CN206640342U

CN206640342U - A kind of signal control boot-strap circuit of low-power consumption

Info

Publication number: CN206640342U
Application number: CN201720265254.5U
Authority: CN
Inventors: 赵志良; 谢国鹏; 杨牧
Original assignee: Xi'an Gan Xin Electronic Technology Co Ltd
Current assignee: Xi'an Gan Xin Electronic Technology Co Ltd
Priority date: 2017-03-18
Filing date: 2017-03-18
Publication date: 2017-11-14
Anticipated expiration: 2027-03-18

Abstract

The utility model discloses a kind of signal of low-power consumption to control boot-strap circuit; including being connected using electronic switching circuits, conducting holding circuit for maintain PMOS Q1 conducting and protective circuit of voltage regulation for protect electronic switching circuit of the PMOS Q1 as electronic switch, the input of the electronic switching circuit with control signal CTL.The utility model can effectively reduce electronic equipment in long-time battery when on standby kwh loss phenomenon, and substantially increase battery utilizes the time, is especially suitable for the key power up function of special electrical devices for needing battery-powered long-time to be in holding state.

Description

A kind of signal control boot-strap circuit of low-power consumption

Technical field

The utility model belongs to battery powered boot-strap circuit technical field, and in particular to a kind of signal control of low-power consumption is opened Electromechanical road.

Background technology

With electronic equipment especially communication power rectifier module towards high power, low cost and low standby power loss direction send out How exhibition, effectively reduce power supply power consumption and increasingly attract attention, and many electronic equipments have battery-powered one at present There is certain power consumption in key boot-strap circuit, a key boot-strap circuit, long-time battery when on standby electricity is easily lost, and can not meet electricity Sub- equipment function standby for a long time, the utilization rate of electronic equipment is reduced, while user causes many inconvenience.

Utility model content

Technical problem to be solved in the utility model is to be directed to above-mentioned deficiency of the prior art, there is provided a kind of low work( The signal control boot-strap circuit of consumption, it in control signal CTL is high level or vacantly that the signal of the low-power consumption, which control boot-strap circuit, When, electronic switch PMOS Q1 is in cut-off state, when control signal CTL is low level, electronic switch PMOS Q1 conductings, and electricity Source input Vin voltages are equal to power output end Vout voltage, so can effectively reduce electronic equipment for a long time it is standby when pair Battery electric quantity causes the phenomenon of loss, and can substantially increase battery utilizes the time.

In order to solve the above technical problems, the technical solution adopted in the utility model is：A kind of signal control of low-power consumption is opened Electromechanical road, it is characterised in that：Including use PMOS Q1 as the electronic switching circuit of electronic switch, for maintaining PMOS Q1 The conducting holding circuit of conducting and the protective circuit of voltage regulation for protecting electronic switching circuit, the input of the electronic switching circuit End is connected with control signal CTL；

The electronic switching circuit include as electronic switch PMOS Q1 and for control PMOS Q1 conducting or Resistance R2, the resistance R3 of cut-off and NMOS tube Q2, the PMOS Q1 source electrode and drain electrode respectively with power input Vin and electricity Source output terminal Vout connections, the source electrode of the PMOS Q1 are connected with resistance R2 one end, and the resistance R2 other ends are through resistance R3 Drain electrode with the NMOS tube Q2 is connected, and the grid of the PMOS Q1 is connected with the resistance R2 and resistance R3 connection end, The control signal CTL is connected with resistance R3 with the drain electrode connection end of the NMOS tube Q2, the grid of the NMOS tube Q2 with PMOS Q1 drain electrode connection, the source ground of the NMOS tube Q2.

The characteristics of the utility model, also resides in：

The conducting holding circuit includes resistance R1, electric capacity C1, diode D1, resistance R4 and resistance R5, the resistance R1 Resistance R2 and resistance R3 both ends are parallel to, the positive pole of the diode D1 is connected with the drain electrode of the PMOS Q1, and described two Pole pipe D1 negative pole is connected with resistance R4 one end, and the resistance R4 other ends are connected with the grid of the NMOS tube Q2, the electricity Hinder the R4 other ends to be also grounded through resistance R5, the resistance R4 other ends are also grounded through electric capacity C1.

