CN1877673A - Method for reducing standby power consumption of resonant plasma display power supply - Google Patents
Method for reducing standby power consumption of resonant plasma display power supply Download PDFInfo
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- CN1877673A CN1877673A CN 200610043051 CN200610043051A CN1877673A CN 1877673 A CN1877673 A CN 1877673A CN 200610043051 CN200610043051 CN 200610043051 CN 200610043051 A CN200610043051 A CN 200610043051A CN 1877673 A CN1877673 A CN 1877673A
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Abstract
The disclosed method to reduce resonance-type plasma display power standby consumption comprises: adding an auxiliary output coiling to original output loop to lead input voltage after adjusted by PFC power factor and generate working power for a PWM controller through a T-shape stabilizer; thereby, on standby state, reducing power to zero; when need to provide power, attracting the relay, conducting circuit, using the SCR to provide soft-startup voltage for PWM control chip, and providing the voltage VCC from an auxiliary coiling to the control chip, and turning off the SCR. This invention has better energy-saving effect.
Description
Technical field
This method belongs to the gas discharge technical field, relates to plasma display power supply, particularly a kind of method that reduces standby power consumption of resonant plasma display power supply, and this method can reduce the stand-by power consumption of plasma display.
Background technology
Plasma display is that a kind of ultraviolet ray excited light-emitting phosphor that is coated in the display unit that utilizes gas discharge in the display unit to produce comes a kind of display device of display message.
Present most plasma display power supply at display screen hour, generally adopts positive and negative sharp output scheme, and is simple in structure, dependable performance, but output power is limited, can not satisfy the plasma display power demands than giant-screen.The resonant mode topological structure that adopts for the power demands that satisfies large screen plasma display for minority, all adopted the scheme of stand-by circuit to main output loop control chip power supply, these schemes make that the stand-by power consumption of plasma display is bigger, and its schematic block diagram as shown in Figure 1.
The block diagram of common plasma display power supply as shown in Figure 3, among Fig. 3, civil power 220 exchanges input, by being transformed into 380 volts DC voltage after filtering, the PFC power factor correction.The effect of power factor correction is to make the waveform of input voltage and input current near sinusoidal wave, to reduce the interference of clutter to electrical network.All outputs of the high-low pressure of power supply all are 380 volts of DC voltage after the PFC Active PFC to be carried out DC-AC-DC convert.The standby part of power supply then is directly to produce after filtering.
Plasma display will consume great power in the course of the work, adopt the power supply of resonant mode structure to have the advantages that output power is big, conversion efficiency is high, will be the preferred plan of plasma display power supply master output.Because the display quality of plasma display and the output effect of power supply have direct relation.In order to show the image effect of high-resolution, need the powersupply system of plasma display to carry out constantly deeply improving and the performance raising.To consider from aspects such as output voltage, output power, conversion efficiency, reliabilities on the one hand to adapt to the different plasma displays that require; Reduce the stand-by power consumption of power supply itself on the other hand again when satisfying people's demand, realize the purpose of maximum energy-conservationization, this is the focus that the insider pays close attention to.
Summary of the invention
The objective of the invention is to, a kind of method that reduces standby power consumption of resonant plasma display power supply is provided, this method adopts the self-powered mode of feedback to the control chip of output major loop, the main output and the standby part of plasma display power supply are separated fully, reduce the plasma display power supply stand-by power consumption thereby reach.
To achieve these goals, the present invention takes following technical solution:
A kind of method that reduces standby power consumption of resonant plasma display power supply, it is characterized in that, this method increases an auxiliary output winding at original power supply output loop, the output winding is proofreaied and correct the back from PFC power factor module and is introduced input voltage, produce the working power of PWM controller by three terminal regulator, the main output and the standby of plasma display power supply are partly separated, the PWM controller is in power-down state under ideal case, power consumption reduces to zero, when control system requires main output that voltage is provided, attracting electric relay, DC voltage after the PFC power factor correction is passed through resistance, controllable silicon SCR provides soft start voltage for pwm chip, then the resonant mode main circuit is started working, and the voltage VCC that is produced by auxiliary winding offers pwm chip, turn-offs controllable silicon SCR simultaneously.
Method of the present invention can the plasma display power supply work output power, output characteristics and holding circuit produce adverse influence, implementation procedure is the PWM controller chip is powered to realize by increase an auxiliary output winding in the inversion process of power supply output loop.The electric power system of PWM controller chip is that soft start and feedback winding power supply combine and finish.
Description of drawings
Fig. 1 is the stand-by circuit and the main output circuit synoptic diagram of present plasma display resonant mode power supply.
Fig. 2 is the stand-by circuit and the main output circuit synoptic diagram of the low standby power loss resonant mode power supply that proposes among the present invention.
Fig. 3 is the plasma display power supply structured flowchart.
Fig. 4 is the electric power system synoptic diagram that adopts self-powered PWM controller.
