CN202940895U

CN202940895U - Standby micro-power consumption LCD/LED TV power supply

Info

Publication number: CN202940895U
Application number: CN 201220687819
Authority: CN
Inventors: 朱鹏
Original assignee: XI'AN SEMIPOWER ELECTRONIC TECHNOLOGY Co Ltd
Current assignee: XI'AN SEMIPOWER ELECTRONIC TECHNOLOGY Co Ltd
Priority date: 2012-12-13
Filing date: 2012-12-13
Publication date: 2013-05-15
Anticipated expiration: 2022-12-13

Abstract

A standby micro-power consumption LCD/LED TV power supply provided by the utility model relates to a power supply apparatus and especially relates to the standby micro-power consumption LCD/LED TV power supply, comprising a PFC circuit, an LLC half-bridge resonance circuit, a power-supply output interface and a low-energy-consumption control circuit, wherein the PFC circuit, the LLC half-bridge resonance circuit and the power-supply output interface are successively connected with each other. The low-energy-consumption control circuit consists of a power supply circuit, a control circuit and a relay successively connected with each other, wherein the relay is connected with the PFC circuit and the control circuit is connected with the power-supply output interface. The standby micro-power consumption LCD/LED TV power supply provided by the utility model uses the low-energy-consumption control circuit to control the relay to cut off connection between the PFC circuit, the LLC half-bridge resonance circuit and an electrical network under a standby state, so that power consumption of the whole power supply system is reduced.

Description

The little power consumption LCD/LED TV power supply of a kind of standby

Technical field

The utility model relates to a kind of electric supply installation, particularly the little power consumption LCD/LED TV power supply of a kind of standby.

Background technology

Along with expanding economy and progress, energy-saving and emission-reduction, harmonious development have become the theme of current social development, along with the continuous enhancing of people's environmental consciousness, national governments also have higher requirement to standby and the efficiency of electronic product---and oligosaprobic discharge capacity is fallen.To this, European Union takes the lead in having carried out the EUP instruction, and the Energy Star planning item is also carried out by the U.S., is accompanied by improving constantly of EUP instruction threshold, and large quantities of efficiencies enterprises not up to standard will be eliminated.At present, TV industry has very wide user group, and annual television standby has consumed a large amount of electric energy, so the low power consumption standby power supply has just had very high promotional value.

There is no in the market perfect scheme can allow power supply thoroughly realize little power consumption, some producers have released scheme, but because the ECO TV control chip of needs specialty is supported, become the bottleneck of popularization and the manufacturing in batches of industry, and other manufacturers, its product design is perfect not, has more defective: some TV power supply is without pfc circuit, and the harmonic wave interference ratio is larger.And some producer has adopted pfc circuit, but single-stage pfc circuit volume is large, is unfavorable for the raising of power density, the realization of the whole ultrathin of TV.

Summary of the invention

The utility model is intended to propose the low TV power supply of a kind of standby power consumption.

The little power consumption LCD/LED TV power supply of a kind of standby described in the utility model, comprise the pfc circuit, LLC half-bridge resonance circuit and the power output interface that connect successively, described low power consumption standby power supply also comprises a low-power control circuit, described low power consumption standby power supply also comprises a low-power control circuit, this low-power control circuit is comprised of power supply circuits, control circuit and the relay of successively connection, described relay is connected with pfc circuit, and control circuit is connected with power output interface.Preferably, described control circuit comprises one-chip computer module, signal receiving unit and output unit, and described signal receiving unit and output unit are connected on one-chip computer module respectively, and described output unit is connected with relay.

Further preferably, described signal receiving unit is the infrared signal receiving element.

Further preferably, described one-chip computer module is the park mode one-chip computer module.

Preferably, described pfc circuit is the interleaving PFC circuit.

Further preferably, also be provided with the Opportunity awaiting control for linear unit on described one-chip computer module, the Opportunity awaiting control for linear unit is connected with power output interface by output unit.

The little power consumption LCD/LED TV power supply of a kind of standby described in the utility model, under LCD/LED television standby state, use the low-power control circuit control relay to cut off being connected between pfc circuit, LLC half-bridge resonance circuit and electrical network, having reduced electrical network is connected with LLC half-bridge resonance circuit with pfc circuit and is connected, be only whole standby system power supply with power supply circuits, reduced the power consumption of whole power-supply system, the power consumption of whole system is in 4 milliwatts, the utility model is simple in structure, but suitability for industrialized production, practicality is stronger.

