CN103313003A - Standby control circuit and television set - Google Patents
Standby control circuit and television set Download PDFInfo
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- CN103313003A CN103313003A CN2013101679316A CN201310167931A CN103313003A CN 103313003 A CN103313003 A CN 103313003A CN 2013101679316 A CN2013101679316 A CN 2013101679316A CN 201310167931 A CN201310167931 A CN 201310167931A CN 103313003 A CN103313003 A CN 103313003A
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Abstract
The invention relates to the field of power sources, and provides a standby control circuit and a television set. The standby control circuit comprises an EMI (electro-magnetic interference) filtration module, a rectification filtration module, a transformer module, an output rectification filtration module, a PWM (pulse-width modulation) control module, a voltage stabilization feedback module, an energy storage module, a voltage comparison module, a standby signal input module and a standby control module, wherein an input end of the EMI filtration module is connected with a power source; and an output end of the output rectification filtration module is connected with a load. With the adoption of the standby control circuit, the energy storage module can be momentarily charged automatically and intermittently at the condition that the PWM control module is in an intermittent working state when the television set is in a standby mode; after that, the energy storage module supplies power for the load for a long time; and the circuit is simple, and the cost is low. Relative to the PWM control module in a normal open state in the prior art, the power consumption of the PWM control module is lower to the power consumption which is only capable of maintaining one indicator light.
Description
Technical field
The present invention relates to the appliance circuit field, relate in particular to standby low power consumpting controling circuit and the television set of intermittent power supply.
Background technology
Along with the development of society, awareness of saving energy more and more is subjected to extensive consumer's attention.And television set, all there are higher stand-by power consumption in computer, air-conditioning, the power supply of the multiple electric equipment such as refrigerator, and according to investigations, the annual electric energy electricity charge that lose because of the stand-by power consumption of electric equipment have nearly hundred million yuan.
And the electric appliance standby circuit that has " discontinuous operation pattern " now uses relay, CPU control, the circuit modules such as super capacitor, the shortcoming such as cost is higher, and circuit is complicated, and safety is wayward, and relay switch useful life is short; In addition, adopt " Zero-power-consumption standby pattern " although appliance circuit standby power power consumption drop to and approach zero, mix complete machine, can not make standby indicating lamp, the normal operation of the devices such as infrared remote receiver.
In sum, there is the circuit complexity in the stand-by circuit of prior art, safety is wayward, cost is high, or the shortcomings such as standby indicating lamp, infrared remote receiver even load cisco unity malfunction.
Summary of the invention
The object of the present invention is to provide a kind of readiness control circuit, the stand-by circuit that is intended to solve prior art exists that circuit is complicated, safety is wayward, cost is high, or the shortcomings such as standby indicating lamp, infrared remote receiver even load cisco unity malfunction.
For this reason, the present invention is by the following technical solutions:
A kind of readiness control circuit comprises the EMI filtration module, rectification filtering module, transformer module, the output rectification filter module that connect successively, the input termination power of described EMI filtration module, the output termination load of described output rectification filter module; The PWM control module that also comprises the operating state of controlling described transformer module, the output of the described EMI filtration module of starting up's termination of described PWM control module, the controlled end of the described transformer module of switching signal output termination, the second source output that power input connects described transformer module;
Described readiness control circuit also comprises:
The galvanic Voltage Feedback that described output rectification filter module is exported is to the voltage stabilizing feedback module of described PWM control module and output voltage regulation signal, and output, the feedback output end of the described output rectification filter module of input termination of described voltage stabilizing feedback module connect the feedback input end of described PWM control module;
Be the energy-storage module of described load supplying, the output of the described output rectification filter module of input termination of described energy-storage module, the load of output termination;
Supply power voltage and described voltage regulation signal that described energy-storage module is powered to described load compare, and according to the voltage comparison module of comparative result output control signal, the first input end of described voltage comparison module connects the voltage regulation signal output of described voltage stabilizing feedback module, the output of the described energy-storage module of the second input termination;
The standby signal input module of output standby signal;
Control the Opportunity awaiting control for linear module of the operating state of described PWM control module according to the described control signal of described voltage comparison module output, the input of described Opportunity awaiting control for linear module all with described voltage comparison module be connected the output of standby signal input module and be connected, export the standby signal control end of the described PWM control module of termination.
The present invention also provides a kind of television set that comprises above-described readiness control circuit.
