CN207083022U - A kind of power module - Google Patents
A kind of power module Download PDFInfo
- Publication number
- CN207083022U CN207083022U CN201721091080.1U CN201721091080U CN207083022U CN 207083022 U CN207083022 U CN 207083022U CN 201721091080 U CN201721091080 U CN 201721091080U CN 207083022 U CN207083022 U CN 207083022U
- Authority
- CN
- China
- Prior art keywords
- resistance
- electric capacity
- circuit
- control chip
- current rectifying
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Dc-Dc Converters (AREA)
- Rectifiers (AREA)
Abstract
The utility model discloses a kind of power module, it is installed in distribution box, including the first current rectifying and wave filtering circuit, transformer, second current rectifying and wave filtering circuit, control circuit and feedback circuit, the control circuit includes being internally integrated the control chip of metal-oxide-semiconductor, first current rectifying and wave filtering circuit includes piezo-resistance, EMI circuits, rectifier bridge stack, common mode choke and the first electric capacity, piezo-resistance, EMI circuits, rectifier bridge stack, common mode choke and the first electric capacity are sequentially connected, first electric capacity, transformer and the second rectification circuit are sequentially connected, feedback circuit connects the second current rectifying and wave filtering circuit and control chip respectively, control chip connects first electric capacity and the second current rectifying and wave filtering circuit respectively, the piezo-resistance is used to connect AC power.Can will exchange input be converted into DC voltage-stabilizing output, have anti-lightning surge, small volume, it is in light weight, ripple is small the advantages of.
Description
Technical field
It the utility model is related to electronic technology field, more particularly to a kind of power module.
Background technology
Power module is used to the design of the electronic equipment offer supply of electric power of rear end.Common power module has exchange
Power module, DC power supplier etc., AC power supply module generally only need to carry out simply boosting or being depressured becoming to 220V civil powers
Change, and DC power supplier then needs to convert alternating current to direct current.
There are many power-supply devices on the market at present, but be all unsatisfactory for the size requirement installed in distribution box mostly, and
And the shortcomings that ripple is larger be present.
Utility model content
Technical problem to be solved in the utility model is：There is provided a kind of small volume, the power supply mould that in light weight, ripple is small
Block, it can be installed in distribution box.
In order to solve the above-mentioned technical problem, the technical solution adopted in the utility model is：
A kind of power module, is installed in distribution box, including the first current rectifying and wave filtering circuit, transformer, the second rectifying and wave-filtering
Circuit, control circuit and feedback circuit, the control circuit include being internally integrated the control chip of metal-oxide-semiconductor, the first rectification filter
Wave circuit includes piezo-resistance, EMI circuits, rectifier bridge stack, common mode choke and the first electric capacity, piezo-resistance, EMI circuits, whole
Stream bridge heap, common mode choke and the first electric capacity are sequentially connected, and first electric capacity, transformer and the second rectification circuit connect successively
Connect, feedback circuit connects the second current rectifying and wave filtering circuit and control chip respectively, control chip connect respectively first electric capacity and
Second current rectifying and wave filtering circuit, the piezo-resistance are used to connect AC power.
Further, the control circuit also includes RCD absorbing circuits, and the RCD absorbing circuits connect the first electricity respectively
Appearance and control chip.
Further, the control electric capacity also includes the second electric capacity and commutation diode, one end of the commutation diode
Transformer is connected, the other end of commutation diode connects one end of the second electric capacity and the power end of control chip, the second electricity respectively
The other end ground connection of appearance.
Further, second current rectifying and wave filtering circuit includes fast recovery diode and wave filter, the transformer, fast extensive
Multiple diode and wave filter are sequentially connected, the tie point connection feedback circuit of the fast recovery diode and wave filter.
Further, the wave filter is pi type filter.
Further, the feedback circuit includes three-terminal voltage-stabilizing pipe, photo-coupler, the 5th resistance, the 6th resistance, the 7th electricity
Resistance, the 8th resistance, the 9th resistance, the tenth resistance, the 5th electric capacity and the 6th electric capacity, the company of the fast recovery diode and wave filter
Contact connects one end, one end of the 6th resistance and one end of the 7th resistance of the 5th resistance, one end connection of the 5th resistance respectively
The first input end of photo-coupler, the 8th resistance connect the other end, one end of the 6th electric capacity, the 9th resistance of the 6th resistance respectively
One end and the tenth resistance one end, the 7th resistance connect respectively photo-coupler the second input and the 6th electric capacity it is another
End, three ends of three-terminal voltage-stabilizing pipe connect the second input of photo-coupler, the other end and ground of the 6th resistance, the 5th electric capacity respectively
Both ends connect the first input end and the second input of photo-coupler, the second input end grounding of photo-coupler, optocoupler respectively
The first input end connection control chip of clutch.
