CN212012598U

CN212012598U - Multi-path trigger wake-up circuit of low-power consumption equipment

Info

Publication number: CN212012598U
Application number: CN202020900602.3U
Authority: CN
Inventors: 许舸; 鲁涵
Original assignee: Shipu Information Technology Shanghai Co ltd
Current assignee: Shipu Information Technology Shanghai Co ltd
Priority date: 2020-05-26
Filing date: 2020-05-26
Publication date: 2020-11-24
Anticipated expiration: 2030-05-26

Abstract

The utility model relates to a circuit especially relates to a multichannel trigger awakening circuit of low-power consumption equipment, include the many grades of rotary switch input circuit that constitute by a plurality of PMOS pipes and a plurality of resistance and by resistance R1, PMOS pipe Q5, electric capacity C1, the time delay trigger circuit that C2 constitutes, RSW0-RSW4 is connected respectively to every fender grade of rotary switch input circuit that keeps off more, VCC is connected to the public end of many grades of rotary switch input circuit, WAKE _ UP _ IN is connected to the chip and awakens UP the pin, the low level awakens UP, built-IN pull-UP. The utility model discloses can awaken up the trigger for single pin, and have the low-power consumption equipment that requires to awaken up the trigger time, when many grades of rotary switch keep off the position and change, realize triggering the function of awakening up, the consumption of own is extremely low (uA level), is fit for deploying on low-power consumption equipment.

Description

Multi-path trigger wake-up circuit of low-power consumption equipment

Technical Field

The utility model relates to a circuit especially relates to a multichannel trigger wake-up circuit of low-power consumption equipment.

Background

In the design of the low-power wake-up trigger circuit, a multi-gear rotary switch needs to pull down the level of a certain pin for a period of time when the gear is changed so as to wake up the circuit. The existing circuit uses a logic gate circuit, cannot automatically recover after triggering and awakening pins, easily causes repeated triggering of individual chips and limits the application range.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve the defect that exists among the above-mentioned prior art and not enough, provide one kind and can awaken up the trigger for single pin, and have the low-power consumption equipment that requires to awaken up the trigger time, when many grades of rotary switch keep off the position and change, realize triggering the awakening function of awakening up, the consumption of own is extremely low (uA level), is fit for the multichannel trigger awakening circuit of the low-power consumption equipment who deploys on low-power consumption equipment.

The technical scheme of the utility model: a multi-way trigger WAKE-UP circuit of low-power consumption equipment comprises a multi-gear rotary switch input circuit formed by a plurality of PMOS (P-channel metal oxide semiconductor) tubes and a plurality of resistors, and a delay trigger circuit formed by a resistor R1, a PMOS tube Q5 and capacitors C1 and C2, wherein each gear of the multi-gear rotary switch input circuit is respectively connected with RSW0-RSW4, a common end of the multi-gear rotary switch input circuit is connected with VCC, WAKE _ UP _ IN is connected to a chip WAKE-UP pin, and low-level WAKE-UP and built-IN pull-UP are achieved.

The utility model discloses can awaken up the trigger for single pin, and have the low-power consumption equipment that requires to awaken up the trigger time, when many grades of rotary switch keep off the position and change, realize triggering the function of awakening up, the consumption of own is extremely low (uA level), is fit for deploying on low-power consumption equipment.

Preferably, the multi-gear rotary switch input circuit is a 4-gear rotary switch input circuit composed of PMOS transistors Q1, Q2, Q3 and Q4 and resistors R2, R3, R4 and R5.

Preferably, when the shift of the rotary switch is changed, the common end is not overlapped with any pin of RSW0-4 for a period of time, at the moment, the grids of the PMOS tubes Q1-Q4 are respectively pulled down by resistors R5-R2, the capacitor C2 is conducted to VCC for charging, the grid of the PMOS tube Q5 is pulled up, and the wake-up pin is pulled down; when the rotation process of the rotary switch is finished, the capacitor C2 still keeps high level, the awakening action is continued until the resistor R1 discharges the capacitor C2 to be below the threshold level of the grid electrode of the PMOS tube Q5, so that enough awakening time is ensured, after the grid electrode of the PMOS tube Q5 is lower than the threshold level, the awakening pin is disconnected from the ground and pulled up again for releasing, the awakening process is finished, and the capacitor C1 has the effect of preventing the open-close shaking from causing misoperation.

Preferably, the PMOS tube Q1-Q4 is selected from the following types: in SI2301, the type of the PMOS transistor Q5 is: sl 2300.

Preferably, the resistances of the resistors R1-R5 are 1K-10M, the capacitance of the capacitor C2 is 10nf-22uf, and the capacitance of the capacitor C1 is 1nf-1 uf.

Preferably, the resistance value of the R1 is 100k, the resistance values of the resistors R2-R5 are 200k, and the capacitance value of the capacitor C2 is 1 uf.

