CN204116848U - A kind of many power control circuits - Google Patents
A kind of many power control circuits Download PDFInfo
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- CN204116848U CN204116848U CN201420594738.0U CN201420594738U CN204116848U CN 204116848 U CN204116848 U CN 204116848U CN 201420594738 U CN201420594738 U CN 201420594738U CN 204116848 U CN204116848 U CN 204116848U
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Abstract
The utility model provides a kind of many power control circuits, comprise multiple power module, connected by Digital Logic gate circuit between two power modules successively powered in multiple power module, the output terminal of the power module first powered in two power modules successively powered in multiple power module is connected to the input end of Digital Logic gate circuit, the output terminal of Digital Logic gate circuit is connected to the enable control signal interface of the power module powered on after in two power modules successively powered in multiple power module, wherein, described multiple power module powers on successively by the sequencing preset.Many power control circuits that the utility model embodiment provides strictly can control the sequencing that powers on of two power modules that there is successively electrifying timing sequence, to ensure to power on power supply by default sequential at multiple power modules of power supply, guarantee that the electronic equipment of being powered by multiple power module is normally worked.
Description
Technical field
The utility model relates to Energy control technical field, particularly the many power control circuits of one.
Background technology
Power supply is by the device that can convert electric energy to of other form, is the source of the service ability of electronic equipment.Power supply is to providing stable output to need certain stable period at the beginning of connection, and the degree of stability that power supply exports in this stable period is difficult to ensure, so power supply needs time delay 100ms-500ms usually from starting to normal power supply.
Electronic equipment needs the power supply being equipped with multiple different voltage usually, if output voltage is the power supply of 3.3v, 2.8v, 1.8v, 1.2v etc., the power supply electrifying sequential of multiple different voltage will meet certain requirements, the design comparison that electrifying timing sequence controls is complicated, generally, the electrifying timing sequence of power supply is the first high rear end, and such as output voltage is that the power supply of 2.5v is powered prior to the power initiation that output voltage is 1.8v.The power supply that the power supply of present electronic equipment is divided into peripheral circuit to power substantially and the power supply of powering for kernel, generally, the electric power output voltage of powering for peripheral circuit is high, require first to power on, the electric power output voltage of powering for kernel is low, after power on, only have multiple power supply in strict accordance with certain sequential electrifying startup, electronic equipment could normal work.
The scheme application of current power supply electrifying sequential control is more is with CPLD (Complex Programmable Logic Device, CPLD) control, the enable control signal of different electrical power is connected on CPLD, controlled the startup electrifying timing sequence of each power supply by the logical program be solidificated in CPLD successively, power on according to the startup of certain sequential to realize multiple power supply.A kind of scheme is also had to be the P.G (Power_Good utilizing upper level power supply, power supply is normal) signal connects the enable control signal of next stage power supply, and the enable control signal starting the first order power supply powered at first directly moves power supply to by pull-up resistor.
There is its deficiency in the scheme of existing power supply electrifying sequential control, specific as follows: the scheme of CPLD power supply electrifying sequential control, need to increase CPLD chip, arrange independently power supply power to CPLD and need to write CPLD program, need in electronic equipment production procedure to add the operation of CPLD program curing, improve cost; Utilize the power good signal of upper level power supply to connect the sequential control scheme of the enable control signal of next stage power supply, Problems existing is that the power supply had does not have P.G signal, cannot realize electric control.
Utility model content
The utility model, for the problems referred to above, proposes a kind of many power control circuits, in order to provide the multi-power supply system of electrifying startup chronologically.
The utility model provides a kind of many power control circuits, comprise multiple power module, connected by Digital Logic gate circuit between two power modules successively powered in multiple power module, the output terminal of the power module first powered in two power modules successively powered in multiple power module is connected to the input end of Digital Logic gate circuit, the output terminal of Digital Logic gate circuit is connected to the enable control signal interface of the power module powered on after in two power modules successively powered in multiple power module, wherein, described multiple power module powers on successively by the sequencing preset.
The utility model beneficial effect is as follows:
The utility model embodiment is by setting data logic gates between two power modules successively powering in the multiple power modules needing electrifying startup chronologically, connect this two power modules, strictly can control the sequencing that powers on of these two power modules, to ensure to power on power supply by default sequential at multiple power modules of power supply, guarantee that the electronic equipment of being powered by multiple power module is normally worked.
