CN202190258U - Power sequence control circuit - Google Patents
Power sequence control circuit Download PDFInfo
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- CN202190258U CN202190258U CN 201120080943 CN201120080943U CN202190258U CN 202190258 U CN202190258 U CN 202190258U CN 201120080943 CN201120080943 CN 201120080943 CN 201120080943 U CN201120080943 U CN 201120080943U CN 202190258 U CN202190258 U CN 202190258U
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Abstract
The utility model provides a power sequence control circuit and aims to overcome shortcomings of unreliable working, low controllability, high cost and the like of a prior power sequence control circuit. The power sequence control circuit includes sequence controller and an electric switch circuit. An input terminal of the sequence controller is connected to a power source. An output terminal of the sequence controller is connected to a control terminal of the electric switch circuit. The sequence controller is realized to be a programmable logic device. Output signals of the sequence controller are controlled by programming the programmable logic device, thereby controlling the connection or disconnection of the electric switch circuit. The power sequence control circuit in the utility model is simple and practical, and can be adjusted conveniently. And the power sequence control circuit in the utility model has a low cost.
Description
Technical field
The utility model relates to a kind of electrifying timing sequence control circuit, specifically, relates to a kind of circuit that can accurately control the electrifying timing sequence of each power supply in many power electronic system.
Background technology
In many power electronic system, the IC chip integration improves, and complexity and quantity also increase greatly.For guaranteeing that many power electronic system normally power on, and can the normal and stable reliable work, must control the power supply electrifying sequential.Simultaneously, the power supply SECO also is even more important to the latch-up of eliminating complicated IC chip.Irrational electrifying timing sequence can influence the job stability of working life and many power electronic system of IC chip.
In the prior art, the scheme of controlling the electrifying timing sequence of many power supplys mainly contains following three kinds: first kind is the Enable Pin control that utilizes power module; Second kind is to control through the time constant of adjustment power supply soft-start circuit to power on; The third is to utilize special-purpose electrifying timing sequence controller.
First kind of scheme is that the power supply output control diode in series conducting that utilizes prime to power on ends, and the power circuit of directly controlling the rear end enables, and the main feature of this method is that circuit is simple, is fit to two and powers on simultaneously to three-way power and each power supply basic demand.Owing to be that simple diode is as ON-OFF control circuit; The time delay of uncontrollable each road power supply electrifying; And it is unreliable to work, and when the electrifying timing sequence of power supply own and desired value differ bigger, easily diode is burnt, and only is applicable to simple electrifying timing sequence control.
Second kind of scheme is to control through the time constant of adjustment power supply soft-start circuit to power on; Be used for the situation that multiple power supplies is provided by each separate power source module; Each power module adopts the order that powers on of the soft-start circuit control out-put supply that separates; But because the start-up time and the power-on time of each module have nothing in common with each other, the set time parameter of soft-start circuit can not be applicable to the power module of different manufacturers, and controllability is relatively poor; During simultaneously for the supply voltage that powers on earlier by after the converted power source design of supply voltage that powers on, still can't adopt this method.
The third scheme is through the electric sequence and the sequential of each road power supply of power supply electrifying time schedule controller control.Fig. 1 illustrates the circuit diagram of using above-mentioned the third scheme.
In Fig. 1, label 101 expression power supplys, label 102 expression time schedule controllers, label 103 expression circuit systems.
After powering on, DC/DC and time schedule controller 102 are started working.At the beginning of powering on, all crystals Guan Jun is in off state, and the circuit system 103 of back level does not have the power supply input.When transistor reached unlocking condition, the DC/DC of response began to circuit system 103 power supplies.Each transistorized base voltage of output control through time schedule controller 102, thus each transistorized opening time controlled, reach the do not go the same way purpose of power supply electrifying sequential of control.
Here, DC/DC-0, DC/DC-1 and DC/DC-2 are voltage conversion circuit, are used for the voltage transitions of power supply 101 is become different voltages with different.As shown in Figure 1, DC/DC-0 becomes 3.3V with the voltage transitions of power supply 101, and DC/DC-1 becomes 2.5V with the voltage transitions of power supply 101, and DC/DC-2 becomes 1.8V with the voltage transitions of power supply 101.The electrifying timing sequence controller controls to circuit system through the transistorized conduction and cut-off shown in the control chart 1 which road voltage is provided.
Yet the shortcoming of the third scheme is that electrifying timing sequence controller relative cost is higher, and logical resource and interface resource are relatively limited, and needs special-purpose programmed logic external member.
Along with increasing of number of power sources in the system; Utilize general power circuit Enable Pin control to power on and be difficult to satisfy the demand of electrifying timing sequence control; Need a kind of technical scheme that can satisfy following two primary conditions: (1) can freely be controlled the electrifying timing sequence of many power supplys as required, and each power work does not disturb mutually and performance does not have influence; (2) can accurately control time delay.
The utility model content
Unreliable, the shortcomings such as controllability is relatively poor, cost height of electrifying timing sequence control circuit work to traditional; The utility model provides a kind of electrifying timing sequence control circuit; Said electrifying timing sequence control circuit can comprise time schedule controller and electronic switching circuit, and the input of time schedule controller is connected to power supply, and the output of time schedule controller is connected to the control end of said electronic switching circuit; Wherein, Time schedule controller is implemented as programmable logic device, through programmable logic device being programmed the output signal of control timing controller, to control being switched on or switched off of said electronic switching circuit.
Said electrifying timing sequence circuit also can comprise the charged power circuit, and the output of said electronic switching circuit is connected to the Enable Pin of charged power circuit.
Said at least one charged power circuit can be a level shifting circuit.
Said electronic switching circuit can comprise first resistor to the, five resistors, the first transistor and transistor seconds; One end of first resistor is connected to the output of time schedule controller as the control end of electronic switching circuit; The other end of first resistor is connected to the base stage of the first transistor, and the collector electrode of the first transistor is connected to second resistor, one end, the grounded emitter of the first transistor; The other end of second resistor is connected to power supply; One end of the 3rd resistor is connected between the collector electrode and second resistor of the first transistor, the other end ground connection of the 3rd resistor, and an end of the 4th resistor is connected between the collector electrode and second resistor of the first transistor; The other end of the 4th resistor is connected to the base stage of transistor seconds; The collector electrode of transistor seconds is connected to an end of the 5th resistor, and the other end of the 5th resistor is connected to power supply, the grounded emitter of transistor seconds.
Node between the collector electrode of transistor seconds and the 5th resistor connects the Enable Pin of charged power circuit as the output of said electronic switching circuit.
Electrifying timing sequence control circuit according to the utility model utilizes programmable logic device and triode to control accurate electrifying timing sequence; Because great majority need the system of control multichannel electrifying timing sequence all unavoidably to want practical programmable logic device; Therefore; Only utilize in the plate programmable logic device such as existing CPLD just can realize electrifying timing sequence control circuit, only need take the several pins in the plate, and embed and realize that control module gets final product according to the utility model.Therefore, this electrifying timing sequence control circuit is simple and practical, easy to adjust, and cost is very low.
Description of drawings
In conjunction with the drawings, from the description of following embodiment, the utility model these and/or others and advantage will become clear, and are easier to understand, wherein:
Fig. 1 is the circuit diagram that illustrates according to the electrifying timing sequence control circuit of prior art;
Fig. 2 is the block diagram that illustrates according to the sequential control circuit of the utility model;
Fig. 3 is that to illustrate be the circuit diagram of the sequential control circuit of example according to the utility model with three road sequential control circuits.
Embodiment
Describe exemplary embodiment below with reference to accompanying drawings in detail according to the utility model.
Fig. 2 is the block diagram that illustrates according to the sequential control circuit of the utility model.
As shown in Figure 2, comprise time schedule controller 201 and electronic switching circuit 202 according to the electrifying timing sequence control circuit 200 of the utility model, wherein; The input of time schedule controller 201 is connected to power supply; The output of time schedule controller 201 is connected to the control end of electronic switching circuit 202, and wherein, time schedule controller 201 is implemented as programmable logic device; Through programmable logic device being programmed the output signal of control timing controller 201, with being switched on or switched off of control electronic switching circuit 202.
Electrifying timing sequence circuit 200 according to another exemplary embodiment of the utility model also can comprise charged power circuit 203, and the output of electronic switching circuit 202 is connected to the Enable Pin of charged power circuit 203.
As shown in Figure 2, the output of said electronic switching circuit 202 is connected to the Enable Pin of charged power circuit 203, and charged power circuit 203 can be a level shifting circuit, for example, and DC/DC, LDO etc.Is example with DC/DC as the charged power circuit, and said DC/DC can convert supply voltage to varying level power supply, to be provided for load.
Can control electrifying timing sequence through being switched on or switched off of output signal controlling electronic switching circuit 202 of time schedule controller 201; For example; When the output signal of time schedule controller 201 was low level, electronic switching circuit 202 was output as low level, and the Enable Pin of charged power circuit 203 is invalid; Charged power circuit 203 is not worked, thereby to load power supply is not provided; When the output signal of time schedule controller 201 was high level, said electronic switching circuit 202 was output as high level, and the Enable Pin of charged power circuit 203 is effective, and charged power circuit 203 is started working, thereby to load the power supply with particular level is provided.In addition, can be through the time schedule controller 201 as programmable logic device be carried out the time delay that powers on that inside programming is controlled corresponding output end.
Said electronic switching circuit 202 can be a transistor switching circuit, will describe the concrete configuration of electronic switching circuit 202 after a while with reference to Fig. 3 in detail.
In addition, need to prove that need to supply power for time schedule controller 201, electronic switching circuit 202, charged power circuit 203 separately through power supply Vin, promptly the power circuit of time schedule controller 201 and electronic switching circuit 202 is not in controlled electrifying timing sequence.At the beginning of powering on, the pairing register value of the output of time schedule controller 201 must be controlled, and is reliable and stable with the electrifying timing sequence that guarantees charged power circuit 203.
Fig. 3 be illustrate according to the utility model to be used to control the circuit diagram that three tunnel sequential are the sequential control circuit of example.
As shown in Figure 3, come to supply power respectively through power module to time schedule controller 201, electronic switching circuit 202, charged power circuit 203, in Fig. 3, charged power circuit 203 is shown as a plurality of DC/DC modules, for example, DC/DC_0 to DC/DC_2.
As shown in Figure 3; In a plurality of electronic switching circuits 202 each all comprises first resistor R, 1 to the 5th resistor R 5, the first transistor Q1 and transistor seconds Q2; One end of first resistor R 1 is connected to the output of time schedule controller 201 as the control end of electronic switching circuit 202; The other end of first resistor R 1 is connected to the base stage of the first transistor Q1, and the collector electrode of the first transistor Q1 is connected to second resistor R, 2 one ends, the grounded emitter of the first transistor Q1; The other end of second resistor R 2 is connected to power supply; One end of the 3rd resistor R 3 is connected between the collector electrode and second resistor R 2 of the first transistor Q1, the other end ground connection of the 3rd resistor R 3, and an end of the 4th resistor R 4 is connected between the collector electrode and second resistor R 2 of the first transistor Q1; The other end of the 4th resistor R 4 is connected to the base stage of transistor seconds Q2; The collector electrode of transistor seconds Q2 is connected to an end of the 5th resistor R 5, and the other end of the 5th resistor R is connected to power supply, the grounded emitter of transistor seconds Q2.
Node between the collector electrode of transistor seconds Q2 and the 5th resistor R 5 is as the output output enable signal EN (being shown as EN_0 to EN_2 respectively in three road electronic switching circuits in Fig. 3) of electronic switching circuit 202; This enable signal is input to charged power circuit 203 (in Fig. 3; Correspond respectively to three tunnel sequential control circuit, charged power circuit 203 is shown as DC/DC_0 to DC/DC_2 respectively).In Fig. 3, DC/DC_0 to DC/DC_3 comes work based on the enable signal EN_0 to EN_2 from a plurality of electronic switching circuit 202 outputs respectively.
As stated, more than with reference to Fig. 2 and Fig. 3 the electrifying timing sequence control circuit according to the utility model has been described, but the utility model is not limited to this.For example, it will be understood by those skilled in the art that the electrifying timing sequence control circuit can increase or reduce the quantity of electronic switching circuit and charged power circuit according to the quantity of the electrifying timing sequence of required control.
