CN115566877A - MCU power management circuit - Google Patents

MCU power management circuit Download PDF

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Publication number
CN115566877A
CN115566877A CN202211301831.3A CN202211301831A CN115566877A CN 115566877 A CN115566877 A CN 115566877A CN 202211301831 A CN202211301831 A CN 202211301831A CN 115566877 A CN115566877 A CN 115566877A
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China
Prior art keywords
module
resistor
voltage
capacitor
control module
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Pending
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CN202211301831.3A
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Chinese (zh)
Inventor
吕向东
唐伟童
夏菁
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Hengshuo Semiconductor Hefei Co ltd
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Hengshuo Semiconductor Hefei Co ltd
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Priority to CN202211301831.3A priority Critical patent/CN115566877A/en
Publication of CN115566877A publication Critical patent/CN115566877A/en
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    • 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
    • H02M1/0003—Details of control, feedback or regulation circuits
    • H02M1/0032—Control circuits allowing low power mode operation, e.g. in standby mode
    • 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
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
    • H02M3/33515—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters with digital control

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)

Abstract

The invention discloses an MCU power management circuit, which relates to the technical field of power management and comprises a voltage stabilization control module, a voltage regulation module and a control module, wherein the voltage stabilization control module is used for rectifying and stabilizing voltage; the intelligent control module is used for receiving signals and controlling the module to work; the isolation driving module is used for isolating transmission signals and amplifying the signals; the standby control module is used for controlling the capacitor circuit to perform standby control through the switch circuit; the processing protection module is used for filtering and voltage spike absorption protection; the voltage regulating module is used for voltage-stabilizing regulation; the output processing module is used for outputting boosting rectification processing; and the output sampling module is used for sampling voltage. The MCU power management circuit adopts a flyback switching power supply circuit controlled by an intelligent control module, and is matched with an output processing module and an output sampling module to carry out output regulation and output feedback, so that intelligent power management control is realized, and meanwhile, the standby control module can realize intelligent low-power-consumption standby control on the power supply module under the condition of not pulling out a power supply.

