processed power supply power meets a preset standard when being supplied to target equipment.
Preferably, the second processing module includes:
the absorption submodule is connected with the output end of the processing module and is used for absorbing overvoltage pulses in the power supply power and converting the energy of the overvoltage pulses into second current when the voltage of the power supply power exceeds a preset value;
the multiplexing submodule is respectively connected with the absorption submodule and the power input end, and is used for receiving the second current, forming a bootstrap voltage based on the second current, and supplying the power with the bootstrap voltage to the power input end.
Preferably, the absorption submodule comprises:
a comparator, the th end of which is connected with the output end of the processing module, and the signal output end of which sends out a control signal when the voltage at the th end exceeds the th preset value, wherein the th preset value is associated with the voltage at the second end of the comparator;
an th switch connected to the signal output of the comparator and the output of the th processing module, respectively, and performing an opening operation upon receiving the control signal, so that an overvoltage pulse in the supply power is discharged to the absorption submodule;
an th capacitor, wherein the th capacitor is connected to the th switch and the multiplexing submodule, respectively, for storing energy of the overvoltage pulse in the supply power and converting the energy into the second current.
Preferably, the voltage at the second end of the comparator is a superposition of a preset voltage difference and a mean voltage, wherein the mean voltage is formed through a filtering operation based on the voltage at the th end of the comparator, and can be changed correspondingly with the change of the voltage at the th end of the comparator.
Preferably, the multiplexing submodule comprises an th multiplexing sub-circuit and a second multiplexing sub-circuit which are connected with each other;
the th multiplexing sub-circuit comprises a th diode and a second capacitor which are connected with each other, the th diode is connected with the absorption sub-module, and the th diode receives the second current and charges the second capacitor, so that the voltage of the anode of the second capacitor is increased;
the second multiplexing sub-circuit comprises a second diode and a third capacitor which are connected with each other, the input end of the second diode is connected with the anode of the second capacitor, and the second diode charges the third capacitor based on the power generated by the second capacitor so as to form the bootstrap voltage.
Preferably, a cathode of the second capacitor has a preset voltage, and when the th diode charges the second capacitor, a voltage of an anode of the second capacitor is a superposition of a voltage of the second current and the preset voltage.
Preferably, the th processing module includes a second switching unit and a third switching unit connected to each other,
the th side of the second switch unit is connected with the power input end, the second side of the second switch unit is connected with the th side of the third switch unit, the second side of the third switch unit is grounded, when the second switch unit detects that the voltage corresponding to the th current exceeds a second preset value, the connection with the power input end is disconnected, and the third switch unit is conducted to ground the th processing module so as to discharge redundant energy in the th processing module.
Preferably, the th processing module further includes an inductor and a capacitor bank, wherein a side of the inductor is connected between the second switching unit and the third switching unit, and another side of the inductor is connected to the capacitor bank and the output terminal of the th processing module, respectively, to perform a filtering operation on the th current.
Preferably, the output of the th processing module is a power output of the power supply circuit, and the power output supplies power to the target device.
The embodiment of the application also provides kinds of electronic devices, which include the power supply circuit, where the power supply circuit supplies power to a target device in the electronic device, and the target device includes multiple types of chips.
The beneficial effects of the embodiment of the application are that: the power supply circuit can eliminate overload pulses in power supply power so as to avoid influencing the circuit and target equipment, can recycle redundant energy in the power supply circuit, and can effectively reduce production cost.
Drawings
Fig. 1 is a schematic structural diagram of a power supply circuit according to an embodiment of the present application;
fig. 2 is a connection structure diagram of specific embodiments of the power supply circuit according to the embodiment of the present application;
FIG. 3 is a block diagram of a comparator according to an embodiment of the present application;
fig. 4 is a structural diagram of a multiplexing submodule according to an embodiment of the present application;
fig. 5 is a logic diagram of embodiments of a power supply circuit of an embodiment of the present application.
Detailed Description
Various aspects and features of the present application are described herein with reference to the drawings.
It will be understood that various modifications may be made to the embodiments of the present application. Accordingly, the foregoing description should not be construed as limiting, but merely as exemplifications of embodiments. Those skilled in the art will envision other modifications within the scope and spirit of the application.
The accompanying drawings, which are incorporated in and constitute a part of this specification , illustrate embodiments of the application and, together with a general description of the application given above and the detailed description of the embodiments given below, serve to explain the principles of the application.
These and other characteristics of the present application will become apparent from the following description of preferred forms of embodiment, given as non-limiting examples, with reference to the attached drawings.
It should also be understood that, although the present application has been described with reference to specific examples, a person of skill in the art shall certainly be able to achieve many other equivalent forms of the application, having the characteristics as set forth in the claims and hence all coming within the field of protection defined thereby.
The above and other aspects, features and advantages of the present application will become more apparent in view of the following detailed description when taken in conjunction with the accompanying drawings.
Specific embodiments of the present application are described hereinafter with reference to the accompanying drawings; however, it is to be understood that the disclosed embodiments are merely exemplary of the application, which can be embodied in various forms. Well-known and/or repeated functions and constructions are not described in detail to avoid obscuring the application of unnecessary or unnecessary detail. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present application in virtually any appropriately detailed structure.
The specification may use the phrases "in embodiments," "in another embodiments," "in yet embodiments," or "in other embodiments," which may all refer to or more of the same or different embodiments in accordance with the present application.
kinds of power supply circuits of this application embodiment, this power supply circuit can carry out safe power supply for target equipment such as the chip of electronic equipment, for example for computer processor, chipset, memory module etc. carry out safe power supply, as shown in fig. 1, this power supply circuit includes:
the power supply circuit is powered by other power supply equipment, and the other power supply equipment can be connected to the power input end, so that the power input end can input the th current to the power supply circuit, the th current cannot be directly applied to target equipment, and the conversion of the power supply circuit is needed.
Specifically, the processing module can perform 5639 processing on current so as to enable the current to be applicable to a target device, such as performing transformation processing (including voltage reduction processing, voltage boost processing and the like) or performing transformation processing (such as current increase processing, current reduction processing and the like) so as to enable the processed power supply to be adapted to the target device, such as reducing the voltage of the output power supply by reducing the duty ratio of the input voltage.
The second processing module is connected with the output end of the processing module and used for receiving the power supply power, eliminating the overvoltage pulse in the power supply power and recycling the energy of the overvoltage pulse, so that the processed power supply power meets the preset standard when the power supply to the target equipment is carried out, particularly, the output end of the processing module can be used as the output end of the power supply circuit to supply power to the target equipment, the processing is carried out by the current to form the overvoltage pulse in the power supply power, the second processing module can absorb and recycle the overvoltage pulse in the power supply power after receiving the power supply power, for example, the overvoltage pulse in the power supply power is detected by detecting the voltage or the current and can be immediately led out and stored, and if the overvoltage pulse is not detected in a certain time period, the current situation can be kept and continuously monitored, the power supply power for eliminating the overvoltage pulse is extremely smooth, so that the preset standard is met, the preset standard can be set according to the actual use situation, the preset standard can be modified if the type or model of the target equipment is changed, the second power supply power can be correspondingly modified, and the overvoltage pulse can be recovered, the energy can be recovered, and the power supply power can be recycled, and the energy can be recovered, so that the overvoltage pulse is recovered.
The power supply circuit of the embodiment of the application can eliminate overload pulses in power supply power so as to avoid influencing the circuit and target equipment, can recycle redundant energy in the power supply circuit, and can effectively reduce production cost.
In embodiments of the present application, the second processing module comprises:
the absorption submodule can be composed of or a plurality of elements, is connected with the output end of the processing module so as to be capable of detecting the power parameter of the output end of the processing module (capable of outputting the power supply), can start the operation of absorbing the overvoltage pulse in the power supply when detecting that the voltage of the power supply exceeds the th preset value, and can not start the operation when detecting that the voltage of the power supply does not exceed the th preset value, so that the power supply can be directly used for supplying power to a target device.