Readiness control circuit provided by the invention when entering holding state, is load supplying by energy-storage module.At this moment, when the supply power voltage that detects energy-storage module when voltage comparison module was lower than the lower limit of setting, output signal control PWM control module was carried out work, thereby charged for energy-storage module; When the supply power voltage that detects energy-storage module when voltage comparison module was higher than the higher limit of setting, output signal control PWM control module quit work, and be load supplying by energy-storage module this moment.Therefore, readiness control circuit provided by the present invention, the PWM control module is in the discontinuous operation state when standby, but automatic batch-type is the energy-storage module momentary charge, is load supplying for a long time by energy-storage module afterwards, its circuit is simple, cost is low; With respect to the normally open of the PWM control module of prior art, its power consumption is lower, can be low to moderate the power consumption of only keeping an indicator light.
Description of drawings
The schematic block circuit diagram of the readiness control circuit that Fig. 1 provides for the embodiment of the invention;
The circuit theory schematic diagram of the readiness control circuit that Fig. 2 provides for the embodiment of the invention.
Embodiment
Below in conjunction with drawings and the specific embodiments the present invention is described in further detail.
With reference to Fig. 1, the schematic block circuit diagram of the readiness control circuit that the embodiment of the invention provides.
A kind of readiness control circuit comprises the EMI filtration module 2, rectification filtering module 3, transformer module 4, the output rectification filter module 5 that connect successively, the input termination power 1 of EMI filtration module 2, the output termination load 6 of output rectification filter module 5; The PWM control module 7 that also comprises the operating state of control transformer module 4, controlled end, the power input of the output of starting up's termination EMI filtration module 2 of PWM control module 7, switching signal output termination transformer module 4 connect the second source output of transformer module 4;
Readiness control circuit also comprises: the galvanic Voltage Feedback that output rectification filter module 5 is exported is to the voltage stabilizing feedback module 8 of PWM control module 7 and output voltage regulation signal, and output, the feedback output end of the input termination output rectification filter module 5 of voltage stabilizing feedback module 8 connect the feedback input end of PWM control module 7; Be the energy-storage module 9 of load 6 power supplies, the output of the input termination output rectification filter module 5 of energy-storage module 9, output termination load 6; Supply power voltage and voltage regulation signal that 9 pairs of loads 6 of energy-storage module are powered compare, and according to the voltage comparison module 10 of comparative result output control signal, the first input end of voltage comparison module 10 connects the voltage regulation signal output of voltage stabilizing feedback module 8, the output of the second input termination energy-storage module 9; The standby signal input module 11 of output standby signal; Control the Opportunity awaiting control for linear module 12 of the operating state of PWM control module 7 according to the control signal of voltage comparison module 10 outputs, the input of Opportunity awaiting control for linear module 12 all is connected, exports the standby signal control end of termination PWM control module 7 with the output that voltage comparison module 10 is connected with the standby signal input module.With reference to Fig. 2, the circuit theory schematic diagram of the readiness control circuit that the embodiment of the invention provides.
Voltage stabilizing feedback module 8 comprises optocoupler IC7, amplifier U1A, voltage-stabiliser tube ZD1, resistance R 74, resistance R 75, resistance R 77, resistance R 87, resistance R 88, resistance R 90 and resistance R 91;
The output of output rectification filter module 5 is successively by resistance R 74, resistance R 75, resistance R 77 ground connection, and the output of output rectification filter module 5 is also successively by resistance R 91, resistance R 88 ground connection; The output of amplifier U1A connects the output of output rectification filter module 5 successively by resistance R 87 and resistance R 90, the anti-phase input terminating resistor R91 of amplifier U1A and the public connecting end of resistance R 88, the in-phase input end connecting resistance R74 of amplifier U1A and the public connecting end of resistance R 75; The negative electrode connecting resistance R74 of voltage-stabiliser tube ZD1 and public connecting end, the plus earth of resistance R 75; The output that the 1 pin connecting resistance R87 of optocoupler IC7 and the public connecting end of resistance R 90,2 pin meet amplifier U1A, 3 pin ground connection, 4 pin are as the feedback output end of voltage stabilizing feedback module 8; The public connecting end of resistance R 91 and resistance R 74 is as the input of voltage stabilizing feedback module 8; The public connecting end of resistance R 75 and resistance R 77 is as the output end of pressure-stabilizing of voltage stabilizing feedback module 8.
Energy-storage module 9 comprises the storage capacitor C63 that is connected between output rectification filter module 5 and the ground, the minus earth of storage capacitor C63, anodal simultaneously as input and the output of energy-storage module 9.
The first end of resistance R 89 passes through resistance R 84 ground connection as the second input, second end of voltage comparison module 1; The second end of the anti-phase input terminating resistor R89 of amplifier U2B, in-phase input end are as the first input end of voltage comparison module 1; The negative electrode of diode D16 is as the output of voltage comparison module 1, anode meets amplifier U2B by resistance R 78 output; Resistance R 73 is connected between the output and in-phase input end of amplifier U2B.
The anode of the output terminating diode D17 of standby signal input module 11, the input of the negative electrode reception machine control module 12 of diode D17.
Readiness control circuit also comprises the power failure detection circuit 13 whether detection power supply 1 cuts off the power supply, the outage detection end of the output of the input termination EMI filtration module 2 of power failure detection circuit 13, output termination PWM control module 7.
Power failure detection circuit 13 comprises resistance R 23 and resistance R 31;
By resistance 23, resistance R 31 ground connection, the public connecting end of resistance 23 and resistance R 31 is as the output of power failure detection circuit 13 successively for the output of EMI filtration module 2.
The LS pin of PWM controller IC 8 is received the output, FB pin of machine control module 12 as the feedback input end of PWM control module 7 as the standby signal control end of PWM control module 7, OFF pin by described optocoupler IC5 as starting up's end of PWM control module 7, OFF pin as the power input of PWM control module 7, VIN pin as the switching signal output of PWM control module 7, VCC pin as the outage detection end of PWM control module 7, OUT pin.
In the embodiment of the invention, amplifier U1A, amplifier U2B, voltage-stabiliser tube ZD1 are that model is integrated amplifier and the voltage-stabiliser tube of accurate voltage stabilizing adjustment chip internal of AP4310.
The operation principle of the readiness control circuit that the embodiment of the invention is provided below in conjunction with Fig. 2 is described further.
The pressure sampling circuit that the anti-phase input terminating resistor R91 of amplifier U1A and R88 consist of, in-phase input end connects and draws resistance R 74 to provide reference voltage for its input; Voltage stabilizing feedback module 8 is taken a sample the voltage of output rectification filter module 5 by resistance R 91 and R88 dividing potential drop after, input to after the amplifier U1A judged result again that output feeds back to PWM control module 7, the duty ratio of adjusting the pwm signal of PWM control module 7 outputs makes the voltage stabilization of transformer module 4 outputs.
The voltage of the negative electrode of voltage-stabiliser tube ZD1 inputs to the in-phase input end of amplifier U2B after by resistance R 75 and resistance R 77 dividing potential drop samples, as the reference voltage of 5 pin of U1B.After the cathode voltage of storage capacitor C63 consisted of pressure sampling circuit by resistance R 89 and resistance R 84, the sampling voltage of this pressure sampling circuit inputed to the inverting input of amplifier U2B.Resistance R 73 is as the feedback resistance of amplifier U2B.The control signal of the output output of amplifier U2B is received the input of machine control module 12 successively by resistance R 78, diode D16.The signal co-controlling Opportunity awaiting control for linear module 12 of the control signal of amplifier U2B output and 11 outputs of standby signal input module.The effect of diode D16 and diode D17 is that the signal of guaranteeing the control signal of amplifier U2B output and 11 outputs of standby signal input module is independent of each other.Opportunity awaiting control for linear module 12 connects the standby signal control end of PWM control module 7 by optocoupler IC5, the work of control PWM control module 7 with stop.
When standby signal input module 11 output low level, this moment, readiness control circuit entered holding state by open state, this moment, storage capacitor C63 supply power voltage was sufficient, amplifier U2B output also is low level, and act on Opportunity awaiting control for linear module 12 and then PWM control module 7 quit work for low level this moment.Be standby indicating lamp by storage capacitor C63 this moment, 6 power supplies of infrared remote receiver even load.
After storage capacitor C63 power consumption makes supply power voltage be lower than the lower limit of setting, the supply power voltage that amplifier U2B will detect storage capacitor C63 is exported high level after being lower than the lower limit of setting, act on Opportunity awaiting control for linear module 12 and then make PWM control module 7 carry out work for high level this moment, is storage capacitor C63 charging.When storage capacitor C63 supply power voltage is higher than the higher limit of setting, the supply power voltage that amplifier U2B will detect storage capacitor C63 is higher than the higher limit of setting, amplifier U2B is output as low level, and act on Opportunity awaiting control for linear module 12 and then PWM control module 7 quit work for low level this moment.Be standby indicating lamp by storage capacitor C63 this moment, 6 power supplies of infrared remote receiver even load.So, this readiness control circuit is worked repeatedly.
Therefore, the readiness control circuit that the embodiment of the invention provides, PWM control module 7 is in the discontinuous operation state when standby, but automatic batch-type is energy-storage module 9 momentary charges, be for a long time load 6 power supplies by energy-storage module 9 afterwards, its circuit is simple, cost is low; With respect to the normally open of the PWM control module of prior art, its power consumption is lower, can be low to moderate the power consumption of only keeping an indicator light.(power consumption of PWM control module normally open is about 200mW, and the PWM control module of the service intermittent of the readiness control circuit that the embodiment of the invention provides, its power consumption is about 20mW.）
In addition, in the embodiment of the invention, power supply 1 by capacitor C X2 and common mode inductance LF3 after its live wire connect together after by diode D18 by diode D19, zero line, be connected to starting up's end of PWM control module 7 by resistance R 38, power firestreak or zero line transfer to PWM control module 7 outage detection ends with the dividing potential drop sampled signal after taking a sample by divider resistance R23 and resistance R 31 dividing potential drops again.After pulling out attaching plug---be after power supply 1 cuts off the power supply, the outage detection end of PWM control module 7 is low level, then the capacitor C X2 of EMI filtration module 2 is by diode D19, diode D18, transfer to the starting up end of PWM control module 7 by resistance R 38 again, this moment, capacitor C X2 discharged by PWM control module 7.So both can save prior art is the idling consumption of the resistance of capacitor C X2 discharge, has simplified again circuit, provides cost savings.
The embodiment of the invention also provides a kind of television set that comprises above-described readiness control circuit.
Be the preferred embodiment of the present invention only below, be not limited to the present invention, all any modifications of within principle of the present invention, doing, be equal to and replace and improvement etc., all should be included within the scope of protection of the invention.
Claims (9)
1. readiness control circuit, comprise the EMI filtration module (2), rectification filtering module (3), transformer module (4), the output rectification filter module (5) that connect successively, the input termination power (1) of described EMI filtration module (2), the output termination load (6) of described output rectification filter module (5); The PWM control module (7) that also comprises the operating state of the described transformer module of control (4), controlled end, the power input of the output of the described EMI filtration module of starting up's termination of described PWM control module (7) (2), the switching signal output described transformer module of termination (4) connect the second source output of described transformer module (4); It is characterized in that,
Described readiness control circuit also comprises:
The galvanic Voltage Feedback that described output rectification filter module (5) is exported is to the voltage stabilizing feedback module (8) of described PWM control module (7) and output voltage regulation signal, and output, the feedback output end of the described output rectification filter module of the input termination of described voltage stabilizing feedback module (8) (5) connects the feedback input end of described PWM control module (7);
Be the energy-storage module (9) of described load (6) power supply, the output of the described output rectification filter module of the input termination of described energy-storage module (9) (5), output termination load (6);
Supply power voltage and described voltage regulation signal that described energy-storage module (9) is powered to described load (6) compare, and according to the voltage comparison module (10) of comparative result output control signal, the first input end of described voltage comparison module (10) connects the voltage regulation signal output of described voltage stabilizing feedback module (8), the output of the second input described energy-storage module of termination (9);
The standby signal input module (11) of output standby signal;
The standby signal input module is controlled the Opportunity awaiting control for linear module (12) of the operating state of described PWM control module (7) according to the described control signal of described voltage comparison module (10) output, the input of described Opportunity awaiting control for linear module (12) all with described voltage comparison module (10) be connected the output of standby signal input module (12) and be connected, export the standby signal control end of the described PWM control module of termination (7).
2. readiness control circuit as claimed in claim 1, it is characterized in that, described voltage stabilizing feedback module (8) comprises optocoupler IC7, amplifier U1A, voltage-stabiliser tube ZD1, resistance R 74, resistance R 75, resistance R 77, resistance R 87, resistance R 88, resistance R 90 and resistance R 91;
The output of described output rectification filter module (5) is successively by described resistance R 74, described resistance R 75, described resistance R 77 ground connection, and the output of described output rectification filter module (5) is also successively by described resistance R 91, described resistance R 88 ground connection;
The output of described amplifier U1A connects the output of described output rectification filter module (5) successively by described resistance R 87 and described resistance R 90, the public connecting end of the described resistance R 91 of the anti-phase input termination of described amplifier U1A and described resistance R 88, the in-phase input end of described amplifier U1A connects the public connecting end of described resistance R 74 and described resistance R 75;
The negative electrode of described voltage-stabiliser tube ZD1 connects public connecting end, the plus earth of described resistance R 74 and described resistance R 75;
1 pin of described optocoupler IC7 connects the public connecting end of described resistance R 87 and described resistance R 90, output that 2 pin meet described amplifier U1A, 3 pin ground connection, 4 pin as the feedback output end of described voltage stabilizing feedback module (8);
The public connecting end of described resistance R 91 and described resistance R 74 is as the input of described voltage stabilizing feedback module (8);
The public connecting end of described resistance R 75 and described resistance R 77 is as the output end of pressure-stabilizing of described voltage stabilizing feedback module (8).
