CN201839189U - Power down maintaining module circuit device - Google Patents
Power down maintaining module circuit device Download PDFInfo
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- CN201839189U CN201839189U CN2010205934274U CN201020593427U CN201839189U CN 201839189 U CN201839189 U CN 201839189U CN 2010205934274 U CN2010205934274 U CN 2010205934274U CN 201020593427 U CN201020593427 U CN 201020593427U CN 201839189 U CN201839189 U CN 201839189U
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Abstract
The utility model discloses a power down maintaining module circuit device which comprises an overvoltage protection switch circuit and a flyback circuit, wherein the overvoltage protection switch circuit is connected with a voltage detection circuit and a first power supply circuit respectively; the flyback circuit is connected with an oscillating circuit, the first power supply circuit, a flyback input filtering circuit, a voltage control circuit and a flyback soft boot circuit respectively; the voltage detection circuit is connected with the voltage control circuit and the flyback soft boot circuit respectively; the first power supply circuit is connected with a second power supply circuit; an amplify circuit is connected with the oscillating circuit; the overvoltage protection switch circuit is connected with the filtering circuit, the voltage detection circuit and the first power supply circuit respectively; the filtering circuit is connected with the amplifying circuit; and the first power supply circuit is connected with the flyback input filtering circuit. The power down maintaining module circuit device has the characteristics of simple structure, convenient use, and low cost, reduces the volume of holding capacitance, limits the charging current of the holding capacitance, reduces the surging current of charging, and is integrally assembled and widely used in fields of electronics, space flight, motor driving and semiconductor testing.
Description
Technical field
The utility model relates to the modular power source power-down retaining circuit, is specially adapted to a kind of power down and keeps the modular circuit device.
Background technology
In the prior art, when electronic system is fallen or lost efficacy at the input power supply, need power supply to provide enough standby times to load.Usually the method that adopts is to realize at the input increase large bulk capacitance C and the diode D of power supply, as shown in Figure 1.
The major defect that adopts electric capacity and diode to exist has:
1, efficient is low.
2, keep the electric capacity volume big.
3, keep the electric capacity charging current uncontrollable, easily cause front end power supply module protection, poor reliability.
Summary of the invention
The purpose of this utility model provides a kind of structure tube list, and is easy to use, keeps the electric capacity volume little, and restriction keeps the electric capacity charging current, reduces the surge current that charges, integrated assembling, and the product reliability height, a kind of power down that cost is low keeps the modular circuit device.
In order to overcome the deficiencies in the prior art, the technical solution of the utility model is to solve like this: a kind of power down keeps the modular circuit device, this circuit arrangement comprises an overvoltage protection switching circuit, a filter circuit, an amplifying circuit, a voltage detecting circuit, an oscillating circuit, a circuit of reversed excitation, first power supply circuits, an anti-sharp input filter circuit, second power supply circuits, a discharge loop, a voltage control circuit, one anti-swashs soft starting circuit, special character of the present utility model be described overvoltage protection switching circuit respectively with voltage detecting circuit, first power supply circuits connect; Described circuit of reversed excitation is connected with oscillating circuit, first power supply circuits, anti-sharp input filter circuit, voltage control circuit, anti-sharp soft starting circuit respectively; Described voltage detecting circuit is connected with voltage control circuit, anti-sharp soft starting circuit again respectively; Described first power supply circuits are connected with second power supply circuits again; Described amplifying circuit is connected with oscillating circuit; Described overvoltage protection switching circuit is connected with filter circuit, voltage detecting circuit, first power supply circuits again respectively; Described filter circuit is connected with amplifying circuit; Described first power supply circuits are connected with anti-sharp input filter circuit again; Described discharge loop is connected with circuit of reversed excitation, anti-sharp input filter circuit, voltage control circuit respectively.
Description of drawings
Fig. 1 keeps modular circuit structural representation block diagram for the prior art power down;
Fig. 2 is a modular circuit structural representation block diagram of the present utility model;
Fig. 3 is the modular circuit structural representation schematic diagram of Fig. 2;
Fig. 4 is the modular structure schematic diagram of Fig. 2.
Embodiment
Accompanying drawing 2,3,4 is embodiment of the present utility model.