The beneficial effects of the utility model are：Alternating current is whole by the first current rectifying and wave filtering circuit, transformer and second
Smooth dc source is obtained after current circuit, when output voltage changes, feedback circuit is input to the feedback voltage of control chip
Also change therewith, change regulation output duty cycle of the control chip according to feedback voltage, so as to reach the mesh of regulated output voltage
's.Above-mentioned power module effectively prevents lightning surge from damaging circuit by piezo-resistance, suppresses DM EMI by EMI circuits,
By current rectifying and wave filtering circuit, output ripple is reduced, and as a result of integrated control chip and rectifier bridge stack, subtract significantly
The small volume and weight of product.
Brief description of the drawings
Fig. 1 is the structure connection diagram of the power module of the utility model embodiment；
Fig. 2 is the circuit diagram of the power module of the utility model embodiment one.
Label declaration：
1st, the first current rectifying and wave filtering circuit；2nd, transformer；3rd, the second current rectifying and wave filtering circuit；4th, control circuit；5th, feedback circuit.
Embodiment
For detailed description technology contents of the present utility model, the objects and the effects, below in conjunction with embodiment and match somebody with somebody
Accompanying drawing is closed to be explained in detail.
The design of the utility model most critical is：Using the control chip and rectifier bridge stack for being integrated with metal-oxide-semiconductor, first is whole
Stream filter circuit includes piezo-resistance, EMI circuits, rectifier bridge stack, common mode choke and the first electric capacity, piezo-resistance, EMI electricity
Road, rectifier bridge stack, common mode choke and the first electric capacity are sequentially connected, and the first electric capacity, transformer and the second rectification circuit connect successively
Connect, feedback circuit connects the second current rectifying and wave filtering circuit and control chip respectively, control chip connect respectively first electric capacity and
Second current rectifying and wave filtering circuit.
Referring to Fig. 1, the utility model provides：
A kind of power module, is installed in distribution box, including the first current rectifying and wave filtering circuit 1, transformer 2, the second rectification filter
Wave circuit 3, control circuit 4 and feedback circuit 5, control chip of the control circuit 4 including being internally integrated metal-oxide-semiconductor, first
Current rectifying and wave filtering circuit 1 includes piezo-resistance, EMI circuits, rectifier bridge stack, common mode choke and the first electric capacity, piezo-resistance, EMI
Circuit, rectifier bridge stack, common mode choke and the first electric capacity are sequentially connected, first electric capacity, the rectification circuit of transformer 2 and second
It is sequentially connected, feedback circuit 5 connects the second current rectifying and wave filtering circuit 3 and control chip respectively, and control chip connects described respectively
One electric capacity and the second current rectifying and wave filtering circuit 3, the piezo-resistance are used to connect AC power.
It was found from foregoing description, the beneficial effects of the utility model are：Exchange input can be converted into DC voltage-stabilizing
Output, there is the function of anti-lightning surge.Prior art needs external metal-oxide-semiconductor and radiator, and small product size is big, and circuit is complicated,
And cost is higher, the utility model is realized using the control chip for being internally integrated MOS passes, circuit structure is simple, small volume,
It is in light weight, there is the effect for simplifying circuit structure and reducing cost, can be installed in the distribution box of volume requirement.
Further, the control circuit 4 also includes RCD absorbing circuits, and the RCD absorbing circuits connect the first electricity respectively
Appearance and control chip.
It was found from foregoing description, spike is absorbed by RCD absorbing circuits, prevented in the too high damage control chip of peak voltage
The integrated metal-oxide-semiconductor in portion.
Further, the control electric capacity also includes the second electric capacity and commutation diode, one end of the commutation diode
Transformer 2 is connected, the other end of commutation diode connects one end of the second electric capacity and the power end of control chip, the second electricity respectively
The other end ground connection of appearance.
It was found from foregoing description, to control after the rectified diode rectification of voltage and the second capacitor filtering of transformer output
Chip power supply.
Further, second current rectifying and wave filtering circuit 3 includes fast recovery diode and wave filter, the transformer 2, fast
Recovery diode and wave filter are sequentially connected, the tie point connection feedback circuit 5 of the fast recovery diode and wave filter.
