CN206517382U - One kind improves PSR output dynamic load potential circuits - Google Patents
One kind improves PSR output dynamic load potential circuits Download PDFInfo
- Publication number
- CN206517382U CN206517382U CN201720150949.9U CN201720150949U CN206517382U CN 206517382 U CN206517382 U CN 206517382U CN 201720150949 U CN201720150949 U CN 201720150949U CN 206517382 U CN206517382 U CN 206517382U
- Authority
- CN
- China
- Prior art keywords
- divider resistance
- resistance
- circuit
- output
- amplifier
- 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
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Improve PSR output dynamic load potential circuits, including division module, fictitious load and " 431 circuit " the utility model discloses one kind；The division module is made up of divider resistance R2 and divider resistance R3；" 431 circuit " includes being connected in transistor collector and the diode D1 at emitter stage two ends, and the amplifier with triode Q1 base stage electric connection in parallel；The fictitious load is resistance R1；Resistance R1 one end connecting triode Q1 colelctor electrode, other end connection Output output ends and divider resistance R2；Amplifier "+" end is accessed in divider resistance R3 one end connecting triode Q1 emitter stages, the divider resistance R3 other ends and divider resistance R2 one end simultaneously；" " end of amplifier is electrically connected with Vref ends.The utility model increases dynamic load compensated line in traditional PS R secondary output ends, and empirical tests have clear improvement to dynamic output voltage, can pass through MFI ATS tests, and the circuit does not influence charger efficiency, environmental protection and energy saving.
Description
Technical field
The utility model is related to a kind of circuit, and in particular to one kind improves PSR output dynamic load potential circuits.
Background technology
Switching Power Supply is one of indispensable accessory of each electronic product, and especially iPhone and flat board market shipment amount is huge
Greatly, the power supply with apple has to obtain MFI certifications, and only SSR schemes can just meet ATS tests at present, and cost is too high, no
Possesses advantage.
Existing PSR schemes, the simple price of circuit is excellent, but voltage accuracy can only accomplish 10% or so under dynamic load, or
Person is worse, can not meet some to input voltage required precision high product application.
Utility model content
The purpose of this utility model is that providing a kind of PSR that improves exports dynamic load potential circuit, in R level of traditional PS
Output end increases dynamic load compensated line, and empirical tests have clear improvement to dynamic output voltage, can pass through MFI's
ATS is tested, and the circuit does not influence charger efficiency, environmental protection and energy saving.
To achieve the above object, the utility model provides following technical scheme：One kind improves PSR output dynamic load voltages
Circuit, including division module, fictitious load and " 431 circuit "；The division module is made up of divider resistance R2 and divider resistance R3；
" 431 circuit " includes being connected in transistor collector and the diode D1 at emitter stage two ends in parallel, and with triode Q1
Base stage be electrically connected with amplifier；The fictitious load is resistance R1；It is resistance R1 one end connecting triode Q1 colelctor electrode, another
End connection Output output ends and divider resistance R2；Divider resistance R3 one end connecting triode Q1 emitter stages, divider resistance R3 are another
Amplifier "+" end is accessed in one end simultaneously with divider resistance R2 one end；The "-" end of amplifier is electrically connected with Vref ends.
Further, the triode Q1 grounded emitters.
Compared with prior art, the beneficial effects of the utility model are：The utility model increases in traditional PS R secondary output ends
Plus dynamic load compensated line, empirical tests have clear improvement to dynamic output voltage, can pass through MFI ATS tests, and
The circuit does not influence charger efficiency, environmental protection and energy saving.
Brief description of the drawings
Fig. 1 is circuit connection structure schematic diagram of the present utility model.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belongs to the scope of the utility model protection.
Referring to Fig. 1, the utility model provides a kind of structure technology scheme：One kind improves PSR output dynamic load voltages
Circuit, including division module A, fictitious load B and " 431 circuit " C；The division module A is by divider resistance R2 and divider resistance R3
Composition；" 431 circuit " C includes the diode D1, Yi Jiyu for being connected in triode Q1 collector and emitters two ends in parallel
The amplifier that triode Q1 base stage is electrically connected with；The fictitious load B is resistance R1；Resistance R1 one end connecting triode Q1 collection
Electrode, other end connection Output output ends and divider resistance R2；Divider resistance R3 one end connecting triode Q1 emitter stages, partial pressure
The resistance R3 other ends access amplifier "+" end simultaneously with divider resistance R2 one end；The "-" end of amplifier is electrically connected with Vref ends.
Further, the triode Q1 grounded emitters.