And the multiplexing submodule is respectively connected with the absorption submodule and the power input end (the voltage of the multiplexing submodule is VIN), is used for receiving the second current, forming a bootstrap voltage based on the second current, and supplies the power with the bootstrap voltage to the power input end. The bootstrap circuit is also called a boost circuit, and can superpose the discharge voltage of the capacitor and the power supply voltage by using electronic elements such as a bootstrap boost diode, a bootstrap boost capacitor and the like, so that the voltage is boosted, and the boosted voltage can reach multiple times of the original voltage. The multiplexing submodule can boost the second current after receiving the second current (for example, in the above manner), so that a bootstrap voltage is formed, the parameter characteristic of the bootstrap voltage can be specifically set according to the actual condition, the recovered power can be retransmitted to the power input end, the power supply capacity of the power input end is increased, and the waste is avoided. If the bootstrap voltage is not formed, the multiplexing submodule cannot deliver the recycled power to the power input if the voltage is too low.
In embodiments of the present application, as shown in FIG. 2 in combination with FIGS. 3, 4 and 5, the absorption submodule comprises:
a comparator, wherein the th terminal of the comparator is connected with the output terminal of the processing module, when the voltage at the th terminal exceeds the th preset value, the signal output terminal of the comparator sends out a control signal, wherein the th preset value is associated with the voltage at the second terminal of the comparator, the comparator has th terminal and the second terminal for comparing parameters, and also has a signal output terminal for sending out a control signal, when the parameters at the th terminal and the second terminal are compared according to the preset regulation, the control signal can be generated according to the comparison result, as exemplified by referring to fig. 3, the positive terminal ( th terminal) of the comparator U1 is connected with the output terminal of the processing module, and the measured voltage is V0If the voltage rises and exceeds the th preset value (voltage of negative pole) V0+ Vth, the signal output terminal of the comparator U1 may output a switch-on control signal OV to the th switch Q3.
With reference to fig. 3 and in combination with the above example, after the th switch Q3 receives a control signal OV (e.g., high level) for turning on the switch, the th switch Q3 is turned on, and since the th switch Q3 is connected to the output of the th processing module, the overvoltage pulse at the output of the th processing module passes through the th switch Q3, and is thus discharged from the th processing module to the absorption submodule, so that there is no overvoltage pulse in the power supply and thus no influence on the target device, and when the voltage at the output of the th processing module no longer exceeds the preset value of due to the leakage of the overvoltage pulse, the signal output of the comparator U1 sends a control signal for turning off the switch Q3 of the th switch Q3, and when the voltage at the output of the th processing module no longer exceeds the preset value of due to the leakage of the overvoltage pulse, the voltage at the output of the 4642 th processing module drops to the of the 4642 th processing module, so that the drops.
th capacitor, th capacitorThe capacitor is connected with the th switch and the multiplexing submodule respectively and is used for storing energy of overvoltage pulse in the power supply and converting the energy into second current, in connection with the above example, the th capacitor CSCan receive and store the energy of the overvoltage pulse discharged through the th switch Q3, and can convert the stored energy into a second current (having a voltage V)S) So that the second current flows into the multiplexing sub-module (charge pump).
In this embodiment, only a small amount of capacitance is required after the output of the th switch Q3 (e.g., only the th capacitor C is required)S) For example, when the output voltage is 1.2V and the output capacitance is 10 × 22uf, when the overvoltage pulse is 100mV, the extra energy Q ═ Δ V ═ C ═ 0.1V ═ 220uf ═ 22uC is known, and if the overvoltage pulse is reduced to 50mV, the capacity of the output capacitance needs to be increased to C ═ 22uC/50mV ═ 440uf, which is equivalent to doubling the capacity, and the output capacitance needs to be increased from 10 to 20.
, since the CS is completely empty, when the Q3 is turned on, the voltage on the CS rises from 0V, assuming it is equal to V01.2V, then for the th capacitor Cs, the charge Q ═ Cs Δ V ═ Cs 1.2V is charged, and to reduce the overvoltage pulse to 50mv, only half Q ═ 22/2uC ═ 11uC is absorbed, and the charge is absorbed by the th capacitor Cs, and only Cs ═ Q/1.2V ═ 11uC/1.2V ═ 10uf is needed to absorb completely.
In the embodiments of the present application, the voltage at the second terminal of the comparator is a superposition of a preset voltage difference and a mean voltage, wherein the mean voltage is formed by filtering operation based on the voltage at the terminal of the comparator, and can be changed correspondingly with the voltage at the terminal of the comparatorThe average voltage is formed by filtering the voltage at the th end of the comparator, which may be the average voltage at the th end, the average voltage increases when the voltage at the th end increases, and the average voltage decreases when the voltage at the th end decreases, as shown in FIG. 3 and described in conjunction with the above example, the preset voltage difference is offset, and the average voltage is V0aIn which V is0aIs the voltage V at the th end of the comparator0And the mean voltage V of0aIs the voltage V at the th end of the comparator0Formed through a filtering operation. The voltage of the second end of the comparator is V0aSuperposition with offset, when V0Suddenly rises and the value after rising exceeds V0aAnd offset, the signal output of the comparator U1 issues a control signal that closes the switch Q3.
In embodiments of the present application, the multiplexing sub-module includes a th multiplexing sub-circuit and a second multiplexing sub-circuit connected to each other;
