CN209948725U - Power supply control circuit - Google Patents
Power supply control circuit Download PDFInfo
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- CN209948725U CN209948725U CN201920796839.9U CN201920796839U CN209948725U CN 209948725 U CN209948725 U CN 209948725U CN 201920796839 U CN201920796839 U CN 201920796839U CN 209948725 U CN209948725 U CN 209948725U
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- power supply
- mos tube
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Abstract
The utility model relates to the technical field of power control, in particular to a power control circuit, which comprises a trigger, a first switch and a second switch; the trigger comprises a pin RST # and a trigger end, the pin RST # is connected with the first switch, the trigger end is connected with the second switch, and the trigger is connected with the power supply and the standby battery; the first switch is a mos tube and is used for controlling the trigger of the trigger, the G pole of the switch mos tube is connected with the electronic equipment, the S pole of the switch mos tube is grounded, and the D pole of the switch mos tube is connected with the standby battery; the second switch is located stand-by battery with between the electronic equipment, the second switch includes the control end, the control end with the trigger end is connected, the utility model discloses can cut off the power supply route between stand-by battery and the electronic equipment, let stand-by battery only self power consumption to increase stand-by battery's power supply life.
Description
Technical Field
The utility model relates to a power control technical field especially relates to a power control circuit.
Background
The supply of power is very important to electronic devices, and even if the power is not supplied, the power is not enough. Therefore, electronic devices of higher importance are generally provided with a backup battery in addition to the commercial power, i.e. the power provided by the power supply, so that the power can be provided immediately when an unexpected interruption of the commercial power occurs.
The electronic equipment products are different in time from production to selling, may be sold to consumers quickly, may be sold for a long time, when the stock is stored for a long time, the electric quantity of the standby battery is too low, and cannot play the original standby role, and even if the switch of the electronic equipment is switched off before leaving the factory, the standby battery can still continuously supply the static current, and although the static current is very small, the electric quantity of the standby battery can still be consumed.
SUMMERY OF THE UTILITY MODEL
To the technical problem, the utility model provides a can cut off the power supply route between reserve battery and the electronic equipment, reduce reserve battery's loss, increase reserve battery power supply life's power control circuit.
In order to solve the technical problem, the utility model provides a concrete scheme as follows: a power control circuit is applied among a standby battery, a power supply and electronic equipment and comprises a trigger, a first switch and a second switch;
the trigger comprises a pin RST # and a trigger end, the pin RST # is connected with the first switch, the trigger end is connected with the second switch, and the trigger is connected with the power supply and the standby battery;
the first switch is a mos tube and is used for controlling the trigger of the trigger, the G pole of the switch mos tube is connected with the electronic equipment, the S pole of the switch mos tube is grounded, and the D pole of the switch mos tube is connected with the standby battery;
the second switch is arranged between the standby battery and the electronic equipment and comprises a control end, and the control end is connected with the trigger end and is used for being triggered by the trigger to control the on-off of the standby battery and the electronic equipment.
Optionally, a resistor R1 is further connected between the D pole of the mos tube and the backup battery, a capacitor C is further connected between the D pole of the mos tube and the S pole of the mos tube, and the capacitor C can protect the mos tube to a certain extent and has a voltage-sharing effect.
Optionally, the G pole of the mos tube is further connected with a resistor R2, and the other end of the resistor R2 is grounded, so that the steepness of the front and rear edges of the control pulse can be changed and oscillation can be prevented.
Optionally, a resistor R3 is disposed between the trigger and the second switch, the other end of the resistor R3 is grounded, and the resistor R3 plays a role in limiting current.
Optionally, the mos tube is a p-channel mos tube.
Compared with the prior art, the beneficial effects of the utility model reside in that: the utility model discloses can cut off the power supply route between reserve battery and the electronic equipment, let reserve battery only have self power consumption to increase reserve battery's power supply life, if resume the power supply route between reserve battery and the electronic equipment, only need insert the power supply can.
Drawings
Fig. 1 is a specific circuit diagram of the present invention.
Detailed Description
In order to explain the technical solution of the present invention in detail, the following will combine the drawings of the embodiments of the present invention to perform clear and complete description on the technical solution of the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments, which can be obtained by a person skilled in the art without any inventive work based on the described embodiments of the present invention, belong to the protection scope of the present invention.