Operation principle of the present utility model is：
Using 431 working characteristics, calculating partial pressure resistance R2, R3 parameter are electric to set an acceptable maximum clamper
Vout_clamp is pressed, the clamp voltage is typically larger than charger rated output voltage, when output current of charger dynamic change,
Charger output voltage can be because fluctuating above and below system response time, and now the clamp circuit works, and operation principle is as follows：
When dynamic load is tested, when output voltage is less than or equal to Vout_clamp, partial pressure to the current potential of D points is less than or equal to
431 reference voltage Vrefs, now amplifier output low level, internal NPN triode is in OFF state, and at this moment the clamper circuit is not
Work；
When dynamic load is tested, when output voltage is more than Vout_clamp, the current potential of partial pressure to D points is more than 431 references
Voltage Vref, now amplifier output high level, internal NPN triode is in ON states, at this moment gone here and there above transistor collector
Equivalent to one fictitious load of small valued resistor introduce circuit, it is to avoid output voltage overshoot is too high during dynamic test causes ATS to survey
Try fail.
While there has been shown and described that embodiment of the present utility model, for the ordinary skill in the art,
It is appreciated that these embodiments can be carried out in the case where not departing from principle of the present utility model and spirit a variety of changes, repaiies
Change, replace and modification, scope of the present utility model is defined by the appended claims and the equivalents thereof.
Claims (2)
1. one kind improves PSR output dynamic load potential circuits, including division module (A), fictitious load (B) and " 431 circuit "
(C)；It is characterized in that：The division module (A) is made up of divider resistance R2 and divider resistance R3；" 431 circuit " (C) is wrapped
The diode D1 for being connected in triode Q1 collector and emitters two ends in parallel is included, and is electrically connected with triode Q1 base stage
Amplifier；The fictitious load (B) is resistance R1；Resistance R1 one end connecting triode Q1 colelctor electrode, other end connection
Output output ends and divider resistance R2；Divider resistance R3 one end connecting triode Q1 emitter stages, the divider resistance R3 other ends with
Amplifier "+" end is accessed in divider resistance R2 one end simultaneously；The "-" end of amplifier is electrically connected with Vref ends.
2. a kind of PSR that improves according to claim 1 exports dynamic load potential circuit, it is characterised in that：Three pole
Pipe Q1 grounded emitters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720150949.9U CN206517382U (en) | 2017-02-20 | 2017-02-20 | One kind improves PSR output dynamic load potential circuits |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720150949.9U CN206517382U (en) | 2017-02-20 | 2017-02-20 | One kind improves PSR output dynamic load potential circuits |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206517382U true CN206517382U (en) | 2017-09-22 |
Family
ID=59867872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720150949.9U Active CN206517382U (en) | 2017-02-20 | 2017-02-20 | One kind improves PSR output dynamic load potential circuits |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206517382U (en) |
-
2017
- 2017-02-20 CN CN201720150949.9U patent/CN206517382U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103687245B (en) | The LED drive circuit and controller thereof and driving method of being with PFC are fed back in the former limit of isolated form | |
| CN105991018B (en) | Circuit of power factor correction, multiplier and electric voltage feed forward circuit | |
| CN208819107U (en) | Voltage regulating circuit, adjustable output voltage circuit and electrical equipment | |
| CN203759106U (en) | Commercial power zero cross detection circuit | |
| CN203574531U (en) | A mos transistor drive circuit based on high-frequency oscillation signals | |
| CN203365653U (en) | Low-cost battery electric quantity detection circuit | |
| CN100414810C (en) | Voltage identification short circuit protection constant current voltage stabilizing circuit | |
| CN206517382U (en) | One kind improves PSR output dynamic load potential circuits | |
| CN203658414U (en) | Cell simulation circuit | |
| CN202424498U (en) | Protection circuit applicable to PWM (pulse-width modulation) power control circuit | |
| CN203618195U (en) | Isolated type primary-side feedback LED drive circuit having PFC and controller thereof | |
| CN211878070U (en) | Test module | |
| CN204945250U (en) | A kind of measurement mechanism of accumulator internal resistance | |
| CN104333092A (en) | Charger system for testing battery starting current | |
| CN204244532U (en) | A kind of LDO circuit for LED driver | |
| CN204103765U (en) | A kind of battery simulator | |
| CN202276285U (en) | Power supply filter circuit used for stored program control exchange | |
| CN204967620U (en) | Be used for IGBT driven power supply circuit | |
| CN201440168U (en) | E-load machine | |
| CN103091543B (en) | Current detection circuit, constant current circuit and battery charging and discharging protective system | |
| CN204256574U (en) | Regulating circuit, circuit board and printer | |
| CN201780313U (en) | Adjustable resistor type testing device | |
| CN204304488U (en) | A kind of charger system of start battery testing current | |
| CN211826266U (en) | Surge tester | |
| CN202424513U (en) | Cascaded voltage stabilizing circuit used for power circuit of small power type |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No. 365, Dongkeng Avenue South, Dongkeng Town, Dongguan City, Guangdong Province, 523000 Patentee after: Meispu Electronics Co.,Ltd. Address before: No. 365, Dongkeng Avenue South, Dongkeng Town, Dongguan City, Guangdong Province, 523000 Patentee before: DONGGUAN CITY MAISI PU ELECTRONICS CO.,LTD. |
|
| CP01 | Change in the name or title of a patent holder |