In addition; Electrifying timing sequence control circuit according to the utility model utilizes programmable logic device and triode to control accurate electrifying timing sequence; Because the system that great majority need control multichannel electrifying timing sequence all unavoidably will practical programmable logic device, therefore, only utilize in the plate programmable logic device such as existing CPLD just can realize electrifying timing sequence control circuit according to the utility model; Only need take the several pins in the plate, and embedding realizes that control module gets final product.Therefore, this electrifying timing sequence control circuit is simple and practical, easy to adjust, and cost is very low.
Claims (5)
1. an electrifying timing sequence control circuit is characterized in that,
Said electrifying timing sequence control circuit comprises time schedule controller and electronic switching circuit; The input of time schedule controller is connected to power supply; The output of time schedule controller is connected to the control end of said electronic switching circuit, and wherein, time schedule controller is implemented as programmable logic device; Through programmable logic device being programmed the output signal of control timing controller, to control being switched on or switched off of said electronic switching circuit.
2. electrifying timing sequence control circuit as claimed in claim 1 is characterized in that, said electrifying timing sequence circuit also comprises the charged power circuit, and the output of said electronic switching circuit is connected to the Enable Pin of charged power circuit.
3. electrifying timing sequence control circuit as claimed in claim 2 is characterized in that, said at least one charged power circuit is a level shifting circuit.
4. electrifying timing sequence control circuit as claimed in claim 2 is characterized in that, said electronic switching circuit comprises first resistor to the, five resistors, the first transistor and transistor seconds; One end of first resistor is connected to the output of time schedule controller as the control end of electronic switching circuit; The other end of first resistor is connected to the base stage of the first transistor, and the collector electrode of the first transistor is connected to second resistor, one end, the grounded emitter of the first transistor; The other end of second resistor is connected to power supply; One end of the 3rd resistor is connected between the collector electrode and second resistor of the first transistor, the other end ground connection of the 3rd resistor, and an end of the 4th resistor is connected between the collector electrode and second resistor of the first transistor; The other end of the 4th resistor is connected to the base stage of transistor seconds; The collector electrode of transistor seconds is connected to an end of the 5th resistor, and the other end of the 5th resistor is connected to power supply, the grounded emitter of transistor seconds.
5. electrifying timing sequence control circuit as claimed in claim 4 is characterized in that, the node between the collector electrode of transistor seconds and the 5th resistor connects the Enable Pin of charged power circuit as the output of said electronic switching circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120080943 CN202190258U (en) | 2011-03-24 | 2011-03-24 | Power sequence control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120080943 CN202190258U (en) | 2011-03-24 | 2011-03-24 | Power sequence control circuit |
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| Publication Number | Publication Date |
|---|---|
| CN202190258U true CN202190258U (en) | 2012-04-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120080943 Expired - Lifetime CN202190258U (en) | 2011-03-24 | 2011-03-24 | Power sequence control circuit |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102880076A (en) * | 2012-09-26 | 2013-01-16 | 四川迪佳通电子有限公司 | Power supply time sequence simulation generation device and control method |
| CN104735570A (en) * | 2013-12-18 | 2015-06-24 | 展讯通信（上海）有限公司 | Circuit for providing interface voltage to earphone interface circuit and earphone circuit |
| CN105553261A (en) * | 2016-02-19 | 2016-05-04 | 京东方科技集团股份有限公司 | DC-DC conversion control module, DC-DC converter and display device |
| CN109245510A (en) * | 2018-09-19 | 2019-01-18 | 京信通信系统（中国）有限公司 | Starting current suppression circuit, method, control device and equipment |
