A safe power supply control circuit for microelectronic devices

Abstract

The present invention discloses a safe power supply control circuit for microelectronic devices, which relates to the technical field of microelectronic devices, and includes a reference drive module, which provides a reference power supply for a first voltage stabilizing module and a second voltage stabilizing module, and performs linear voltage regulation processing respectively, so as to provide the required electric energy for the connected microelectronic devices, and a fluctuation detection module detects the voltage fluctuation state of the first voltage stabilizing module and the second voltage stabilizing module, and when voltage fluctuation occurs in the first voltage stabilizing module or the second voltage stabilizing module, the voltage stabilizing module with voltage fluctuation is controlled to stop working, and the reference drive module, the first output module and the second output module are controlled by the microcontroller module to switch the power transmission path, and the voltage stabilizing module without voltage fluctuation is coordinated to perform voltage regulation, so as to continue to maintain the power supply state of the first output module and the second output module. The safe power supply control circuit for microelectronic devices of the present invention can improve the power supply efficiency, power supply safety and reliability.

Description

Technical Field

[0001] The invention relates to the technical field of microelectronic devices, in particular to a safe power supply control circuit for microelectronic devices. Background Art

[0002] Microelectronic devices, as basic components in the electronics field, such as diodes, transistors, resistors, etc., are manufactured at the micron level, achieving excellent characteristics such as miniaturization, high speed, and low power consumption, and are an indispensable component of various electronic products. As one of the most basic circuits of microelectronic devices, the power supply control circuit generally uses multiple groups of low-dropout linear regulators (LDOs) composed of reference sources, adjustment tubes, amplifiers, etc. to provide multiple low-voltage regulated power supplies to meet the low-voltage requirements of microelectronic devices. However, during the process of multiple low-voltage regulated power supplies, if voltage fluctuations occur, the power supply will automatically stop, causing the microelectronic devices to stop working, reducing the power supply reliability of the circuit, and being unable to flexibly control the power switching of the output branches, reducing the power supply efficiency and power supply safety of the circuit, so it needs to be improved. Summary of the invention

[0003] The embodiment of the present invention provides a safe power supply control circuit for a microelectronic device to solve the problems raised in the above background technology.

[0004] According to an embodiment of the present invention, there is provided a safe power supply control circuit for a microelectronic device, comprising: a power supply module, a reference drive module, a first voltage stabilizing module, a second voltage stabilizing module, a fluctuation detection module, a microcontroller module, a first output module and a second output module;

[0005] A power module, used to access DC power and provide a reference voltage;

[0006] A reference driving module is connected to the power module, the microcontroller module, the first voltage stabilizing module and the second voltage stabilizing module, and is used to receive a reference voltage and perform linear voltage stabilization and regulation processing on the DC power, output a first reference power supply and a second reference power supply, and transmit the first reference power supply to the first voltage stabilizing module when receiving a first power supply signal output by the microcontroller module, transmit the first reference power supply to the second voltage stabilizing module when receiving a first switching signal output by the microcontroller module, and transmit the second reference power supply to the first voltage stabilizing module when receiving a second switching signal output by the microcontroller module;

[0007] A first voltage stabilization module is connected to the power module, and is used to receive the first reference power supply or the second reference power supply and perform linear voltage stabilization and regulation on the DC power to output the first power or the second power;

[0008] A second voltage stabilization module is connected to the power module, and is used to receive the first reference power supply or the second reference power supply and perform linear voltage stabilization and regulation on the DC power, and output the third power supply or the fourth power supply;

[0009] A fluctuation detection module, connected to the first voltage stabilizing module and the second voltage stabilizing module, for performing voltage fluctuation detection on the first electric energy or the second electric energy and outputting a first detection signal when the voltage fluctuates, and performing voltage fluctuation detection on the third electric energy or the fourth electric energy and outputting a second detection signal when the voltage fluctuates;

[0010] A microcontroller module connected to the fluctuation detection module, the first output module and the second output module, configured to output a first power supply signal when the first output module needs power supply, output a second power supply signal when the second output module needs power supply, and stop outputting the first power supply signal and outputting the first switching signal in a timed and cyclic manner when only the first detection signal is received during the period when the first output module and the second output module are simultaneously powered, stop outputting the second power supply signal when the first switching signal is output, stop outputting the second power supply signal when the second detection signal is received, and output the second switching signal in a timed and cyclic manner when the second switching signal is output, and stop outputting the first power supply signal when the second switching signal is output;

[0011] a first output module connected to the first voltage stabilizing module and the second power transmission module, for transmitting the first power or the fourth power transmitted by the second output module to the first power supply terminal of the connected microelectronic device, and transmitting the second power to the second output module upon receiving the second switching signal;

[0012] The second output module is connected to the second voltage stabilizing module and is used to transmit the third electric energy or the second electric energy transmitted by the first output module to the second power supply terminal of the connected microelectronic device, and transmit the fourth electric energy to the first output module when receiving the first switching signal.