In some embodiments, as shown in fig. 1, there is provided a power control circuit applied between a backup battery, a power supply and an electronic device, the power control circuit including a trigger, a first switch and a second switch;
the trigger comprises a pin RST # and a trigger end, the pin RST # is connected with the first switch, the trigger end is connected with the second switch, and the trigger is connected with the power supply and the standby battery;
the first switch is a mos tube and is used for controlling the trigger of the trigger, the G pole of the mos tube is connected with the electronic equipment, the S pole of the mos tube is grounded, and the D pole of the mos tube is connected with the standby battery;
the second switch is arranged between the standby battery and the electronic equipment and comprises a control end, and the control end is connected with the trigger end and is used for controlling the on-off of the standby battery and the electronic equipment under the trigger of the trigger.
Specifically, before leaving the factory, the internal system of control electronic equipment outputs the high level and makes the mos pipe conduct, the trigger end of trigger this moment outputs the low level, the switch disconnection, cut off the power supply route between reserve battery and the electronic equipment promptly, when needing to resume the power supply state between reserve battery and the electronic equipment, only need insert the power supply on the electronic equipment, make the trigger end of trigger output the high level, the switch closure, resume the power supply state between reserve battery and the electronic equipment, when needing to cut off the power supply route between reserve battery and the electronic equipment once more, need pull out earlier behind the power supply, the internal system of controlling electronic equipment again outputs the high level can.
In some embodiments, a resistor R1 is further connected between the D pole of the mos tube and the backup battery, and a capacitor C is further connected between the D pole and the S pole of the mos tube, and the capacitor C can play a certain protection role on the mos tube and has a voltage-sharing function. The G pole of the mos tube is also connected with a resistor R2, and the other end of the resistor R2 is grounded, so that the gradient of the front edge and the rear edge of the control pulse can be changed, and oscillation can be prevented. A resistor R3 is arranged between the trigger and the second switch, the other end of the resistor R3 is grounded, and the resistor R3 plays a role in current limiting. The mos tube is a p-channel mos tube.
It should be noted that the backup battery is not limited to a model or specification as long as it can provide power, and may be, for example, a general battery, a backup power supply, or other components, modules, or devices that can provide backup power. Similarly, the electronic device may be, but is not limited to, a communication device, a wearable device, a notebook computer, a desktop computer, a server, an earphone device, and the like, and it should be understood by those skilled in the art that the electronic device in this disclosure is any electronic device that requires a power control circuit.
The foregoing is merely illustrative and explanatory of the structure of the present invention, which is described in more detail and with greater particularity, and is not to be construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, many variations and modifications are possible without departing from the inventive concept, and such obvious alternatives fall within the scope of the invention.
Claims (5)
1. A power control circuit is applied among a standby battery, a power supply and electronic equipment, and is characterized in that:
the power supply control circuit comprises a trigger, a first switch and a second switch;
the trigger comprises a pin RST # and a trigger end, the pin RST # is connected with the first switch, the trigger end is connected with the second switch, and the trigger is connected with the power supply and the standby battery;
the first switch is a mos tube and is used for controlling the trigger of the trigger, the G pole of the switch mos tube is connected with the electronic equipment, the S pole of the switch mos tube is grounded, and the D pole of the switch mos tube is connected with the standby battery;
the second switch is arranged between the standby battery and the electronic equipment and comprises a control end, and the control end is connected with the trigger end and is used for being triggered by the trigger to control the on-off of the standby battery and the electronic equipment.
2. The power supply control circuit according to claim 1, wherein a resistor R1 is further connected between the D pole of the mos tube and the backup battery, and a capacitor C is further connected between the D pole and the S pole of the mos tube.
3. The power control circuit as claimed in claim 2, wherein a resistor R2 is further connected to the G pole of the mos transistor, and the other end of the resistor R2 is grounded.
4. The power control circuit as claimed in claim 3, wherein a resistor R3 is provided between the trigger and the second switch, and the other end of the resistor R3 is connected to ground.
5. The power control circuit of claim 1, wherein the mos transistor is a p-channel mos transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920796839.9U CN209948725U (en) | 2019-05-30 | 2019-05-30 | Power supply control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920796839.9U CN209948725U (en) | 2019-05-30 | 2019-05-30 | Power supply control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209948725U true CN209948725U (en) | 2020-01-14 |
Family
ID=69134724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920796839.9U Active CN209948725U (en) | 2019-05-30 | 2019-05-30 | Power supply control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209948725U (en) |
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2019
- 2019-05-30 CN CN201920796839.9U patent/CN209948725U/en active Active
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