CN204992539U - Many mains voltage of active filter keep watch on pulse protected location circuit - Google Patents
Many mains voltage of active filter keep watch on pulse protected location circuit Download PDFInfo
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- CN204992539U CN204992539U CN201520513396.XU CN201520513396U CN204992539U CN 204992539 U CN204992539 U CN 204992539U CN 201520513396 U CN201520513396 U CN 201520513396U CN 204992539 U CN204992539 U CN 204992539U
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Abstract
The utility model discloses a many mains voltage of active filter keep watch on pulse protected location circuit, a serial communication port, keep watch on unit, logical pulse unit, 5V and the 3.3V power monitoring programmed protection unit of blockadeing including 24V power isolation unit, many mains voltage. This circuit unit is small, and is with low costs, practices thrift the space. This circuit unit is wide to DC power supply's protective range, can keep watch on 24V, 5V and 3.3V three routes DC power supply simultaneously. 24V be drive power supply protection, 5V to be control logic power protection, 3.3V be treater core power protection, the protection type is comprehensive, if break down and to blockade pulse signal in certain way.
Description
Technical field
The utility model relates to a kind of multi-power source voltage watchdog pulse protected location circuit of active filter.
Background technology
Along with the development of modern power electronic, microelectronics and computer technology, the power conversion unit based on PWM technology obtains to be applied more and more widely.PWM rectification has the advantages such as power factor is high, the response time fast, energy in bidirectional flow, low capacity energy storage link, constant dc pressure-controlled, is widely used in fields such as electric power system active power filtering, reactive power compensation, power flowcontrol, solar power generation and alternating current-direct current drive systems.
But current most of equipment does not use the protection of the DC power supply such as 24V, 5V, 3.3V, or not DC power supply protection and pulse blocking connecting initiatively, but fault of leaving occurs, until the locking pulse output that the thorough fault of power supply or some components and parts of equipment are just passive after thoroughly can not working; Have in partial power protective circuit at some, do not carry out 24V isolation detection, the detection of 5V logic and 3.3V core power; Because drive circuit general in active filter is all that 24V powers, 5V and 3.3V be then for give chip power supply, like this once 24V power supply occurs abnormal, if just may there is the possibility of demolishing drive plate and IGBT in locking pulse not in time, the extension of accident may be caused, cause unnecessary loss.Same when there are pwm pulse abnormal conditions after 5V or 3.3V abnormity of power supply, the pulse that drive plate can be caused to export is abnormal there is the situation damaging drive plate and IGBT.Simultaneously current equipment also not the 24V for powering to drive plate with for coming to the isolated from power such as 5V and 3.3V of chip power supply, so just may cause drive plate and or IGBT demolish while defective chip.
Summary of the invention
For the problems referred to above, the purpose of this utility model is the multi-power source voltage watchdog pulse protected location circuit providing a kind of active filter.
For achieving the above object, the multi-power source voltage watchdog pulse protected location circuit of a kind of active filter described in the utility model, comprise 24V isolated from power unit, multi-power source voltage monitor unit, logic locking pulse unit, 5V and 3.3V Power Supply Monitoring programmed protection unit, wherein;
24V isolated from power unit, for responding to the voltage change signal of 24V power supply, and sends 24V isolation voltage signal to multi-power source voltage monitor unit after treatment;
Multi-power source voltage monitor unit,
24V isolation voltage signal for sending according to 24V isolated from power unit sends low voltage signal to logic locking pulse unit;
For responding to the voltage change signal of 3.3V power supply, when this voltage change signal is lower than its internal preset reference value, send low voltage signal to logic locking pulse unit;
Logic locking pulse unit,
Low voltage signal for sending according to multi-power source voltage monitor unit is in locking pulse guard mode in logic;
For responding to the voltage change signal of 3.3V power supply, making high voltage transfer low-voltage to and blocking pwm pulse signal;
For responding to the voltage change signal of 5V power supply, when this voltage change signal is lower than its internal preset reference value, makes high voltage transfer low-voltage to and blocking pwm pulse signal.