3. readiness control circuit as claimed in claim 1, it is characterized in that, described energy-storage module (9) comprises the storage capacitor C63 that is connected between described output rectification filter module (5) and the ground, described minus earth, anodal simultaneously as input and the output of described energy-storage module (9) that can capacitor C 63.
4. readiness control circuit as claimed in claim 1 is characterized in that, described voltage comparison module (10) comprises resistance R 73, resistance R 78, resistance R 84, resistance R 89, amplifier U2B and diode D16;
The first end of described resistance R 89 as the second input of described voltage comparison module (1), the second end by described resistance R 84 ground connection;
The second end of the described resistance R 89 of anti-phase input termination of described amplifier U2B, in-phase input end are as the first input end of described voltage comparison module (1);
The negative electrode of described diode D16 is as the output of described voltage comparison module (1), anode meets described amplifier U2B by described resistance R 78 output;
Described resistance R 73 is connected between the output and in-phase input end of described amplifier U2B.
5. readiness control circuit as claimed in claim 1 is characterized in that, the anode of the output terminating diode D17 of described standby signal input module (11), and the negative electrode of diode D17 connects the input of described Opportunity awaiting control for linear module (12).
6. readiness control circuit as claimed in claim 1, it is characterized in that, described readiness control circuit also comprises the power failure detection circuit (13) whether the described power supply of detection (1) cuts off the power supply, the outage detection end of the output of the described EMI filtration module of the input termination of described power failure detection circuit (13) (2), the output described PWM control module of termination (7).
7. readiness control circuit as claimed in claim 6 is characterized in that, described power failure detection circuit (13) comprises resistance R 23 and resistance R 31;
By described resistance 23, described resistance R 31 ground connection, the public connecting end of described resistance 23 and described resistance R 31 is as the output of described power failure detection circuit (13) successively for the output of described EMI filtration module (2).
8. such as claim 1 or 6 described readiness control circuits, it is characterized in that, described PWM control module (7) comprises PWM controller IC 8 and optocoupler IC5, and the model of described PWM controller IC 8 is MIP006;
The LS pin of described PWM controller IC 8 is as the outage detection end of described PWM control module (7), the OUT pin is as the switching signal output of described PWM control module (7), the VCC pin is as the power input of described PWM control module (7), the VIN pin is as starting up's end of described PWM control module (7), the OFF pin is as the standby signal control end of described PWM control module (7), the OFF pin connects the output of described Opportunity awaiting control for linear module (12) by described optocoupler IC5, the FB pin is as the feedback input end of described PWM control module (7).
9. a television set is characterized in that, comprises each described readiness control circuit of claim 1-8.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310167931.6A CN103313003B (en) | 2013-05-09 | 2013-05-09 | Readiness control circuit and television set |
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| CN201310167931.6A CN103313003B (en) | 2013-05-09 | 2013-05-09 | Readiness control circuit and television set |
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| CN104811026A (en) * | 2015-05-27 | 2015-07-29 | 成都德麦科技有限公司 | Switch power supply |
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| WO2017181568A1 (en) * | 2016-04-22 | 2017-10-26 | 深圳创维－Rgb电子有限公司 | Switching power supply and television |
| CN107515658A (en) * | 2016-06-17 | 2017-12-26 | 南宁富桂精密工业有限公司 | Electric power system and method for supplying power to |
| US10015434B2 (en) | 2016-04-22 | 2018-07-03 | Shenzhen Skyworth-Rgb Electronic Co., Ltd | Switched-mode power supply for outputting a steady voltage and current and television including the same |
| US10355506B2 (en) | 2016-06-17 | 2019-07-16 | Nanning Fugui Precision Industrial Co., Ltd. | Power supplying system and method |
| CN112938904A (en) * | 2021-03-25 | 2021-06-11 | 东风汽车集团股份有限公司 | Low-power-consumption standby control system and method for vehicle-mounted oxygen generator and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112938904A (en) * | 2021-03-25 | 2021-06-11 | 东风汽车集团股份有限公司 | Low-power-consumption standby control system and method for vehicle-mounted oxygen generator and storage medium |
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| CN103313003B (en) | 2016-10-12 |
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