CN202854544U - Power supply control circuit of single chip microcomputer - Google Patents
Power supply control circuit of single chip microcomputer Download PDFInfo
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- CN202854544U CN202854544U CN 201220515378 CN201220515378U CN202854544U CN 202854544 U CN202854544 U CN 202854544U CN 201220515378 CN201220515378 CN 201220515378 CN 201220515378 U CN201220515378 U CN 201220515378U CN 202854544 U CN202854544 U CN 202854544U
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Abstract
The utility model relates to a power supply control circuit of a single chip microcomputer, comprising a voltage stabilizing circuit unit, of which an input end is connected with a power supply. The power supply control circuit of the single chip microcomputer is characterized in that an output end of the voltage stabilizing circuit unit is connected with the single chip microcomputer and a power input end of a control unit, an output signal end of the single chip microcomputer is connected with the control unit, and the control unit intermittently outputs low-level signals and high-level signals under the control of the single chip microcomputer through a power output end. According to the utility model, power provided for a load is controlled by the control unit, the control unit is controlled by control signals sent by the single chip microcomputer, power supply of the load can be effectively controlled, and the power supply control circuit of the single chip microcomputer can be applied to any working environment.
Description
Technical field
The utility model relates to a kind of microcontroller power supply control circuit.
Background technology
Existing power control circuit only realized by mu balanced circuit, by mu balanced circuit with stabilized input voltage on the operating voltage of load, thereby proof load can be worked continually and steadily.This circuit structure can both be suitable in most of occasion, but in some occasion, needs on request to the power supply of load discontinuity, if still adopt conventional power control circuit then can't meet the demands.
Summary of the invention
The purpose of this utility model provides a kind of power control circuit that can power to load discontinuity on request.
In order to achieve the above object, the technical solution of the utility model has provided a kind of microcontroller power supply control circuit, comprise the mu balanced circuit unit, the input end of mu balanced circuit unit connects power supply, it is characterized in that: the output terminal of mu balanced circuit unit connects the power input of single-chip microcomputer and control module, the output signal end connection control unit of single-chip microcomputer passes through power output end output low level signal and high level signal by control module intermittence ground under the control of single-chip microcomputer.
Preferably, described control module comprises metal-oxide-semiconductor one and metal-oxide-semiconductor two, the source electrode of metal-oxide-semiconductor one connects the output terminal of described mu balanced circuit unit, the grid of metal-oxide-semiconductor one connects the output signal end of described single machine unit by resistance one, the drain electrode of metal-oxide-semiconductor one connects described power output end, cross-over connection resistance two between the source electrode of metal-oxide-semiconductor one and grid;
Resistance four in parallel and an end ground connection of electric capacity one, the other end connect the output signal end of described single machine unit by resistance one;
Between the resistance four and electric capacity one and resistance one of the grid access parallel connection of metal-oxide-semiconductor two, the drain electrode of metal-oxide-semiconductor two connects described power output end, the source ground of metal-oxide-semiconductor two by resistance three;
Described power output end is via electric capacity two ground connection.
Preferably, described mu balanced circuit unit comprises electric capacity three, electric capacity three is connected in parallel on two output terminals of power supply, the schottky diode one in parallel successively at the two ends of electric capacity three, the radiation proof inductance, filter capacitor one and filter capacitor two, magnetic bead and the electric capacity six of series connection are connected in parallel on the filter capacitor two, electric capacity seven is connected in parallel on the electric capacity six, the input end of voltage stabilizer is connected between magnetic bead and the electric capacity six, the output terminal of voltage stabilizer produces stable output voltage, the earth terminal ground connection of voltage stabilizer, shunt capacitance eight successively between the output terminal of voltage stabilizer and earth terminal, electric capacity nine and schottky diode two.
The utility model in use, power supply produces stabilized voltage supply by the mu balanced circuit unit, control single chip computer, after single-chip microcomputer powered on, producing by the programmed control control module can be with the supply voltage of dynamic load, thus the switch of control load power supply effectively, and the software in the single-chip microcomputer can repeatedly be revised, can not affect performance, it is more effective to compare hard switching, has greatly saved power consumption when load does not need to use.
The utility model is controlled by control module for the power supply that load provides, and the control signal that control module is sent by single-chip microcomputer control, and the Power supply situation of control load effectively is so that the utility model goes in any working environment.
Description of drawings
A kind of microcontroller power supply control circuit overall circuit block diagram that Fig. 1 provides for the utility model;
Fig. 2 is the circuit diagram of control module;
Fig. 3 is the circuit diagram of mu balanced circuit unit.
Embodiment
For the utility model is become apparent, hereby with preferred embodiment, and cooperate accompanying drawing to be described in detail below.
As shown in Figure 1, a kind of microcontroller power supply control circuit that the utility model provides, comprise the mu balanced circuit unit, the input end of mu balanced circuit unit connects power supply, it is characterized in that: the output terminal of mu balanced circuit unit connects the power input of single-chip microcomputer and control module, the output signal end connection control unit of single-chip microcomputer passes through power output end (Vout) output low level signal and high level signal by control module intermittence ground under the control of single-chip microcomputer.
As shown in Figure 2, described control module comprises metal-oxide-semiconductor one Q1 and metal-oxide-semiconductor two Q2, the source electrode of metal-oxide-semiconductor one Q1 connects the output terminal of described mu balanced circuit unit, the grid of metal-oxide-semiconductor one Q1 connects the output signal end of described single machine unit by resistance one R1, the drain electrode of metal-oxide-semiconductor one Q1 connects described power output end Vout, cross-over connection resistance two R2 between the source electrode of metal-oxide-semiconductor one Q1 and grid;
Resistance four R4 in parallel and the end ground connection of electric capacity one C1, the other end connects the output signal end of described single machine unit by resistance one R1;
Between resistance four R4 and electric capacity one C1 and resistance one R1 of the grid access parallel connection of metal-oxide-semiconductor two Q2, the drain electrode of metal-oxide-semiconductor two Q2 connects described power output end Vout by resistance three R3, the source ground of metal-oxide-semiconductor two Q2;
Described power output end Vout is via electric capacity two C2 ground connection.
As shown in Figure 3, described mu balanced circuit unit comprises electric capacity three C3, electric capacity three C3 are connected in parallel on two output terminals of power supply, schottky diode one D1 in parallel successively at the two ends of electric capacity three C3, radiation proof inductance L 1, filter capacitor one C4 and filter capacitor two C5, magnetic bead B13 and electric capacity six C6 of series connection are connected in parallel on filter capacitor two C5, electric capacity seven C7 are connected in parallel on electric capacity six C6, the input end of voltage stabilizer U1 is connected between magnetic bead B13 and electric capacity six C6, the output terminal OUT of voltage stabilizer U1 produces stable output voltage, the earth terminal GND ground connection of voltage stabilizer U1, shunt capacitance eight C8 successively between the output terminal OUT of voltage stabilizer U1 and earth terminal GND, electric capacity nine C9 and schottky diode two D2.
In the utility model, provide power supply by voltage stabilizer U1 for single-chip microcomputer, and stable voltage flowed to control module, when single-chip microcomputer sends high-level control signal, metal-oxide-semiconductor two Q2 conductings, power output end Vout is dragged down, power output end Vout output low level, metal-oxide-semiconductor one Q1 conducting when the single-chip microcomputer output low level, power output end Vout is drawn high to 3.3V, power output end Vout exports high level, thereby the height of control power output end Vout output voltage need to be applicable to the load of high-low level control and the occasion that needs are saved power consumption.
Claims (3)
1. microcontroller power supply control circuit, comprise the mu balanced circuit unit, the input end of mu balanced circuit unit connects power supply, it is characterized in that: the output terminal of mu balanced circuit unit connects the power input of single-chip microcomputer and control module, the output signal end connection control unit of single-chip microcomputer passes through power output end (Vout) output low level signal and high level signal by control module intermittence ground under the control of single-chip microcomputer.
2. a kind of microcontroller power supply control circuit as claimed in claim 1, it is characterized in that: described control module comprises metal-oxide-semiconductor one (Q1) and metal-oxide-semiconductor two (Q2), the source electrode of metal-oxide-semiconductor one (Q1) connects the output terminal of described mu balanced circuit unit, the grid of metal-oxide-semiconductor one (Q1) connects the output signal end of described single machine unit by resistance one (R1), the drain electrode of metal-oxide-semiconductor one (Q1) connects described power output end (Vout), cross-over connection resistance two (R2) between the source electrode of metal-oxide-semiconductor one (Q1) and grid;
Resistance four (R4) in parallel and an end ground connection of electric capacity one (C1), the other end connect the output signal end of described single machine unit by resistance one (R1);
Between the resistance four (R4) and electric capacity one (C1) and resistance one (R1) of the grid access parallel connection of metal-oxide-semiconductor two (Q2), the drain electrode of metal-oxide-semiconductor two (Q2) connects described power output end (Vout) by resistance three (R3), the source ground of metal-oxide-semiconductor two (Q2);
Described power output end (Vout) is via electric capacity two (C2) ground connection.
3. a kind of microcontroller power supply control circuit as claimed in claim 1, it is characterized in that: described mu balanced circuit unit comprises electric capacity three (C3), electric capacity three (C3) is connected in parallel on two output terminals of power supply, the schottky diode one in parallel (D1) successively at the two ends of electric capacity three (C3), radiation proof inductance (L1), filter capacitor one (C4) and filter capacitor two (C5), magnetic bead (B13) and the electric capacity six (C6) of series connection are connected in parallel on the filter capacitor two (C5), electric capacity seven (C7) is connected in parallel on the electric capacity six (C6), the input end of voltage stabilizer (U1) is connected between magnetic bead (B13) and the electric capacity six (C6), the output terminal (OUT) of voltage stabilizer (U1) produces stable output voltage, earth terminal (GND) ground connection of voltage stabilizer (U1), shunt capacitance eight (C8) successively between the output terminal (OUT) of voltage stabilizer (U1) and earth terminal (GND), electric capacity nine (C9) and schottky diode two (D2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220515378 CN202854544U (en) | 2012-10-09 | 2012-10-09 | Power supply control circuit of single chip microcomputer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220515378 CN202854544U (en) | 2012-10-09 | 2012-10-09 | Power supply control circuit of single chip microcomputer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202854544U true CN202854544U (en) | 2013-04-03 |
Family
ID=47985725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220515378 Expired - Fee Related CN202854544U (en) | 2012-10-09 | 2012-10-09 | Power supply control circuit of single chip microcomputer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202854544U (en) |
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2012
- 2012-10-09 CN CN 201220515378 patent/CN202854544U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130403 Termination date: 20151009 |
|
| EXPY | Termination of patent right or utility model |