Preferably, described 24V isolated from power unit comprises light-coupled isolation chip U1, the first operational amplifier U2, the second operational amplifier U3, the first resistance R1, the second resistance R2, the 3rd resistance R3, the 4th resistance R4 and the 5th resistance R5, wherein;
One termination 24V DC power supply of the first resistance, its other end respectively with the second resistance, 3rd resistance connects, the earth terminal of another termination 24V DC power supply of the 3rd resistance, the other end of the second resistance and the reverse input end of the first operational amplifier, the positive input of described first operational amplifier, negative supply voltage end all connects the earth terminal of 24V DC power supply, the positive voltage termination 24V DC power supply of described first operational amplifier, output termination the 4th resistance of described operational amplifier, the negative pole end of the first photodiode in another termination light-coupled isolation chip of 4th resistance, the positive pole termination 24V DC power supply of the first photodiode, the reverse input end of negative pole termination first operational amplifier of the second photodiode in described light-coupled isolation chip, the earth terminal of the positive pole termination 24V DC power supply of the second photodiode, the reverse input end of negative pole termination second operational amplifier of the 3rd photodiode of described light-coupled isolation chip, the positive input of positive pole termination second operational amplifier of the 3rd photodiode, the output of described second operational amplifier be 24V isolation signals end and with described multi-power source voltage monitor unit, the positive voltage termination 5V DC power supply of described second operational amplifier, its negative supply voltage end ground connection, the reverse input end of one termination second operational amplifier of described 5th resistance, the output of another termination second operational amplifier.
Preferably, described multi-power source voltage monitor unit comprises voltage monitor U4, the 6th resistance R6, the 7th resistance R7, the 8th resistance R8, the 9th resistance R9, the tenth resistance R10, the 11 resistance R11, the 12 resistance R12, the first electric capacity C1, the second electric capacity C2, wherein;
The VCC termination 5V DC power supply of described voltage monitor, one end of the first electric capacity and one end of the 12 resistance, the other end ground connection of the first electric capacity, the RST port of voltage monitor described in another termination of 12 resistance, the RST port of described voltage monitor connects the logic blockade port of described logic locking pulse unit; First of described voltage monitor exports one end of termination the 7th resistance, and first of voltage monitor described in another termination of the 7th resistance regulates port; Second of described voltage monitor exports one end of termination the 6th resistance, and second of voltage monitor described in another termination of the 6th resistance regulates port; First of described voltage monitor regulates port to connect the 8th resistance and the 9th resistance, 24V isolation signals end described in another termination of the 8th resistance, the other end ground connection of the 9th resistance; Second of described voltage monitor regulates port to connect the tenth resistance and the 11 resistance, another termination 3.3 direct voltage of the tenth resistance, the other end ground connection of the 11 resistance; The TMR port of described voltage monitor connects the second electric capacity, the other end ground connection of the second electric capacity; The GND of described voltage monitor holds ground connection.
Preferably, described logic locking pulse unit comprise first with door chip U5, second and door chip U6, the 13 resistance R13, the 14 resistance R14, the 15 resistance R15, the 16 resistance R16, the 17 resistance R17, the 18 resistance R18, the 3rd electric capacity C3, the 4th electric capacity C4, wherein;
Described first blocks with multiple logics of door chip the RST port that port all connects voltage monitor with door chip and described second; Described first accesses termination the 13 resistance with the first pulse signal of door chip and connects outside pwm pulse signal and produce the PWMBH signal that chip produces, described first accesses termination the 14 resistance and outside pwm pulse signal with the second pulse signal of door chip produces the PWMBL signal that chip produces, the other end ground connection of the 13 resistance and the 14 resistance; Described first accesses termination the 15 resistance with the 3rd pulse signal of door chip and connects outside pwm pulse signal and produce the PWMAH signal that chip produces, described first accesses termination the 16 resistance and outside pwm pulse signal with the 4th pulse signal of door chip produces the PWMAL signal that chip produces, the other end ground connection of the 15 resistance and the 16 resistance; Described first with VCC termination the 3rd electric capacity of door chip and connect 5V DC power supply, the other end ground connection of the 3rd electric capacity;
Described second access termination the 17 resistance with the 5th pulse signal of door chip and connects outside pwm pulse signal and produce the PWMCH signal that chip produces, described second and the 6th pulse signal of door chip access termination the 18 resistance and connect outside pwm pulse signal and produce the PWMCL signal that chip produces; The other end ground connection of the 17 resistance and the 18 resistance;
Described first connects external drive plate circuit with the first pulse signal output end of door chip, the second pulse signal output end, the 3rd pulse signal output end, the 4th pulse signal output end.Described second connects external drive plate circuit with the 5th pulse signal output end of door chip, the 6th pulse signal output end.
