CN201733130U - Power supply management module circuit - Google Patents
Power supply management module circuit Download PDFInfo
- Publication number
- CN201733130U CN201733130U CN2010202632060U CN201020263206U CN201733130U CN 201733130 U CN201733130 U CN 201733130U CN 2010202632060 U CN2010202632060 U CN 2010202632060U CN 201020263206 U CN201020263206 U CN 201020263206U CN 201733130 U CN201733130 U CN 201733130U
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- China
- Prior art keywords
- resistance
- diode
- voltage input
- negative pole
- input end
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- Expired - Lifetime
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- 230000005669 field effect Effects 0.000 claims abstract description 9
- 239000003990 capacitor Substances 0.000 claims description 3
- 230000001939 inductive effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000002618 waking Effects 0.000 description 1
Abstract
The utility model relates to a power supply management module circuit which comprises a field-effect tube, a comparator, a triode, a first diode, a second diode, a battery, a coil induced voltage input end, and a power supply voltage input end; the coil induced voltage input end is connected with the positive pole of the first diode; the negative pole of the first diode is connected with the negative pole of the second diode; the power supply voltage input end is connected between the negative pole of the first diode and the negative pole of the second diode; and the negative pole of the battery is grounded. Compared with the prior art, the power supply management module circuit has the advantages of simpler design, lower cost and the like.
Description
Technical field
The utility model relates to a kind of electric power management circuit, especially relates to a kind of power management module circuit.
Background technology
The range of application of power management chip is very extensive, and the development power management chip is significant for improving the complete machine performance, and is directly related with the demand of system to the selection of power management chip, and the development of digital power managing chip also need be crossed over the cost difficulty.
The world today, people's life has been also to be unable to do without electronic equipment a moment.Power management chip is shouldered the responsibility of conversion, distribution, detection and other electric energy managements to electric energy in electronic apparatus system.Power management chip is indispensable for electronic system, and the quality of its performance has direct influence to machine performance.
Be applied in the power-supply management system more complicated all in the fault detector at present, cost is higher.
Summary of the invention
The purpose of this utility model is exactly to provide a kind of power management module circuit fairly simple, that cost is lower that designs for the defective that overcomes above-mentioned prior art existence.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of power management module circuit, it is characterized in that, comprise field effect transistor, comparator, triode, first diode, second diode, battery, coil-induced voltage input end, supply power voltage input, described coil-induced voltage input end is connected with the positive pole of first diode, the negative pole of described first diode is connected with the negative pole of second diode, described supply power voltage input is connected between the negative pole of the negative pole of first diode and second diode, the minus earth of described battery;
Described field effect transistor comprises source electrode, drain electrode, grid, described source electrode is connected with the positive pole of battery, described drain electrode is connected with the positive pole of second diode, described grid is connected with coil-induced voltage input end, is in series with resistance R 22, resistance R 36, resistance R 37 between described grid and the coil-induced voltage input end successively;
Described comparator is provided with input anode, input negative terminal, VCC end, output, earth terminal, described input is just terminating between resistance R 36, the resistance R 37, described input negative terminal is by resistance R 31 ground connection, be connected with anode by resistance R 32 simultaneously, described VCC end is connected with anode, described output is connected with anode by resistance R 33, is connected between resistance R 22, the resistance R 36 described earth terminal ground connection simultaneously;
Described triode is provided with base stage, collector electrode, emitter, described base stage is connected between resistance R 22, the resistance R 36 by capacitor C 31, by resistance R 34 ground connection, described collector electrode is connected with main control chip simultaneously, is connected with the supply power voltage input by resistance R 35 simultaneously.
The input voltage of described supply power voltage input is 3.3V.
Compared with prior art, the utlity model has and to realize that fault detector automaticallyes switch between powered battery and induction power taking, and can send low pulse signal during power taking switching to induction, wake main control chip up, design fairly simple, cost is lower.
Description of drawings
Fig. 1 is a circuit diagram of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is elaborated.
Embodiment
As shown in Figure 1, a kind of power management module circuit, comprise field effect transistor U5, comparator U3, triode VT5, the first diode D1, the second diode D2, battery BT1, coil-induced voltage input end, supply power voltage input, described coil-induced voltage input end is connected with the positive pole of the first diode D1, the negative pole of the described first diode D1 is connected with the negative pole of the second diode D2, described supply power voltage input is connected between the negative pole of the negative pole of the first diode D1 and the second diode D2, the minus earth of described battery BT1;
Described field effect transistor U5 comprises source S, drain D, grid G, described source S is connected with the positive pole of battery, described drain D is connected with the positive pole of the second diode D2, described grid G is connected with coil-induced voltage input end, is in series with resistance R 22, resistance R 36, resistance R 37 between described grid G and the coil-induced voltage input end successively;
Described comparator U3 is provided with input anode IN+, input negative terminal IN-, VCC end, output OUT, earth terminal GND, described input anode IN+ is connected between resistance R 36, the resistance R 37, described input negative terminal IN-is by resistance R 31 ground connection, be connected with the positive pole of battery by resistance R 32 simultaneously, described VCC end is connected with the positive pole of battery, described output OUT is connected with anode by resistance R 33, is connected between resistance R 22, the resistance R 36 described earth terminal GND ground connection simultaneously;
Described triode is provided with base stage, collector electrode, emitter, described base stage is connected between resistance R 22, the resistance R 36 by capacitor C 31, by resistance R 34 ground connection, described collector electrode is connected with main control chip simultaneously, is connected with the supply power voltage input by resistance R 35 simultaneously.