the th multiplexing sub-circuit comprises a th diode and a second capacitor which are connected with each other, the th diode is connected with the absorption sub-module, and the th diode receives a second current and charges the second capacitor, so that the voltage of the anode of the second capacitor is increased;
the second multiplexing sub-circuit comprises a second diode and a third capacitor which are connected with each other, the input end of the second diode is connected with the anode of the second capacitor, and the second diode charges the third capacitor based on the power generated by the second capacitor so as to form a bootstrap voltage.
Specifically, referring to fig. 4, the th diode receives the second current and charges the second capacitor, and if the cathode of the second capacitor originally has a voltage, the th diode charges the second capacitor to increase the voltage formed by the second capacitor, including increasing the voltage of the anode of the second capacitor, and after the voltage of the anode of the second capacitor increases, the second diode charges the third capacitor, so that the third capacitor discharges and a bootstrap voltage is formed, which is increased compared with the voltage of the second current input to the multiplexing submoduleWhen the voltage of the cathode of the second capacitor C1 or the control end PWM is low level, the input voltage Vin (voltage Vs of the second current) at the input end of the multiplexing sub-module charges the second capacitor C1 through the th diode D1, the voltage at both ends of the second capacitor C1 is Vin, and then the cathode of the second capacitor C1 or the control end PWM is changed from low to high, at this time, the voltage at both ends of the second capacitor C1 is still Vin due to the fact that the capacitor voltage cannot change suddenly, but the voltage at the cathode is raised to Vpwm, so the voltage at the anode is Vin + Vpwm, and due to the voltage difference, the third capacitor C2 is charged, so that the voltage at both ends of the third capacitor C2 is Vin + Vpwm, that is the output voltage Vout at the output end of the multiplexing sub-module, so as to achieve the purpose of boosting, in this embodiment, the th capacitor C3SAs Vin, and also the control terminal PWM may use a common connection control terminal of the second switching unit (Q1) and the third switching unit (Q2) in the th processing module.
In the embodiments of the present application, the cathode of the second capacitor has a preset voltage, and when the th diode charges the second capacitor, the voltage of the anode of the second capacitor is the superposition of the voltage of the second current and the preset voltage, specifically, when the th diode charges the second capacitor, the voltage of the anode of the second capacitor is changed from the original Vpwm to Vin + Vpwm, where Vin is the input voltage of the multiplexing submodule (the voltage of the second current), and Vpwm is the preset voltage.
In embodiments of the present application, the processing module includes a second switch unit and a third switch unit connected to each other, wherein a side of the second switch unit is connected to the power input terminal, a second side of the second switch unit is connected to a side of the third switch unit, the second side of the third switch unit is grounded, the second switch unit is disconnected from the power input terminal when detecting that a voltage corresponding to a th current exceeds a second preset value, and the third switch unit is turned on to ground the processing module, so as to discharge excess energy in the processing module.
In the embodiment shown in fig. 2, the second switching unit is connected to the power input terminal to control the power flowing in from the power input terminal, the second switching unit and the third switching unit may be alternately turned on to form a square wave signal, and according to the duty ratio of the second switching unit corresponding to the step-down result of the th processing module, if the duty ratio of the second switching unit is 10%, the th processing module will make the voltage at the power input terminal 10% of the original voltage.
In embodiments of the present application, the processing module further includes an inductor and a capacitor bank, wherein a side of the inductor is connected between the second switching unit and the third switching unit, and another side of the inductor is connected to the capacitor bank and an output terminal of the processing module, respectively, to filter th current0Side is connected between Q1 and Q2, and the capacitor bank comprises at least capacitors, such as two capacitors C connected in parallel0Capacitor C0Is arranged at the ground line and the output end (with the voltage V) of the th processing module0) And a capacitance C0Positive electrode and inductor L0Connection, capacitance C0And an inductance L0The th current through the th processing module can be filtered to stabilize the power at the output of the th processing module.
In embodiments of the present application, the output of the th processing module is the power output of the power supply circuit that powers the target device0) The voltage at the output terminal has been eliminatedThe voltage pulse is pressed and the filtering operation is performed, so that the power output end can meet the preset standard when the target equipment such as a chip is powered.
The embodiment of the present application further provides electronic devices, which include the power supply circuit as described above, where the power supply circuit supplies power to a target device in the electronic device, and the target device includes multiple types of chips.
The above embodiments are only exemplary embodiments of the present application, and are not intended to limit the present application, and the protection scope of the present application is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present application and such modifications and equivalents should also be considered to be within the scope of the present application.