[0013] As a further solution of the present invention: the power module includes a power port and a bandgap reference power supply; the reference drive module includes a first amplifier, a first power tube, a first capacitor, a first resistor, a second resistor, a third resistor, a fourth resistor and a first analog switch; the microcontroller module includes a first controller;

[0014] Preferably, the first end of the power port is connected to the source of the first power tube, the drain of the first power tube is connected to one end of the fourth resistor and is connected to the gate of the first power tube and the output end of the first amplifier through the first capacitor, the in-phase end of the first amplifier is connected to the first end of the bandgap reference power supply, the other end of the fourth resistor is connected to one end of the third resistor, the first end and the third end of the first analog switch, the other end of the third resistor is connected to the eighth end and the tenth end of the first analog switch and is connected to the inverting end of the first amplifier and one end of the first resistor through the second resistor, the other end of the first resistor is connected to the second end of the bandgap reference power supply, the second end of the power port and the ground, the second end and the eleventh end of the first analog switch are both connected to the first voltage stabilizing module, the fourth end and the ninth end of the first analog switch are both connected to the second voltage stabilizing module, and the thirteenth end, the sixth end, the fifth end and the tenth end of the first analog switch are respectively connected to the IO1 end, the IO2 end, the IO3 end and the IO4 end of the first controller.

[0015] As a further solution of the present invention: the first voltage stabilizing module includes a second power tube, a second amplifier, a second capacitor, a fifth resistor and an eighth resistor;

[0016] Preferably, the source of the second power tube is connected to the first end of the power port, the drain of the second power tube is connected to the first end of the eighth resistor, the in-phase end of the second amplifier and the first output module and is connected to the output end of the second amplifier and the gate of the second power tube through the fifth resistor and the second capacitor in sequence, the inverting end of the second amplifier is connected to the second end and the eleventh end of the first analog switch, and the second end of the eighth resistor is connected to the second end of the power port.

[0017] As a further solution of the present invention: the fluctuation detection module includes an eleventh resistor, a twelfth resistor, a sixth capacitor, a first comparator, a second comparator, a first diode and a second diode;

[0018] Preferably, the non-inverting end of the first comparator is connected to the inverting end of the second comparator and one end of the sixth capacitor and is connected to the first end of the eighth resistor and one end of the eleventh resistor through the twelfth resistor, the other end of the eleventh resistor is connected to the inverting end of the first comparator and the non-inverting end of the second comparator, the output end of the first comparator and the output end of the second comparator are respectively connected to the anode of the first diode and the anode of the second diode, and the cathode of the first diode is connected to the cathode of the second diode and the IO5 end of the first controller.

[0019] As a further solution of the present invention: the second voltage stabilizing module includes a third amplifier, a third capacitor, a sixth resistor, a third power tube and a seventh resistor;

[0020] Preferably, the inverting end of the third amplifier is connected to the fourth end and the ninth end of the first analog switch, the non-inverting end of the third amplifier is connected to the first end of the seventh resistor, the drain of the third power tube and the second output module and is connected to the output end of the third amplifier and the gate of the third power tube through the sixth resistor and the third capacitor in sequence, the source of the third power tube is connected to the first end of the power port, and the second end of the seventh resistor is connected to the second end of the power port.

[0021] As a further solution of the present invention: the fluctuation detection module further includes a thirteenth resistor, a fourteenth resistor, a seventh capacitor, a first detection device and a second detection device;

[0022] Preferably, the first end of the first detection device is connected to the first end of the second detection device and is connected to one end of the seventh resistor and one end of the fourteenth resistor through a thirteenth resistor, the other end of the fourteenth resistor is connected to the second end of the first detection device and the second end of the second detection device and is grounded through a seventh capacitor, and the third end of the first detection device and the third end of the second detection device are both connected to the IO6 end of the first controller.

