CN208272854U - Based on MC34063IC high voltage input switch power circuit - Google Patents
Based on MC34063IC high voltage input switch power circuit Download PDFInfo
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- CN208272854U CN208272854U CN201820914480.6U CN201820914480U CN208272854U CN 208272854 U CN208272854 U CN 208272854U CN 201820914480 U CN201820914480 U CN 201820914480U CN 208272854 U CN208272854 U CN 208272854U
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- mc34063ic
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- high voltage
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Abstract
The utility model discloses one kind to be based on MC34063IC high voltage input switch power circuit, the pulsewidth modulation high voltage switch circuit, for exporting after being depressured input voltage；The power circuit, for powering to MC34063IC control circuit；Signal voltage is transmitted to pulsewidth modulation high voltage switch circuit by the power circuit input terminal, and signal is input to the output end of power circuit after pulsewidth modulation high voltage switch circuit decompression by filter circuit；The output end of the filter circuit is also connected with sample circuit, which is input to MC34063IC control circuit for voltage signal；Low-voltage signal is converted to high-voltage signal by high-voltage driving circuit and is transmitted to pulsewidth modulation high voltage switch circuit by the MC34063IC.The utility model lies in that providing, one kind is low in energy consumption, and low in cost, structure is simple, and a kind of switching power circuit of high input voltage is capable of using MC34063 integrated circuit.
Description
Technical field
The utility model relates to power circuit more particularly to a kind of high voltage input power circuits.
Background technique
MC34063IC contains the monolithic control circuit of major function required for DC/DC converter and cheap.It
By the controllable oscillator of the pedestal generator with temperature self-compensation function, comparator, duty ratio, R-S trigger and
The composition such as High-current output switching circuit.The device can be used for the control core of booster converter, buck converter, reverser,
The DC/DC converter being made of it only uses a small amount of external component.It is mainly used in microprocessor (MPU) or single-chip microcontroller
(MCU) in the system based on.
MC34063IC is a highly developed boosting integrated regulator, can be applied in many occasions, and China is specially
Sharp application number: 201110231157.1, the applying date: on 08 12nd, 2011, publication date: on December 11st, 2011, patent name
Are as follows: with the general DC boosting stable-pressure device of MC34063 production of integrated circuits, disclose a kind of MC34063 integrated circuit system
The general DC boosting stable-pressure device made.The DC boosting stable-pressure device is by power supply DC, dc/dc boost pressure stabilizing electricity
Road, output voltage regulation circuit and boosting output end of pressure-stabilizing mouth composition, direct current/direct current booster voltage regulator circuit is by integrated circuit
IC1, current foldback circuit, timing oscillating capacitance C2, energy storage inductor L, sustained diode 1 and electrolytic capacitor C3 composition.The present invention
Described makes previous circuit structure obtain further letter with the general DC boosting stable-pressure device of MC34063 production of integrated circuits
Change, circuit structure diversification is standardized, and is provided convenience for the popularization and use of this integrated circuit.The present invention has circuit
Simple and direct, the features such as exempting from debugging using only a small amount of common component and circuit.It is higher using MC34063 integrated circuit transfer efficiency
The plentiful output power of feature and integrated circuit itself can make outfield high-performance booster type charger.
Although above patent document discloses the general DC boosting stable-pressure device using MC34063 production of integrated circuits,
But how the patent document but inputs high pressure in high voltage input voltage circuit using MC34063 integrated circuit without disclosing
It is reconverted into low pressure output, is a big defect of field application.
Utility model content
In view of this, low in cost, structure is simple, utilizes MC34063 collection the utility model lies in that providing a kind of low in energy consumption
It is capable of a kind of switching power circuit of high input voltage at circuit.
In order to realize the utility model aim, following technical scheme can be taken:
One kind being based on MC34063IC high voltage input switch power circuit, including pulsewidth modulation high voltage switch circuit, filtering
Circuit, sample circuit, MC34063IC control circuit, power circuit and high-voltage driving circuit, the pulsewidth modulation high-voltage switch gear electricity
Road, for being exported after being depressured input voltage；The filter circuit, for being filtered to input voltage；The sample circuit, is used for
Acquisition to applied signal voltage, the MC34063IC control circuit, controlling high-voltage driving circuit by MC34063IC will be low
Pressure signal is converted to high-voltage signal；The power circuit, for powering to MC34063IC control circuit；
Signal voltage is transmitted to pulsewidth modulation high voltage switch circuit by the power circuit input terminal, the pulsewidth modulation high pressure
Signal is input to the output end of power circuit after switching circuit decompression by filter circuit；The output end of the filter circuit also and
The voltage signal of acquisition is input to MC34063IC control circuit by sample circuit connection, the sample circuit；MC34063IC control
Low-voltage signal is converted to high-voltage signal by high-voltage driving circuit and is transmitted to pulsewidth modulation high voltage switch circuit by circuit processed.