It was found from foregoing description, the output voltage of transformer obtains after fast recovery diode rectification, then the filtering of filtered device
To 5V voltages.
Further, the wave filter is pi type filter.
It was found from foregoing description, using pi type filter, the output ripple of circuit can be further reduced.Certainly, can be according to reality
Border use demand selects different wave filters.
Further, the feedback circuit 5 includes three-terminal voltage-stabilizing pipe, photo-coupler, the 5th resistance, the 6th resistance, the 7th
Resistance, the 8th resistance, the 9th resistance, the tenth resistance, the 5th electric capacity and the 6th electric capacity, the fast recovery diode and wave filter
Tie point connects one end, one end of the 6th resistance and one end of the 7th resistance of the 5th resistance respectively, and one end of the 5th resistance connects
The first input end of photo-coupler is connect, the 8th resistance connects the other end of the 6th resistance, one end of the 6th electric capacity, the 9th electricity respectively
One end of resistance and one end of the tenth resistance, the 7th resistance connect respectively photo-coupler the second input and the 6th electric capacity it is another
End, three ends of three-terminal voltage-stabilizing pipe connect the second input of photo-coupler, the other end and ground of the 6th resistance, the 5th electric capacity respectively
Both ends connect the first input end and the second input of photo-coupler, the second input end grounding of photo-coupler, optocoupler respectively
The first input end connection control chip of clutch.
It was found from foregoing description, when output voltage rises, the terminal voltage of the 6th resistance rises, the 6th resistance and the tenth electricity
The voltage that resistance partial pressure obtains also rises, that is, the electric current for being input to three-terminal voltage-stabilizing pipe also increases, and the electric current of photo-coupler also increases, defeated
Enter the feedback voltage reduction to control chip, reduce control chip IC output duty cycles, reduce output voltage；Conversely, when defeated
When going out voltage decline, the terminal voltage of the 6th resistance declines, and the voltage obtained by the 6th resistance and the tenth electric resistance partial pressure also declines,
The electric current for being input to three-terminal voltage-stabilizing pipe reduces, and the electric current of photo-coupler also reduces, and the feedback voltage for being input to control chip increases
Greatly, increase control chip output duty cycle, output voltage increase, so as to reach the purpose of regulated output voltage.
Fig. 2 is refer to, embodiment one of the present utility model is：
A kind of power module, is installed in distribution box, including the first current rectifying and wave filtering circuit 1, transformer B1, the second rectification filter
Wave circuit 3, control circuit 4 and feedback circuit 5, first current rectifying and wave filtering circuit 1, which includes the first current rectifying and wave filtering circuit 1, includes pressure
Quick resistance YM1, EMI circuit (being made up of inductance L1, inductance L2 and electric capacity CX1), rectifier bridge stack VC1, common mode choke CM1 and
One electric capacity C1, piezo-resistance YM1, EMI circuit, rectifier bridge stack VC1, common mode choke CM1 and the first electric capacity C1 are sequentially connected, institute
State the second current rectifying and wave filtering circuit 3 include recovery diode D4 and wave filter (by electric capacity C3, electric capacity C11, inductance L3, electric capacity C8 and
Electric capacity C12 is formed), the control circuit 4 includes being internally integrated control chip MD1, RCD absorbing circuit of metal-oxide-semiconductor (by resistance
R2, resistance R3, diode D2 and electric capacity CH1 compositions), the second electric capacity C2, commutation diode D3 and other peripheral circuits, it is described anti-
Current feed circuit includes three-terminal voltage-stabilizing pipe D5, photo-coupler U1, the 5th resistance R5, the 6th resistance R6, the 7th resistance R7, the 8th resistance
R8, the 9th resistance R9, the tenth resistance R10, the 5th electric capacity C5 and the 6th electric capacity C6.The wave filter is pi type filter.
The RCD absorbing circuits connect the first electric capacity C1 and control chip MD1, one end of the commutation diode D3 respectively
Connecting transformer B1, the other end of commutation diode connects one end of the second electric capacity and the power end of control chip respectively, and second
The other end ground connection of electric capacity.