The present invention is described in further detail below in conjunction with accompanying drawing.
Embodiment
As shown in Figure 2, power unit comprises that the power supply master of common employing exports control chip, and it and power supply master output loop interconnect, and also comprise the power supply stand-by circuit, the power supply stand-by circuit is not exported control chip with the power supply master and is connected, and it only is connected with power management chip and interface stand-by circuit.When standby, pilot relay K disconnects, the main output control part of power supply comprises that PWM Controller is in not power supply state, do not carry out work, main output comprises that transformer T1 and three terminal regulator 7815 do not work, standby with power supply does not partly have basic being electrically connected like this, will can not consume the power consumption of any stand-by circuit when the major loop of power supply is not worked.When requiring main output services, pilot relay K adhesive, the output voltage of PFC power factor correction module changes PWM controller over to soft state by controllable silicon SCR, PWM is with maximum duty cycle work, at this moment the transformer T1 of major loop and three terminal regulator 7815 will be worked, three terminal regulator 7815 is given PWM controller in feedback power supply, also any power consumption of electric consumption standby part not.Can adapt under the prerequisite that different plasma displays requires having satisfied output power, greatly reduce the stand-by power consumption of power supply itself.
The block diagram of plasma display power supply as shown in Figure 3, civil power 220V exchanges input, wave network is connected with PFC power factor correction module and stand-by circuit respectively after filtration, the PFC power factor correction module is connected with the DC-DC conversion module; Stand-by circuit is divided into three the tunnel, one the tunnel produces stand-by power consumption with outputing to interface, and another road links to each other with original power management chip, and one the tunnel is connected with the PWM controller in addition, power management chip is connected in the DC-DC conversion module by the PWM controller, and power supply master output also is connected with the PWM controller.
By being transformed into 380 volts DC voltage after filter network, the PFC power factor correction module.The effect of PFC power factor correction module is to make the waveform of input voltage and input current near sinusoidal wave, to reduce the interference of clutter to electrical network.All outputs of the high-low pressure of power supply all are 380 volts of DC voltage after the PFC Active PFC to be carried out DC-AC-DC convert.The standby part of power supply then is directly to produce after filtering.
The present invention is satisfying under the prerequisite of plasma display, is reducing stand-by power consumption as much as possible.From the stand-by circuit of Fig. 3 part as can be seen, stand-by power consumption mainly is made up of three parts: the stand-by power consumption that 1, offers the interface section; 2, the minimum system of power management chip; 3, offer the stand-by power consumption of the control chip of each road DC-DC conversion.
For this three parts stand-by power consumption, offer of the stand-by circuit decision of the stand-by power consumption of interface section by interface, the minimum system of power management chip then is the requisite power consumption of power supply itself, and each road DC-DC conversion is that output is not provided fully when standby, and just the stand-by power consumption of the control chip of these PWM can save.The stand-by power consumption of ionic medium display power supply of the present invention just only comprises the two kinds of stand-by power consumptions in front, and in its output loop, increase the auxiliary power supply winding for the electric power system of PWM controller, allow power supply PWM controller under ideal case be in power-down state, power consumption reduces to zero, has so just reduced the stand-by power consumption of plasma display power supply to greatest extent.
Circuit shown in Figure 4 is the electric power system synoptic diagram of a kind of self-powered PWM controller that adopts among the present invention.Among the figure resonant mode main-transformer is increased an auxiliary winding 3, be connected with diode D1 on the auxiliary winding 3, diode D1 is connected with the port one of three terminal regulator 7815, port 2 ground connection of three terminal regulator 7815 are parallel with diode D2, electrochemical capacitor C1, capacitor C 2 between the port one of three terminal regulator 7815 and the port 2; The port 3 (output terminal) of three terminal regulator 7815 produces voltage vcc by diode D3 and supplies with PWM controller controller, is parallel with electrochemical capacitor C3, capacitor C 4 between the port 2 of three terminal regulator 7815 and the port 3.
The output of pwm chip controller also is connected with pilot relay K and resistance R 1, R3, be connected in parallel on the resistance R 3 behind resistance R 2 and the LED polyphone, link to each other with controllable silicon SCR by resistance R 4, the trigger electrode of controllable silicon SCR connects stabilivolt D4, controllable silicon SCR output links to each other with the GND end (ground connection) of Vcc and pwm chip controller respectively by the two ends of capacitor C 7, and the input end of controllable silicon SCR also is connected with electrochemical capacitor C5 and capacitor C 6.
Auxiliary winding 3 is in order to produce the working power of PWM controller.Adopt the circuit of this main export structure, just proofread and correct the back and introduce input voltage from PFC, when control system requires main output that voltage is provided, attracting electric relay, DC voltage after the PFC power factor correction module provides soft start voltage by R, controllable silicon SCR for pwm chip, then the resonant mode main circuit is started working, and the voltage VCC that is produced by auxiliary winding offers pwm chip, turn-offs SCR simultaneously.