Description of drawings

Fig. 1 is the structure connection diagram of embodiment 2;

Fig. 2 is the circuit diagram of control circuit;

1-control circuit in figure; The 2-relay; The 3-pfc circuit; 4-LLC half-bridge resonance circuit; The 5-power output interface; The 6-power supply circuits.

Embodiment

Embodiment 1.

the little power consumption LCD/LED TV power supply of a kind of standby described in the utility model, comprise the power supply circuits 6 that are connected in turn on electrical network, control circuit 1, relay 2, pfc circuit 3, LLC half-bridge resonance circuit 4 and power output interface 5, and control circuit 1 is connected with power output interface 5, control circuit 1 is provided with for the infrared signal receiving element D30 that receives the signal of telecommunication, output unit R30 and one-chip computer module MCU1, photosensor signal receiving element D30, output unit R30 is connected on one-chip computer module MCU1, output unit R30 connects respectively relay 2 and power output interface 5.The described one-chip computer module MCU1 of the present embodiment is the park mode one-chip computer module, and pfc circuit 3 described in the utility model is the interleaving PFC circuit.

When controlling the LCD/LED TV, the work of control circuit 1 as shown in Figure 2:

When needs are closed the LCD/LED TV, continued to send a signal to infrared signal receiving element D30 by remote control, infrared signal receiving element D30 passes to single-chip microprocessor MCU 1 with this signal after receiving this control signal, by single-chip microprocessor MCU 1 sending controling instruction to output unit R30, opened by output unit R30 control relay 2, whole circuit connects disconnection, and this moment, electric current directly exported power output interface to from control circuit 1; Electric current no longer flow through pfc circuit 3 and LLC half-bridge resonance circuit 4; Remote control sends a control signal to infrared signal receiving element D30 when needs are turned on the LCD/LED TV, infrared signal receiving element D30 passes to single-chip microprocessor MCU 1 with this signal after receiving this control signal, convert this signal to control command by single-chip microprocessor MCU 1 and transmit output unit R30, by output unit R30 control relay 2 closures, realize the conducting of whole circuit.

The utility model adopts the single-chip microcomputer of park mode, can wake up in the set time under holding state, effectively energy savings.

Embodiment 2.

The present embodiment and

embodiment

1 or 2 are basic identical, difference is also to be provided with the Opportunity awaiting control for linear unit on the described one-chip computer module of the present embodiment, the Opportunity awaiting control for linear unit is connected with power output interface 5 by output unit, after the LCD/LED TV is in for a long time a kind of state and reaches the time of clock control cell setting, TV can be crossed output unit with information exchange and send to single-chip microcomputer, can send control command by single-chip microcomputer, control relay disconnects.

Claims

1. little power consumption LCD/LED TV power supply of standby, comprise the pfc circuit (3), LLC half-bridge resonance circuit (4) and the power output interface (5) that connect successively, it is characterized in that: described low power consumption standby power supply also comprises a low-power control circuit, this low-power control circuit is comprised of power supply circuits (6), control circuit (1) and the relay (2) of successively connection, described relay (2) is connected with pfc circuit (3), and control circuit (1) is connected with power output interface (5).

2. the little power consumption LCD/LED TV power supply of a kind of standby as claimed in claim 1, it is characterized in that described control circuit (1) comprises one-chip computer module, signal receiving unit and output unit, described signal receiving unit and output unit are connected on one-chip computer module respectively, and described output unit is connected with relay (2).

3. the little power consumption LCD/LED TV power supply of a kind of standby as claimed in claim 2, is characterized in that described signal receiving unit is the infrared signal receiving element.

4. the little power consumption LCD/LED TV power supply of a kind of standby as claimed in claim 2, is characterized in that described one-chip computer module is the park mode one-chip computer module.

5. the little power consumption LCD/LED TV power supply of a kind of standby as claimed in claim 1, is characterized in that described power supply circuits (6) are connected with control circuit (1).

6. the little power consumption LCD/LED TV power supply of a kind of standby as claimed in claim 1, is characterized in that described pfc circuit (3) is the interleaving PFC circuit.

7. the little power consumption LCD/LED TV power supply of a kind of standby as claimed in claim 2 is characterized in that also being provided with on described one-chip computer module the Opportunity awaiting control for linear unit, and the Opportunity awaiting control for linear unit is connected with power output interface (5) by output unit.