[0023] As a further solution of the present invention: the first output module includes a first control tube, a first switch tube, a ninth resistor, a fourth control tube, a fourth capacitor and a first port;

[0024] Preferably, the drain of the first control tube is connected to the first end of the eighth resistor and the drain of the fourth control tube and is connected to the gate of the first control tube and the collector of the first switching tube through a ninth resistor, the source of the first control tube is connected to the first end of the first port and is connected to the emitter of the first switching tube, the second end of the first port and the second end of the power supply port through a fourth capacitor, the source of the fourth control tube is connected to the second output module, and the base of the first switching tube is connected to the gate of the fourth control tube and the IO4 end of the first controller of the first controller.

[0025] As a further solution of the present invention: the second output module includes a third control tube, a tenth resistor, a second switch tube, a second control tube, a fifth capacitor and a second port;

[0026] Preferably, the drain of the third control tube is connected to the drain of the second control tube and the first end of the seventh resistor and is connected to the gate of the third control tube and the collector of the second switch tube through the tenth resistor, the source of the third control tube is connected to the first end of the second port and the source of the fourth control tube and is connected to the second end of the second port, the emitter of the second switch tube and the second end of the power supply port through the fifth capacitor, the base of the second switch tube is connected to the gate of the second control tube and the IO3 end of the first controller, and the source of the second control tube is connected to the first end of the first port.

[0027] Compared with the prior art, the beneficial effects of the present invention are as follows: the safe power supply control circuit for microelectronic devices of the present invention can provide a reference power supply for the first voltage stabilizing module and the second voltage stabilizing module by the reference driving module, so that the first voltage stabilizing module and the second voltage stabilizing module perform linear voltage stabilization and regulation processing to provide the required electric energy for the connected microelectronic devices, and the voltage fluctuation state of the first voltage stabilizing module and the second voltage stabilizing module is detected by the fluctuation detection module, and when the voltage fluctuation occurs in the first voltage stabilizing module or the second voltage stabilizing module, the voltage stabilizing module with voltage fluctuation is controlled to stop working, and the reference driving module, the first output module and the second output module are controlled by the microcontroller module to switch the power transmission path, and the voltage stabilization regulation is coordinated with the voltage stabilizing module without voltage fluctuation, so as to continue to maintain the power supply state of the first output module and the second output module, thereby improving the power supply efficiency, power supply safety and power supply reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0029] Figure 1 A schematic block diagram of a safe power supply control circuit for a microelectronic device provided in an embodiment of the present invention.

[0030] Figure 2 A circuit diagram of a safe power supply control circuit for a microelectronic device provided in an embodiment of the present invention.

[0031] Figure 3 A first circuit diagram of a fluctuation detection module provided in an embodiment of the present invention.

[0032] Figure 4 A second circuit diagram of the fluctuation detection module provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] In one embodiment, see Figure 1, a safe power supply control circuit for a microelectronic device, comprising: a power supply module 1, a reference drive module 2, a first voltage stabilizing module 3, a second voltage stabilizing module 4, a fluctuation detection module 5, a microcontroller module 6, a first output module 7 and a second output module 8;

[0035] Specifically, the power module 1 is used to access DC power and provide a reference voltage;

[0036] The reference driving module 2 is connected with the power supply module 1, the microcontroller module 6, the first voltage regulating module 3 and the second voltage regulating module 4, and is used to receive the reference voltage and perform linear voltage regulation processing on the DC power, output the first reference power supply and the second reference power supply, and transmit the first reference power supply to the first voltage regulating module 3 when receiving the first power supply signal output by the microcontroller module 6, and transmit the first reference power supply to the second voltage regulating module 4 when receiving the first switching signal output by the microcontroller module 6, and transmit the second reference power supply to the first voltage regulating module 3 when receiving the second switching signal output by the microcontroller module 6;

[0037] The first voltage stabilizing module 3 is connected to the power module 1, and is used to receive the first reference power supply or the second reference power supply and perform linear voltage stabilization and regulation on the DC power, and output the first power or the second power;

[0038] The second voltage stabilizing module 4 is connected to the power module 1, and is used to receive the first reference power supply or the second reference power supply and perform linear voltage stabilization and regulation on the DC power, and output the third power supply or the fourth power supply;

[0039] The fluctuation detection module 5 is connected to the first voltage stabilizing module 3 and the second voltage stabilizing module 4, and is used to perform voltage fluctuation detection on the first electric energy or the second electric energy and output a first detection signal when the voltage fluctuates, and to perform voltage fluctuation detection on the third electric energy or the fourth electric energy and output a second detection signal when the voltage fluctuates;