The protective circuit of voltage regulation includes the reverse voltage-regulator diode ZD1 with the PMOS Q1 source electrodes and gate connected in parallel.

The protective circuit of voltage regulation also includes the reverse voltage-regulator diode ZD2 in parallel with the electric capacity C1.

The protective circuit of voltage regulation also includes the backward dioded D2 with NMOS tube Q2 drain electrodes and sources connected in parallel.

The utility model has advantages below compared with prior art：

1. the utility model is simple in construction, easy to use, when control signal CTL is high level or is hanging, boot-strap circuit In cut-off state, no loop conducting, i.e., battery electric quantity is lossless when electronic equipment is in long-time holding state, control signal When CTL is low level, boot-strap circuit is in the conduction state, can electron equipment normal power supply, so effectively reduce electronics set The standby phenomenon for causing loss to battery electric quantity when long-time is standby, improve battery utilizes the time.

2. conducting holding circuit of the present utility model, when can to ensure control signal CTL be low level, boot-strap circuit is always It is in the conduction state, the normal work of electronic equipment is equally also effectively ensured.

In summary, the utility model is simple in construction and easy to operate, and input cost is few, reasonable in design, is easy to grasp Make, using effect is good.

Below by drawings and examples, the technical solution of the utility model is described in further detail.

Brief description of the drawings

Fig. 1 is circuit theory diagrams of the present utility model.

Embodiment

A kind of signal control boot-strap circuit of low-power consumption as shown in Figure 1, including using PMOS Q1 as electronic switch Electronic switching circuit, for maintaining the conducting holding circuit and voltage stabilizing for protecting electronic switching circuit that PMOS Q1 turns on Protection circuit, the input of the electronic switching circuit are connected with control signal CTL；

As shown in figure 1, the electronic switching circuit is included as the PMOS Q1 of electronic switch and for controlling PMOS Resistance R2, the resistance R3 of pipe Q1 on or off and NMOS tube Q2, the PMOS Q1 source electrode and drain electrode are defeated with power supply respectively Enter to hold Vin to be connected with power output end Vout, the source electrode of the PMOS Q1 is connected with resistance R2 one end, and the resistance R2 is another End is connected through resistance R3 with the drain electrode of the NMOS tube Q2, the company of the grid of the PMOS Q1 and the resistance R2 and resistance R3 End connection is connect, the control signal CTL is connected with resistance R3 with the drain electrode connection end of the NMOS tube Q2, the NMOS tube Q2's Grid is connected with PMOS Q1 drain electrode, the source ground of the NMOS tube Q2.

In the present embodiment, the conducting holding circuit includes resistance R1, electric capacity C1, diode D1, resistance R4 and resistance R5, The resistance R1 is parallel to resistance R2 and resistance R3 both ends, and the drain electrode of the positive pole of the diode D1 and the PMOS Q1 connects Connect, the negative pole of the diode D1 is connected with resistance R4 one end, and the grid of the resistance R4 other ends and the NMOS tube Q2 connects Connect, the resistance R4 other ends are also grounded through resistance R5, and the resistance R4 other ends are also grounded through electric capacity C1.

In the present embodiment, the protective circuit of voltage regulation includes the reverse voltage stabilizing with the PMOS Q1 source electrodes and gate connected in parallel Diode ZD1.

In the present embodiment, the protective circuit of voltage regulation also includes the reverse voltage-regulator diode ZD2 in parallel with the electric capacity C1.

In the present embodiment, the protective circuit of voltage regulation also includes reverse two with NMOS tube Q2 drain electrodes and sources connected in parallel Pole pipe D2.