The transformer B1, fast recovery diode D4 and wave filter are sequentially connected, the fast recovery diode D4 and filtering
The tie point of device connects the 5th resistance R5 one end, the 6th resistance R6 one end and the 7th resistance R7 one end, the 5th electricity respectively
Hinder R5 one end connection photo-coupler U1 first input end, the 8th resistance R8 connects the 6th resistance R6 other end, the respectively
Six electric capacity C6 one end, the 9th resistance R9 one end and the tenth resistance R10 one end, the 7th resistance R7 connect photo-coupler respectively
U1 the second input and the 6th electric capacity C6 other end, three-terminal voltage-stabilizing pipe D5 three ends connect the second of photo-coupler U1 respectively
The other end and ground of input, the 6th resistance R6, the 5th electric capacity C5 both ends connect photo-coupler U1 first input end respectively
With the second input, photo-coupler U1 the second input end grounding, photo-coupler U1 first input end connection control chip
MD1。
The circuit diagram of the power module of the present embodiment is illustrated in figure 2, with reference to progress of the Fig. 2 to above-mentioned power module
Principle explanation：
First current rectifying and wave filtering circuit：Piezo-resistance can connect 85-265V AC powers, and thunderbolt wave is prevented by piezo-resistance YM
Gush damage circuit, inductance L1 and inductance L2 are differential mode inductance, and electric capacity CX1 is differential mode capacitor, inductance L1, inductance L2, electric capacity CX1 groups
Into EMI suppression circuits, suppress DM EMI.Rectifier bridge stack VC1, the interference of common mode choke CM1 suppression common modes, the first electric capacity C1 are
Filter capacitor, the voltage of common mode choke CM1 outputs is filtered.
Second current rectifying and wave filtering circuit：Transformer B1 7,9 pins output voltage after fast recovery diode D4 rectifications, then
Through high-frequency electrolysis electric capacity C3, C11 filter, then obtained after inductance L3, electric capacity C8 and electric capacity C12 LPFs voltage for 5V,
The DC voltage-stabilizing that electric current is 1A exports.
Feedback circuit：When output voltage rises, resistance R6 terminal voltage rises, and resistance R6 and resistance R10 partial pressures obtain
Voltage also rise, that is, the electric current for being input to three terminal regulator TL431 also increases, and photo-coupler U1 electric current also increases, input
Feedback voltage to control chip reduces, and reduces control chip output duty cycle, reduces output voltage；When output voltage declines
When, resistance R6 terminal voltage declines, and the voltage obtained by resistance R6 and resistance R10 partial pressures also declines, that is, it is steady to be input to three ends
Depressor TL431 electric current reduces, and photo-coupler U1 electric current also reduces, and is input to the feedback voltage increase of control chip, makes control
Coremaking piece output duty cycle increases, output voltage increase, so as to reach the purpose of regulated output voltage.
Control chip circuit：Be made up of the MOS switch pipe and peripheral circuit that are internally integrated by pressure-resistant 800V, control chip with
Transformer and other circuits, which are combined, completes the functions such as high-low voltage conversion, overcurrent protection.Resistance R2, resistance R3, diode D2,
Electric capacity CH1 composition RCD circuits absorb spike, prevent the integrated metal-oxide-semiconductor of the too high damage chip internal of peak voltage.Transformer aids in
Power after winding 3,4 pin output voltages filter through diode D3 rectifications, and electric capacity C2 and give control chip MD1 power supplies.
In summary, power module provided by the utility model, steady dc voltage can be exported, and has and open entirely
Dynamic and Thermal protection turn-off function and anti-lightning surge function, also with small volume, it is in light weight, ripple is small the advantages of, and simplify
Circuit structure, reduces production cost, can be applied to being provided with the distribution box of volume requirement.
Embodiment of the present utility model is the foregoing is only, not thereby limits the scope of the claims of the present utility model, it is every
The equivalents made using the utility model specification and accompanying drawing content, or directly or indirectly it is used in the technology neck of correlation
Domain, similarly it is included in scope of patent protection of the present utility model.
Claims (6)
1. a kind of power module, is installed in distribution box, it is characterised in that including the first current rectifying and wave filtering circuit, transformer, second
Current rectifying and wave filtering circuit, control circuit and feedback circuit, the control circuit include being internally integrated the control chip of metal-oxide-semiconductor, the
One current rectifying and wave filtering circuit includes piezo-resistance, EMI circuits, rectifier bridge stack, common mode choke and the first electric capacity, piezo-resistance, EMI
Circuit, rectifier bridge stack, common mode choke and the first electric capacity are sequentially connected, first electric capacity, transformer and the second rectification circuit
It is sequentially connected, feedback circuit connects the second current rectifying and wave filtering circuit and control chip respectively, and control chip connects described first respectively
Electric capacity and the second current rectifying and wave filtering circuit, the piezo-resistance are used to connect AC power.