[0040] The microcontroller module 6 is connected to the fluctuation detection module 5, the first output module 7 and the second output module 8, and is used to output a first power supply signal when the first output module 7 needs power supply, and output a second power supply signal when the second output module 8 needs power supply, and during the period when the first output module 7 and the second output module 8 are simultaneously supplying power, only when the first detection signal is received, stop outputting the first power supply signal and output the first switching signal in a timed and cyclic manner, and stop outputting the second power supply signal when the first switching signal is output, and only when the second detection signal is received, stop outputting the second power supply signal and output the second switching signal in a timed and cyclic manner, and stop outputting the first power supply signal when the second switching signal is output;

[0041] The first output module 7 is connected to the first voltage stabilizing module 3 and the second power transmission module, and is used to transmit the first power or the fourth power transmitted by the second output module 8 to the first power supply terminal of the connected microelectronic device, and transmit the second power to the second output module 8 when receiving the second switching signal;

[0042] The second output module 8 is connected to the second voltage stabilizing module 4 and is used to transmit the third electric energy or the second electric energy transmitted by the first output module 7 to the second power supply terminal of the connected microelectronic device, and transmit the fourth electric energy to the first output module 7 when receiving the first switching signal.

[0043] In a specific embodiment, the power supply module 1 may adopt a power supply circuit composed of a power supply port and a bandgap reference power supply, which may be connected to DC power and provide a reference voltage; the reference drive module 2 may adopt a reference drive circuit composed of an error amplifier, a capacitor, a field effect transistor, etc., which may perform multi-channel linear voltage regulation and adjustment processing on the DC power according to the received reference voltage, and then provide a first reference power supply and a second reference power supply; the first voltage stabilization module 3 may adopt a first voltage stabilization circuit composed of an error amplifier, a resistor, a field effect transistor, etc., which may perform linear voltage regulation and adjustment processing on the DC power according to the received reference power supply; the second voltage stabilization module 4 may adopt a second voltage stabilization circuit composed of an error amplifier, a resistor, a field effect transistor, etc., which may perform linear voltage regulation and adjustment processing on the DC power according to the received reference power supply; the fluctuation detection module 5 may adopt a capacitor, a comparator, a detection device The fluctuation detection circuit composed of the first voltage stabilizing module 3 and the second voltage stabilizing module 4 can detect the fluctuation of the voltage output by the first voltage stabilizing module 3 and the second voltage stabilizing module 4; the above-mentioned micro-control module 6 can adopt a micro-control circuit composed of a single-chip microcomputer, which integrates many components such as an arithmetic unit, a controller, a memory, and an input and output device to realize functions such as signal processing, data storage, module control, and timing control; the above-mentioned first output module 7 can adopt a first output circuit composed of a field effect tube, a capacitor, an output port, etc., which can perform power transmission and power transmission switching control, detect energy storage and filtering of the transmitted power and supply power to the first power supply end of the connected microelectronic device; the above-mentioned second output module 8 can adopt a second output circuit composed of a field effect tube, a capacitor, an output port, etc., which can perform power transmission and power transmission switching control, detect energy storage and filtering of the transmitted power and supply power to the second power supply end of the connected microelectronic device.

[0044] In another embodiment, see Figure 1 , Figure 2 , Figure 3 and Figure 4The power module 1 includes a power port and a bandgap reference power supply; the reference drive module 2 includes a first amplifier EA1, a first power tube P1, a first capacitor C1, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4 and a first analog switch U2; the microcontroller module 6 includes a first controller U1;

[0045] Specifically, the first end of the power port is connected to the source of the first power tube P1, the drain of the first power tube P1 is connected to one end of the fourth resistor R4 and is connected to the gate of the first power tube P1 and the output end of the first amplifier EA1 through the first capacitor C1, the in-phase end of the first amplifier EA1 is connected to the first end of the bandgap reference power supply, the other end of the fourth resistor R4 is connected to one end of the third resistor R3, the first end and the third end of the first analog switch U2, the other end of the third resistor R3 is connected to the eighth end and the tenth end of the first analog switch U2 and is connected to the inverting end of the first amplifier EA1 and one end of the first resistor R1 through the second resistor R2, the other end of the first resistor R1 is connected to the second end of the bandgap reference power supply, the second end of the power port and the ground, the second end and the eleventh end of the first analog switch U2 are both connected to the first voltage stabilizing module 3, the fourth end and the ninth end of the first analog switch U2 are both connected to the second voltage stabilizing module 4, and the thirteenth end, the sixth end, the fifth end and the tenth end of the first analog switch U2 are respectively connected to the IO1 end, the IO2 end, the IO3 end and the IO4 end of the first controller U1.

