CN202663145U - Battery wake-up control circuit - Google Patents
Battery wake-up control circuit Download PDFInfo
- Publication number
- CN202663145U CN202663145U CN 201220282037 CN201220282037U CN202663145U CN 202663145 U CN202663145 U CN 202663145U CN 201220282037 CN201220282037 CN 201220282037 CN 201220282037 U CN201220282037 U CN 201220282037U CN 202663145 U CN202663145 U CN 202663145U
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- CN
- China
- Prior art keywords
- control circuit
- battery
- wake
- inductor
- semiconductor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Direct Current Feeding And Distribution (AREA)
Abstract
The utility model discloses a battery wake-up control circuit. The battery wake-up control circuit comprises a battery JBAT1, a metal oxide semiconductor (MOS) tube N1 and a peripheral control circuit (1), wherein the peripheral control circuit (1) is connected with the gate electrode of the MOS tube N1; the drain electrode of the MOS tube N1 is connected with the anode of a diode VD1; the cathode of the diode VD1 is connected with the output end Vout of the wake-up control circuit. The battery wake-up control circuit also comprises an inductor L1 and a resistor R7, wherein one end of each of the inductor L1 and the resistor R7 is connected with the source electrode of the MOS tube N1; and the other ends of the inductor L1 and the resistor R7 are connected with the battery JBAT1. By the principle of large impedance under instantaneous large current of the inductor, the inductor L1 and the resistor R7 which are connected in parallel are arranged between the MOS tube and the battery, so that the MOS tube is effectively prevented from being burnt out due to the instantaneous large current produced when a button is pressed to wake up the battery, failure rate of the battery wake-up control circuit is reduced, and reliability of the battery wake-up control circuit is increased.
Description
Technical field
The utility model relates to a kind of battery wake-up control circuit.
Background technology
Existing a kind of battery wake-up control circuit, be used for after main power source can't be to system power supply will battery for subsequent use waking up with to system power supply by button, comprise battery, metal-oxide-semiconductor and peripheral control circuit, the peripheral control circuit is connected with the grid (GATE) of metal-oxide-semiconductor, battery is connected with the source electrode (SOURCE) of metal-oxide-semiconductor, and the drain electrode of metal-oxide-semiconductor (DRAIN) connects the output of wake-up control circuit by a diode; The problem that the battery wake-up control circuit of this structure exists is: the switch key in the peripheral control circuit is pressed, and the instantaneous large-current that produces when circuit is connected burns out metal-oxide-semiconductor easily.
The utility model content
Technical problem to be solved in the utility model is: provide a kind of button to wake the battery wake-up control circuit that Shi Buhui burns out metal-oxide-semiconductor up.
The technical scheme in the invention for solving the above technical problem is: a kind of battery wake-up control circuit, comprise battery JBAT1, metal-oxide-semiconductor N1 and peripheral control circuit, the peripheral control circuit is connected with the grid of metal-oxide-semiconductor N1, the anodic bonding of the drain electrode of metal-oxide-semiconductor N1 and diode VD1, the negative electrode of diode VD1 is connected with the output end vo ut of wake-up control circuit, also comprise inductance L 1 and resistance R 7, the end that inductance L 1 is connected with resistance R all is connected with the source electrode of metal-oxide-semiconductor N1, and the other end that inductance L 1 is connected with resistance R all is connected with battery JBAT1.
Compared with prior art, the utility model has the advantage of: utilize inductance large principle of impedance under instantaneous large-current, between metal-oxide-semiconductor and battery, increase inductance L 1 and resistance R 7 in parallel, can prevent effectively that the instantaneous large-current that produces when button wakes up from burning out metal-oxide-semiconductor, reduce the failure rate of product, improve the reliability of product.
Description of drawings
Figure is circuit theory diagrams of the present utility model.
Among the figure: 1, peripheral control circuit.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is further described.
As shown in the figure, the utility model battery wake-up control circuit comprises battery JBAT1, metal-oxide-semiconductor N1 and peripheral control circuit 1, and peripheral control circuit 1 is connected with the grid (GATE) of metal-oxide-semiconductor N1, peripheral control circuit 1 is routine techniques of the prior art, does not repeat them here; The anodic bonding of the drain electrode of metal-oxide-semiconductor N1 (DRAIN) and diode VD1, the negative electrode of diode VD1 is connected with the output end vo ut of wake-up control circuit, also comprise inductance L 1 and resistance R 7, the end that inductance L 1 is connected with resistance R all is connected with the source electrode (SOURCE) of metal-oxide-semiconductor N1, and the other end that inductance L 1 is connected with resistance R all is connected with battery JBAT1.
When main power source can't be given system power supply, press the switch key S1 in the peripheral control circuit 1, metal-oxide-semiconductor N1 opens, and battery JBAT1 is to system power supply.
Claims (1)
1. battery wake-up control circuit, comprise battery JBAT1, metal-oxide-semiconductor N1 and peripheral control circuit (1), peripheral control circuit (1) is connected with the grid of metal-oxide-semiconductor N1, the anodic bonding of the drain electrode of metal-oxide-semiconductor N1 and diode VD1, the negative electrode of diode VD1 is connected with the output end vo ut of wake-up control circuit, it is characterized in that: also comprise inductance L 1 and resistance R 7, the end that inductance L 1 is connected with resistance R all is connected with the source electrode of metal-oxide-semiconductor N1, and the other end that inductance L 1 is connected with resistance R all is connected with battery JBAT1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220282037 CN202663145U (en) | 2012-06-15 | 2012-06-15 | Battery wake-up control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220282037 CN202663145U (en) | 2012-06-15 | 2012-06-15 | Battery wake-up control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202663145U true CN202663145U (en) | 2013-01-09 |
Family
ID=47458024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220282037 Expired - Lifetime CN202663145U (en) | 2012-06-15 | 2012-06-15 | Battery wake-up control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202663145U (en) |
-
2012
- 2012-06-15 CN CN 201220282037 patent/CN202663145U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 315191 Yinzhou Industrial Park, Zhejiang, Ningbo, Yinzhou District, Ningbo Patentee after: NINGBO SANXING MEDICAL ELECTRIC CO., LTD. Address before: 315191 Zhejiang city of Ningbo province Jiangshan town Yinzhou District Mingguang Road No. 1166 Patentee before: Ningbo Sanxing Electric Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20130109 |
|
| CX01 | Expiry of patent term |