2. power module according to claim 1, it is characterised in that the control circuit also includes RCD absorbing circuits, institute
State RCD absorbing circuits and connect the first electric capacity and control chip respectively.
3. power module according to claim 2, it is characterised in that the control circuit also includes the second electric capacity and rectification
Diode, one end connection transformer of the commutation diode, the other end of commutation diode connect the one of the second electric capacity respectively
End and the power end of control chip, the other end ground connection of the second electric capacity.
4. power module according to claim 1, it is characterised in that second current rectifying and wave filtering circuit includes fast recovery two
Pole pipe and wave filter, the transformer, fast recovery diode and wave filter are sequentially connected, the fast recovery diode and wave filter
Tie point connection feedback circuit.
5. power module according to claim 4, it is characterised in that the wave filter is pi type filter.
6. power module according to claim 4, it is characterised in that the feedback circuit includes three-terminal voltage-stabilizing pipe, optocoupler
Clutch, the 5th resistance, the 6th resistance, the 7th resistance, the 8th resistance, the 9th resistance, the tenth resistance, the 5th electric capacity and the 6th electricity
Hold, the tie point of the fast recovery diode and wave filter connects one end of the 5th resistance, one end of the 6th resistance and the respectively
One end of seven resistance, the first input end of one end connection photo-coupler of the 5th resistance, the 8th resistance connect the 6th resistance respectively
The other end, one end, one end of the 9th resistance and one end of the tenth resistance of the 6th electric capacity, the 7th resistance connects optical coupling respectively
Second input of device and the other end of the 6th electric capacity, three ends of three-terminal voltage-stabilizing pipe connect the second input of photo-coupler respectively
End, the other end and ground of the 6th resistance, the both ends of the 5th electric capacity connect first input end and the second input of photo-coupler respectively
End, the second input end grounding of photo-coupler, the first input end connection control chip of photo-coupler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721091080.1U CN207083022U (en) | 2017-08-29 | 2017-08-29 | A kind of power module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721091080.1U CN207083022U (en) | 2017-08-29 | 2017-08-29 | A kind of power module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207083022U true CN207083022U (en) | 2018-03-09 |
Family
ID=61421132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721091080.1U Active CN207083022U (en) | 2017-08-29 | 2017-08-29 | A kind of power module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207083022U (en) |
-
2017
- 2017-08-29 CN CN201721091080.1U patent/CN207083022U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209787042U (en) | Switch power supply charging circuit | |
| CN111509825A (en) | 45W broadband voltage self-adaptation PPS super portable power source structure that fills soon | |
| CN101408789B (en) | Computer power supply | |
| CN205610491U (en) | A power adapter for 60W crystal lamp | |
| CN203167379U (en) | An isolated driving power supply of a LED fluorescent lamp | |
| CN209881475U (en) | Small-size switching power supply charging circuit | |
| CN207083022U (en) | A kind of power module | |
| CN209913557U (en) | Switch power supply charging circuit capable of intelligently outputting | |
| CN217427719U (en) | Multi-protocol quick charging circuit and device | |
| CN202696482U (en) | Power supply circuit for leakage circuit breaker | |
| CN203180773U (en) | Passive intelligent power distribution apparatus | |
| CN211405888U (en) | Double-output switching power supply circuit | |
| CN205265546U (en) | Power adapter | |
| CN205681285U (en) | The self-powered circuit of non-isolated booster circuit pwm chip | |
| CN206272337U (en) | A kind of power supply circuit for 12V uninterrupted power sources | |
| CN203537248U (en) | Wide-input AC/DC power supply converter provided with PFC function | |
| CN206775206U (en) | Mains charger circuit | |
| CN208143097U (en) | A kind of multifunctional power adapter of band USB and socket output | |
| CN209283087U (en) | Efficient filtering circuit and power supply output system | |
| CN208316590U (en) | A kind of novel LWD host PFC correction regulated power supply system | |
| CN202475261U (en) | Power supply circuit of motor protector | |
| CN201947188U (en) | Power supply of switch | |
| CN207410238U (en) | LED drive power and LED display device | |
| CN206727875U (en) | A kind of cable working power adjusting means | |
| CN206195630U (en) | AC DC power adapter circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |