CN206341148U - Improve the low standby power circuit of cross regulation rate - Google Patents
Improve the low standby power circuit of cross regulation rate Download PDFInfo
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- CN206341148U CN206341148U CN201621376584.3U CN201621376584U CN206341148U CN 206341148 U CN206341148 U CN 206341148U CN 201621376584 U CN201621376584 U CN 201621376584U CN 206341148 U CN206341148 U CN 206341148U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Abstract
The utility model is related to low standby power circuit, and the utility model solves the problem of household appliances stand-by power consumption is high, proposes a kind of low standby power circuit, and its scheme is：Including switch transformer, primary side absorbing circuit, power supply chip controls circuit, main output feedback circuit, auxiliary output circuit, microprocessor, microprocessor controlling switch circuit, low differential voltage linear voltage stabilizer circuit and cross regulation rate improve circuit, the switch transformer primary side connects primary side absorbing circuit and power supply chip control circuit respectively, secondary side connects main output feedback circuit and auxiliary output circuit respectively, microprocessor controlling switch circuit connects main output feedback circuit, low differential voltage linear voltage stabilizer circuit connects auxiliary output circuit, microprocessor connects microprocessor controlling switch circuit and low differential voltage linear voltage stabilizer circuit respectively.And in order to ensure the normal power supply of microprocessor, propose that a kind of cross regulation rate improves circuit.The beneficial effects of the utility model are, simple in construction, standby effect clearly, and system working stability, it is adaptable to household appliances.
Description
Technical field
The utility model is related to energy-saving electric power technology, more particularly to improves the low standby power circuit skill of cross regulation rate
Art.
Background technology
Power supply is each electronic equipment, the indispensable important component of household appliances, however Switching Power Supply again because its
Efficiency high, small volume, low cost, and be widely used.
At present, each one problem of household appliances generally existing, standby power is very high, many even up to number more than W.Because
Substantial amounts of household appliances are in holding state for a long time, cause the huge waste of the energy.Current most of use Switching Power Supplies
Household appliances due to technical reason, in the standby state, because not completely cutting through other electricity beyond power supply of microprocessor
Source, makes many circuits still in power consumption state, causes standby power still very high.With the release of the new energy consumption standard of country,
Stand-by power consumption it is also proposed and clearly require, in the future to the stand-by power consumption requirement of white (black) the color household appliances such as refrigerator, air-conditioning
Also will be increasingly harsher.In response to national energy-saving, environmental protection policy, the standby power of reduction household appliances will become as one
Gesture, higher energy consumption standard will also be released.
In addition, the characteristic based on inverse-excitation type switch power-supply, the loading condition on the main output road of Switching Power Supply in itself can influence auxiliary
The output voltage (being referred to as cross regulation rate) of winding is exported, causes the output voltage of auxiliary output winding to deviate target voltage, influence
The normal operation of system.
Utility model content
The purpose of this utility model is to propose a kind of low standby power circuit of improvement cross regulation rate, solves household appliances
The problem of stand-by power consumption is high, meanwhile, in order to ensure the normal power supply of microprocessor, propose that a kind of cross regulation rate improves circuit.
The utility model solves its technical problem, and the technical scheme of use is：Improve the low standby power of cross regulation rate
Circuit, including switch transformer, primary side absorbing circuit, power supply chip control circuit, main output feedback circuit, auxiliary output circuit,
Microprocessor, microprocessor controlling switch circuit, low differential voltage linear voltage stabilizer circuit and cross regulation rate improve circuit, described to open
Close transformer primary side and connect primary side absorbing circuit and power supply chip control circuit respectively, secondary side connects main output feedback respectively
Circuit and auxiliary output circuit, microprocessor controlling switch circuit connect main output feedback circuit, low differential voltage linear voltage stabilizer circuit
Auxiliary output circuit is connected, microprocessor connects microprocessor controlling switch circuit and low differential voltage linear voltage stabilizer circuit respectively, handed over
Pitching regulation improves the main output feedback circuit of circuit on one side connection, and the other end connects auxiliary output circuit respectively and low pressure difference linearity is steady
Transformer circuits.
