CN206195630U - AC DC power adapter circuit - Google Patents
AC DC power adapter circuit Download PDFInfo
- Publication number
- CN206195630U CN206195630U CN201621271015.2U CN201621271015U CN206195630U CN 206195630 U CN206195630 U CN 206195630U CN 201621271015 U CN201621271015 U CN 201621271015U CN 206195630 U CN206195630 U CN 206195630U
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- electric capacity
- resistance
- diode
- chip
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Abstract
The utility model discloses a AC DC power adapter circuit, including the fuse, switch S, diode D1, resistance R1, electric capacity C1, transformer T, chip IC1, chip IC2 and inductance L1, input voltage vi is connected to fuse F one end, and other end linked switch S, switch S1 connect diode D1, diode D2, and diode D3 and diode D4, diode D2 connecting resistance R1, resistance R1 connects transformer T's primary winding, electric capacity C1 connecting resistance R1 and resistance R2, resistance R2 connect electric capacity C2 and electric capacity C3, electric capacity C3 connecting resistance R3, the common port of resistance R3 connection transformer T's primary winding and chip IC1's D pin, the utility model discloses AC DC power adapter circuit utilizes feedback circuit from DC output to control chip IC1, by chip IC1 stable control, has the low power dissipation, and the pick -up current is little, stabilization of output's characteristics, and its performance is good, and interference immunity is strong, especially adapted using widely.
Description
Technical field
The utility model is related to a kind of power circuit, specifically a kind of AC-DC power adapter circuits.
Background technology
With the high speed development of semiconductor technology, back-pressure fast switching transistor high makes the Switching Power Supply of no industrial frequency transformer
It is rapid practical, and semiconductor integrated circuit technology is developed rapidly as the integrated of switching power source control circuit has established base
Plinth, the integrated switch voltage-stablizer for adapting to all kinds of Switching Power Supply control requirements arises at the historic moment, its function constantly improve, integrated level
Also improve constantly, outward element is fewer and feweri so that design, production and the adjustment work of Switching Power Supply increasingly simplify, cost
Constantly decline, the perfect integrated switch voltage-stablizer series of types of functionality has been formd at present, in recent years the high-power pipes of back-pressure MOS high
Develop rapidly, power supply adaptor is power adaptation translation interface, and existing power supply adaptor has a many kinds, but existing electricity
Source adapter security is low, spread of voltage.
Utility model content
The purpose of this utility model is to provide a kind of AC-DC power adapter circuits, with solving above-mentioned background technology
The problem of proposition.
To achieve the above object, the utility model provides following technical scheme：
A kind of AC-DC power adapter circuits, including fuse, switch S, diode D1, resistance R1, electric capacity C1, transformation
Device T, chip IC 1, chip IC 2 and inductance L1；Described fuse F one end connects input voltage Vi, other end connecting valve S, opens
S1 connections diode D1, diode D2, diode D3 and diode D4 are closed, diode D2 connection resistance R1, resistance R1 connections become
The armature winding of depressor T；The electric capacity C1 connects resistance R1 and resistance R2, resistance R2 connections electric capacity C2 and electric capacity C3, electric capacity C3
The common port of the armature winding of connection resistance R3, resistance R3 connection transformer T and the D pins of chip IC 1；The chip IC 1
EN pins connect the left end of chip IC 2, BP pins connection electric capacity C4, S pin connection electric capacity C3 and electric capacity C4；The chip IC 2 connects
Connect the common port of electric capacity C5, diode D6 and inductance L1 and diode D5；The secondary windings of the transformer T is sequentially connected two poles
Pipe D5, electric capacity C6, inductance L1 and electric capacity C7.
As further program of the utility model：The model TNY254P of the chip IC 1.
As further program of the utility model：The model LTV817 of the chip IC 2.
Compared with prior art, the beneficial effects of the utility model are：
The utility model AC-DC power adapter circuits, using feedback circuit from DC output end to control chip IC1,
By the stability contorting of chip IC 1, with low in energy consumption, starting current is small, and the characteristics of output voltage stabilization, its performance is good, anti-interference
By force, it is especially suitable for promoting the use of.
Brief description of the drawings
Fig. 1 is the structural representation of AC-DC power adapter circuits.
Specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model example is carried out clearly
Chu, it is fully described by.