The output end of the filter circuit is also connect with output protection circuit, which is used for output voltage
Carry out overvoltage protection.
The power circuit includes starting power supply circuit and self-supporting working power circuit, the starting power supply circuit for pair
MC34063IC control circuit starts moment power supply；When the self-sufficiency working power circuit is used to work to MC34063IC control circuit
Power supply is provided.
The high-voltage driving circuit includes a triode and a resistance, and the one of the emitter of the triode and resistance
End connection, the other end ground connection of the resistance；The base stage of the triode is connect with MC34063IC control circuit；The hair of the triode
Emitter-base bandgap grading is connect with the pulsewidth modulation high voltage switch circuit.
The output protection circuit is diode circuit of voltage regulation, the zener diode plus earth, cathode and the filtered electrical
The connection of road output end.
The self-sufficiency working power circuit includes a resistance and a diode, and one end of the resistance connects filter circuit
Output end；The anode of the other end and diode connects, and the cathode and MC34063IC control circuit input terminal of the diode connect
It connects.
The beneficial effects of the utility model are: 1) the utility model will be low by MC34063IC control high-voltage driving circuit
Pressure signal is converted to high-voltage signal and exports to high voltage switch circuit, although drop the high voltage switch circuit high input voltage also can
For low-voltage output, solve the problems, such as that this field high voltage switch circuit can not high input voltage；2) the utility model is utilized
MC34063 integrated circuit keeps this circuit cost cheap, and structure is simple；3) the utility model is low in energy consumption, the economic benefit of generation
Height is suitable for popularity application.
Detailed description of the invention
Fig. 1 is that the utility model embodiment is based on MC34063IC high voltage input switch power circuit block diagram；
Fig. 2 is that another embodiment of the utility model is based on MC34063IC high voltage input switch power circuit block diagram；
Fig. 3 is that the utility model embodiment is based on MC34063IC high voltage input switch power circuit diagram.
Specific embodiment
With reference to the accompanying drawing and the embodiments of the present invention are described in further detail utility model.
Embodiment 1
Referring to Fig. 1, MC34063IC high voltage input switch power circuit, including pulsewidth modulation high-voltage switch gear electricity should be based on
Road 1, filter circuit 2, sample circuit 3, MC34063IC control circuit 4, power circuit 6 and high-voltage driving circuit 5, the pulsewidth
High voltage switch circuit 1 is modulated, for exporting after being depressured input voltage；The filter circuit 2, for being filtered to input voltage
Wave；The sample circuit 3, for the acquisition to applied signal voltage, the MC34063IC control circuit 4 passes through MC34063IC
It controls high-voltage driving circuit and low-voltage signal is converted into high-voltage signal；The power circuit 6, for MC34063IC control circuit 4
Power supply；
Signal voltage is transmitted to pulsewidth modulation high voltage switch circuit 1 by the power circuit input terminal, and the pulsewidth modulation is high
Signal is input to the output end of power circuit after the circuit 1 that compresses switch decompression by filter circuit 2；The output of the filter circuit 2
End is also connected with sample circuit 3, which is input to MC34063IC control circuit 4 for the voltage signal of acquisition；It should
Low-voltage signal is converted to high-voltage signal by high-voltage driving circuit 5 and is transmitted to pulsewidth modulation high pressure by MC34063IC control circuit 4
Switching circuit 1.
Pulsewidth modulation (PWM) high voltage switch circuit described in the utility model, that is, PWM high voltage switch circuit, the PWM
High voltage switch circuit is under conditions of PWM wave frequency is certain, by changing the size of its duty ratio, to realize the adjusting of voltage；
Such as duty ratio be 100% when, export full voltage, duty ratio be 0 when, output voltage 0；For example total output is 30V, then
Exporting the corresponding duty ratio of 2-22V is 2/30--22/30, i.e. duty ratio is about 7%--73%.In PWM high voltage switch circuit,
Input terminal input is high voltage, and using PWM duty cycle working principle, output is low-voltage, ensures that this is practical new in this way
The stability of type work, although input is high voltage, output must be stable low-voltage.
Embodiment 2
Referring to Fig. 2, the difference is that, the output end of the filter circuit 2 is also protected with output with above-described embodiment
Protection circuit 7 connects, which is used to carry out overvoltage protection to output voltage.There are 7 pairs of output protection circuit outputs
The safety of voltage has obtained reliable guarantee.