The switch transformer is flyback transformer, wherein, it is the primary side port five of transformer, secondary end port six, secondary
Level end port one and secondary end port two are Same Name of Ends.
The switch transformer is model STR-A6059H transformer.
The auxiliary output circuit includes diode four, electric capacity eight and ground wire, and the anode connecting valve of the diode four becomes
Depressor secondary end port two, negative electrode connection low differential voltage linear voltage stabilizer circuit, the positive terminal of electric capacity eight connects the moon of diode four
Pole, negative pole end connection ground wire.
The microprocessor controlling switch circuit includes electric capacity six, resistance 11, triode two, triode three and ground wire,
The emitter stage of the triode connects main output feedback circuit, and base stage connects one end of resistance 11, the other end of resistance 11
The colelctor electrode of connecting triode three, the emitter stage connection ground wire of triode three, base stage connection microprocessor, the positive terminal of electric capacity six
The colelctor electrode of connecting triode two, negative pole end connection ground wire.
The low differential voltage linear voltage stabilizer circuit includes three terminal regulator, electric capacity ten, electric capacity 11 and ground wire, three end
The output pin connection microprocessor of voltage-stablizer, grounding pin connection ground wire, the positive terminal connection three terminal regulator of electric capacity ten
Output pin, negative pole end connection ground wire, one end of electric capacity 11 connects the output end of three terminal regulator, other end connection ground wire.
The cross regulation rate, which improves circuit, includes triode one, resistance seven and voltage-stabiliser tube, the transmitting of the triode one
Pole connects main output feedback circuit, and colelctor electrode connects auxiliary output circuit, and base stage connects the positive pole of voltage-stabiliser tube, and one end of resistance seven connects
The negative pole of voltage-stabiliser tube is connect, the other end connects auxiliary output circuit and low-dropout regulator linear regulator circuit respectively.
The triode one is PNP triode, and triode two is PNP triode, and triode three is NPN triode.
The beneficial effects of the utility model are, by the low standby power circuit of above-mentioned improvement cross regulation rate, not only may be used
So that the standby effect of household appliances is clearly, and systematic microprocessor normal power supply can be made, it is ensured that the stability of system,
Circuit easily realizes that practicality is very strong, it is to avoid household appliances are standby for a long time to cause power consumption high, so as to cause the huge of the energy
The problem of big waste.
Brief description of the drawings
Fig. 1 is embodiment circuit structure diagram.
Fig. 2 is circuit theory diagrams of the present utility model.
Wherein, 1 be switch transformer secondary end port one, 2 be switch transformer secondary end port two, 3 for switch become
Depressor secondary end port three, 4 be switch transformer primary side port four, and 5 be switch transformer primary side port five, and 6 be switch
Primary end port six, 7 be switch transformer primary side port seven, and C1 is electric capacity one, and C2 is electric capacity two, and C3 is electric capacity,
C4 is electric capacity four, and C5 is electric capacity five, and C6 is electric capacity six, and C7 is electric capacity seven, and C8 is electric capacity eight, and C9 is electric capacity nine, and C10 is electric capacity
Ten, C11 are electric capacity 11, and CY1 is Y capacitance, and R1 is resistance one, and R2 is resistance two, and R3 is resistance three, and R4 is resistance four, and R5 is
Resistance five, R6 is resistance six, and R7 is resistance seven, and R8 is resistance eight, and R10 is resistance ten, and R11 is resistance 11, and D1 is diode
One, D2 are diode two, and D3 is diode three, and D4 is diode four, and ZD1 is voltage-stabiliser tube, and V1 is PNP triode one, and V2 is PNP
Triode two, V3 is NPN triode three, and U1 is accurate integrated regulator, and U2 is power supply chip, and N1A is photoelectrical coupler
Light emitting diode, N1B is the phototriode of photoelectrical coupler, and U3 is three terminal regulator, and IN is three terminal regulator U3 input
Pin is held, OUT is the output pin of three terminal regulator, and GND is the grounding pin of three terminal regulator.