Fig. 1, a kind of AC-DC power adapter circuits, including fuse are referred to, S, diode D1, resistance R1, electricity is switched
Hold C1, transformer T, chip IC 1, chip IC 2 and inductance L1；Described fuse F one end connects input voltage Vi, other end connection
Switch S, switch S1 connect diode D1, diode D2, diode D3 and diode D4, diode D2 connection resistance R1, resistance
The armature winding of R1 connection transformers T；The electric capacity C1 connects resistance R1 and resistance R2, resistance R2 connection electric capacity C2 and electric capacity
C3, electric capacity C3 connect the common port of resistance R3, the armature winding of resistance R3 connection transformers T and the D pins of chip IC 1；It is described
The EN pins connection left end of chip IC 2 of chip IC 1, BP pins connection electric capacity C4, S pin connection electric capacity C3 and electric capacity C4；It is described
Chip IC 2 connects the common port of electric capacity C5, diode D6 and inductance L1 and diode D5；The secondary windings of the transformer T according to
Secondary connection diode D5, electric capacity C6, inductance L1 and electric capacity C7；The model TNY254P of chip IC 1, the model of chip IC 2
LTV817。
Operation principle of the present utility model is：Refer to Fig. 1, the utility model AC-DC power adapter circuits, the circuit
Using two panels IC：The end single-chip switching power supply of TNY254P types four, LTV817 type photo-couplers, 85-265V alternating currents by D1-D4,
Electric capacity C1, after electric capacity C2 rectifying and wave-filterings, produces high direct voltage, and F is fuse, can also be replaced with protective tube, EMI Filtering
By electric capacity C1, resistance R1, resistance R2, electric capacity C2 composition replace filter inductance to device with resistance here, to reduce circuit cost,
R3 and C3 can absorb the peak voltage on draining and reduces electromagnetic interference, and C4 is shunt capacitance, and secondary winding voltage is by two poles
Pipe D5, electric capacity C6, inductance L1 and electric capacity C7 rectifying and wave-filterings, export 9V voltages, and photo-coupler LTV817 and voltage-stabiliser tube D6 is used to examine
Survey output voltage and feed back to chip TNY254P.
It is obvious to a person skilled in the art that the utility model is not limited to the details of above-mentioned one exemplary embodiment, and
And in the case of without departing substantially from spirit or essential attributes of the present utility model, can realize that this practicality is new with other concrete forms
Type.Therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary, and is nonrestrictive, this practicality is new
The scope of type limits by appended claims rather than described above, it is intended that the equivalency fallen in claim is contained
The all changes of justice and scope are included in the utility model.Any reference in claim should not be considered as limitation involved
And claim, although moreover, it will be appreciated that the present specification is described in terms of embodiments, not each embodiment party
Formula only includes an independent technical scheme, and this narrating mode of specification is only people in the art for clarity
Member should be using specification an as entirety, and the technical scheme in each embodiment can also be through appropriately combined, form this area skill
Art personnel may be appreciated other embodiment.
Claims (3)
1. a kind of AC-DC power adapter circuits, including fuse, switch S, diode D1, resistance R1, electric capacity C1, transformer
T, chip IC 1, chip IC 2 and inductance L1, it is characterised in that described fuse F one end connects input voltage Vi, other end connection
Switch S, switch S1 connect diode D1, diode D2, diode D3 and diode D4, diode D2 connection resistance R1, resistance
The armature winding of R1 connection transformers T；The electric capacity C1 connects resistance R1 and resistance R2, resistance R2 connection electric capacity C2 and electric capacity
C3, electric capacity C3 connect the common port of resistance R3, the armature winding of resistance R3 connection transformers T and the D pins of chip IC 1；It is described
The EN pins connection left end of chip IC 2 of chip IC 1, BP pins connection electric capacity C4, S pin connection electric capacity C3 and electric capacity C4；It is described
Chip IC 2 connects the common port of electric capacity C5, diode D6 and inductance L1 and diode D5；The secondary windings of the transformer T according to
Secondary connection diode D5, electric capacity C6, inductance L1 and electric capacity C7.
2. AC-DC power adapter circuits according to claim 1, it is characterised in that the model of the chip IC 1
TNY254P。
3. AC-DC power adapter circuits according to claim 1, it is characterised in that the model of the chip IC 2
LTV817。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621271015.2U CN206195630U (en) | 2016-11-24 | 2016-11-24 | AC DC power adapter circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621271015.2U CN206195630U (en) | 2016-11-24 | 2016-11-24 | AC DC power adapter circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206195630U true CN206195630U (en) | 2017-05-24 |
Family
ID=58724767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621271015.2U Expired - Fee Related CN206195630U (en) | 2016-11-24 | 2016-11-24 | AC DC power adapter circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206195630U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022007617A1 (en) * | 2020-07-10 | 2022-01-13 | Oppo广东移动通信有限公司 | Power adapter |
-
2016
- 2016-11-24 CN CN201621271015.2U patent/CN206195630U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022007617A1 (en) * | 2020-07-10 | 2022-01-13 | Oppo广东移动通信有限公司 | Power adapter |
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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 |
Granted publication date: 20170524 Termination date: 20171124 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |