CN2565203Y - Circuir for controlling electric sequence on multi-channel power - Google Patents
Circuir for controlling electric sequence on multi-channel power Download PDFInfo
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- CN2565203Y CN2565203Y CN 02205297 CN02205297U CN2565203Y CN 2565203 Y CN2565203 Y CN 2565203Y CN 02205297 CN02205297 CN 02205297 CN 02205297 U CN02205297 U CN 02205297U CN 2565203 Y CN2565203 Y CN 2565203Y
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Abstract
The utility model discloses a circuit for controlling electric sequence on multi-channel power, which at least comprises an electronic switching circuit and a control circuit. The electronic switching circuit is connected in series in an input circuit of a post-electrification electric power supply, and the control circuit is used for controlling delaying and on-off of the electronic switching circuit. The circuit is positioned between the input circuit of a pre-electrification electric power supply and the input circuit of the post-electrification electric power supply. The input end of the control circuit is connected to the input circuit of the pre-electrification electric power supply, and the output end is connected to the control end of the electronic switching circuit. The control circuit comprises at least a drive circuit, a regulating circuit of electrification time parameter and an electronic switching circuit. The circuit for controlling electric sequence on multi-channel power provided is equally applicable for electric supply structures which has independent modules, electric supply structures in which the pre-electrification power supply voltage is generated by the conversion of the post-electrification voltage, and power supply modules which have no energy using ends. In addition, the utility model effectively solves the difficult problem of sequence control in a low-voltage high-current circuit.
Description
Technical field
The utility model relates to the control circuit of multiple-way supply power supply, specifically, relates to a kind of circuit that utilizes electronic switch control multiple power supplies electrifying timing sequence.
Background technology
In many fields such as communication and electronic system, Signal and Information Processing, control automatically, space flight and aviation, medical treatment, household electrical appliance, DSP (digital signal processor), CPU (central processing unit), large scale integrated circuit have obtained using widely.Development along with chip, electric power-feeding structure also presents diversified characteristics based on the consideration of aspects such as reliability, cost, and under this development trend, it is comparatively complicated that the sequencing control of many power supplys also becomes, chip not only requires the multiple power supplies power supply, and the electrifying timing sequence of multiple power supplies is had requirement.
At present, the method for control multiple power supplies electrifying timing sequence has three kinds: first kind is that Enable Pin (CNT) control that utilizes power module powers on; Second kind is to control by the time constant of adjusting the power supply soft-start circuit to power on; The third is to utilize special-purpose electrifying timing sequence control chip.
First kind is utilized the Enable Pin (CNT) of power module to control the method that powers on, it is the CNT end that utilizes power module, the CNT of the power module that powers on after going to control with the power supply that powers on earlier, to reach the requirement that powers on, but this method is only applicable to the power module of CNT end, simultaneously, for the supply voltage that powers on earlier be by after the converted electric power-feeding structure of supply voltage that powers on, refer to that just the supply voltage that powers on earlier takes from the changing voltage of the power supply input circuit that powers on after being used to supply with, then can't adopt this method.
Second kind of time constant by adjustment power supply soft-start circuit controlled the method that powers 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 output supply voltage that separates, but because the start-up time and the power-on time of various modules 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, controllability is relatively poor, simultaneously for the supply voltage that powers on earlier be by after the converted power source design of supply voltage that powers on, still can't adopt this method.
The third utilizes the method for special-purpose electrifying timing sequence control chip, be meant the electrifying timing sequence that adopts the special-purpose control chip that powers on to control multiple power supplies, but its present major defect is that selectable chip range is less, be controlled by the development of chip, and cost is higher.
The utility model content
The purpose of this utility model is to provide a kind of circuit of controlling the multiple power supplies electrifying timing sequence, overcomes the limitation and the restriction of existing multiple power supplies power-on time sequence control method, reaches the sequential requirement that multiple power supplies powers on.
The utility model is achieved through the following technical solutions:
A kind of circuit of controlling the multiple power supplies electrifying timing sequence, it is characterized in that, this circuit comprise at least be series at after power on electronic switching circuit in the power supply input circuit, and the control circuit of controlling described electronic switching circuit time-delay break-make, this control circuit formerly power on the power supply input circuit and after power between the power supply input circuit; Wherein, the input of control circuit is connected to the power supply input circuit that formerly powers on, and the output of control circuit is connected to the control end of electronic switching circuit.
Described control circuit comprises power-on time parameter regulation circuit, drive circuit at least, and this power-on time parameter regulation circuit, drive circuit are linked in sequence in formerly powering between power supply input circuit and the electronic switching circuit control end.Described electronic switching circuit is a FET switch circuit.
Power-on time parameter regulation circuit in this control circuit is made up of resistance, electric capacity, and this resistance, electric capacity can be connected, also can forming circuit in parallel.Described drive circuit further comprises level-conversion circuit.This level-conversion circuit can adopt integrated circuit die I CL3232.
The utility model is in the multiple feed circuit, for each road power supply the electrifying timing sequence requirement is arranged, by in the power supply circuits that require that after having, power on an electronic switch being set, utilize the supply voltage that formerly powers on, control the conducting of electronic switch by control circuit, thereby reach the requirement of many power supply electrifyings sequential; For module for power supply structure independently, or the supply voltage that formerly powers on be by after the converted electric power-feeding structure of supply voltage that powers on, and do not have power supply module of Enable Pin etc., all applicable; Owing in control circuit, adopted drive circuit, can require according to the drive level of electronic switch to boost or step-down, thereby reach the purpose that improves the electronic switch driving voltage, make reliably conducting of electronic switch, conduction voltage drop is low, loss is little, has solved low-voltage and high-current power supply sequencing control problem effectively.As seen, the utility model circuit is realized simple and flexible, and cost is low, and required element is few, can effectively save to take up room and applied widely.
Description of drawings
Fig. 1 realizes the schematic diagram of electrifying timing sequence control for the utility model;
Fig. 2 is that the control circuit of the utility model embodiment is formed schematic diagram;
Fig. 3 is the circuit diagram of the utility model embodiment.
Embodiment
For making the purpose of this utility model, technical scheme and effect clearer, be described further below in conjunction with accompanying drawing and specific embodiment.
In the multiple power supplies power supply circuits, for each road power supply the electrifying timing sequence requirement is arranged, in after power on and electronic switching circuit be set in the power supply circuit that requires, utilize the supply voltage that formerly powers on, by the conducting of control circuit control electronic switching circuit, thereby reach the sequential requirement that multiple power supplies powers on.
Referring to shown in Figure 1, Fig. 1 realizes the schematic diagram of electrifying timing sequence control for the utility model.Among the figure, V1 for after the power supply input circuit that powers on, series connection one electronic switch unit in this power circuit; V2 is the power supply input circuit that formerly powers on, direct powering load, the control circuit that is used to control electronic switch time-delay conducting with time-division one tunnel input, after the electronic switching circuit conducting, V1 just powers to load, form V1 for after the power supply input circuit that powers on, guaranteed the requirement that V2 powers on prior to V1 reliably.
Referring to shown in Figure 2, Fig. 2 is that the control circuit of the utility model embodiment is formed schematic diagram.This control circuit comprises power-on time parameter regulation circuit, drive circuit, wherein, the power supply input circuit that formerly powers on is connected to the input of control circuit, promptly be connected to the input of power-on time parameter regulation circuit, the output of power-on time parameter regulation circuit is connected to the input of drive circuit, and the output of drive circuit is connected to the control end of described electronic switching circuit.Here, the circuit design of described control circuit can be determined according to the characteristic of selected electronic switching circuit, for example carry out the design of control circuit according to the conducting voltage of electronic switching circuit, used electronic device characteristics.
Referring to shown in Figure 3, Fig. 3 is the circuit diagram of the utility model embodiment.Present embodiment is to provide multiple power supplies to a kind of dsp chip, wherein, the I/O supply voltage V1 of dsp chip is 3.3V, this chip core (CORE) supply voltage V2 is 1.5V, and require V2 to power on prior to V1, the power supply of veneer is a 1.5V voltage, and this voltage is converted by power module or power supply chip by 3.3V voltage.The metal-oxide-semiconductor field effect transistor (MOSFET) that present embodiment is selected the P raceway groove as after the power on electronic switch of power supply 3.3V path, power-on time parameter regulation circuit is made up of resistance, capacitances in series, also can adopt resistance, electric capacity to compose in parallel to carry out power-on time regulates, drive circuit further comprises a level-conversion circuit, by the gate driving ability of level-conversion circuit raising MOSFET, the ICL3232 that described level-conversion circuit can select for use INTERSIL company to produce.Here, level-conversion circuit is not limited to chip IC L3232, also can be similar positive multiplication of voltage or negative voltage-multiplying circuit, as long as guarantee to reach the drive level of electronic switch, the chip that other level-conversion circuits utilize charge pump multiplication of voltage or employing to have similar functions in addition all can.Its course of work is as follows: provide 3.3V voltage V1 in bus, and conducting between the collector electrode of transistor T 2 and the emitter at this moment, then the input voltage of ICL3232 is 0V, is in off-state between MOSFET grid and the source electrode, MOSFET ends; Simultaneously, voltage transformation module is converted to 1.5V voltage V2 with 3.3V voltage V1, this output voltage is delivered to the kernel of dsp chip as supply voltage, and by 1 charging of 1 pair of capacitor C of resistance R, when capacitance voltage arrives the voltage turn-on threshold value of transistor T 1, the T1 conducting, and then T2 ends, this moment, the ICL3232 input voltage was 3.3V, through the grid of level-conversion circuit output-5.5V to MOSFET, voltage Vgs between MOSFET grid and the source electrode reaches-8.8V, the MOSFET conducting, and 3.3V voltage offers the I/O mouth of DSP.By such control circuit, the I/O voltage V1 of DSP powers on after than core voltage V2, both power-on time parameters can be regulated by the parameter value of resistance R 1 and capacitor C 1, source electrode and the grid voltage of MOSFET are brought up to 8.8V by 3.3V simultaneously, improved the gate driving ability greatly, the MOSFET conducting resistance is little, and loss is low, has solved the electronic switch driving voltage and has crossed low and the problem of conducting fully.
In actual applications, can according to circuit requirement, select concrete electronic switch, control method, to reach the electrifying timing sequence requirement of multiple power supplies according to the schematic diagram of realization electrifying timing sequence control shown in Figure 1.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection range of the present utility model.
Claims (7)
1, a kind of circuit of controlling the multiple power supplies electrifying timing sequence, it is characterized in that, this circuit comprise at least be series at after power on electronic switching circuit in the power supply input circuit, and the control circuit of controlling described electronic switching circuit time-delay break-make, this control circuit formerly power on the power supply input circuit and after power between the power supply input circuit; Wherein, the input of control circuit is connected to the power supply input circuit that formerly powers on, and the output of control circuit is connected to the control end of electronic switching circuit.
2, the circuit of control multiple power supplies electrifying timing sequence according to claim 1, it is characterized in that, described control circuit comprises power-on time parameter regulation circuit, drive circuit at least, and this power-on time parameter regulation circuit, drive circuit are linked in sequence in formerly powering between power supply input circuit and the electronic switching circuit control end.
3, the circuit of control multiple power supplies electrifying timing sequence according to claim 1 is characterized in that, described electronic switching circuit is a FET switch circuit.
4, the circuit of control multiple power supplies electrifying timing sequence according to claim 2 is characterized in that, the circuit that described power-on time parameter regulation circuit is made up of resistance, electric capacity.
5, the circuit of control multiple power supplies electrifying timing sequence according to claim 4 is characterized in that, the circuit that described resistance, electric capacity are formed can be resistance, capacitor seriesing circuit, or resistance, electric capacity parallel circuits.
6, the circuit of control multiple power supplies electrifying timing sequence according to claim 2 is characterized in that, described drive circuit further comprises level-conversion circuit.