[0046] In a specific embodiment, the bandgap reference power supply provides a high-precision 1V reference voltage; the first amplifier EA1 can use an ADP160 error amplifier; the first power tube P1 can use a P-channel depletion-type field effect tube; the first analog switch U2 can use a CD4066 chip; the first controller U1 can use an STM32 microcontroller.

[0047] Furthermore, the first voltage stabilizing module 3 includes a second power tube P2, a second amplifier EA2, a second capacitor C2, a fifth resistor R5 and an eighth resistor R8;

[0048] Specifically, the source of the second power tube P2 is connected to the first end of the power port, the drain of the second power tube P2 is connected to the first end of the eighth resistor R8, the in-phase end of the second amplifier EA2 and the first output module 7 and is connected to the output end of the second amplifier EA2 and the gate of the second power tube P2 through the fifth resistor R5 and the second capacitor C2 in sequence, the inverting end of the second amplifier EA2 is connected to the second end and the eleventh end of the first analog switch U2, and the second end of the eighth resistor R8 is connected to the second end of the power port.

[0049] In a specific embodiment, the second amplifier EA2 may be an ADP160 error amplifier; the second power tube P2 may be a P-channel depletion field effect tube.

[0050] Further, the fluctuation detection module 5 includes an eleventh resistor R11, a twelfth resistor R12, a sixth capacitor C6, a first comparator A1, a second comparator A2, a first diode D1 and a second diode D2;

[0051] Specifically, the non-inverting end of the first comparator A1 is connected to the inverting end of the second comparator A2 and one end of the sixth capacitor C6, and is connected to the first end of the eighth resistor R8 and one end of the eleventh resistor R11 through the twelfth resistor R12. The other end of the eleventh resistor R11 is connected to the inverting end of the first comparator A1 and the non-inverting end of the second comparator A2. The output end of the first comparator A1 and the output end of the second comparator A2 are respectively connected to the anode of the first diode D1 and the anode of the second diode D2. The cathode of the first diode D1 is connected to the cathode of the second diode D2 and the IO5 end of the first controller U1.

[0052] In a specific embodiment, the sixth capacitor C6 may be a storage capacitor, and cooperate with the twelfth resistor R12 to perform voltage sampling and voltage holding; the first comparator A1 and the second comparator A2 may be hysteresis comparators.

[0053] Further, the second voltage stabilizing module 4 includes a third amplifier EA3, a third capacitor C3, a sixth resistor R6, a third power tube P3 and a seventh resistor R7;

[0054] Specifically, the inverting end of the third amplifier EA3 is connected to the fourth end and the ninth end of the first analog switch U2, the inverting end of the third amplifier EA3 is connected to the first end of the seventh resistor R7, the drain of the third power tube P3 and the second output module 8 and is connected to the output end of the third amplifier EA3 and the gate of the third power tube P3 through the sixth resistor R6 and the third capacitor C3 in sequence, the source of the third power tube P3 is connected to the first end of the power port, and the second end of the seventh resistor R7 is connected to the second end of the power port.

[0055] In a specific embodiment, the third power tube P3 may be a P-channel depletion field effect tube; the third amplifier EA3 may be an ADP160 error amplifier.

[0056] Further, the fluctuation detection module 5 also includes a thirteenth resistor R13, a fourteenth resistor R14, a seventh capacitor C7, a first detection device and a second detection device;

[0057] Specifically, the first end of the first detection device is connected to the first end of the second detection device and is connected to one end of the seventh resistor R7 and one end of the fourteenth resistor R14 through the thirteenth resistor R13, the other end of the fourteenth resistor R14 is connected to the second end of the first detection device and the second end of the second detection device and is grounded through the seventh capacitor C7, and the third end of the first detection device and the third end of the second detection device are both connected to the IO6 end of the first controller U1.

[0058] In a specific embodiment, the seventh capacitor C7 can be selected as a storage capacitor; the circuit composition structure of the first detection device is the same as the circuit composition structure of the first comparator A1 and the first diode D1, and the circuit composition structure of the second detection device is the same as the circuit composition structure of the second comparator A2 and the second diode D2.

[0059] Further, the first output module 7 includes a first control tube N1, a first switch tube V1, a ninth resistor R9, a fourth control tube N4, a fourth capacitor C4 and a first port;

[0060] Specifically, the drain of the first control tube N1 is connected to the first end of the eighth resistor R8 and the drain of the fourth control tube N4, and is connected to the gate of the first control tube N1 and the collector of the first switch tube V1 through the ninth resistor R9; the source of the first control tube N1 is connected to the first end of the first port and is connected to the emitter of the first switch tube V1, the second end of the first port and the second end of the power supply port through the fourth capacitor C4; the source of the fourth control tube N4 is connected to the second output module 8; and the base of the first switch tube V1 is connected to the gate of the fourth control tube N4 and the IO4 terminal of the first controller U1 of the first controller U1.