Operation principle of the present utility model is：

When control signal CTL is high level or is hanging, D point voltages are higher, and NMOS tube Q2 is in cut-off state, PMOS Q1 source electrode A points and the voltage difference VAB of grid B points are zero, and PMOS Q1 is in cut-off state；Control signal CTL is low level When, D points voltage is low level, and PMOS Q1 source electrode A points and the voltage difference VAB of grid B points increase rapidly, and PMOS Q1 is rapid Saturation conduction, Vout voltage value are equal to Vin magnitudes of voltage, diode D1 conductings, pass through resistance R4 and resistance R5 partial pressures, NMOS tube Q2 Grid E point voltages VE is in high level, NMOS tube Q2 saturation conductions, and D point voltages VD is low level, maintains PMOS Q1 to be in and leads Logical state.

Using boot-strap circuit of the utility model as electronic equipment, when electronic equipment is in holding state, start electricity Road is in cut-off state, so effectively reduces loss of the electronic equipment when long-time is standby to battery electric quantity, can effectively prolong The life-span of long battery, conducting holding circuit can ensure to be constantly in conducting state during electronic switch circuit for working, not interfere with The normal use of electronic equipment, voltage-regulator diode ZD1, voltage-regulator diode ZD2 and diode D2 in protective circuit of voltage regulation can Effectively prevent that PMOS Q1, NMOS tube Q2 and electric capacity C1 are breakdown, the utility model is highly suitable for being in standby shape for a long time The electronic equipment with a key power up function of state.

It is described above, only it is preferred embodiment of the present utility model, not the utility model is imposed any restrictions, every Any simple modification, change and the equivalent structure change made according to the utility model technical spirit to above example, still Belong in the protection domain of technical solutions of the utility model.

Claims

A kind of 1. signal control boot-strap circuit of low-power consumption, it is characterised in that：Including using PMOS Q1 as electronic switch Electronic switching circuit, for maintain PMOS Q1 turn on conducting holding circuit and for protecting the voltage stabilizing of electronic switching circuit to protect Protection circuit, the input of the electronic switching circuit are connected with control signal CTL；

The electronic switching circuit is included as the PMOS Q1 of electronic switch and for controlling PMOS Q1 on or off Resistance R2, resistance R3 and NMOS tube Q2, the PMOS Q1 source electrode and drain electrode it is defeated with power input Vin and power supply respectively Go out to hold Vout to connect, the source electrode of the PMOS Q1 is connected with resistance R2 one end, and the resistance R2 other ends are through resistance R3 and institute NMOS tube Q2 drain electrode connection is stated, the grid of the PMOS Q1 is connected with the resistance R2 and resistance R3 connection end, described Control signal CTL is connected with resistance R3 with the drain electrode connection end of the NMOS tube Q2, the grid and PMOS of the NMOS tube Q2 Q1 drain electrode connection, the source ground of the NMOS tube Q2.
A kind of 2. signal control boot-strap circuit of low-power consumption according to claim 1, it is characterised in that：The conducting maintains Circuit includes resistance R1, electric capacity C1, diode D1, resistance R4 and resistance R5, the resistance R1 and is parallel to resistance R2 and resistance R3 Both ends, the positive pole of the diode D1 is connected with the drain electrode of the PMOS Q1, negative pole and the resistance R4 of the diode D1 One end is connected, and the resistance R4 other ends are connected with the grid of the NMOS tube Q2, and the resistance R4 other ends are also through resistance R5 Ground connection, the resistance R4 other ends are also grounded through electric capacity C1.
A kind of 3. signal control boot-strap circuit of low-power consumption according to claim 2, it is characterised in that：The voltage-stabilizing protection Circuit includes the reverse voltage-regulator diode ZD1 with the PMOS Q1 source electrodes and gate connected in parallel.
A kind of 4. signal control boot-strap circuit of low-power consumption according to claim 2, it is characterised in that：The voltage-stabilizing protection Circuit also includes the reverse voltage-regulator diode ZD2 in parallel with the electric capacity C1.
A kind of 5. signal control boot-strap circuit of low-power consumption according to claim 2, it is characterised in that：The voltage-stabilizing protection Circuit also includes the backward dioded D2 with NMOS tube Q2 drain electrodes and sources connected in parallel.