Embodiment
Below in conjunction with the accompanying drawings and embodiment, the technical solution of the utility model is described in detail.
The low standby power electric routing switch transformer described in the utility model for improving poor regulation, primary side absorb electricity
Road, power supply chip control circuit, main output feedback circuit, auxiliary output circuit, microprocessor, microprocessor controlling switch circuit,
Low differential voltage linear voltage stabilizer circuit and cross regulation rate improve circuit composition, wherein, switch transformer primary side connects original respectively
Side absorbing circuit and power supply chip control circuit, secondary side connect main output feedback circuit and auxiliary output circuit, microprocessor respectively
Device controlling switch circuit connects main output feedback circuit, and low differential voltage linear voltage stabilizer circuit connects auxiliary output circuit, microprocessor
Microprocessor controlling switch circuit and low differential voltage linear voltage stabilizer circuit are connected respectively, and cross regulation rate improves circuit on one side connection
Main output feedback circuit, the other end connects auxiliary output circuit and low differential voltage linear voltage stabilizer circuit respectively, its circuit theory diagrams ginseng
See Fig. 2.Here, the power supply output of heavier loads can be switched on or off by a microprocessor control signals, when system is judged to
When being set to normal operating conditions, microprocessor control signals connect heavily loaded out-put supply；When system is judged as holding state
When, microprocessor control signals cut off heavily loaded out-put supply；Either normal work or holding state, are incited somebody to action individually from switch
Transformer is drawn winding all the way and powered to systematic microprocessor, and normal output all the time, further, since load is very light, can cause
Output voltage is reduced, it is impossible to ensure the normal power supply of microprocessor, so between main output feedback circuit and auxiliary output circuit
Adding a cross regulation rate improves circuit, when main output feedback circuit output voltage reduction, will open cross regulation rate and changes
Kind circuit, is powered by the main feedback circuit that export to auxiliary output circuit, it is ensured that auxiliary output circuit, which is exported, is unlikely to too low, influence to
Microprocessor power supply.
Embodiment
The low standby power circuit that the utility model embodiment improves cross regulation rate includes switch transformer, primary side absorption
Circuit, power supply chip control circuit, main output feedback circuit, auxiliary output circuit, microprocessor, microprocessor controlling switch electricity
Road, low differential voltage linear voltage stabilizer circuit and cross regulation rate improve circuit, wherein, switch transformer primary side connects primary side respectively
Absorbing circuit and power supply chip control circuit, secondary side connect main output feedback circuit and auxiliary output circuit, microprocessor respectively
Controlling switch circuit connects main output feedback circuit, and low differential voltage linear voltage stabilizer circuit connects auxiliary output circuit, microprocessor point
Lian Jie not microprocessor controlling switch circuit and low differential voltage linear voltage stabilizer circuit, cross regulation rate improvement circuit on one side connection master
Export feedback circuit, the other end connects auxiliary output circuit and low differential voltage linear voltage stabilizer circuit respectively, its circuit structure diagram referring to
Fig. 1.