Claims (10)

  1. A power supply circuit of , comprising:
    a power input for inputting an th current to power the power supply circuit;
    an processing module connected to the power input end for processing the th current into th processed current to form power supply, wherein the th processing includes voltage transformation processing and/or current transformation processing;
    and the second processing module is connected with the output end of the th processing module and is used for receiving the power supply power, eliminating overvoltage pulses in the power supply power and recycling the energy of the overvoltage pulses, so that the processed power supply power meets a preset standard when being supplied to target equipment.
  2. 2. The power supply circuit of claim 1, wherein the second processing module comprises:
    the absorption submodule is connected with the output end of the processing module and is used for absorbing overvoltage pulses in the power supply power and converting the energy of the overvoltage pulses into second current when the voltage of the power supply power exceeds a preset value;
    the multiplexing submodule is respectively connected with the absorption submodule and the power input end, and is used for receiving the second current, forming a bootstrap voltage based on the second current, and supplying the power with the bootstrap voltage to the power input end.
  3. 3. The power supply circuit of claim 2, wherein the absorption submodule comprises:
    a comparator, the th end of which is connected with the output end of the processing module, and the signal output end of which sends out a control signal when the voltage at the th end exceeds the th preset value, wherein the th preset value is associated with the voltage at the second end of the comparator;
    an th switch connected to the signal output of the comparator and the output of the th processing module, respectively, and performing an opening operation upon receiving the control signal, so that an overvoltage pulse in the supply power is discharged to the absorption submodule;
    an th capacitor, wherein the th capacitor is connected to the th switch and the multiplexing submodule, respectively, for storing energy of the overvoltage pulse in the supply power and converting the energy into the second current.
  4. 4. The power supply circuit of claim 3, wherein the voltage at the second terminal of the comparator is a superposition of a preset voltage difference and a mean voltage, wherein the mean voltage is formed by filtering the voltage at the th terminal of the comparator, and can be changed correspondingly with the voltage at the th terminal of the comparator.
  5. 5. The power supply circuit of claim 2 wherein the multiplexing sub-module comprises an th multiplexing sub-circuit and a second multiplexing sub-circuit connected to each other;
    the th multiplexing sub-circuit comprises a th diode and a second capacitor which are connected with each other, the th diode is connected with the absorption sub-module, and the th diode receives the second current and charges the second capacitor, so that the voltage of the anode of the second capacitor is increased;
    the second multiplexing sub-circuit comprises a second diode and a third capacitor which are connected with each other, the input end of the second diode is connected with the anode of the second capacitor, and the second diode charges the third capacitor based on the power generated by the second capacitor so as to form the bootstrap voltage.
  6. 6. The power supply circuit of claim 5, wherein a cathode of the second capacitor has a predetermined voltage, and when the th diode charges the second capacitor, a voltage of an anode of the second capacitor is a superposition of a voltage of the second current and the predetermined voltage.
  7. 7. The power supply circuit of claim 1, wherein the th processing module comprises a second switching unit and a third switching unit connected to each other,
    the th side of the second switch unit is connected with the power input end, the second side of the second switch unit is connected with the th side of the third switch unit, the second side of the third switch unit is grounded, when the second switch unit detects that the voltage corresponding to the th current exceeds a second preset value, the connection with the power input end is disconnected, and the third switch unit is conducted to ground the th processing module so as to discharge redundant energy in the th processing module.
  8. 8. The power supply circuit of claim 7, wherein the th processing module further comprises an inductor and a capacitor bank, wherein a side of the inductor is connected between the second switching unit and the third switching unit, and another side of the inductor is connected to the capacitor bank and an output terminal of the th processing module, respectively, to filter the th current.
  9. 9. The power supply circuit of claim 7 wherein the output of the th processing module is a power output of the power supply circuit, the power output providing power to the target device.
  10. 10, electronic device, comprising the power supply circuit of any of claims 1-9 through , the power supply circuit providing power to a target device of the electronic device, the target device comprising multiple types of chips.
CN201910988616.7A 2019-10-17 2019-10-17 power supply circuits and electronic equipment Pending CN110739849A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910988616.7A CN110739849A (en) 2019-10-17 2019-10-17 power supply circuits and electronic equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910988616.7A CN110739849A (en) 2019-10-17 2019-10-17 power supply circuits and electronic equipment