The power circuit 6 includes starting power supply circuit 61 and self-supporting working power circuit 62, the starting power supply circuit 61
For starting moment power supply to MC34063IC control circuit 4；The self-sufficiency working power circuit 62 is used to control MC34063IC
Circuit 4 provides power supply when working.There are starting power supply circuit 61 and self-supporting working power circuit 62 to improve MC34063IC control
The safety and stability that circuit 4 works, allows MC34063IC control circuit 4 to continue non-stop run.
Embodiment 3
Referring to Fig. 3, which is the specific one embodiment of the utility model, in the present embodiment, the high drive electricity
Road 5 includes a triode and a resistance, and the emitter of the triode and one end of resistance connect, the other end of the resistance
Ground connection；The base stage of the triode is connect with MC34063IC control circuit；The emitter of the triode is pressed off with the pulsewidth modulation height
Powered-down road 1 connects.
The output protection circuit 7 is diode circuit of voltage regulation, the zener diode plus earth, cathode and the filtered electrical
The connection of 2 output end of road.
The self-sufficiency working power circuit 62 includes a resistance and a diode, and one end of the resistance connects filtered electrical
The output end on road 2；The anode of the other end and diode connects, 4 input terminal of cathode and MC34063IC control circuit of the diode
Connection.
The above, the only preferred embodiment of the utility model, are not intended to limit the protection of the utility model
Range.
Claims (6)
1. one kind is based on MC34063IC high voltage input switch power circuit, it is characterised in that: including pulsewidth modulation high-voltage switch gear
Circuit, filter circuit, sample circuit, MC34063IC control circuit, power circuit and high-voltage starting circuit, the pulsewidth modulation
High voltage switch circuit, for being exported after being depressured input voltage；The filter circuit, for being filtered to input voltage；This is adopted
Sample circuit, for the acquisition to applied signal voltage, the MC34063IC control circuit controls high pressure by MC34063IC and drives
Low-voltage signal is converted to high-voltage signal by dynamic circuit；The power circuit, for powering to MC34063IC control circuit；
Signal voltage is transmitted to pulsewidth modulation high voltage switch circuit by the power circuit input terminal, the pulsewidth modulation high-voltage switch gear
Signal is input to the output end of power circuit after circuit decompression by filter circuit；The output end of the filter circuit also and sampling
The voltage signal of acquisition is input to MC34063IC control circuit by circuit connection, the sample circuit；MC34063IC control electricity
Low-voltage signal is converted to high-voltage signal by high-voltage driving circuit and is transmitted to pulsewidth modulation high voltage switch circuit by road.
2. being based on MC34063IC high voltage input switch power circuit according to claim 1, it is characterised in that: the filter
The output end of wave circuit is also connect with output protection circuit, which is used to carry out overvoltage protection to output voltage.
3. being based on MC34063IC high voltage input switch power circuit according to claim 1, it is characterised in that: the electricity
Source circuit includes starting power supply circuit and self-supporting working power circuit, which is used to control electricity to MC34063IC
Road starts moment power supply；The self-sufficiency working power circuit is used to provide power supply when working to MC34063IC control circuit.
4. -3 is any described based on MC34063IC high voltage input switch power circuit according to claim 1, it is characterised in that:
The high-voltage driving circuit includes a triode and a resistance, and the emitter of the triode and one end of resistance connect, should
The other end of resistance is grounded；The base stage of the triode is connect with MC34063IC control circuit；The emitter of the triode and the arteries and veins
Width modulation high voltage switch circuit connection.
5. being stated according to claim 2 based on MC34063IC high voltage input switch power circuit, it is characterised in that: the output
Protection circuit is diode circuit of voltage regulation, and the zener diode plus earth, cathode connect with the filter circuit output end.
6. according to claim 3 be based on MC34063IC high voltage input switch power circuit, it is characterised in that: it is described from
It include a resistance and a diode, the output end of one end connection filter circuit of the resistance to working power circuit；It is another
It holds and is connect with the anode of diode, the cathode of the diode is connected with MC34063IC control circuit input terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820914480.6U CN208272854U (en) | 2018-06-13 | 2018-06-13 | Based on MC34063IC high voltage input switch power circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820914480.6U CN208272854U (en) | 2018-06-13 | 2018-06-13 | Based on MC34063IC high voltage input switch power circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208272854U true CN208272854U (en) | 2018-12-21 |
Family
ID=64690295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820914480.6U Expired - Fee Related CN208272854U (en) | 2018-06-13 | 2018-06-13 | Based on MC34063IC high voltage input switch power circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208272854U (en) |
-
2018
- 2018-06-13 CN CN201820914480.6U patent/CN208272854U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181221 Termination date: 20190613 |