Preferably, described 5V and 3.3V Power Supply Monitoring programmed protection unit comprises process chip U7, the 19 resistance R19, the 20 resistance R20, the 5th electric capacity C5, the 6th electric capacity C6, LED, wherein;
Reset termination the 19 resistance of described process chip, another termination 3.3V DC power supply of the 19 resistance;
The VCC termination 5V DC power supply of described process chip and the 5th electric capacity, the other end ground connection of the 5th electric capacity;
The positive pole of the PFI termination 3.3V DC power supply of described process chip, the 6th electric capacity and light-emitting diode, the other end ground connection of the 6th electric capacity, the negative pole of light-emitting diode connects the 20 resistance, and another termination program of the 20 resistance blocks port;
The PFO termination pwm signal of described process chip produces processor.
The beneficial effects of the utility model are:
This circuit unit volume described in the utility model is little, and cost is low, conserve space.This circuit unit is wide to the protection range of DC power supply, can monitor 24V, 5V and 3.3V three-way direct current power supply simultaneously.24V is driving power protection, 5V is control logic power protection, 3.3V is processor core power protection, and protect types is comprehensive, if breaking down in certain road gets final product locking pulse signal.Driving power can be separated with control power supply during the design of this circuit unit, be independent of each other mutually! This circuit unit takes light-coupled isolation to 24V power supply, and isolation effect is good, and anti-interference ability is strong.This circuit unit takes duplicate protection to 5V and 3.3V, improves protective capability and adds reliability.This circuit unit can adjust according to design needs the protection supervision value of 24V and 3.3V power supply, flexible and convenient to use, applied widely.The response of this circuit unit is fast, when can locking pulse fast after certain road abnormity of power supply, and guarantee accident not extendedization.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of 24V isolated from power unit described in the utility model embodiment;
Fig. 2 is the circuit diagram of multi-power source voltage monitor unit described in the utility model embodiment;
Fig. 3 is the circuit diagram of logic locking pulse unit described in the utility model embodiment;
Fig. 4 is the circuit diagram of 5V and 3.3V Power Supply Monitoring programmed protection unit described in the utility model embodiment.
Embodiment
Below in conjunction with Figure of description, the utility model is further described.
Be a kind of described in the present embodiment multi-power source voltage watchdog pulse protected location circuit of active filter as Figure 1-Figure 4, comprise 24V isolated from power unit, multi-power source voltage monitor unit, logic locking pulse unit, 5V and 3.3V Power Supply Monitoring programmed protection unit, wherein; 24V isolated from power unit for responding to the voltage change signal of 24V power supply, and sends 24V isolation voltage signal to multi-power source voltage monitor unit after treatment; The 24V isolation voltage signal that multi-power source voltage monitor unit is used for sending according to 24V isolated from power unit sends low voltage signal to logic locking pulse unit, also for responding to the voltage change signal of 3.3V power supply, when this voltage change signal is lower than its internal preset reference value, send low voltage signal to logic locking pulse unit; The low voltage signal that logic locking pulse unit is used for sending according to multi-power source voltage monitor unit is in locking pulse guard mode in logic; also for responding to the voltage change signal of 3.3V power supply; make high voltage transfer low-voltage to and block pwm pulse signal; simultaneously for responding to the voltage change signal of 5V power supply; when this voltage change signal is lower than its internal preset reference value, makes high voltage transfer low-voltage to and block pwm pulse signal.
Described 24V isolated from power unit comprises light-coupled isolation chip U1, the first operational amplifier U2, the second operational amplifier U3, the first resistance R1, the second resistance R2, the 3rd resistance R3, the 4th resistance R4 and the 5th resistance R5, wherein, the one termination 24V DC power supply of the first resistance R1, its other end respectively with the second resistance R2, 3rd resistance R3 connects, the earth terminal (24VGND) of another termination 24V DC power supply of the 3rd resistance R3, the other end of the second resistance R2 and the reverse input end of the first operational amplifier U2, the positive input of described first operational amplifier U2, negative supply voltage end all connects the earth terminal (24VGND) of 24V DC power supply, the positive voltage termination 24V of described first operational amplifier U2, output termination the 4th resistance R4 of described first operational amplifier U2, the negative pole end of the first photodiode in another termination light-coupled isolation chip of 4th resistance R4, the positive pole termination 24V of the first photodiode, the reverse input end of the negative pole termination first operational amplifier U2 of the second photodiode in described light-coupled isolation chip, the earth terminal (24VGND) of the positive pole termination 24V DC power supply of the second photodiode, the reverse input end of the negative pole termination second operational amplifier U3 of the 3rd photodiode of described light-coupled isolation chip, the positive input of the positive pole termination second operational amplifier U3 of the 3rd photodiode, the output of described second operational amplifier U3 be 24V isolation signals end (CHK24V) and with described multi-power source voltage monitor unit, the positive voltage termination 5V of described second operational amplifier U3, its negative supply voltage end ground connection DGND, the reverse input end of the one termination second operational amplifier U3 of described 5th resistance R5, the output of another termination second operational amplifier U3.