In foregoing circuit, switch transformer is flyback transformer, wherein, the primary side port 55 of transformer, secondary end end
Mouth 66, secondary end port 1 and secondary end port 22 are Same Name of Ends；Switch transformer is model STR-A6059H transformation
Device；Auxiliary output circuit includes the D4 of diode four, the C8 of electric capacity eight and ground wire, wherein, the D4 of diode four anode connecting valve transformation
Device secondary end port two, negative electrode connection low differential voltage linear voltage stabilizer circuit, the C8 of electric capacity eight positive terminal connection diode four D4's
Negative electrode, negative pole end connection ground wire；Microprocessor controlling switch circuit include the C6 of electric capacity six, the R11 of resistance 11, the V2 of triode two,
The V3 of triode three and ground wire, wherein, the V2 of triode two emitter stage connects main output feedback circuit, base stage connection resistance 11
R11 one end, the R11 of resistance 11 V3 of other end connecting triode three colelctor electrode, the V3 of triode three emitter stage connection ground
Line, base stage connection microprocessor, the C6 of electric capacity six V2 of positive terminal connecting triode two colelctor electrode, negative pole end connection ground wire；Three
The V2 of pole pipe two is PNP triode, and the V3 of triode three is NPN triode；Low differential voltage linear voltage stabilizer circuit includes three terminal regulator
U3, the C10 of electric capacity ten, the C11 of electric capacity 11 and ground wire, wherein, three terminal regulator U3 output pin OUT connection microprocessors connect
Ground pin GND connection ground wires, the C10 of electric capacity ten positive terminal connection three terminal regulator U3 output pin OUT, negative pole end connection ground
Line, the C11 of electric capacity 11 one end connection three terminal regulator U3 output pin OUT, other end connection ground wire；Cross regulation rate changes
Kind circuit includes the V1 of triode one, the R7 of resistance seven and voltage-stabiliser tube ZD1, wherein, the V1 of the triode one main output of emitter stage connection is anti-
Current feed circuit, colelctor electrode connects auxiliary output circuit, base stage connection voltage-stabiliser tube ZD1 positive pole, the R7 of resistance seven one end connection voltage-stabiliser tube
ZD1 negative pole, the other end connects auxiliary output circuit.
When embodiment circuit works, switch transformer controls the effect of circuit by power supply chip, by high-tension side direct current
Electricity is converted into the direct current of low-voltage；Primary side absorbing circuit absorbs the peak voltage in the primary side winding course of work, to reduce EMI
Interference；Energy rectifying and wave-filtering after transformer transformation is exported 12V direct currents by main output feedback circuit, normal work need to
It is outer that larger load current is provided, in order to export stabilization, it regard 12V outputs as feedback reference；Auxiliary output circuit becomes transformer
Energy rectifying and wave-filtering after pressure, exports 7.5V direct currents, and export defeated to low differential voltage linear voltage stabilizer circuit progress secondary pressure
Go out 5V to power to systematic microprocessor；Microprocessor controlling switch circuit can control it to turn on and off by systematic microprocessor
The passage that main output 12V outwards powers.
When the systems are operating normally, main output feedback circuit output 12V voltages, the circuit to some heavier loads is powered,
Auxiliary output circuit exports 7.5V voltages, and 7.5V, which export, to be exported 5V by low differential voltage linear voltage stabilizer circuit and give microprocessor portion confession
Electricity；When system is in holding state, can by microprocessor control cut-out, 12V is main exports the passage powered to heavy duty, bear
The circuit part power consumption of load-carrying is reduced to 0, and the 7.5V output voltages of auxiliary output circuit pass through low differential voltage linear voltage stabilizer circuit in addition
5V voltages are exported still to microprocessor power supply, meanwhile, when supplying channels outside 12V are cut off, the main outputs of 12V are not almost born
Carry, Switching Power Supply, which will reduce switching frequency, even reduces duty cycle of switching, this will cause auxiliary output 7.5V voltages to reduce, voltage mistake
Low to influence to power to systematic microprocessor, when auxiliary output 7.5V voltages are reduced to 7V, voltage-stabiliser tube ZD1 will be breakdown, and three
The V1 of pole pipe one will be turned on, and the main 12V that exports will be powered by the V1 of triode one to auxiliary output 7.5V, to ensure systematic microprocessor just
Often work.
Because the power consumption of microprocessor portion is relatively low, the circuit power of load weight is cut off, and whole system only has microprocessor
Device will be substantially reduced also in stand-by operation state, system standby power.Through actual measurement, in stand-by mode, total input 0.1W's
In the case of, the 5V voltages exported by low differential voltage linear voltage stabilizer circuit can the load with 10mA；Work(when power supply is definitely unloaded
Rate loss only has 30mW.