Below in conjunction with accompanying drawing summary of the invention is described further:
With reference to shown in Figure 2, a kind of power down keeps the modular circuit device, this circuit arrangement comprise an overvoltage protection switching circuit 1, filter circuit 2, amplifying circuit 3, voltage detecting circuit 4, oscillating circuit 5, circuit of reversed excitation 6, first power supply circuits 7, one anti-swash input filter circuit 8, second power supply circuits 9, discharge loop 10, voltage control circuit 11, one instead swash soft starting circuit 12, described overvoltage protection switching circuit 1 is connected with voltage detecting circuit 4, first power supply circuits respectively; Described circuit of reversed excitation 6 is connected with oscillating circuit 5, first power supply circuits 7, anti-sharp input filter circuit 8, voltage control circuit 11, anti-sharp soft starting circuit 12 respectively; Described voltage detecting circuit 4 is connected with voltage control circuit 11, anti-sharp soft starting circuit 12 again respectively; Described first power supply circuits 7 are connected with second power supply circuits 9 again; Described amplifying circuit 3 is connected with oscillating circuit 5; Described overvoltage protection switching circuit 1 is connected with filter circuit 2, voltage detecting circuit 4, first power supply circuits 7 again respectively; Described filter circuit 2 is connected with amplifying circuit 3; Described first power supply circuits 7 are connected with anti-sharp input filter circuit 8 again; Described discharge loop 10 is connected with circuit of reversed excitation 6, anti-sharp input filter circuit 8, voltage control circuit 11 respectively.
Shown in Figure 3, utilize pulse width modulator frequency setting resistance R 19, capacitor C 21 produces an oscillating circuit 5, by triode V12, triode V11 and resistance R 4, resistance R 18, resistance R 22 is formed amplification 3, wherein said resistance R 4 one ends are connected with power supply, resistance R 4 other ends respectively with capacitor C 14 1 ends, the collector electrode of triode V11 connects, the base stage of triode V11 respectively with resistance R 18, one end of resistance R 22 connects, resistance R 18 other ends are connected the base stage of described triode V12 with the emitter of triode V12, collector electrode successively respectively with resistance R 19, capacitor C 21 1 ends, power supply connects;
By resistance R 2, triode V8, voltage-stabiliser tube V6, capacitor C 7, capacitor C 13 are formed control chip N3 and are imported first power supply circuits 7, and wherein said resistance R 2 bypasses are connected with triode V8, and triode V8 collector electrode is connected with resistance R 2 one ends, base stage is connected with resistance R 2 other ends, base stage is connected with voltage-stabiliser tube V6 one end, and the voltage-stabiliser tube V6 other end is connected with capacitor C 7, capacitor C 13 1 ends respectively, and capacitor C 7, capacitor C 13 other ends are connected with power supply with triode V8 emitter respectively;
By resistance R 3, voltage-stabiliser tube V13, capacitor C 16, capacitor C 17 are formed the 5V voltage reference circuit and are given the N2 mat woven of fine bamboo strips two power supply circuits 9, wherein said resistance R 3 one ends are connected with the 7th pin of power supply and control chip N3, resistance R 3 other ends are connected with voltage-stabiliser tube V13, capacitor C 16, capacitor C 17 1 ends respectively successively, and voltage-stabiliser tube V13, capacitor C 16, capacitor C 17 other end ground connection connect;
Pass through diode V29 rectification after connecting bootstrap capacitor, capacitor C 15 is formed filter circuit 2, wherein said two diode V29 two ends that are connected in series are connected in parallel to a capacitor C 15, capacitor C 15 is connected with resistance R 10 1 ends, resistance R 10 other ends are connected with resistance R 1 one ends, and capacitor C 15 other ends are connected with resistance R 8 one ends;
Provide the Vgs voltage that needs for switch V5 after resistance R 10 current limlitings, voltage-stabiliser tube V1 provides Vgs to form overvoltage protection switching circuit 1, wherein said triode V2, resistance R 1, resistance R 8, switching tube V18 control switch V5 turns on and off, described resistance R 1 other end is connected with the base stage of triode V2, resistance R 1 is connected with emitter, voltage-stabiliser tube V1 one end, the switch V5 of triode V2 respectively again successively, the utmost point electrode of described triode V2, the voltage-stabiliser tube V1 other end insert the VIN end, described capacitor C 1 one terminations are gone into VIN end, capacitor C 1 other end ground connection;
By inductance L 1, resistance R 7, capacitor C 8, capacitor C 9, capacitor C 10, capacitor C 11, voltage-stabiliser tube V9, diode V27 forms the anti-input filter circuit 8 that swashs, wherein said inductance L 1 one terminations are gone into the VIN end, inductance L 1 other end successively respectively with capacitor C 8, capacitor C 9, resistance R 7, voltage-stabiliser tube V9 one end connects, resistance R 7, the bypass of capacitor C 10 connects a capacitor C 11, capacitor C 8, capacitor C 9, capacitor C 10, capacitor C 11 other end ground connection connect, the voltage-stabiliser tube V9 other end is connected with diode V27, the diode V27 other end respectively with switching tube V14, the tap of transformer T1 primary coil connects;
By control chip N3, switching tube V14, transformer T1, rectifying tube V25, rectifying tube V26, capacitor C 23, resistance R 11, resistance R 24, inductance L 2 are formed circuit of reversed excitation 6, wherein said control chip N3 the 6th pin is connected with switching tube V14, the 2nd pin is connected with resistance R 20, resistance R 11 1 ends respectively successively, and the tap of transformer T1 transformer T1 secondary coil is connected capacitor C 23 other end ground connection successively respectively with rectifying tube V25, rectifying tube V26, capacitor C 23, inductance L 2 one ends;
By switch V21, triode V4, resistance R 6, diode V24, capacitor C 4, capacitor C 18 are formed circuit of reversed excitation soft starting circuit 12, be connected with emitter, diode V24 one end of triode V4 respectively successively on wherein said switch V21 one tip node, the switch V21 other end is connected with collector electrode, capacitor C 4, capacitor C 18 1 ends of triode V4 respectively successively, and capacitor C 4 other ends are connected with base stage, resistance R 6 one ends of triode V4 respectively, and resistance R 6 other ends are connected with capacitor C 18 other ends;
By resistance R 31, resistance R 40, resistance R 13, resistance R 14, resistance R 41, comparator N2:1, comparator N2:2 forms input voltage detection circuit 4, wherein said resistance R 31 1 terminations are gone into the VIN end, resistance R 31 other ends are connected with resistance R 40 1 ends, resistance R 40 other ends respectively with comparator N2:1 positive pole, resistance R 41 1 ends connect, resistance R 41 other ends are connected with first pin of comparator N2:1 and the negative pole of comparator N2:2 respectively, first pin of comparator N2:1 is connected with resistance R 13 1 ends, the negative pole of comparator N2:1 respectively with resistance R 13 other ends, resistance R 14 1 ends connect, resistance R 14 other ends are connected with the 7th pin of comparator N2:2, the 7th pin of comparator N2:2 respectively with switch V21, switching tube V18 connects, the anti-sharp operating state of switch V21 control;
Switching tube V10, diode V28 form discharge circuit loop 10, wherein said voltage-stabiliser tube V7 protection switch pipe V10 overvoltage;
By voltage-stabiliser tube V7, switching tube V16, switching tube V17, triode V15, triode V3, resistance R 5, resistance R 9, resistance R 11, resistance R 12, resistance R 20, resistance R 21, resistance R 24, resistance R 25 resistance R 28, resistance R 29, resistance R 30, resistance R 35, resistance R 36, capacitor C 2, capacitor C 3, capacitor C 19, capacitor C 20, capacitor C 22, capacitor C 24, capacitor C 26 is formed voltage control circuit 11, wherein said voltage-stabiliser tube V7 one end successively respectively with switching tube V10, inductance L 2, capacitor C 24, one end of resistance R 28 is connected with the emitter of triode V3, the voltage-stabiliser tube V7 other end successively respectively with capacitor C 26, resistance R 30, the collector electrode of triode V3 connects, capacitor C 26, resistance R 30 other ends are connected with switching tube V17, capacitor C 24 other end ground connection, switching tube V17 and capacitor C 3, resistance R 9 one ends connect, capacitor C 3 other end ground connection, the base stage of triode V3 respectively with resistance R 28, resistance R 29 1 ends connect, resistance R 29 other ends are connected with triode V15 collector electrode, the emitter of triode V15, base stage is connected with switching tube V16, resistance R 9 other ends are connected with switching tube V18 with switching tube V16, resistance R 28 other ends respectively with resistance R 25, resistance R 11, resistance R 24, resistance R 20 1 ends are connected with control chip N3 the 2nd pin, resistance R 20 other ends are connected with capacitor C 22 1 ends, capacitor C 22 other ends are connected with switch V21 with control chip N3 the 1st pin, resistance R 21 1 terminations are gone into the VRE end, resistance R 21 other ends and capacitor C 2, resistance R 25 other ends, resistance R 5 one terminations are gone into control chip N3 the 3rd pin, capacitor C 2 other ends successively respectively with resistance R 35, resistance R 36, resistance R 24 other ends, the emitter of triode V15 connects, and resistance R 36 is connected with switching tube V14.
Voltage control circuit 11 control switchs turn on and off.When input detecting circuit partly detected input voltage and is higher than set point 16.5V, circuit of reversed excitation was started working, and was external maintenance electric capacity charging with set point.Switch V5 conducting, output is normal.When input voltage was lower than set point 16V, circuit of reversed excitation was closed, and switch V5 closes, and switch V10 conducting is given load discharge by external maintenance electric capacity.
Shown in Figure 4, will keep electric capacity to be isolated from outside the power supply bus, utilize and improve the volume that the electric capacity charging voltage reduces to keep electric capacity to greatest extent, control keeps the charging current of electric capacity.Adopt SMD Surface Mount technology on the technology, metal shell embedding encapsulation.
The utility model compared with prior art has structure tube list, and is easy to use, the product reliability height, the characteristics that cost is low, inside modules adopt superchip assembling, special-purpose fixable type metal shell, the embedding of high thermal conductivity casting glue has reduced thermal resistance to greatest extent, has improved the reliability of product. Simultaneously, adopt the mode that improves output voltage, anti-sharp control to reduce to keep the volume of electric capacity at circuit, restriction keeps the capacitor charging electric current, reduces the surge current that charges, and integrated assembling has improved product reliability. Be widely used in the fields such as electronics industry, space flight, aviation, mine, motor-driven, robot, semiconductor test.
Claims (1)
1. a power down keeps the modular circuit device, this circuit arrangement comprises an overvoltage protection switching circuit (1), a filter circuit (2), an amplifying circuit (3), a voltage detecting circuit (4), an oscillating circuit (5), a circuit of reversed excitation (6), first power supply circuits (7), an anti-sharp input filter circuit (8), second power supply circuits (9), a discharge loop (10), a voltage control circuit (11), one anti-swashs soft starting circuit (12), it is characterized in that described overvoltage protection switching circuit (1) respectively with voltage detecting circuit (4), first power supply circuits (7) connect; Described circuit of reversed excitation (6) is connected with oscillating circuit (5), first power supply circuits (7), anti-sharp input filter circuit (8), voltage control circuit (11), anti-sharp soft starting circuit (12) respectively; Described voltage detecting circuit (4) is connected with voltage control circuit (11), anti-sharp soft starting circuit (12) again respectively; Described first power supply circuits (7) are connected with second power supply circuits (9) again; Described amplifying circuit (3) is connected with oscillating circuit (5); Described overvoltage protection switching circuit (1) is connected with first power supply circuits (7) with filter circuit (2), voltage detecting circuit (4) again respectively; Described filter circuit (2) is connected with amplifying circuit (3); Described first power supply circuits (7) are connected with anti-sharp input filter circuit (8) again; Described discharge loop (10) is connected with circuit of reversed excitation (6), anti-sharp input filter circuit (8), voltage control circuit (11) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205934274U CN201839189U (en) | 2010-11-04 | 2010-11-04 | Power down maintaining module circuit device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205934274U CN201839189U (en) | 2010-11-04 | 2010-11-04 | Power down maintaining module circuit device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201839189U true CN201839189U (en) | 2011-05-18 |
Family
ID=44009289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205934274U Expired - Lifetime CN201839189U (en) | 2010-11-04 | 2010-11-04 | Power down maintaining module circuit device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201839189U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103078615A (en) * | 2011-12-29 | 2013-05-01 | 上海寰创通信科技股份有限公司 | Delay circuit and method thereof |
| CN104850182A (en) * | 2015-05-18 | 2015-08-19 | 西安诺瓦电子科技有限公司 | Circuit structure applied to embedded system and power-fail protection method |
| CN109245537A (en) * | 2018-09-18 | 2019-01-18 | 陕西泽瑞微电子有限公司 | A kind of holding circuit of airborne power supply modules |
| CN113036899A (en) * | 2021-03-10 | 2021-06-25 | 中国科学院长春光学精密机械与物理研究所 | Undervoltage and power-down protection system of aviation photoelectric equipment |
-
2010
- 2010-11-04 CN CN2010205934274U patent/CN201839189U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103078615A (en) * | 2011-12-29 | 2013-05-01 | 上海寰创通信科技股份有限公司 | Delay circuit and method thereof |
| CN104850182A (en) * | 2015-05-18 | 2015-08-19 | 西安诺瓦电子科技有限公司 | Circuit structure applied to embedded system and power-fail protection method |
| CN109245537A (en) * | 2018-09-18 | 2019-01-18 | 陕西泽瑞微电子有限公司 | A kind of holding circuit of airborne power supply modules |
| CN113036899A (en) * | 2021-03-10 | 2021-06-25 | 中国科学院长春光学精密机械与物理研究所 | Undervoltage and power-down protection system of aviation photoelectric equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110518 |