[0061] In a specific embodiment, the first control tube N1 and the fourth control tube N4 can be N-channel enhancement type field effect tubes; the first switch tube V1 can be an NPN type transistor.

[0062] Further, the second output module 8 includes a third control tube N3, a tenth resistor R10, a second switch tube V2, a second control tube N2, a fifth capacitor C5 and a second port;

[0063] Specifically, the drain of the third control tube N3 is connected to the drain of the second control tube N2 and the first end of the seventh resistor R7, and is connected to the gate of the third control tube N3 and the collector of the second switch tube V2 through the tenth resistor R10; the source of the third control tube N3 is connected to the first end of the second port and the source of the fourth control tube N4, and is connected to the second end of the second port, the emitter of the second switch tube V2 and the second end of the power supply port through the fifth capacitor C5; the base of the second switch tube V2 is connected to the gate of the second control tube N2 and the IO3 end of the first controller U1; and the source of the second control tube N2 is connected to the first end of the first port.

[0064] In a specific embodiment, the third control tube N3 and the second control tube N2 can be N-channel enhancement type field effect tubes; the second switch tube V2 can be NPN type transistors.

[0065] In a safe power supply control circuit for a microelectronic device of the present embodiment, a power supply interface is used to connect direct current power, a bandgap reference power supply provides a reference voltage, which is received by the in-phase terminal of the first amplifier EA1, and a second resistor R2 and a third resistor R3 provide a feedback signal for the first amplifier EA1, and then the first amplifier EA1 is controlled to adjust the conduction state of the first power tube P1, and then a linear voltage regulation process of the direct current power is realized, and a first reference power supply and a second reference power supply are provided. During the period when the first output module 7 and the second output module 8 need to be powered at the same time, the IO1 terminal and the IO2 terminal of the first controller U1 respectively output the first power supply signal and the second power supply signal, the first terminal and the second terminal of the first analog switch U2 are turned on, and the eighth terminal and the ninth terminal are turned on, so that The first analog switch U2 transmits the first reference power supply to the inverting end of the second amplifier EA2, and transmits the second reference power supply to the inverting end of the third amplifier EA3. The second amplifier EA2 cooperates with the second capacitor C2, the fifth resistor R5 and the eighth resistor R8 to control the conduction state of the second power tube P2 to provide the first electric energy. The third amplifier EA3 cooperates with the third capacitor C3, the sixth resistor R6 and the seventh resistor R7 to control the conduction state of the third power tube P3 to provide the third electric energy. The first electric energy is transmitted to the first power supply end of the microelectronic device connected to the first port through the first control tube N1. The fourth capacitor C4 performs energy storage and filtering. The third electric energy is transmitted to the second power supply end of the microelectronic device connected to the second port through the third control tube N3. Capacitor C5 performs energy storage and filtering, and the sixth capacitor C6 performs signal retention and provides a smoothly changing signal. In cooperation with the eleventh resistor R11, the twelfth resistor R12, the first comparator A1, the second comparator A2, the first diode D1 and the second diode D2, when the voltage of the electric energy output by the first voltage stabilizing module 3 fluctuates, the first comparator A1 or the second comparator A2 outputs a first detection signal. Similarly, the seventh electric energy performs signal retention. When the voltage fluctuates in the second voltage stabilizing module 4, the first detection device or the second detection device outputs a second detection signal. When only the IO5 end of the first controller U1 receives the first detection signal, it indicates that the first voltage stabilizing module 3 is abnormal. At this time, the IO1 end of the first controller U1 stops outputting the first power supply signal. The first and second ends of an analog switch U2 are disconnected, and the first reference power supply is stopped from being provided to the second amplifier EA2. At the same time, the IO3 end of the first controller U1 outputs the first switching signal at a fixed time, controls the second switch tube V2 and the second control tube N2 to be turned on, and the third control tube N3 is turned off. The IO2 end of the first controller U1 stops outputting the second power supply signal. At this time, the first reference power supply will be transmitted to the third amplifier EA3 for voltage regulation and output of the fourth electric energy. The fourth electric energy is transmitted to the first port through the second control tube N2, and is stored and filtered by the fourth electric energy. The fifth capacitor C5 is discharged and maintains the third electric energy for the second port. After the timing ends, the first controller U1 stops outputting the first switching signal and outputs the second power supply signal.The third amplifier EA3 cooperates with the second reference power supply to perform voltage stabilization processing, and re-provides the third electric energy for the second port. The fourth capacitor C4 will provide the fourth electric energy for the first port. The I03 end of the first controller U1 cyclically outputs the first switching signal to maintain different voltage supplies for the first port and the second port. Similarly, when only the IO6 end of the first controller U1 receives the second detection signal, it indicates that the second voltage stabilization module 4 is abnormal. The IO4 end of the first controller U1 regularly and cyclically outputs the second switching signal, so that the second amplifier EA2 performs linear voltage stabilization adjustment according to the first reference power supply and the second reference power supply respectively. After adjustment, the electric energy is transmitted to the first port and the second port respectively through the fourth power tube and the third power tube P3. When the electric energy is switched, the fourth capacitor C4 and the fifth capacitor C5 maintain the output voltage and maintain the power supply state of the first port and the second port. ,