Description

MCU power management circuit
Technical Field
The invention relates to the technical field of power management, in particular to an MCU power management circuit.
Background
Along with the development of electronic technology and information technology, for satisfying the power supply demand of consumer, its power management circuit is also constantly developing towards intelligent direction, current power management circuit adopts traditional simulation pulse width modulation chip to accomplish steady voltage's control and output for the flyback switching power supply circuit of core mostly, can only carry out simple steady voltage regulation control, use the upper limit lower, and when the consumer can't supply power, can't realize the standby control of low-power consumption, can only stop to provide the electric energy for the consumer through closing the power, it is comparatively troublesome, consequently, remain to improve.
Disclosure of Invention
An embodiment of the present invention provides an MCU power management circuit to solve the problems set forth in the above background art.
According to an embodiment of the present invention, an MCU power management circuit is provided, including: the device comprises a power supply module, a voltage stabilizing control module, a standby control module, a processing protection module, a voltage regulating module, an intelligent control module, an isolation driving module, an output processing module and an output sampling module;
the power module is used for providing alternating current electric energy for the circuit and carrying out voltage reduction treatment on the alternating current electric energy;
the voltage stabilization control module is connected with the power supply module and used for rectifying and stabilizing the electric energy output by the power supply module through a rectifying and voltage stabilizing circuit and transmitting the electric energy to the voltage regulation module and the intelligent control module;
the intelligent control module is connected with the voltage stabilizing control module, the voltage regulating module and the output sampling module, and is used for receiving the signals output by the voltage regulating module and the output sampling module, generating pulse signals and outputting standby control signals;
the isolation driving module is connected with the intelligent control module and is used for carrying out isolation transmission and amplification processing on the standby control signal through an isolation transmission circuit and a triode amplification circuit;
the standby control module is connected with the power supply module and the drive control module, is used for receiving the signal output by the isolation drive module, controls the capacitor circuit to work through the switch circuit, and is used for performing standby control on the power supply module through the capacitor circuit and controlling the transmission of electric energy;
the processing protection module is connected with the standby control module, and is used for filtering the electric energy output by the standby control module, transmitting the electric energy to the voltage regulation module and absorbing voltage spikes in a circuit;
the voltage regulating module is connected with the processing protection module and the voltage stabilizing control module, is used for improving the driving capability of the pulse signal through the driving circuit and driving the conduction degree of the power tube circuit, is used for sampling the working current of the power tube circuit and outputting a current signal, and is used for performing voltage stabilizing regulation on the input electric energy and outputting the electric energy;
the output processing module is connected with the voltage regulating module and is used for performing rectification filtering processing on the electric energy output by the voltage regulating module and outputting the electric energy;
the output sampling module is connected with the output processing module and used for sampling voltage of the electric energy output by the output processing module and transmitting the electric energy to the intelligent control module.
Compared with the prior art, the invention has the beneficial effects that: the MCU power management circuit disclosed by the invention forms a flyback switching power supply circuit through the intelligent control module and the voltage regulating module, and is matched with the output processing module and the output sampling module to carry out output regulation and output feedback, so that intelligent power management control is realized, meanwhile, the standby control module can realize intelligent low-power-consumption standby control on the power supply module under the condition of not pulling out a power supply, the intelligence of electric energy is improved, and the circuit has strong applicability and is simple.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
Fig. 1 is a schematic block diagram of an MCU power management circuit according to an embodiment of the present invention.
Fig. 2 is a circuit diagram of an MCU power management circuit according to an embodiment of the present invention.
Fig. 3 is a circuit diagram of a connection circuit of an isolated driving module and a standby control module according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
In embodiment 1, referring to fig. 1, an MCU power management circuit includes: the device comprises a power supply module 1, a voltage stabilizing control module 2, a standby control module 3, a processing protection module 4, a voltage regulating module 5, an intelligent control module 6, an isolation driving module 7, an output processing module 8 and an output sampling module 9;
specifically, the power module 1 is configured to provide ac power for a circuit and perform voltage reduction on the ac power;
the voltage stabilization control module 2 is connected with the power supply module 1 and used for rectifying and stabilizing the electric energy output by the power supply module 1 through a rectifying and voltage stabilizing circuit and transmitting the electric energy to the voltage regulation module 5 and the intelligent control module 6;
the intelligent control module 6 is connected with the voltage stabilization control module 2, the voltage regulation module 5 and the output sampling module 9, and is used for receiving the signals output by the voltage regulation module 5 and the output sampling module 9, generating a pulse signal and outputting a standby control signal;
the isolation driving module 7 is connected with the intelligent control module 6 and is used for carrying out isolation transmission and amplification processing on the standby control signal through an isolation transmission circuit and a triode amplification circuit;
the standby control module 3 is connected with the power module 1 and the drive control module, is used for receiving the signal output by the isolation drive module 7, controls the capacitor circuit to work through the switch circuit, and is used for performing standby control on the power module 1 through the capacitor circuit and controlling the transmission of electric energy;
the processing protection module 4 is connected with the standby control module 3, and is used for filtering the electric energy output by the standby control module 3, transmitting the electric energy to the voltage regulation module 5 and absorbing voltage spikes in a circuit;
the voltage regulating module 5 is connected with the processing protection module 4 and the voltage stabilizing control module 2, and is used for improving the driving capability of the pulse signal through a driving circuit, driving the conduction degree of the power tube circuit, sampling the working current of the power tube circuit and outputting a current signal, and is used for performing voltage stabilizing regulation on the input electric energy and outputting the electric energy;
the output processing module 8 is connected with the voltage regulating module 5 and is used for performing rectification filtering processing on the electric energy output by the voltage regulating module 5 and outputting the electric energy;
and the output sampling module 9 is connected with the output processing module 8 and used for sampling the voltage of the electric energy output by the output processing module 8 and transmitting the electric energy to the intelligent control module 6.
In a specific embodiment, the power module 1 may employ an ac power supply, which is not described in detail herein; the voltage stabilization control module 2 can adopt a rectification circuit and a voltage stabilization circuit to carry out rectification and voltage stabilization; the standby control module 3 can adopt a capacitor circuit, a switch circuit and a rectifier circuit, the capacitor circuit is triggered by the switch circuit to perform standby control, and the rectifier circuit converts alternating current into direct current; the processing protection module 4 can adopt a rectification filter circuit and an RCD absorption circuit, the rectification filter circuit carries out rectification filter processing, and the RCD absorption circuit absorbs peak voltage generated when the voltage regulation module 5 works; the voltage regulation module 5 can adopt a driving circuit, a power tube circuit, a voltage transformation circuit and a current sampling circuit, the driving circuit provides driving capability of an input signal so as to control a conduction angle of the power tube circuit, the conduction angle of the power tube circuit regulates the voltage regulation degree of the voltage transformation circuit, and the current sampling circuit samples working current of the power tube circuit; the intelligent control module 6 can adopt an MCU controller and is used for receiving and processing signals and controlling the work of each module; the isolation driving module 7 can adopt an isolation transmission circuit and a triode amplifying circuit, the isolation transmission circuit transmits the standby control signal in an isolation mode, and the triode amplifying circuit amplifies the signal; the output processing module 8 adopts a half-bridge rectifying circuit and a filter circuit to carry out rectifying and filtering processing; the output sampling module 9 may adopt a resistance voltage-dividing circuit to perform voltage sampling.
Embodiment 2, referring to fig. 2 and fig. 3 based on embodiment 1, the power module 1 includes an ac source, a first transformer W1; the voltage stabilization control module 2 comprises a second rectifier T2, a first voltage stabilizer IC1, a second capacitor C2 and a third capacitor C3;
specifically, the ac source is connected to a primary winding of the first transformer W1, a first end of a secondary winding of the first transformer W1 is connected to the standby control module 3 and a first end of the second rectifier T2, a second end of the secondary winding of the first transformer W1 is connected to a third end of the second rectifier T2, a second end of the second rectifier T2 is grounded, a fourth end of the second rectifier T2 is connected to a first end of the first regulator IC1 and is connected to the ground through the second capacitor C2, a third end of the first regulator IC1 is connected to the intelligent control module 6 and the voltage regulation module 5, and the third capacitor C3 is connected to the second end and the ground of the first regulator IC 1.
In an embodiment, the first regulator IC1 may be a 7805 three-terminal regulator chip.
Further, the standby control module 3 includes an eighth capacitor C8, a first rectifier T1, and a first transistor SCR1;
specifically, a first end of the eighth capacitor C8 is connected to the first end of the secondary winding of the first transformer W1 and the third end of the first rectifier T1, a second end of the eighth capacitor C8 is connected to the processing protection module 4 and the first end of the first rectifier T1, a fourth end of the first rectifier T1 is connected to an anode of the first transistor SCR1, a cathode of the first transistor SCR1 is connected to the second end of the first rectifier T1, and a control end of the first transistor SCR1 is connected to the isolation driving module 7.
In a specific embodiment, the eighth capacitor C8 is an impedance element, and is used as an ac path of the primary winding of the first transformer W1; the first transistor SCR1 can be a single-phase silicon controlled rectifier and is used for controlling short circuit of the eighth capacitor C8, and the specific model is not limited.
Further, the processing protection module 4 includes a first inductor L1, a first capacitor C1, a fourth resistor R4, a fifth capacitor C5, and a first diode D1;
specifically, one end of the first inductor L1 is connected to the second end of the eighth capacitor C8, the other end of the first inductor L1 is connected to one end of the fourth resistor R4 and the first end of the fifth capacitor C5 and is connected to the ground through the first capacitor C1, the cathode of the first diode D1 and the second end of the fifth capacitor C5 are connected to the fourth resistor R4, and the anode of the first diode D1 is connected to the voltage adjustment module 5.
In a specific embodiment, the first inductor L1 and the first capacitor C1 form an LC filter circuit for filtering; the fourth resistor R4, the fifth capacitor C5 and the first diode D1 form an RCD snubber circuit, which absorbs a spike voltage in the RCD snubber circuit.
Further, the voltage regulation module 5 includes a second transformer W2, a first power tube Q1, a second resistor R2, a third resistor R3, a first resistor R1, a fourth capacitor C4, a fifth resistor R5, and a first driver U1;
specifically, a first end of a primary winding of the second transformer W2 is connected to a first end of the fifth capacitor C5, a second end of the primary winding of the second transformer W2 is connected to an anode of the first diode D1 and a drain of the first power tube Q1, a source of the first power tube Q1 is connected to the ground through the fifth resistor R5, a gate of the first power tube Q1 is connected to a ninth end of the first driver U1 through the second resistor R2, an eighth end of the first driver U1 is connected to the seventh end and the ground of the first driver U1 through the third resistor R3, a sixth end of the first driver U1 is connected to the ground through the first resistor R1, a fifth end of the first driver U1 is connected to the fourth end and the ground of the first driver U1 through the fourth capacitor C4, a third end of the first driver U1 is connected to the intelligent control module 6, and a tenth end of the first driver U1 is connected to the third end of the first regulator IC 1.
In a specific embodiment, the first power transistor Q1 may be an N-channel enhancement MOS transistor for adjusting the voltage output by the second transformer W2; the first driver U1 may use the MC33060 to improve the driving capability of the input signal.
Further, the output processing module 8 includes a sixth capacitor C6, a third diode D3, a second diode D2, a seventh capacitor C7, and an output port;
specifically, one end of the sixth capacitor C6 is connected to the second end of the secondary winding of the second transformer W2, the anode of the third diode D3 is connected to the first end and the output port of the secondary winding of the second transformer W2 and is connected to the ground terminal and the cathode of the second diode D2 through the seventh capacitor C7, and the anode of the second diode D2 is connected to the cathode of the third diode D3 and the other end of the sixth capacitor C6.
In a specific embodiment, the sixth capacitor C6, the third diode D3, the second diode D2, and the seventh capacitor C7 form a double-voltage rectification filter circuit.
Further, the output sampling module 9 includes a sixth resistor R6 and a seventh resistor R7;
specifically, one end of the sixth resistor R6 is connected to the first end of the secondary winding of the second transformer W2, the other end of the sixth resistor R6 is connected to the first end of the seventh resistor R7 and the intelligent control module 6, and the second end of the seventh resistor R7 is grounded.
In a specific embodiment, the seventh resistor R7 and the sixth resistor R6 form a resistor divider circuit to implement output voltage sampling.
Further, the intelligent control module 6 includes a first controller U2;
specifically, a power supply end of the first controller U2 is connected to the third end of the first voltage regulator IC1, a first IO end of the first controller U2 is connected to the third end of the first driver U1, a second IO end of the first controller U2 is connected to the source of the first power tube Q1, and a third IO end of the first controller U2 is connected to the first end of the seventh resistor R7.
In an embodiment, the first controller U2 may be an MCU chip, and may be, but is not limited to, an MC68HC908 chip, and adjusts the output pulse signal according to the sampled voltage signal and current signal, so as to implement voltage regulation of the power supply.
Further, the isolation driving module 7 includes a first power supply VCC1, a thirteenth resistor R13, a first optocoupler U3, a twelfth resistor R12, a second power supply VCC2, an eleventh resistor R11, a ninth capacitor C9, and a tenth resistor R10;
specifically, first power VCC1 connects first opto-coupler U3's first end through thirteenth resistance R13, and first opto-coupler U3's second end is connected the fourth IO end of first controller U2, and second power VCC2 connects first opto-coupler U3's third end through twelfth resistance R12, and tenth resistance R10's first end and ninth electric capacity C9's one end and the other end and the ground end of connecting ninth electric capacity C9 through eleventh resistance R11 are connected to first opto-coupler U3's fourth end.
In a specific embodiment, the first optical coupler U3 may be a PC817 optical coupler.
Further, the isolation driving module 7 further includes a second switching tube VT2, a first switching tube VT1, an eighth resistor R8, and a ninth resistor R9;
specifically, the base of the second switching tube VT2 is connected to the second end of the tenth resistor R10, the collector of the second switching tube VT2 is connected to the collector of the first switching tube VT1 and is connected to the anode of the first transistor SCR1 through the eighth resistor R8, the emitter of the second switching tube VT2 is connected to the base of the first switching tube VT1 and is connected to the cathode of the first transistor SCR1 through the ninth resistor R9, and the emitter of the first switching tube VT1 is connected to the control end of the first transistor SCR 1.
In a specific embodiment, the second switching transistor VT2 and the first switching transistor VT1 may both be NPN triodes, and amplify the input signal to drive the first transistor SCR1 to turn off.
According to the MCU power management circuit, required alternating current is provided by a power module 1, the alternating current is rectified and voltage-stabilized through a second rectifier T2 and a first voltage stabilizer IC1 so as to provide required direct current for a first controller U2 and a first driver U1, when standby control is not needed, a fourth IO end of the first controller U2 controls a first optocoupler U3 to be conducted, a signal transmitted by the first optocoupler U3 is amplified through a first switching tube VT1 and a second switching tube VT2 and drives a first transistor SCR1 to be conducted, an eighth capacitor C8 is in short circuit, an alternating current source is transmitted to a first inductor L1 and a first capacitor C1 for filtering processing, at the moment, the first controller U2 generates a required pulse signal according to a current signal sampled by a fifth resistor R5, a voltage signal sampled by a sixth resistor R6 and a seventh resistor R7, the pulse signal is processed by the first driver U1 so as to control the conduction degree of a first power tube Q1 to cut off, then control the output of a second transformer W2 to realize voltage regulation, the sixth resistor R6 and a seventh resistor R7 output voltage is further raised, the output of the third capacitor C3 is controlled by a fourth optocoupler C3, the fourth capacitor C8 is further controlled to be reduced, and the standby diode to control the standby diode to be transmitted to be smaller, and the standby control the standby output of the standby transistor C3 and the standby control of the standby diode to be smaller.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (10)