| CN109274259A (en) * | 2018-10-29 | 2019-01-25 | 西安空间无线电技术研究所 | Power switch machine control method, device and application |
| CN111434508A (en) * | 2019-11-29 | 2020-07-21 | 蜂巢能源科技有限公司 | Control circuits for contactors, power systems and electric vehicles |
| CN112180798A (en) * | 2020-10-09 | 2021-01-05 | 珠海格力电器股份有限公司 | Time sequence control circuit, power supply control circuit and frequency converter |
| CN116111996A (en) * | 2023-01-30 | 2023-05-12 | 无锡艾为集成电路技术有限公司 | A multi-channel programmable load switch circuit, control method and electronic equipment |
| CN120048199A (en) * | 2023-11-27 | 2025-05-27 | 合肥鑫晟光电科技有限公司 | Time sequence control system, control method thereof and display device |
-
2011
- 2011-03-24 CN CN 201120080943 patent/CN202190258U/en not_active Expired - Lifetime
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102880076A (en) * | 2012-09-26 | 2013-01-16 | 四川迪佳通电子有限公司 | Power supply time sequence simulation generation device and control method |
| CN102880076B (en) * | 2012-09-26 | 2015-05-06 | 四川迪佳通电子有限公司 | Power supply time sequence simulation generation device and control method |
| CN104735570A (en) * | 2013-12-18 | 2015-06-24 | 展讯通信（上海）有限公司 | Circuit for providing interface voltage to earphone interface circuit and earphone circuit |
| CN104735570B (en) * | 2013-12-18 | 2018-04-27 | 展讯通信（上海）有限公司 | The circuit and head circuit of interface voltage are provided to earphone interface circuit |
| CN105553261A (en) * | 2016-02-19 | 2016-05-04 | 京东方科技集团股份有限公司 | DC-DC conversion control module, DC-DC converter and display device |
| US10163399B2 (en) | 2016-02-19 | 2018-12-25 | Boe Technology Group Co., Ltd. | DC-DC conversion control module, DC-DC converter, and display device |
| CN109245510A (en) * | 2018-09-19 | 2019-01-18 | 京信通信系统（中国）有限公司 | Starting current suppression circuit, method, control device and equipment |
| CN109245510B (en) * | 2018-09-19 | 2021-02-23 | 京信通信系统（中国）有限公司 | Starting current suppression circuit, starting current suppression method, control device and equipment |
| CN109274259A (en) * | 2018-10-29 | 2019-01-25 | 西安空间无线电技术研究所 | Power switch machine control method, device and application |
| CN109274259B (en) * | 2018-10-29 | 2020-07-14 | 西安空间无线电技术研究所 | Power supply on-off control method, device and application |
| CN111434508A (en) * | 2019-11-29 | 2020-07-21 | 蜂巢能源科技有限公司 | Control circuits for contactors, power systems and electric vehicles |
| CN112180798A (en) * | 2020-10-09 | 2021-01-05 | 珠海格力电器股份有限公司 | Time sequence control circuit, power supply control circuit and frequency converter |
| CN116111996A (en) * | 2023-01-30 | 2023-05-12 | 无锡艾为集成电路技术有限公司 | A multi-channel programmable load switch circuit, control method and electronic equipment |
| CN120048199A (en) * | 2023-11-27 | 2025-05-27 | 合肥鑫晟光电科技有限公司 | Time sequence control system, control method thereof and display device |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: BEIJING AUTELAN TECHNOLOGY CO., LTD. Free format text: FORMER NAME: AUTELAN TECHNOLOGY INC. |
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| CP03 | Change of name, title or address |
Address after: 100193 Beijing city Haidian District Dongbeiwang West Road No. 8 Zhongguancun Software Park Building 5 Building 2 layer Hanvon Technology Patentee after: BEIJING AUTELAN TECHNOLOGY Co.,Ltd. Address before: 100085 Beijing City, Haidian District information industry base on the north power creative building D Building 8 layer Patentee before: Beijing AUTELAN Technology Co.,Ltd. |
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| C41 | Transfer of patent application or patent right or utility model | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 100193, No. 1, building three, zone 9, Zhongguancun Software Park, 8 West Wang Xi Road, Beijing, Haidian District Patentee after: Beijing AUTELAN Technology Co.,Ltd. Address before: 100193 Beijing city Haidian District Dongbeiwang West Road No. 8 Zhongguancun Software Park Building 5 Building 2 layer Hanvon Technology Patentee before: BEIJING AUTELAN TECHNOLOGY Co.,Ltd. |
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| TR01 | Transfer of patent right |
Effective date of registration: 20151117 Address after: 100085 Beijing, East Road, No. 1, building on the north side of the building, room 313, room 3 Patentee after: Beijing Hua Xinaotian network technology Co.,Ltd. Address before: 100193, No. 1, building three, zone 9, Zhongguancun Software Park, 8 West Wang Xi Road, Beijing, Haidian District Patentee before: Beijing AUTELAN Technology Co.,Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120411 |