Main output loop for the plasma display power supply of resonant mode, adopt the self-powered scheme of reaction type, save the circuit that offers the work of major loop control chip in the stand-by circuit, master's output circuit is in non-power supply state fully when making standby, reaches the purpose that reduces stand-by power consumption.
Power supply master output loop among the present invention has self-powered work, the circuit structure of controlled output; The transplantability of circuit is very strong, can work alone, and is no longer dependent on stand-by circuit, has simplified stand-by circuit; Adopt the stand-by power consumption of the plasma display power supply of this structural design not comprising the stand-by power consumption of main output circuit, have only the stand-by power consumption of power management chip and the stand-by power consumption of the interface that matches with it, have obviously low stand-by power consumption function; Adopt the plasma display of the low standby power loss power supply that this structural design goes out to have remarkable energy saving effect, compare with plasma display in the market and have higher technology content and minimum stand-by power consumption.
Claims (2)
1. method that reduces standby power consumption of resonant plasma display power supply, it is characterized in that, this method increases an auxiliary output winding at original power supply output loop, the output winding is proofreaied and correct the back from PFC power factor module and is introduced input voltage, produce the working power of PWM controller by three terminal regulator, the main output and the standby of plasma display power supply are partly separated, the PWM controller is in power-down state under ideal case, power consumption reduces to zero, when control system requires main output that voltage is provided, attracting electric relay, DC voltage after the PFC power factor correction is passed through resistance, controllable silicon SCR provides soft start voltage for pwm chip, then the resonant mode main circuit is started working, and the voltage VCC that is produced by auxiliary winding offers pwm chip, turn-offs controllable silicon SCR simultaneously.
2. the method for claim 1 is characterized in that, the model of described three terminal regulator is 7815.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNB2006100430518A CN100370498C (en) | 2006-06-29 | 2006-06-29 | Method for reducing standby power consumption of resonant plasma display power supply |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2006100430518A CN100370498C (en) | 2006-06-29 | 2006-06-29 | Method for reducing standby power consumption of resonant plasma display power supply |
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| CN1877673A true CN1877673A (en) | 2006-12-13 |
| CN100370498C CN100370498C (en) | 2008-02-20 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101625588B (en) * | 2008-07-08 | 2011-03-23 | 鸿富锦精密工业（深圳）有限公司 | Supply circuit of PWM controller |
| CN101242191B (en) * | 2007-02-06 | 2011-12-14 | 三星电子株式会社 | Communication device for reducing standby power and its method |
| CN101763810B (en) * | 2009-11-05 | 2012-03-14 | 四川虹欧显示器件有限公司 | Control method of timing sequence of switching power supply of plasma display |
| CN101742186B (en) * | 2009-11-27 | 2012-09-26 | 深圳创维－Rgb电子有限公司 | Liquid crystal display television (LCD TV) power system |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1630893A (en) * | 2001-11-06 | 2005-06-22 | 先锋株式会社 | Display panel driving apparatus with reduced power loss |
| JP4268390B2 (en) * | 2002-02-28 | 2009-05-27 | パイオニア株式会社 | Display panel drive device |
| US20050088376A1 (en) * | 2003-10-28 | 2005-04-28 | Matsushita Electric Industrial Co., Ltd. | Capacitive load driver and plasma display |
| JP2005196131A (en) * | 2003-10-28 | 2005-07-21 | Matsushita Electric Ind Co Ltd | Capacitive load driver and plasma display carrying same |
-
2006
- 2006-06-29 CN CNB2006100430518A patent/CN100370498C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101242191B (en) * | 2007-02-06 | 2011-12-14 | 三星电子株式会社 | Communication device for reducing standby power and its method |
| CN101625588B (en) * | 2008-07-08 | 2011-03-23 | 鸿富锦精密工业（深圳）有限公司 | Supply circuit of PWM controller |
| CN101763810B (en) * | 2009-11-05 | 2012-03-14 | 四川虹欧显示器件有限公司 | Control method of timing sequence of switching power supply of plasma display |
| CN101742186B (en) * | 2009-11-27 | 2012-09-26 | 深圳创维－Rgb电子有限公司 | Liquid crystal display television (LCD TV) power system |
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| Publication number | Publication date |
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| CN100370498C (en) | 2008-02-20 |
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Owner name: SICHUAN SHIJI SHUANGHONG DISPLAY DEVICES CO., LTD Free format text: FORMER OWNER: IRICO GROUP ELECTRONICS CO., LTD. Effective date: 20070622 |
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Effective date of registration: 20070622 Address after: 621000, Zhou Yonghong, No. 35 Tung Hing East Road, hi tech Zone, Sichuan, Mianyang Applicant after: Sichuan Sterope Orion Display Co., Ltd. Address before: 712021 No. 1 Rainbow Road, Shaanxi, Xianyang Applicant before: IRICO Group Electronics Co., Ltd. |
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