Accompanying drawing explanation
Below with reference to accompanying drawings specific embodiment of the utility model is described, wherein:
The schematic diagram of many power control circuits of Fig. 1 for providing in the utility model embodiment;
The schematic diagram of the embodiment one of many power control circuits of Fig. 2 for providing in the utility model embodiment;
The schematic diagram of the embodiment two of many power control circuits of Fig. 3 for providing in the utility model embodiment;
Fig. 4 is open collector circuit diagram.
Embodiment
Clearly understand to make the technical solution of the utility model and advantage, below in conjunction with accompanying drawing, exemplary embodiment of the present utility model is described in more detail, obviously, described embodiment is only a part of embodiment of the present utility model, instead of all embodiments is exhaustive.
The schematic diagram of many power control circuits of Fig. 1 for providing in the utility model embodiment, as shown in Figure 1, this many power control circuit, comprise multiple power module, connected by Digital Logic gate circuit between two power modules successively powered in multiple power module, the output terminal of the power module first powered in two power modules successively powered in multiple power module is connected to the input end of Digital Logic gate circuit, the output terminal of Digital Logic gate circuit is connected to the enable control signal interface of the power module powered on after in certainly middle two power modules successively powered on of multiple power supply mould, wherein, described multiple power module powers on successively by the sequencing preset.
In concrete enforcement, an electronic equipment needs multiple power module to power, and have strict demand to the electrifying timing sequence of this multiple power module, namely multiple power module need power on successively by the sequencing preset, in this multiple power module there is the sequencing powered in any two power modules, for convenience of description, by the power module first powered in two power modules successively powered in multiple power module, referred to as the power module first powered on, the power module powered on after in two power modules that priority in multiple power module is powered on, referred to as after the power module that powers on.As the input that Fig. 1, Vin are the power module first powered on, V1 is the output signal of the power module first powered on, the output signal of the power module that V2 powers on after being.The utility model arranges Digital Logic gate circuit by two power modules successively powered in multiple power module, by the output of the power module first powered on as the input of mathematical logic gate circuit, the output of mathematical logic gate circuit as after the enable control signal input of power module that powers on, namely after the power module formerly powered on starts, control figure logic gates starts, after digital logic gate circuit start, the power module powered on after the enable control signal interface startup of the power module powered on after output is transferred to.
In enforcement, the output terminal of Digital Logic gate circuit can be pulled to high level by pull-up resistor R4.As shown in Figure 1, R4 is the pull-up resistor of mathematical logic gate output, and Vcc is the high level that mathematical logic gate output is pulled to by R4.
Fig. 2 and Fig. 3 is respectively the embodiment one of many power control circuits that the utility model provides and the schematic diagram of embodiment two, and as Fig. 2 and Fig. 3 shows, the Digital Logic gate circuit in the utility model embodiment can be open drain circuit or open collector circuit.
Open collector circuit and open drain circuit are two kinds common in circuit.In digital circuit, be called for short OC door and OD door respectively." collection " in open collector circuit just refers to the collector of triode.In like manner, " leakage " in open drain circuit refers to the drain electrode of metal-oxide layer semiconductcor field effect transistor.
Typical open collector circuit as shown in Figure 4, when in circuit right side transistor collector what do not connect time, the triode in left side realizes inverting function, namely triode cut-off on the left of during left routine input low level, power supply VCC is added to right side transistor base by resistance R3, right side triode ON, right side output terminal is connected to ground, output low level.Open collector cannot export high level, adds that pull-up resistor can export high level at output terminal, and therefore open collector exports and can be used as level conversion, is pulled to different voltage, realizes different level conversion by pull-up resistor.Collector in triode open-circuit, base stage, emitter correspond respectively to drain electrode in open drain circuit, grid, source electrode.In like manner, the drain circuit of metal-oxide layer semiconductcor field effect transistor can be known by inference.
As shown in Figure 1, in enforcement, can series resistor R1 between the output terminal of the power module first powered in two power modules successively powered in multiple power module and mathematical logic gate circuit.
In concrete enforcement, series resistor R1 between the output terminal of the power module formerly powered on and mathematical logic gate circuit, increases resistance R1, increases the resistance of place circuit, thus changes the size of electric current, burns the element of subsequent conditioning circuit to prevent overcurrent.
In enforcement, resistance R1 can be a kilohm level resistance.
In concrete enforcement, in order to obtain better effect, the resistance of kilohm level can be adopted as resistance R1.
In enforcement, many power control circuits can be applied to the single card microcomputer that power supply powers in order.
In concrete enforcement, key components on single card microcomputer, as CPU (Center Processing Unit, CPU (central processing unit)) etc., the power module of multiple different voltage is needed to power, and require that the power module of this multiple different voltage powers on successively according to the order of regulation, could normally work, so, this many power control circuits the utility model embodiment provided are applied to the single card microcomputer needing power supply to power in order, the electric sequence of multiple power module can be controlled preferably, the normal power supply of bonding trigger.
The utility model embodiment is by setting data logic gates between two power modules successively powering in the multiple power modules needing electrifying startup chronologically, connect this two power modules, strictly can control the sequencing that powers on of these two power modules, to ensure to power on power supply by default sequential at multiple power modules of power supply, guarantee that the electronic equipment of being powered by multiple power module is normally worked.
Above embodiment only in order to the technical solution of the utility model to be described, but not is limited.Therefore, when not deviating from spirit of the present utility model and essence thereof, those skilled in the art can make various change, replacement and modification.Obviously, but these change, replace and modification all should be covered by within the protection domain of the utility model claim.
Claims (6)
1. power control circuit more than a kind, it is characterized in that, comprise multiple power module, connected by Digital Logic gate circuit between two power modules successively powered in multiple power module, the output terminal of the power module first powered in two power modules successively powered in multiple power module is connected to the input end of Digital Logic gate circuit, the output terminal of Digital Logic gate circuit is connected to the enable control signal interface of the power module powered on after in two power modules successively powered in multiple power module, wherein, described multiple power module powers on successively by the sequencing preset.
2. many power control circuits as claimed in claim 1, is characterized in that, the output terminal of Digital Logic gate circuit is pulled to high level by pull-up resistor R4.
3. many power control circuits as claimed in claim 1 or 2, is characterized in that, described Digital Logic gate circuit is open drain circuit or open collector circuit.
4. many power control circuits as claimed in claim 1 or 2, is characterized in that, series resistor R1 between the output terminal of the power module first powered in two power modules successively powered in multiple power module and open drain circuit.
5. many power control circuits as claimed in claim 3, is characterized in that, resistance R1 is a kilohm level resistance.
6. many power control circuits as claimed in claim 1 or 2, is characterized in that, many power control circuits are applied to the single card microcomputer that power supply powers in order.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420594738.0U CN204116848U (en) | 2014-10-15 | 2014-10-15 | A kind of many power control circuits |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420594738.0U CN204116848U (en) | 2014-10-15 | 2014-10-15 | A kind of many power control circuits |
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| Publication Number | Publication Date |
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| CN204116848U true CN204116848U (en) | 2015-01-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420594738.0U Expired - Lifetime CN204116848U (en) | 2014-10-15 | 2014-10-15 | A kind of many power control circuits |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107991981A (en) * | 2017-12-05 | 2018-05-04 | 迈普通信技术股份有限公司 | A kind of service board and electronic equipment |
| CN114326506A (en) * | 2021-12-29 | 2022-04-12 | 深圳市华星光电半导体显示技术有限公司 | Power-on and power-off control circuit, control method and power supply system |
| CN114661130A (en) * | 2022-03-09 | 2022-06-24 | 湖南智领通信科技有限公司 | Power supply control circuit of CPU module and design method |
-
2014
- 2014-10-15 CN CN201420594738.0U patent/CN204116848U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107991981A (en) * | 2017-12-05 | 2018-05-04 | 迈普通信技术股份有限公司 | A kind of service board and electronic equipment |
| CN107991981B (en) * | 2017-12-05 | 2019-09-20 | 迈普通信技术股份有限公司 | A kind of service board and electronic equipment |
| CN114326506A (en) * | 2021-12-29 | 2022-04-12 | 深圳市华星光电半导体显示技术有限公司 | Power-on and power-off control circuit, control method and power supply system |
| CN114661130A (en) * | 2022-03-09 | 2022-06-24 | 湖南智领通信科技有限公司 | Power supply control circuit of CPU module and design method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20150121 |