1. An MCU power management circuit is characterized in that,
this MCU power management circuit includes: the intelligent control system comprises a power supply module, a voltage stabilizing control module, a standby control module, a processing protection module, a voltage regulating module, an intelligent control module, an isolation driving module, an output processing module and an output sampling module;
the power module is used for providing alternating current electric energy for the circuit and carrying out voltage reduction treatment on the alternating current electric energy;
the voltage stabilization control module is connected with the power supply module and used for rectifying and stabilizing the electric energy output by the power supply module through a rectifying and voltage stabilizing circuit and transmitting the electric energy to the voltage regulation module and the intelligent control module;
the intelligent control module is connected with the voltage stabilizing control module, the voltage regulating module and the output sampling module, and is used for receiving the signals output by the voltage regulating module and the output sampling module, generating pulse signals and outputting standby control signals;
the isolation driving module is connected with the intelligent control module and is used for carrying out isolation transmission and amplification processing on the standby control signal through an isolation transmission circuit and a triode amplification circuit;
the standby control module is connected with the power supply module and the drive control module, is used for receiving the signal output by the isolation drive module, controls the capacitor circuit to work through the switch circuit, and is used for performing standby control on the power supply module through the capacitor circuit and controlling the transmission of electric energy;
the processing protection module is connected with the standby control module, is used for filtering the electric energy output by the standby control module, and is used for transmitting the electric energy to the voltage regulation module and absorbing a voltage spike in a circuit;
the voltage regulating module is connected with the processing protection module and the voltage stabilizing control module, is used for improving the driving capability of the pulse signal through the driving circuit and driving the conduction degree of the power tube circuit, is used for sampling the working current of the power tube circuit and outputting a current signal, and is used for performing voltage stabilizing regulation on the input electric energy and outputting the electric energy;
the output processing module is connected with the voltage regulating module and is used for performing rectification filtering processing on the electric energy output by the voltage regulating module and outputting the electric energy;
the output sampling module is connected with the output processing module and used for sampling voltage of the electric energy output by the output processing module and transmitting the electric energy to the intelligent control module.
2. The MCU power management circuit of claim 1, wherein the power module comprises an ac source, a first transformer; the voltage stabilization control module comprises a second rectifier, a first voltage stabilizer, a second capacitor and a third capacitor;
the alternating current source is connected with a primary winding of a first transformer, a first end of a secondary winding of the first transformer is connected with the standby control module and a first end of a second rectifier, a second end of the secondary winding of the first transformer is connected with a third end of the second rectifier, a second end of the second rectifier is grounded, a fourth end of the second rectifier is connected with a first end of a first voltage stabilizer and is connected with a ground end through a second capacitor, a third end of the first voltage stabilizer is connected with the intelligent control module and the voltage regulation module, and a third capacitor is connected with the second end and the ground end of the first voltage stabilizer.
3. The MCU power management circuit according to claim 2, wherein the standby control module comprises an eighth capacitor, a first rectifier, a first transistor;
the first end of the eighth capacitor is connected with the first end of the secondary winding of the first transformer and the third end of the first rectifier, the second end of the eighth capacitor is connected with the processing protection module and the first end of the first rectifier, the fourth end of the first rectifier is connected with the anode of the first transistor, the cathode of the first transistor is connected with the second end of the first rectifier, and the control end of the first transistor is connected with the isolation driving module.
4. The MCU power management circuit of claim 3, wherein the processing protection module comprises a first inductor, a first capacitor, a fourth resistor, a fifth capacitor, a first diode;
one end of the first inductor is connected with the second end of the eighth capacitor, the other end of the first inductor is connected with one end of the fourth resistor and the first end of the fifth capacitor and is connected with the ground end through the first capacitor, the fourth resistor is connected with the cathode of the first diode and the second end of the fifth capacitor, and the anode of the first diode is connected with the voltage adjusting module.
5. The MCU power management circuit of claim 4, wherein the voltage regulation module comprises a second transformer, a first power transistor, a second resistor, a third resistor, a first resistor, a fourth capacitor, a fifth resistor, a first driver;
the first end of the primary winding of the second transformer is connected with the first end of the fifth capacitor, the second end of the primary winding of the second transformer is connected with the anode of the first diode and the drain of the first power tube, the source of the first power tube is connected with the ground end through the fifth resistor, the gate of the first power tube is connected with the ninth end of the first driver through the second resistor, the eighth end of the first driver is connected with the seventh end and the ground end of the first driver through the third resistor, the sixth end of the first driver is connected with the ground end through the first resistor, the fifth end of the first driver is connected with the fourth end and the ground end of the first driver through the fourth capacitor, the third end of the first driver is connected with the intelligent control module, and the tenth end of the first driver is connected with the third end of the first voltage stabilizer.
6. The MCU power management circuit of claim 5, wherein the output processing module comprises a sixth capacitor, a third diode, a second diode, a seventh capacitor and an output port;
one end of the sixth capacitor is connected with the second end of the secondary winding of the second transformer, the anode of the third diode is connected with the first end and the output port of the secondary winding of the second transformer and is connected with the ground end and the cathode of the second diode through the seventh capacitor, and the anode of the second diode is connected with the cathode of the third diode and the other end of the sixth capacitor.
7. The MCU power management circuit of claim 6, wherein the output sampling module comprises a sixth resistor and a seventh resistor;
one end of the sixth resistor is connected with the first end of the secondary winding of the second transformer, the other end of the sixth resistor is connected with the first end of the seventh resistor and the intelligent control module, and the second end of the seventh resistor is grounded.
8. The MCU power management circuit of claim 7, wherein the intelligent control module comprises a first controller;
the power supply end of the first controller is connected with the third end of the first voltage stabilizer, the first IO end of the first controller is connected with the third end of the first driver, the second IO end of the first controller is connected with the source electrode of the first power tube, and the third IO end of the first controller is connected with the first end of the seventh resistor.
9. The MCU power management circuit of claim 8, wherein the isolation driving module comprises a first power supply, a thirteenth resistor, a first optocoupler, a twelfth resistor, a second power supply, an eleventh resistor, a ninth capacitor, and a tenth resistor;
the first power supply is connected with the first end of the first optical coupler through a thirteenth resistor, the second end of the first optical coupler is connected with the fourth IO end of the first controller, the second power supply is connected with the third end of the first optical coupler through a twelfth resistor, the fourth end of the first optical coupler is connected with the first end of the tenth resistor and one end of a ninth capacitor, and the other end of the ninth capacitor and the ground end are connected through an eleventh resistor.
10. The MCU power management circuit of claim 9, wherein the isolation driving module further comprises a second switch tube, a first switch tube, an eighth resistor, a ninth resistor;
the base electrode of the second switch tube is connected with the second end of the tenth resistor, the collector electrode of the second switch tube is connected with the collector electrode of the first switch tube and is connected with the anode of the first transistor through the eighth resistor, the emitter electrode of the second switch tube is connected with the base electrode of the first switch tube and is connected with the cathode of the first transistor through the ninth resistor, and the emitter electrode of the first switch tube is connected with the control end of the first transistor.
CN202211301831.3A 2022-10-24 2022-10-24 MCU power management circuit Pending CN115566877A (en)

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CN202211301831.3A CN115566877A (en) 2022-10-24 2022-10-24 MCU power management circuit

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116155114A (en) * 2023-04-19 2023-05-23 深圳市安和威电力科技股份有限公司 Insulated DC-DC (direct current-direct current) regulating power supply control device based on IGBT (insulated Gate Bipolar transistor)
CN117498708A (en) * 2023-12-29 2024-02-02 深圳市七彩虹禹贡科技发展有限公司 Power conversion regulating circuit for mainboard

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116155114A (en) * 2023-04-19 2023-05-23 深圳市安和威电力科技股份有限公司 Insulated DC-DC (direct current-direct current) regulating power supply control device based on IGBT (insulated Gate Bipolar transistor)
CN117498708A (en) * 2023-12-29 2024-02-02 深圳市七彩虹禹贡科技发展有限公司 Power conversion regulating circuit for mainboard
CN117498708B (en) * 2023-12-29 2024-03-19 深圳市七彩虹禹贡科技发展有限公司 Power conversion regulating circuit for mainboard

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