Described multi-power source voltage monitor unit comprises voltage monitor U4, the 6th resistance R6, the 7th resistance R7, the 8th resistance R8, the 9th resistance R9, the tenth resistance R10, the 11 resistance R11, the 12 resistance R12, the first electric capacity C1, the second electric capacity C2, wherein; The VCC termination 5V of described voltage monitor, one end of the first electric capacity C1 and one end of the 12 resistance R12, the other end ground connection DGND of the first electric capacity C1, the RST port of voltage monitor described in another termination of 12 resistance R12, the RST port of described voltage monitor connects logic blockade port (nLOCK) of described logic locking pulse unit; First output (OUT1) of described voltage monitor connects one end of the 7th resistance R7, and first of voltage monitor described in another termination of the 7th resistance R7 regulates port (ADJ1); Second output (OUT2) of described voltage monitor connects one end of the 6th resistance R6, and second of voltage monitor described in another termination of the 6th resistance R6 regulates port (ADJ2); First of described voltage monitor regulates port (ADJ1) to meet the 8th resistance R8 and the 9th resistance R9,24V isolation signals end (CHK24V) described in another termination of the 8th resistance R9, the other end ground connection DGND of the 9th resistance R9; Second of described voltage monitor regulates port (ADJ2) to meet the tenth resistance R10 and the 11 resistance R11, another termination 3.3 direct voltage of the tenth resistance R10, the other end ground connection DGND of the 11 resistance; The TMR port of described voltage monitor meets the second electric capacity C2, the other end ground connection of the second electric capacity C2; The GND of described voltage monitor holds ground connection.
Described logic locking pulse unit comprise first with door chip U5, second and door chip U6, the 13 resistance R13, the 14 resistance R14, the 15 resistance R15, the 16 resistance R16, the 17 resistance R17, the 18 resistance R18, the 3rd electric capacity C3, the 4th electric capacity C4, wherein; Described first blocks with door chip U5 and described second and multiple logics of door chip U6 the RST port that port nLOCK all connects voltage monitor; Described first meets the 13 resistance R13 with the first pulse signal incoming end (2 pin) of door chip U5 and connects outside pwm pulse signal and produce the PWMBH signal that chip produces, described first connects the 14 resistance R14 and outside pwm pulse signal with the second pulse signal incoming end (5 pin) of door chip U5 produces the PWMBL signal that chip produces, the other end ground connection of the 13 resistance R13 and the 14 resistance R14; Described first meets the 15 resistance R15 with the 3rd pulse signal incoming end (9 pin) of door chip U5 and connects outside pwm pulse signal and produce the PWMAH signal that chip produces, described first connects the 16 resistance R16 and outside pwm pulse signal with the 4th pulse signal incoming end (12 pin) of door chip U5 produces the PWMAL signal that chip produces, the other end ground connection of the 15 resistance R15 and the 16 resistance R16; Described first with VCC termination the 3rd electric capacity C3 of door chip U5 and connect 5V DC power supply, the other end ground connection of the 3rd electric capacity C3; Described second meets the 17 resistance R17 with the 5th pulse signal incoming end (9 pin) of door chip U6 and connects outside pwm pulse signal and produce the PWMCH signal that chip produces, described second and the 6th pulse signal incoming end (12 pin) of door chip U6 meet the 18 resistance R18 and connect outside pwm pulse signal and produce the PWMCL signal that chip produces; The other end ground connection of the 17 resistance R17 and the 18 resistance R18; Described first connects external drive plate circuit with first pulse signal output end (3 pin) of door chip U5, the second pulse signal output end (6 pin), the 3rd pulse signal output end (11 pin), the 4th pulse signal output end (8 pin).Described second connects external drive plate circuit with the 5th pulse signal output end (11 pin) of door chip U6, the 6th pulse signal output end (8 pin).
Described 5V and 3.3V Power Supply Monitoring programmed protection unit comprises process chip U7, the 19 resistance R19, the 20 resistance R20, the 5th electric capacity C5, the 6th electric capacity C6, LED, wherein; The reset terminal (1 pin) of described process chip U7 meets the 19 resistance R19, another termination 3.3V DC power supply of the 19 resistance R19; The VCC termination 5V DC power supply of described process chip and the 5th electric capacity C5, the other end ground connection of the 5th electric capacity C5; The positive pole of the PFI termination 3.3V DC power supply of described process chip, the 6th electric capacity C6 and light-emitting diode, the other end ground connection of the 6th electric capacity C6, the negative pole of light-emitting diode connects the 20 resistance, and another termination program of the 20 resistance R20 blocks port RESET; The PFO termination pwm signal of described process chip produces processor.
When 24V power supply occurs extremely, in Fig. 1, the voltage at 1 place changes, the Long-term change trend that the voltage at 2 places in Fig. 1 is also and then identical can be caused, thus the change of 3 place's voltages in Fig. 2 can be caused, when 3 place's voltages are lower than chip U4 internal reference value, 6 place's output levels in 5 pin of chip U4 and Fig. 2 can become low level from high level.After in Fig. 2,6 place's level become low level in Fig. 38 all will become low level, logically locking pulse protection.
When after 3.3V abnormity of power supply, the change of 4 place's voltages in Fig. 2, when 4 place's voltages are lower than chip U4 internal reference value, 6 place's output levels in 5 pin of chip U4 and Fig. 2 can become low level from high level, and after in Fig. 2,6 place's level become low level in Fig. 38 will all become low level and then logically locking pulse.The 5 pin outputs of 3.3V abnormity of power supply simultaneously Fig. 4 chips U7 can become low level from high level, produce locking pulse in chip at pwm pulse, make in Fig. 37 to become low level and rise and then locking pulse in a program.
When abnormal (5 in Fig. 2) appears in 5V power supply, 6 in Fig. 2 be meeting output low level equally, makes 8 in Fig. 3 all will become low level, logically carries out pulse blocking.Fig. 4 chips U7 is also monitoring 5V voltage in real time simultaneously, when 5V voltage drop is to chip U7 internal reference voltage, 5 pin of U7 understand output low level equally, are producing locking pulse in chip at pwm pulse, make in Fig. 37 to become low level and rise and then locking pulse in a program.
Any road power supply of 24V, 5V and 3.3V occurs extremely in sum, and this pulse blocking unit all can block pwm pulse reliably, fast and export.
This circuit unit volume described in the utility model is little, and cost is low, conserve space.This circuit unit is wide to the protection range of DC power supply, can monitor 24V, 5V and 3.3V three-way direct current power supply simultaneously.24V is driving power protection, 5V is control logic power protection, 3.3V is processor core power protection, and protect types is comprehensive, if breaking down in certain road gets final product locking pulse signal.Driving power can be separated with control power supply during the design of this circuit unit, be independent of each other mutually! This circuit unit takes light-coupled isolation to 24V power supply, and isolation effect is good, and anti-interference ability is strong.This circuit unit takes duplicate protection to 5V and 3.3V, improves protective capability and adds reliability.This circuit unit can adjust according to design needs the protection supervision value of 24V and 3.3V power supply, flexible and convenient to use, applied widely.The response of this circuit unit is fast, when can locking pulse fast after certain road abnormity of power supply, and guarantee accident not extendedization.
Above; be only preferred embodiment of the present utility model; but protection range of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the change that can expect easily or replacement, all should be encompassed within protection range of the present utility model.Therefore, the protection range that protection range of the present utility model should define with claim is as the criterion.
Claims (5)
1. a multi-power source voltage watchdog pulse protected location circuit for active filter, is characterized in that, comprises 24V isolated from power unit, multi-power source voltage monitor unit, logic locking pulse unit, 5V and 3.3V Power Supply Monitoring programmed protection unit, wherein;
24V isolated from power unit, for responding to the voltage change signal of 24V power supply, and sends 24V isolation voltage signal to multi-power source voltage monitor unit after treatment;
Multi-power source voltage monitor unit,
24V isolation voltage signal for sending according to 24V isolated from power unit sends low voltage signal to logic locking pulse unit;
For responding to the voltage change signal of 3.3V power supply, when this voltage change signal is lower than its internal preset reference value, send low voltage signal to logic locking pulse unit;
Logic locking pulse unit,
Low voltage signal for sending according to multi-power source voltage monitor unit is in locking pulse guard mode in logic;
For responding to the voltage change signal of 3.3V power supply, making high voltage transfer low-voltage to and blocking pwm pulse signal;
For responding to the voltage change signal of 5V power supply, when this voltage change signal is lower than its internal preset reference value, makes high voltage transfer low-voltage to and blocking pwm pulse signal.
2. the multi-power source voltage watchdog pulse protected location circuit of active filter according to claim 1, it is characterized in that, described 24V isolated from power unit comprises light-coupled isolation chip U1, the first operational amplifier U2, the second operational amplifier U3, the first resistance R1, the second resistance R2, the 3rd resistance R3, the 4th resistance R4 and the 5th resistance R5, wherein;
One termination 24V DC power supply of the first resistance, its other end respectively with the second resistance, 3rd resistance connects, the earth terminal of another termination 24V DC power supply of the 3rd resistance, the other end of the second resistance and the reverse input end of the first operational amplifier, the positive input of described first operational amplifier, negative supply voltage end all connects the earth terminal of 24V DC power supply, the positive voltage termination 24V DC power supply of described first operational amplifier, output termination the 4th resistance of described operational amplifier, the negative pole end of the first photodiode in another termination light-coupled isolation chip of 4th resistance, the positive pole termination 24V DC power supply of the first photodiode, the reverse input end of negative pole termination first operational amplifier of the second photodiode in described light-coupled isolation chip, the earth terminal of the positive pole termination 24V DC power supply of the second photodiode, the reverse input end of negative pole termination second operational amplifier of the 3rd photodiode of described light-coupled isolation chip, the positive input of positive pole termination second operational amplifier of the 3rd photodiode, the output of described second operational amplifier be 24V isolation signals end and with described multi-power source voltage monitor unit, the positive voltage termination 5V DC power supply of described second operational amplifier, its negative supply voltage end ground connection, the reverse input end of one termination second operational amplifier of described 5th resistance, the output of another termination second operational amplifier.
3. the multi-power source voltage watchdog pulse protected location circuit of active filter according to claim 1, it is characterized in that, described multi-power source voltage monitor unit comprises voltage monitor U4, the 6th resistance R6, the 7th resistance R7, the 8th resistance R8, the 9th resistance R9, the tenth resistance R10, the 11 resistance R11, the 12 resistance R12, the first electric capacity C1, the second electric capacity C2, wherein;
The VCC termination 5V DC power supply of described voltage monitor, one end of the first electric capacity and one end of the 12 resistance, the other end ground connection of the first electric capacity, the RST port of voltage monitor described in another termination of 12 resistance, the RST port of described voltage monitor connects the logic blockade port of described logic locking pulse unit; First of described voltage monitor exports one end of termination the 7th resistance, and first of voltage monitor described in another termination of the 7th resistance regulates port; Second of described voltage monitor exports one end of termination the 6th resistance, and second of voltage monitor described in another termination of the 6th resistance regulates port; First of described voltage monitor regulates port to connect the 8th resistance and the 9th resistance, 24V isolation signals end described in another termination of the 8th resistance, the other end ground connection of the 9th resistance; Second of described voltage monitor regulates port to connect the tenth resistance and the 11 resistance, another termination 3.3 direct voltage of the tenth resistance, the other end ground connection of the 11 resistance; The TMR port of described voltage monitor connects the second electric capacity, the other end ground connection of the second electric capacity; The GND of described voltage monitor holds ground connection.
4. the multi-power source voltage watchdog pulse protected location circuit of active filter according to claim 1, it is characterized in that, described logic locking pulse unit comprise first with door chip U5, second and door chip U6, the 13 resistance R13, the 14 resistance R14, the 15 resistance R15, the 16 resistance R16, the 17 resistance R17, the 18 resistance R18, the 3rd electric capacity C3, the 4th electric capacity C4, wherein;
Described first blocks with multiple logics of door chip the RST port that port all connects voltage monitor with door chip and described second; Described first accesses termination the 13 resistance with the first pulse signal of door chip and connects outside pwm pulse signal and produce the PWMBH signal that chip produces, described first accesses termination the 14 resistance and outside pwm pulse signal with the second pulse signal of door chip produces the PWMBL signal that chip produces, the other end ground connection of the 13 resistance and the 14 resistance; Described first accesses termination the 15 resistance with the 3rd pulse signal of door chip and connects outside pwm pulse signal and produce the PWMAH signal that chip produces, described first accesses termination the 16 resistance and outside pwm pulse signal with the 4th pulse signal of door chip produces the PWMAL signal that chip produces, the other end ground connection of the 15 resistance and the 16 resistance; Described first with VCC termination the 3rd electric capacity of door chip and connect 5V DC power supply, the other end ground connection of the 3rd electric capacity;
Described second access termination the 17 resistance with the 5th pulse signal of door chip and connects outside pwm pulse signal and produce the PWMCH signal that chip produces, described second and the 6th pulse signal of door chip access termination the 18 resistance and connect outside pwm pulse signal and produce the PWMCL signal that chip produces; The other end ground connection of the 17 resistance and the 18 resistance;
Described first connects external drive plate circuit with the first pulse signal output end of door chip, the second pulse signal output end, the 3rd pulse signal output end, the 4th pulse signal output end; Described second connects external drive plate circuit with the 5th pulse signal output end of door chip, the 6th pulse signal output end.
5. the multi-power source voltage watchdog pulse protected location circuit of active filter according to claim 1, it is characterized in that, described 5V and 3.3V Power Supply Monitoring programmed protection unit comprises process chip U7, the 19 resistance R19, the 20 resistance R20, the 5th electric capacity C5, the 6th electric capacity C6, LED, wherein;
Reset termination the 19 resistance of described process chip, another termination 3.3V DC power supply of the 19 resistance;
The VCC termination 5V DC power supply of described process chip and the 5th electric capacity, the other end ground connection of the 5th electric capacity;
The positive pole of the PFI termination 3.3V DC power supply of described process chip, the 6th electric capacity and light-emitting diode, the other end ground connection of the 6th electric capacity, the negative pole of light-emitting diode connects the 20 resistance, and another termination program of the 20 resistance blocks port;
The PFO termination pwm signal of described process chip produces processor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520513396.XU CN204992539U (en) | 2015-07-16 | 2015-07-16 | Many mains voltage of active filter keep watch on pulse protected location circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520513396.XU CN204992539U (en) | 2015-07-16 | 2015-07-16 | Many mains voltage of active filter keep watch on pulse protected location circuit |
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| CN204992539U true CN204992539U (en) | 2016-01-20 |
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| CN201520513396.XU Expired - Fee Related CN204992539U (en) | 2015-07-16 | 2015-07-16 | Many mains voltage of active filter keep watch on pulse protected location circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106300238A (en) * | 2016-11-07 | 2017-01-04 | 安图实验仪器(郑州)有限公司 | Circuit protection system based on Phototube Coupling |
| CN109521262A (en) * | 2017-09-20 | 2019-03-26 | 意法半导体国际有限公司 | For measured power management module can not mask voltage monitor circuit |
-
2015
- 2015-07-16 CN CN201520513396.XU patent/CN204992539U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106300238A (en) * | 2016-11-07 | 2017-01-04 | 安图实验仪器(郑州)有限公司 | Circuit protection system based on Phototube Coupling |
| CN106300238B (en) * | 2016-11-07 | 2018-05-11 | 安图实验仪器(郑州)有限公司 | Circuit protection system based on Phototube Coupling |
| CN109521262A (en) * | 2017-09-20 | 2019-03-26 | 意法半导体国际有限公司 | For measured power management module can not mask voltage monitor circuit |
| US10620267B2 (en) | 2017-09-20 | 2020-04-14 | Stmicroelectronics International N.V. | Circuitry for testing non-maskable voltage monitor for power management block |
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Effective date of registration: 20230329 Address after: 519000 Room 1001, Building 25, No. 3333, Lovers North Road, Tangjiawan Town, High-tech Zone, Zhuhai City, Guangdong Province Patentee after: Zhuhai Gexinneng Enterprise Management Co.,Ltd. Address before: Building C, No. 26, No. 13, Jingsheng South Fourth Street, Jinqiao Science and Technology Industrial Base, Tongzhou Park, Zhongguancun Science and Technology Park, Tongzhou District, Beijing 100044 Patentee before: A-ENERGY ELECTRICAL (BEIJING) CO.,LTD. |
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