Drawings

Fig. 1 is a schematic circuit diagram according to an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings, but the present invention is not limited thereto.

Examples

As shown in fig. 1, the present embodiment takes a 4-way multi-gear rotary switch as an example:

a multipath trigger WAKE-UP circuit of low-power-consumption equipment comprises a PMOS tube Q1, Q2, Q3 and Q4, a resistor R2, a resistor R3, a resistor R4 and a resistor R5 form a 4-gear rotary switch input circuit, a delay trigger circuit is formed by the resistor R1, the resistor C2, the resistor Q5 and the resistor C1, a common end of the 4-gear rotary switch is connected with VCC, 4 gears are respectively connected with RSW0-RSW4, WAKE _ UP _ IN is connected to a chip WAKE-UP pin, and low-level WAKE-UP and built-UP pull are carried out.

The specific principle is as follows:

when the rotary switch is changed in gear, the common end is not lapped with any pin of RSW0-4 for a period of time, at the moment, the grids of Q1-Q4 are respectively pulled down by R5-R2, C2 is conducted to VCC for charging, the grid of Q5 is pulled up, and the wake-up pin is pulled down. When the rotation process is over, C2 remains high and the wake-up action continues until R1 discharges C2 below the gate threshold level of Q5 in order to ensure sufficient wake-up time. After the gate of the Q5 is lower than the threshold level, the wake-up pin is disconnected from the ground, pulled up again and released, and the wake-up process is ended. The function of C1 is to prevent the shaking of the open and close from causing malfunction.

Q1-Q4 are selected from the following types: SI 2301.

The R2-R5 values are 200K, but 1K-10M.

R1 has a resistance of 100k, but may be 1 k-10M.

C2 volume fraction is 1uf, but 10nf-22uf can be.

The Q5 type selection is: sl 2300.

The C1 type selection is: 1nf-1 uf.

The utility model discloses a 4 keep off rotary switch input circuit can adopt 2-10 grades of rotary switch input circuit to replace (dotted line frame 1 is a gear unit in figure 1, and 2-10 can be duplicated to such gear unit), accomplish 2-10 ways and trigger.

Claims

1. A multi-trigger wake-up circuit of a low-power consumption device is characterized in that: the multi-gear rotary switch comprises a multi-gear rotary switch input circuit consisting of a plurality of PMOS (P-channel metal oxide semiconductor) tubes and a plurality of resistors, and a delay trigger circuit consisting of a resistor R1, a PMOS tube Q5, capacitors C1 and C2, wherein each gear of the multi-gear rotary switch input circuit is respectively connected with RSW0-RSW4, the common end of the multi-gear rotary switch input circuit is connected with VCC, WAKE _ UP _ IN is connected with a chip WAKE-UP pin, low-level WAKE-UP is performed, and pull-UP is performed internally.

2. The multi-trigger wake-up circuit of a low power consumption device according to claim 1, wherein: the multi-gear rotary switch input circuit is a 4-gear rotary switch input circuit consisting of PMOS tubes Q1, Q2, Q3 and Q4 and resistors R2, R3, R4 and R5.

3. The multi-trigger wake-up circuit of a low power consumption device according to claim 2, wherein: when the gear of the rotary switch changes, the common end is not lapped with any pin of RSW0-4 for a period of time, at the moment, the grids of PMOS tubes Q1-Q4 are respectively pulled down by resistors R5-R2, a capacitor C2 is conducted to VCC for charging, the grid of the PMOS tube Q5 is pulled up, and the wake-up pin is pulled down; when the rotation process of the rotary switch is finished, the capacitor C2 still keeps high level, the awakening action is continued until the resistor R1 discharges the capacitor C2 to be below the threshold level of the grid electrode of the PMOS tube Q5, so that enough awakening time is ensured, after the grid electrode of the PMOS tube Q5 is lower than the threshold level, the awakening pin is disconnected from the ground and pulled up again for releasing, the awakening process is finished, and the capacitor C1 has the effect of preventing the open-close shaking from causing misoperation.

4. The multi-trigger wake-up circuit of a low power consumption device according to claim 2, wherein: the PMOS tube Q1-Q4 is selected as follows: in SI2301, the type of the PMOS transistor Q5 is: sl 2300.

5. The multi-trigger wake-up circuit of a low power consumption device according to claim 2, wherein: the resistance values of the resistors R1-R5 are 1K-10M, the capacitance value of the capacitor C2 is 10nf-22uf, and the capacitance value of the capacitor C1 is 1nf-1 uf.

6. The multi-trigger wake-up circuit of a low power consumption device according to claim 5, wherein: the resistance value of the R1 is 100k, the resistance values of the resistors R2-R5 are 200k, and the capacitance value of the capacitor C2 is 1 uf.