Publications (1)

Publication Number Publication Date
CN110739849A true CN110739849A (en) 2020-01-31

Family

ID=69268148

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910988616.7A Pending CN110739849A (en) 2019-10-17 2019-10-17 power supply circuits and electronic equipment

Country Status (1)

Country Link
CN (1) CN110739849A (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6154411A (en) * 1998-12-07 2000-11-28 Mitsubishi Denki Kabushiki Kaisha Boosting circuit compensating for voltage fluctuation due to operation of load
CN1601877A (en) * 2003-09-26 2005-03-30 华硕电脑股份有限公司 Active clamping circuit and power source supplying system
CN101345475A (en) * 2007-07-12 2009-01-14 恩益禧电子股份有限公司 Charge pump drive circuit
CN103384115A (en) * 2013-07-15 2013-11-06 深圳桑达国际电源科技有限公司 Charging and discharging type direct current (DC)-DC conversion circuit and new energy power generation system
CN104426143A (en) * 2013-08-30 2015-03-18 深圳市海洋王照明工程有限公司 Battery overvoltage absorbing circuit
CN109873561A (en) * 2019-04-15 2019-06-11 苏州浪潮智能科技有限公司 A kind of the energy utilization circuit and electronic equipment of overshoot voltage

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6154411A (en) * 1998-12-07 2000-11-28 Mitsubishi Denki Kabushiki Kaisha Boosting circuit compensating for voltage fluctuation due to operation of load
CN1601877A (en) * 2003-09-26 2005-03-30 华硕电脑股份有限公司 Active clamping circuit and power source supplying system
CN101345475A (en) * 2007-07-12 2009-01-14 恩益禧电子股份有限公司 Charge pump drive circuit
CN103384115A (en) * 2013-07-15 2013-11-06 深圳桑达国际电源科技有限公司 Charging and discharging type direct current (DC)-DC conversion circuit and new energy power generation system
CN104426143A (en) * 2013-08-30 2015-03-18 深圳市海洋王照明工程有限公司 Battery overvoltage absorbing circuit
CN109873561A (en) * 2019-04-15 2019-06-11 苏州浪潮智能科技有限公司 A kind of the energy utilization circuit and electronic equipment of overshoot voltage

Similar Documents

Publication Publication Date Title
US8736238B2 (en) Buck and buck/boost converter systems having auxiliary circuits and method thereof
JP5458739B2 (en) Electrostatic protection circuit, operation control method of electrostatic protection circuit, switching regulator using electrostatic protection circuit, and electrostatic protection method of switching regulator
CN113328616A (en) Valley filling circuit
CN108173423B (en) Diode discharge circuit for chassis power supply
US11101738B2 (en) Power converter and control method thereof and power supply system
US8144485B2 (en) Direct current voltage conversion circuit
EP2837078B1 (en) An electronic circuit with a current ripple filter
CN110739849A (en) power supply circuits and electronic equipment
CN109873561A (en) A kind of the energy utilization circuit and electronic equipment of overshoot voltage
CN116581984A (en) Control method, control device, control chip and switching power supply
CN113595393B (en) DC/DC module, power generation system, and DC/DC module protection method
CN209896901U (en) Circuit for stabilizing output voltage of switching circuit
CN108390557A (en) Improve the Switching Power Supply of underloading frequency
CN210041648U (en) Bidirectional DC/DC circuit for realizing multi-path output by adopting coupling inductor
CN209805675U (en) Logic voltage conversion circuit applied to T-CON board
CN109194117B (en) Multi-output power converter and control method thereof
WO2021028990A1 (en) Dc-dc converter
CN110165880A (en) A kind of circuit and method of stable switch circuit output voltage
CN1469535A (en) Distributed power supply system
JP2004254401A (en) Boosting chopper device
EP2151911A1 (en) DC/DC-converter
CN217824301U (en) Charging control circuit and energy storage equipment
CN218449865U (en) Circuit for supplying power to switching power supply control circuit based on auxiliary winding
CN217933181U (en) Energy storage device of storage equipment and storage equipment
CN215010053U (en) Single-inductor secondary Buck type DC-DC converter structure

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20200131