When bus current is very little, when coil-induced voltage input end voltage VDD_IN was lower than cell voltage VBAT, the output of comparator U3 was a low level.P-channel field-effect transistor (PEFT) pipe U5 conducting, battery BT1 power supply.When bus current increases, when coil-induced voltage input end voltage VDD_IN was higher than a certain value, the output of comparator U3 uprised.Field effect transistor U5 by, battery BT1 stops power supply.Simultaneously, in the engineering that the output of U3 uprises, can produce a high level pulse, make triode VT5 short time conducting in the base stage of triode VT5.Thereby the collector electrode at VT5 produces a low level pulse, is used for waking up main control chip.
Claims (2)
1. power management module circuit, it is characterized in that, comprise field effect transistor, comparator, triode, first diode, second diode, battery, coil-induced voltage input end, supply power voltage input, described coil-induced voltage input end is connected with the positive pole of first diode, the negative pole of described first diode is connected with the negative pole of second diode, described supply power voltage input is connected between the negative pole of the negative pole of first diode and second diode, the minus earth of described battery;
Described field effect transistor comprises source electrode, drain electrode, grid, described source electrode is connected with the positive pole of battery, described drain electrode is connected with the positive pole of second diode, described grid is connected with coil-induced voltage input end, is in series with resistance R 22, resistance R 36, resistance R 37 between described grid and the coil-induced voltage input end successively;
Described comparator is provided with input anode, input negative terminal, VCC end, output, earth terminal, described input is just terminating between resistance R 36, the resistance R 37, described input negative terminal is by resistance R 31 ground connection, be connected with anode by resistance R 32 simultaneously, described VCC end is connected with anode, described output is connected with anode by resistance R 33, is connected between resistance R 22, the resistance R 36 described earth terminal ground connection simultaneously;
Described triode is provided with base stage, collector electrode, emitter, described base stage is connected between resistance R 22, the resistance R 36 by capacitor C 31, by resistance R 34 ground connection, described collector electrode is connected with main control chip simultaneously, is connected with the supply power voltage input by resistance R 35 simultaneously.
2. a kind of power management module circuit according to claim 1 is characterized in that the input voltage of described supply power voltage input is 3.3V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202632060U CN201733130U (en) | 2010-07-19 | 2010-07-19 | Power supply management module circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202632060U CN201733130U (en) | 2010-07-19 | 2010-07-19 | Power supply management module circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201733130U true CN201733130U (en) | 2011-02-02 |
Family
ID=43524286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202632060U Expired - Lifetime CN201733130U (en) | 2010-07-19 | 2010-07-19 | Power supply management module circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201733130U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102340170A (en) * | 2010-07-19 | 2012-02-01 | 上海资和通信科技有限公司 | Power supply management system for fault indicator |
| CN102624072A (en) * | 2012-03-28 | 2012-08-01 | 安徽天堂唯高塑业科技有限公司 | Circuit of multipurpose mobile power supply |
-
2010
- 2010-07-19 CN CN2010202632060U patent/CN201733130U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102340170A (en) * | 2010-07-19 | 2012-02-01 | 上海资和通信科技有限公司 | Power supply management system for fault indicator |
| CN102340170B (en) * | 2010-07-19 | 2014-01-29 | 国网上海市电力公司 | Power supply management system for fault indicator |
| CN102624072A (en) * | 2012-03-28 | 2012-08-01 | 安徽天堂唯高塑业科技有限公司 | Circuit of multipurpose mobile power supply |
| CN102624072B (en) * | 2012-03-28 | 2014-06-18 | 安徽天堂唯高塑业科技有限公司 | Circuit of multipurpose mobile power supply |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI ELECTRIC POWER CORP. |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20110628 Address after: 201112 No. 1, No. 3585, three Lu Lu, 1, Shanghai, Minhang District Co-patentee after: Shanghai Electric Power Corporation Patentee after: Shanghai Zihe Communication Technology Co., Ltd. Address before: 201112 No. 1, No. 3585, three Lu Lu, 1, Shanghai, Minhang District Patentee before: Shanghai Zihe Communication Technology Co., Ltd. |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20110202 Effective date of abandoning: 20140129 |
|
| RGAV | Abandon patent right to avoid regrant |