[0066] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0067] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A safe power supply control circuit for microelectronic devices, characterized in that: The safe power supply control circuit for microelectronic devices comprises: a power supply module, a reference drive module, a first voltage stabilizing module, a second voltage stabilizing module, a fluctuation detection module, a microcontroller module, a first output module and a second output module; The power supply module is used to access direct current power and provide a reference voltage; The reference driving module is connected to the power module, the microcontroller module, the first voltage stabilizing module and the second voltage stabilizing module, and is used to receive the reference voltage and perform linear voltage stabilization and regulation processing on the DC power, output the first reference power supply and the second reference power supply, and transmit the first reference power supply to the first voltage stabilizing module when receiving the first power supply signal output by the microcontroller module, transmit the first reference power supply to the second voltage stabilizing module when receiving the first switching signal output by the microcontroller module, and transmit the second reference power supply to the first voltage stabilizing module when receiving the second switching signal output by the microcontroller module; The first voltage stabilizing module is connected to the power supply module, and is used to receive the first reference power supply or the second reference power supply and perform linear voltage stabilization and regulation on the DC power to output the first power or the second power; The second voltage stabilizing module is connected to the power module, and is used to receive the first reference power supply or the second reference power supply and perform linear voltage stabilization and regulation on the DC power to output the third power supply or the fourth power supply; The fluctuation detection module is connected to the first voltage stabilizing module and the second voltage stabilizing module, and is used to perform voltage fluctuation detection on the first electric energy or the second electric energy and output a first detection signal when the voltage fluctuates, and to perform voltage fluctuation detection on the third electric energy or the fourth electric energy and output a second detection signal when the voltage fluctuates; The microcontrol module is connected to the fluctuation detection module, the first output module and the second output module, and is used to output a first power supply signal when the first output module needs power supply, and output a second power supply signal when the second output module needs power supply, and during the period when the first output module and the second output module are simultaneously powered, only when the first detection signal is received, stop outputting the first power supply signal and output the first switching signal in a timed and cyclic manner, stop outputting the second power supply signal when the first switching signal is output, stop outputting the second power supply signal when the second detection signal is received, and output the second switching signal in a timed and cyclic manner, and stop outputting the first power supply signal when the second switching signal is output; The first output module is connected to the first voltage stabilizing module and the second power transmission module, and is used to transmit the first power or the fourth power transmitted by the second output module to the first power supply terminal of the connected microelectronic device, and transmit the second power to the second output module when receiving the second switching signal; The second output module is connected to the second voltage stabilizing module and is used to transmit the third electric energy or the second electric energy transmitted by the first output module to the second power supply terminal of the connected microelectronic device, and transmit the fourth electric energy to the first output module when receiving the first switching signal.

2. A safe power supply control circuit for a microelectronic device according to claim 1, characterized in that: The power supply module includes a power supply port and a bandgap reference power supply; the reference drive module includes a first amplifier, a first power tube, a first capacitor, a first resistor, a second resistor, a third resistor, a fourth resistor and a first analog switch; the microcontroller module includes a first controller; The first end of the power port is connected to the source of the first power tube, the drain of the first power tube is connected to one end of the fourth resistor and is connected to the gate of the first power tube and the output end of the first amplifier through the first capacitor, the in-phase end of the first amplifier is connected to the first end of the bandgap reference power supply, the other end of the fourth resistor is connected to one end of the third resistor, the first end and the third end of the first analog switch, the other end of the third resistor is connected to the eighth end and the tenth end of the first analog switch and is connected to the inverting end of the first amplifier and one end of the first resistor through the second resistor, the other end of the first resistor is connected to the second end of the bandgap reference power supply, the second end of the power port and the ground, the second end and the eleventh end of the first analog switch are both connected to the first voltage stabilizing module, the fourth end and the ninth end of the first analog switch are both connected to the second voltage stabilizing module, and the thirteenth end, the sixth end, the fifth end and the tenth end of the first analog switch are respectively connected to the IO1 end, the IO2 end, the IO3 end and the IO4 end of the first controller.