7, the circuit of control multiple power supplies electrifying timing sequence according to claim 6 is characterized in that, described level-conversion circuit is integrated circuit die I CL3232.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02205297 CN2565203Y (en) | 2002-03-12 | 2002-03-12 | Circuir for controlling electric sequence on multi-channel power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02205297 CN2565203Y (en) | 2002-03-12 | 2002-03-12 | Circuir for controlling electric sequence on multi-channel power |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2565203Y true CN2565203Y (en) | 2003-08-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02205297 Expired - Lifetime CN2565203Y (en) | 2002-03-12 | 2002-03-12 | Circuir for controlling electric sequence on multi-channel power |
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| CN (1) | CN2565203Y (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101963792A (en) * | 2010-10-29 | 2011-02-02 | 珠海市鑫和电器有限公司 | Time sequence control circuit and control method thereof |
| CN103532533A (en) * | 2012-07-04 | 2014-01-22 | 北京精密机电控制设备研究所 | Power supplying timing sequence management circuit |
| CN104715594A (en) * | 2013-12-12 | 2015-06-17 | 杨岚 | Measured data bluetooth wireless transmission system |
| CN105068596A (en) * | 2015-08-05 | 2015-11-18 | 广东欧珀移动通信有限公司 | Power on sequence adjusting circuit |
| WO2017036099A1 (en) * | 2015-08-31 | 2017-03-09 | 华为技术有限公司 | Switch circuit, power source system, and power supply system |
| CN103365222B (en) * | 2012-03-26 | 2017-04-12 | 中兴通讯股份有限公司 | Power sequence control circuit and integrated circuit |
| CN108847771A (en) * | 2018-06-25 | 2018-11-20 | 郑州云海信息技术有限公司 | Extend the power supply circuit and Expander backboard in PMC chip service life |
| CN112015114A (en) * | 2020-08-17 | 2020-12-01 | 上海集成电路研发中心有限公司 | Automatic control circuit for time sequence of multi-path power supply |
| 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 |
| CN112366679A (en) * | 2020-11-19 | 2021-02-12 | 深圳市永联科技股份有限公司 | Power supply control circuit and method for wireless communication module |
-
2002
- 2002-03-12 CN CN 02205297 patent/CN2565203Y/en not_active Expired - Lifetime
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101963792B (en) * | 2010-10-29 | 2012-08-22 | 珠海市鑫和电器有限公司 | Time sequence control circuit and control method thereof |
| CN101963792A (en) * | 2010-10-29 | 2011-02-02 | 珠海市鑫和电器有限公司 | Time sequence control circuit and control method thereof |
| CN103365222B (en) * | 2012-03-26 | 2017-04-12 | 中兴通讯股份有限公司 | Power sequence control circuit and integrated circuit |
| CN103532533A (en) * | 2012-07-04 | 2014-01-22 | 北京精密机电控制设备研究所 | Power supplying timing sequence management circuit |
| CN103532533B (en) * | 2012-07-04 | 2016-08-10 | 北京精密机电控制设备研究所 | A kind of power supply timing management circuit |
| CN104715594A (en) * | 2013-12-12 | 2015-06-17 | 杨岚 | Measured data bluetooth wireless transmission system |
| CN105068596A (en) * | 2015-08-05 | 2015-11-18 | 广东欧珀移动通信有限公司 | Power on sequence adjusting circuit |
| WO2017036099A1 (en) * | 2015-08-31 | 2017-03-09 | 华为技术有限公司 | Switch circuit, power source system, and power supply system |
| CN108847771A (en) * | 2018-06-25 | 2018-11-20 | 郑州云海信息技术有限公司 | Extend the power supply circuit and Expander backboard in PMC chip service life |
| WO2020000951A1 (en) * | 2018-06-25 | 2020-01-02 | 郑州云海信息技术有限公司 | Power supply circuit for prolonging lifetime of pmc chip, and expander backplane |
| CN112015114A (en) * | 2020-08-17 | 2020-12-01 | 上海集成电路研发中心有限公司 | Automatic control circuit for time sequence of multi-path power supply |
| CN112015114B (en) * | 2020-08-17 | 2021-11-19 | 上海集成电路研发中心有限公司 | Automatic control circuit for time sequence of multi-path power supply |
| 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 |
| CN112366679A (en) * | 2020-11-19 | 2021-02-12 | 深圳市永联科技股份有限公司 | Power supply control circuit and method for wireless communication module |
| CN112366679B (en) * | 2020-11-19 | 2022-11-29 | 深圳市永联科技股份有限公司 | Power supply control circuit and method for wireless communication module |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20120312 Granted publication date: 20030806 |