CN211046899U

CN211046899U - Low-power consumption controllable switch circuit

Info

Publication number: CN211046899U
Application number: CN202020251477.8U
Authority: CN
Inventors: 马胤刚; 蒋辉; 张晓琳
Original assignee: Shenyang Seic Information Technology Co ltd
Current assignee: Shenyang Seic Information Technology Co ltd
Priority date: 2020-03-04
Filing date: 2020-03-04
Publication date: 2020-07-17
Anticipated expiration: 2030-03-04

Abstract

The utility model discloses a controllable switch circuit of low-power consumption, include: 4.2V lithium battery P1, resistance RP3, resistance RP4, resistance RP5, resistance RP6, electric capacity CP7, tantalum electric capacity EP7, tantalum electric capacity EP8, tantalum electric capacity EP9, zener diode DP1, triode QP1 and field effect transistor QP 2. The low-power consumption controllable switch circuit can complete the switching function of the circuit by controlling the state of the field effect transistor, and simultaneously can realize the basic zero power consumption in the circuit closing state and the ultra-low power consumption in the circuit conducting state.

Description

Low-power consumption controllable switch circuit

Technical Field

The utility model relates to a circuit structure provides a controllable switch circuit of low-power consumption very much.

Background

Along with the increasingly obvious portability requirement of terminal equipment in the current market, the size requirement of the terminal equipment tends to be more and more miniaturized and integrated, and meanwhile, the requirement of low power consumption is particularly remarkable.

Therefore, it is a problem to be solved to develop a switching circuit with low power consumption to reduce the power consumption of the device.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a controllable switch circuit of low-power consumption to solve the problem that the equipment consumption is high among the prior art.

The utility model provides a technical scheme is: a low power consumption controllable switching circuit comprising: 4.2V lithium battery P1, resistor RP3, resistor RP4, resistor RP5, resistor RP6, capacitor CP7, tantalum capacitor EP7, tantalum capacitor EP8, tantalum capacitor EP9, zener diode DP1, triode QP1 and field effect transistor QP2, the positive electrode input end of the 4.2V lithium battery P1 is connected with the source electrode of a field effect transistor QP2, the negative electrode is grounded, a tantalum capacitor EP7 and a capacitor CP7 are connected between the source electrode of the field effect transistor QP2 and the ground in parallel, the source electrode of the field effect transistor QP2 is connected to the collector electrode of a triode QP1 through a resistor RP5, the grid electrode of the field effect transistor QP2 is connected to the collector electrode of a triode QP1 through a resistor RP6, the emitter electrode of the triode QP1 is grounded, the base electrode of the triode QP1 is connected to the ground through a resistor RP4, the base electrode of the triode QP1 is connected to a control terminal POWER _ ON through RP3, a zener diode DP1, a tantalum capacitor EP8 and an tantalum capacitor EP9 are connected between the drain electrode of the field effect transistor QP.

The utility model provides a controllable switch circuit of low-POWER consumption, the break-make of the steerable POWER supply of level through control end POWER _ ON has played the switching circuit effect, can supply POWER and close the POWER supply when needing dormancy at partial functional module during operation.

The utility model provides a controllable switch circuit of low-POWER consumption can close the POWER supply of partial module through control end POWER _ ON voltage according to the demand, simultaneously, can reduce the consumption when this partial module needs dormancy to be close zero POWER consumption, even when needing this partial module normal operating, this switch circuit also is ultra-low POWER consumption.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and embodiments:

fig. 1 is a schematic structural diagram of a low power consumption controllable switch circuit provided by the present invention.

Detailed Description

As shown in fig. 1, the utility model provides a controllable switch circuit of low-power consumption, include: 4.2V lithium battery P1, resistor RP3, resistor RP4, resistor RP5, resistor RP6, capacitor CP7, tantalum capacitor EP7, tantalum capacitor EP8, tantalum capacitor EP9, zener diode DP1, triode QP1 and field effect transistor QP2, the positive electrode input end of the 4.2V lithium battery P1 is connected with the source electrode of a field effect transistor QP2, the negative electrode is grounded, a tantalum capacitor EP7 and a capacitor CP7 are connected between the source electrode of the field effect transistor QP2 and the ground in parallel, the source electrode of the field effect transistor QP2 is connected to the collector electrode of a triode QP1 through a resistor RP5, the grid electrode of the field effect transistor QP2 is connected to the collector electrode of a triode QP1 through a resistor RP6, the emitter electrode of the triode QP1 is grounded, the base electrode of the triode QP1 is connected to the ground through a resistor RP4, the base electrode of the triode QP1 is connected to a control terminal POWER _ ON through RP3, a zener diode DP1, a tantalum capacitor EP8 and an tantalum capacitor EP9 are connected between the drain electrode of the field effect transistor QP.

The working principle of the low-power consumption controllable switching circuit is as follows: when the control terminal POWER _ ON is set to be at a low level, the base of the triode QP1 is at a low level, the triode QP1 is in a cut-off state, the gate and the source of the field-effect transistor QP2 are at a high level, the field-effect transistor QP2 is in a cut-off state, and the drain output voltage of the field-effect transistor QP2 is 0V. When the control end POWER _ ON is set to be at a high level, the base of the triode QP1 is at a high level, the triode QP1 is in a conducting state, the collector of the triode QP1 is at a low level, the grid of the field-effect tube QP2 is at a low level, the source of the field-effect tube QP2 is at a high level, the field-effect tube QP2 is at a conducting state, and the drain output voltage of the field-effect tube QP2 is 4.2V, so that the switching function of the circuit is realized by controlling the level of the control end POWER _ ON, the basic zero POWER consumption can be realized in the circuit closing state, and the ultra-low POWER consumption is realized in the circuit conducting state.

Claims

1. A low power consumption controllable switching circuit, comprising: 4.2V lithium battery P1, resistor RP3, resistor RP4, resistor RP5, resistor RP6, capacitor CP7, tantalum capacitor EP7, tantalum capacitor EP8, tantalum capacitor EP9, zener diode DP1, triode QP1 and field effect transistor QP2, the positive electrode input end of the 4.2V lithium battery P1 is connected with the source electrode of a field effect transistor QP2, the negative electrode is grounded, a tantalum capacitor EP7 and a capacitor CP7 are connected between the source electrode of the field effect transistor QP2 and the ground in parallel, the source electrode of the field effect transistor QP2 is connected to the collector electrode of a triode QP1 through a resistor RP5, the grid electrode of the field effect transistor QP2 is connected to the collector electrode of a triode QP1 through a resistor RP6, the emitter electrode of the triode QP1 is grounded, the base electrode of the triode QP1 is connected to the ground through a resistor RP4, the base electrode of the triode QP1 is connected to a control terminal POWER _ ON through RP3, a zener diode DP1, a tantalum capacitor EP8 and an tantalum capacitor EP9 are connected between the drain electrode of the field effect transistor QP.