3. A safe power supply control circuit for a microelectronic device according to claim 2, characterized in that: The first voltage stabilizing module includes a second power tube, a second amplifier, a second capacitor, a fifth resistor and an eighth resistor; The source of the second power tube is connected to the first end of the power port, the drain of the second power tube is connected to the first end of the eighth resistor, the in-phase end of the second amplifier and the first output module, and is connected to the output end of the second amplifier and the gate of the second power tube through the fifth resistor and the second capacitor in sequence, the inverting end of the second amplifier is connected to the second end and the eleventh end of the first analog switch, and the second end of the eighth resistor is connected to the second end of the power port.

4. A safe power supply control circuit for a microelectronic device according to claim 3, characterized in that: The fluctuation detection module includes an eleventh resistor, a twelfth resistor, a sixth capacitor, a first comparator, a second comparator, a first diode and a second diode; The non-inverting end of the first comparator is connected to the inverting end of the second comparator and one end of the sixth capacitor and is connected to the first end of the eighth resistor and one end of the eleventh resistor through the twelfth resistor. The other end of the eleventh resistor is connected to the inverting end of the first comparator and the non-inverting end of the second comparator. The output end of the first comparator and the output end of the second comparator are connected to the anode of the first diode and the anode of the second diode respectively. The cathode of the first diode is connected to the cathode of the second diode and the IO5 end of the first controller.

5. A safe power supply control circuit for a microelectronic device according to claim 3, characterized in that: The second voltage stabilizing module includes a third amplifier, a third capacitor, a sixth resistor, a third power tube and a seventh resistor; The inverting end of the third amplifier is connected to the fourth end and the ninth end of the first analog switch, the non-inverting end of the third amplifier is connected to the first end of the seventh resistor, the drain of the third power tube and the second output module, and is connected to the output end of the third amplifier and the gate of the third power tube through the sixth resistor and the third capacitor in sequence, the source of the third power tube is connected to the first end of the power port, and the second end of the seventh resistor is connected to the second end of the power port.

6. A safe power supply control circuit for a microelectronic device according to claim 5, characterized in that: The fluctuation detection module further includes a thirteenth resistor, a fourteenth resistor, a seventh capacitor, a first detection device and a second detection device; The first end of the first detection device is connected to the first end of the second detection device and is connected to one end of the seventh resistor and one end of the fourteenth resistor through the thirteenth resistor, the other end of the fourteenth resistor is connected to the second end of the first detection device and the second end of the second detection device and is grounded through the seventh capacitor, and the third end of the first detection device and the third end of the second detection device are both connected to the IO6 end of the first controller.

7. A safe power supply control circuit for a microelectronic device according to claim 5, characterized in that: The first output module includes a first control tube, a first switch tube, a ninth resistor, a fourth control tube, a fourth capacitor and a first port; The drain of the first control tube is connected to the first end of the eighth resistor and the drain of the fourth control tube and is connected to the gate of the first control tube and the collector of the first switch tube through the ninth resistor; the source of the first control tube is connected to the first end of the first port and is connected to the emitter of the first switch tube, the second end of the first port and the second end of the power supply port through the fourth capacitor; the source of the fourth control tube is connected to the second output module; the base of the first switch tube is connected to the gate of the fourth control tube and the IO4 end of the first controller of the first controller.

8. A safe power supply control circuit for a microelectronic device according to claim 7, characterized in that: The second output module includes a third control tube, a tenth resistor, a second switch tube, a second control tube, a fifth capacitor and a second port; The drain of the third control tube is connected to the drain of the second control tube and the first end of the seventh resistor and is connected to the gate of the third control tube and the collector of the second switch tube through the tenth resistor; the source of the third control tube is connected to the first end of the second port and the source of the fourth control tube and is connected to the second end of the second port, the emitter of the second switch tube and the second end of the power supply port through the fifth capacitor; the base of the second switch tube is connected to the gate of the second control tube and the IO3 end of the first controller; and the source of the second control tube is connected to the first end of the first port.

Images