Claims (8)
1. improve the low standby power circuit of cross regulation rate, including the control of switch transformer, primary side absorbing circuit, power supply chip
Circuit, main output feedback circuit, auxiliary output circuit, microprocessor, microprocessor controlling switch circuit, low pressure difference linear voltage regulator
Circuit and cross regulation rate improve circuit, and the switch transformer primary side connects primary side absorbing circuit and power supply chip control respectively
Circuit processed, secondary side connects main output feedback circuit and auxiliary output circuit respectively, and microprocessor controlling switch circuit connection master is defeated
Go out feedback circuit, low differential voltage linear voltage stabilizer circuit connects auxiliary output circuit, and microprocessor connects microprocessor control and opened respectively
Powered-down road and low differential voltage linear voltage stabilizer circuit, cross regulation rate improve circuit on one side and connect main output feedback circuit, the other end
Auxiliary output circuit and low differential voltage linear voltage stabilizer circuit are connected respectively.
2. according to claim 1 improve the low standby power circuit of cross regulation rate, it is characterised in that the switch becomes
Depressor is flyback transformer, wherein, primary side port five, secondary end port six, secondary end port one and the secondary end of transformer
Port two is Same Name of Ends.
3. according to claim 2 improve the low standby power circuit of cross regulation rate, it is characterised in that the switch becomes
Depressor is model STR-A6059H transformer.
4. according to claim 1 improve the low standby power circuit of cross regulation rate, it is characterised in that the auxiliary output
Circuit includes diode four, electric capacity eight and ground wire, and the anode connecting valve transformer secondary output end port two of the diode four is cloudy
Pole connects low differential voltage linear voltage stabilizer circuit, and the positive terminal of electric capacity eight connects the negative electrode of diode four, negative pole end connection ground wire.
5. according to claim 1 improve the low standby power circuit of cross regulation rate, it is characterised in that the microprocessor
Device controlling switch circuit includes electric capacity six, resistance 11, triode two, triode three and ground wire, the emitter stage of the triode
Main output feedback circuit is connected, base stage connects one end of resistance 11, the current collection of the other end connecting triode three of resistance 11
Pole, the emitter stage connection ground wire of triode three, base stage connection microprocessor, the current collection of the positive terminal connecting triode two of electric capacity six
Pole, negative pole end connection ground wire.
6. according to claim 1 improve the low standby power circuit of cross regulation rate, it is characterised in that the low voltage difference
Linear regulator circuit includes three terminal regulator, electric capacity ten, electric capacity 11 and ground wire, and the output pin of the three terminal regulator connects
Microprocessor, grounding pin connection ground wire are connect, the positive terminal of electric capacity ten connects the output pin of three terminal regulator, negative pole end connection
Ground wire, one end of electric capacity 11 connects the output end of three terminal regulator, other end connection ground wire.
7. according to claim 1 improve the low standby power circuit of cross regulation rate, it is characterised in that the intersection is adjusted
Whole rate, which improves circuit, includes triode one, resistance seven and voltage-stabiliser tube, the main output feedback electricity of emitter stage connection of the triode one
Road, colelctor electrode connects auxiliary output circuit, and base stage connects the positive pole of voltage-stabiliser tube, and one end of resistance seven connects the negative pole of voltage-stabiliser tube, separately
One end connects auxiliary output circuit and low-dropout regulator linear regulator circuit respectively.
8. the low standby power circuit of the improvement cross regulation rate according to claim 5 or 7, it is characterised in that described three
Pole pipe one is PNP triode, and triode two is PNP triode, and triode three is NPN triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621376584.3U CN206341148U (en) | 2016-12-15 | 2016-12-15 | Improve the low standby power circuit of cross regulation rate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621376584.3U CN206341148U (en) | 2016-12-15 | 2016-12-15 | Improve the low standby power circuit of cross regulation rate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206341148U true CN206341148U (en) | 2017-07-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621376584.3U Active CN206341148U (en) | 2016-12-15 | 2016-12-15 | Improve the low standby power circuit of cross regulation rate |
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| Country | Link |
|---|---|
| CN (1) | CN206341148U (en) |
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2016
- 2016-12-15 CN CN201621376584.3U patent/CN206341148U/en active Active
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