WO2017113601A1 - Zero power-consumption standby circuit and zero power-consumption standby television - Google Patents

Abstract

A zero power-consumption standby circuit and a zero power-consumption standby television are provided, the zero power consumption standby circuit comprising an AC power module (20) and a television main board (30) connected with the AC power module (20), the circuit further comprising: a switch module (10), used for connecting or disconnecting the AC power module (20) and an AC power input module (100); a power on/off control module (40), used for receiving an infrared power off signal transmitted by a remote control, outputting a power off control command to the switch module (10) according a received infrared power off signal to control the switch module (10) to disconnect, and outputting a cease power supply command to a transformer control module (60) according the received infrared power off signal; a transformer module (50) used for supplying power to the power on/off control module (40) and the switch module (10); and the transformer control module (60), used for controlling the transformer module (50) to cease operating according to the cease power supply command outputted by the power on/off control module (40). The zero power-consumption standby circuit and the zero power-consumption standby television can achieve zero power-consumption standby.

Description

 Zero-power standby circuit and zero-power standby TV

Technical field

The present invention relates to the field of television technology, and in particular, to a zero power standby circuit and a zero power standby television.

Background technique

At present, China is one of the world's largest producers and consumers of household appliances. The rapid growth of household appliances has brought huge energy consumption and increased environmental pollution. Countries around the world improve the energy efficiency of energy-using products by promoting energy efficiency standards and promoting energy efficiency labeling systems, and promote the development of energy-saving technologies to reduce harmful emissions and protect the environment.

Among the many household appliances, the market share of TV sets has been at the forefront. The energy-saving design and energy-saving algorithms for TVs have been widely used in existing product designs. According to the existing national energy efficiency standards, the standby power consumption of the TV set needs to be less than 0.5W, that is, when the TV is turned on, the power of the whole machine when the TV is in the standby state must be less than 0.5W.

In the existing television system, the standby principle is to turn off the AC power through the low-power power management MCU, so that the AC power high-power output is in a non-working state. However, since the MCU itself is also an energy-consuming device, it is necessary to supply power to the MCU, such as using a low-power standby power supply or a battery to supply power to the MCU, so that during the standby process, the power management MCU continues to consume power, resulting in wasted power. How to reduce the power consumption of the TV in standby mode is an urgent problem to be solved.

The above content is only used to assist in understanding the technical solutions of the present invention, and does not constitute an admission that the above is prior art.

Summary of the invention

The main object of the present invention is to provide a zero-power standby circuit and a zero-power standby television, which are designed to achieve zero power consumption in standby mode, and reduce power loss and economic loss.

In order to achieve the above object, the present invention provides a zero-power standby circuit, including an AC power module, and a TV motherboard connected to the AC power module, wherein the circuit further includes: connecting the AC power module to the AC a switch module between the power input modules, an on/off control module connected to the switch module, a transformer control module connected to the on/off control module, and the on/off control module and the transformer control module respectively Transformer module, the switch module is also connected to the transformer module; wherein:

The switch module is configured to connect or disconnect the AC power module and the AC power input module;

The on/off control module is configured to receive an infrared shutdown signal sent by the remote controller, and output a shutdown control command to the switch module according to the received infrared shutdown signal to control the switch module to be disconnected; and receive according to the receiving The infrared shutdown signal outputs a power supply stop command to the transformer control module;

a transformer module, configured to supply power to the on/off control module and the switch module;

a transformer control module, configured to control the transformer module to stop working according to the power-off command output by the on/off control module;

The circuit further includes a voltage stabilizing module respectively connected to the transformer module and the on/off control module, wherein the voltage stabilizing module regulates a voltage outputted by the transformer module to provide a stable voltage for the on/off control module;

The transformer module includes a transformer, a first MOS transistor, a driving chip and a first resistor, an output end of the driving chip is connected to a gate of the first MOS transistor, and a control end of the driving chip is connected to the transformer control module a source of the first MOS transistor is grounded, a drain of the first MOS transistor is connected to a first end of a primary coil winding of the transformer, and a second end of the primary coil winding of the transformer is connected to an AC power input module a first end of the secondary winding of the transformer is connected to an open/close control module, and a second end of the secondary winding of the transformer is grounded; a first end of the first resistor is connected to an auxiliary coil of the transformer A first end of the winding, a second end of the first resistor is coupled to a power terminal of the driver chip, and a second end of the auxiliary coil winding of the transformer is grounded.

Preferably, the circuit further includes a wireless module, an infrared receiving module connected to the wireless module, and the infrared receiving module is connected to the transformer control module, wherein:

The wireless module is configured to receive a wireless signal sent by the remote controller, generate a startup command according to the wireless signal, and output the startup command to the infrared receiving module;

The infrared receiving module is configured to receive an infrared power-on signal sent by the remote controller, and output a power-supply command to the transformer control module according to the received infrared power-on signal and a start command;

The transformer control module is further configured to control the start of operation of the transformer according to the received start power supply command;

The on/off control module is further configured to receive an infrared power-on signal sent by the remote controller, and output a power-on control command to the switch module according to the received infrared power-on signal to control the switch module to be turned on.

Preferably, the transformer module further includes a transformer first diode, a positive pole of the first diode is connected to a second end of the first resistor, and a cathode of the first diode is connected to the driving chip The power side.

Preferably, the transformer control module includes a first triode, a gate of the first triode is connected to an on/off control module, a source of the first triode is grounded, and the first three poles The drain of the tube is connected to the control terminal of the driver chip.

Preferably, the transformer control module further includes a first capacitor, a second triode, a third triode, and a second resistor, the source of the second triode being connected to the second end of the primary coil winding of the transformer The drain of the second transistor is respectively connected to the first end of the first capacitor and the power end of the driving chip through the second resistor, and the gate of the second transistor is connected to the third three pole a drain of the tube, a second end of the first capacitor is grounded, a gate of the third transistor is connected to an infrared receiving module, and a source of the third transistor is grounded.

Preferably, the infrared receiving module includes a third resistor, a second capacitor, a first infrared receiving diode, a fourth resistor and a fifth resistor, a first end of the third resistor is grounded, and a second resistor is second The second end of the second capacitor, the second end of the first infrared receiving diode, the anode of the first infrared receiving diode is connected to the first end of the fourth resistor, and the fourth resistor is connected The second end is connected to the second end of the fifth resistor and the gate of the third transistor, the first end of the fifth resistor is grounded, and the first end of the second capacitor is grounded.

Preferably, the switch module comprises a relay and a fourth triode, the relay comprises a first leg, a second leg, a third leg, a fourth leg, a fifth leg and a sixth leg, the first of the relay a foot is connected to the transformer module, a second leg of the relay is connected to a drain of the fourth transistor, a third leg of the relay is connected to a live line of the AC power input module, and a fourth leg of the relay is connected to the AC a live line of the power module, a fifth leg of the relay is connected to a neutral line of the AC power input module, a sixth leg of the relay is connected to a neutral line of the AC power module, and a source of the fourth triode is grounded, The gate of the fourth transistor is connected to the on/off control module.

Preferably, the switch module comprises a relay and a fourth triode, the relay comprises a first leg, a second leg, a third leg, a fourth leg, a fifth leg and a sixth leg, the first of the relay a foot is connected to the transformer module, a second leg of the relay is connected to a drain of the fourth transistor, a third leg of the relay is connected to a live line of the AC power input module, and a fourth leg of the relay is connected to the AC a live line of the power module, a fifth leg of the relay is connected to a neutral line of the AC power input module, a sixth leg of the relay is connected to a neutral line of the AC power module, and a source of the fourth triode is grounded, The gate of the fourth transistor is connected to the on/off control module.

To achieve the above object, the present invention provides a zero-power standby circuit, the circuit comprising an AC power module, a TV motherboard connected to the AC power module, the circuit further comprising: connecting the AC power module and the AC power input a switch module between the modules, an on/off control module connected to the switch module, a transformer control module connected to the on/off control module, and a transformer respectively connected to the on/off control module and the transformer control module a module, the switch module is further connected to the transformer module; wherein:

The switch module is configured to connect or disconnect the AC power module and the AC power input module;

The on/off control module is configured to receive an infrared shutdown signal sent by the remote controller, and output a shutdown control command to the switch module according to the received infrared shutdown signal to control the switch module to be disconnected; and receive according to the receiving The infrared shutdown signal outputs a power supply stop command to the transformer control module;

a transformer module, configured to supply power to the on/off control module and the switch module;

And a transformer control module, configured to control the transformer module to stop working according to the power-off command output by the on/off control module.

Preferably, the circuit further includes a wireless module, an infrared receiving module connected to the wireless module, and the infrared receiving module is connected to the transformer control module, wherein:

The wireless module is configured to receive a wireless signal sent by the remote controller, generate a startup command according to the wireless signal, and output the startup command to the infrared receiving module;

The infrared receiving module is configured to receive an infrared power-on signal sent by the remote controller, and output a power-supply command to the transformer control module according to the received infrared power-on signal and a start command;

The transformer control module is further configured to control the start of operation of the transformer according to the received start power supply command;

The on/off control module is further configured to receive an infrared power-on signal sent by the remote controller, and output a power-on control command to the switch module according to the received infrared power-on signal to control the switch module to be turned on.

Preferably, the circuit further includes a voltage stabilizing module respectively connected to the transformer module and the on/off control module, and the voltage stabilizing module regulates the voltage outputted by the transformer module to provide stable stability for the on/off control module. Voltage.

Preferably, the transformer module includes a transformer, a first MOS transistor, a driving chip and a first resistor, an output end of the driving chip is connected to a gate of the first MOS transistor, and a control end of the driving chip is connected to the a transformer control module, a source of the first MOS transistor is grounded, a drain of the first MOS transistor is connected to a first end of a primary coil winding of the transformer, and a second end of the primary coil winding of the transformer is connected to an AC a power input module, a first end of the secondary winding of the transformer is connected to an open/close control module, and a second end of the secondary winding of the transformer is grounded; a first end of the first resistor is connected to the transformer The first end of the auxiliary coil winding, the second end of the first resistor is connected to the power end of the driving chip, and the second end of the auxiliary coil winding of the transformer is grounded.

Preferably, the transformer module further includes a transformer first diode, a positive pole of the first diode is connected to a second end of the first resistor, and a cathode of the first diode is connected to the driving chip The power side.

Preferably, the transformer control module includes a first triode, a gate of the first triode is connected to an on/off control module, a source of the first triode is grounded, and the first three poles The drain of the tube is connected to the control terminal of the driver chip.

Preferably, the transformer control module further includes a first capacitor, a second triode, a third triode, and a second resistor, the source of the second triode being connected to the second end of the primary coil winding of the transformer The drain of the second transistor is respectively connected to the first end of the first capacitor and the power end of the driving chip through the second resistor, and the gate of the second transistor is connected to the third three pole a drain of the tube, a second end of the first capacitor is grounded, a gate of the third transistor is connected to an infrared receiving module, and a source of the third transistor is grounded.

Preferably, the infrared receiving module includes a third resistor, a second capacitor, a first infrared receiving diode, a fourth resistor and a fifth resistor, a first end of the third resistor is grounded, and a second resistor is second The second end of the second capacitor, the second end of the first infrared receiving diode, the anode of the first infrared receiving diode is connected to the first end of the fourth resistor, and the fourth resistor is connected The second end is connected to the second end of the fifth resistor and the gate of the third transistor, the first end of the fifth resistor is grounded, and the first end of the second capacitor is grounded.

Preferably, the switch module comprises a relay and a fourth triode, the relay comprises a first leg, a second leg, a third leg, a fourth leg, a fifth leg and a sixth leg, the first of the relay a foot is connected to the transformer module, a second leg of the relay is connected to a drain of the fourth transistor, a third leg of the relay is connected to a live line of the AC power input module, and a fourth leg of the relay is connected to the AC a live line of the power module, a fifth leg of the relay is connected to a neutral line of the AC power input module, a sixth leg of the relay is connected to a neutral line of the AC power module, and a source of the fourth triode is grounded, The gate of the fourth transistor is connected to the on/off control module.

In addition, in order to achieve the above object, the present invention further provides a zero-power standby television, wherein the zero-power standby television includes the above-mentioned zero-power standby circuit, and a remote controller connected to the zero-power standby circuit. The remote controller includes: a shutdown button, a power-on button, a control unit respectively connected to the shutdown button and the power-on button, and an infrared transmitting unit and a wireless transmitting unit respectively connected to the control unit;

The control unit is configured to control the infrared transmitting unit to emit an infrared shutdown signal when receiving the shutdown button signal sent by the shutdown button, and to control when the power button signal sent by the power button is received The infrared transmitting unit transmits an infrared power-on signal and controls the wireless transmitting unit to transmit a wireless signal.

The zero-power standby circuit and the zero-power standby television of the present invention, the zero-power standby circuit includes an AC power module, and a TV motherboard connected to the AC power module, the circuit further comprising: connecting to the AC power module a switch module connected to the AC power input module, an on/off control module connected to the switch module, a transformer control module connected to the on/off control module, and the on/off control module and the transformer control module a separately connected transformer module, wherein the switch module is further connected to the transformer module; wherein: the switch module is configured to connect or disconnect the AC power input module to an AC power input module; An on/off control module, configured to receive an infrared shutdown signal sent by the remote controller, and output a shutdown control command to the switch module according to the received infrared shutdown signal to control the switch module to be disconnected; and according to the received infrared The shutdown signal outputs a stop power supply command to the transformer control module; the transformer module is configured to be the on/off control module and the switch a module power supply; a transformer control module, configured to control the transformer module to stop working according to the power-off command output by the on/off control module; and adopting the invention, the on/off control module control switch when receiving an infrared shutdown signal The module is disconnected, so that the AC power module cannot obtain power from the AC power input module, and the on/off control module controls to output a stop power supply command to the transformer control module, and the transformer control module controls the transformer module to stop working according to the stop power supply command, The transformer module stops supplying power to the on/off control module to achieve zero power standby.

DRAWINGS

1 is a schematic diagram of functional modules of a zero-power standby circuit of the present invention;

2 is a circuit diagram of an embodiment of a zero power standby circuit of the present invention.

The implementation, functional features, and advantages of the present invention will be further described in conjunction with the embodiments.

detailed description

It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to FIG. 1 , FIG. 1 is a zero-power standby circuit of the present invention. The circuit includes an AC power module 20 , and a TV motherboard 30 connected to the AC power module 20 is connected between the AC power module 20 and the AC power input module 100 . The switch module 10, the on/off control module 40 connected to the switch module 10, the transformer control module 60 connected to the on/off control module 40, and the on/off control module 40 and the transformer control module 60 are respectively connected. a transformer module 50, the switch module 10 is also connected to the transformer module 50; wherein:

The switch module 10 is configured to connect or disconnect the AC power module 20 and the AC power input module 100;

The on/off control module 40 is configured to receive an infrared shutdown signal sent by the remote controller, and output a shutdown control command to the switch module 10 according to the received infrared shutdown signal to control the switch module 10 to be disconnected; and according to the received The infrared shutdown signal outputs a power supply stop command to the transformer control module 60;

The transformer module 50 is configured to supply power to the on/off control module 40 and the switch module 10;

The transformer control module 60 is configured to control the transformer module 50 to stop operating according to the power-off command output by the on/off control module 40.

The on/off control module 40 receives the infrared start signal sent by the remote controller, and outputs a shutdown control command to the switch module 10 according to the received infrared shutdown signal. The shutdown control command is a low level signal, and the switch module 10 receives the low signal. During the level signal, the power supply path between the AC power module 20 and the AC power input module 100 is disconnected, the AC power input module 100 stops supplying power to the AC power module 20, the AC power module 20 stops working, and the TV main board 30 is powered off. The status causes it to stop working and the TV goes into standby.

The on/off control module 40 further outputs a stop power supply command to the transformer control module 60 according to the received infrared shutdown signal, the stop power supply is a high level signal, and the transformer control module 60 stops the power supply command and stops the control transformer module 50. After the transformer module 50 stops working, the transformer module 50 cannot supply power to the on/off control module 40; after the transformer module 50 stops working, the transformer module 50 cannot supply power to the switch module 10, so that the zero power consumption standby Each module in the circuit is inactive and has no power to achieve zero power standby.

Further, the zero-power standby circuit further includes a wireless module 80, and an infrared receiving module 70 connected to the wireless module 80. The infrared receiving module 70 is connected to the transformer control module 60.

The wireless module 80 is configured to receive a wireless signal sent by the remote controller, and generate a start command according to the wireless signal, and output the start command to the infrared receiving module 70;

The infrared receiving module 70 is configured to receive an infrared power-on signal sent by the remote controller, and output a power-supply command to the transformer control module 60 according to the received infrared power-on signal and a start command;

The transformer control module 60 is further configured to control the transformer module 50 to start working according to the received start power supply command;

The on/off control module 40 is further configured to receive an infrared power-on signal sent by the remote controller, and output a power-on control command to the switch module 10 according to the received infrared power-on signal to control the switch module 10 to be turned on.

The wireless module 80 includes an antenna, a frequency selective network unit connected to the antenna, and a high frequency rectification filtering unit connected to the frequency selective network unit. The wireless module 80 receives the wireless signal sent by the remote controller through the antenna, and the frequency selection network unit allows The useful wireless signal received by the antenna passes to block other useless wireless signals. In this embodiment, the frequency of the useful wireless signal is 5.800 Ghz, and the center frequency of the frequency selective network unit is the same as the frequency of the useful wireless signal. Also for 5.800Ghz, the bandwidth of the frequency selective network unit is 500Mhz; the high frequency rectification filtering unit in the wireless module 80 rectifies and filters the useful wireless signal outputted by the frequency selective network unit to generate a start command, which is a high level. V1. The wireless module 80 outputs the startup command to the infrared receiving module 70.

The infrared receiving module 70 receives the infrared starting signal sent by the remote controller, and is turned on when receiving the infrared starting signal, and the infrared receiving module 70 outputs a starting power supply command to the transformer control module 60 according to the starting command, so that the transformer control module 60 The transformer control module 60 is controlled to supply power to the transformer module 50. The start power command is high.

The transformer control module 60 controls the transformer module 50 to start operating according to the received start power supply command, so that the transformer module 50 starts to work, and supplies power to the on/off control module 40, thereby causing the on/off control module 40 to operate normally.

The on/off control module 40 receives the infrared power-on signal sent by the remote controller, and outputs a power-on control command to the switch module 10 according to the received infrared power-on signal. The power-on control command is a high-level signal, and the switch module 10 receives the high signal. During the level signal, the power supply path between the AC power module 20 and the AC power input module 100 is turned on, and the AC power module 20 performs corresponding voltage conversion on the commercial power input by the AC power input module 100 to supply power to the TV main board 30. The TV main board 30 starts working and the TV enters a normal working state.

Further, the zero-power standby circuit further includes a voltage stabilizing module 90 connected to the transformer module 50 and the on/off control module 40, respectively. The voltage stabilizing module 90 regulates the voltage output by the transformer module 50 to provide a stable voltage for the on/off control module 40.

The circuit configuration of the zero power standby circuit will be described below with reference to FIG.

As shown in FIG. 2, the transformer module 50 includes a transformer, a first MOS transistor Q1, a driving chip IC1, and a first resistor R1. The output end of the driving chip IC1 is connected to the gate of the first MOS transistor Q1. The driving chip IC1 The control terminal is connected to the transformer control module 60, the source of the first MOS transistor is grounded, the drain of the first MOS transistor Q1 is connected to the first end of the primary coil winding of the transformer T1, and the primary winding of the transformer T1 is The second end is connected to the AC power input module 100, the first end of the secondary coil winding of the transformer T1 is connected to the on/off control module 40, and the second end of the secondary winding of the transformer T1 is grounded; the first resistor R1 is The first end is connected to the first end of the auxiliary winding of the transformer T1, the second end of the first resistor R1 is connected to the power end of the driving chip IC1, and the second end of the auxiliary winding of the transformer T1 is grounded. The transformer T1 module 50 further includes a sixth resistor R6 and a seventh resistor R7. The first end of the sixth resistor R6 is connected to the input terminal BO of the driving chip IC1, and the second end of the sixth resistor R6 is connected to the transformer control module 60. The first end of the seventh resistor R7 is connected to the input terminal BO of the driving chip IC1, and the second end of the seventh resistor R7 is grounded. Further, the transformer module 50 further includes a rectifier bridge BD1 and a filter capacitor C5. The second end of the primary coil winding of the transformer T1 is connected to the AC power input module 100 through a rectifier bridge BD1, and the first input end of the rectifier bridge BD1 is connected to the AC. The power line of the power input module 100, the second input end of the rectifier bridge BD1 is connected to the neutral line of the AC power input module 100, and the first output end of the rectifier bridge BD1 is connected to the second end of the primary coil winding of the transformer T1, the rectifier bridge The second output end of the BD1 is grounded, and the filter capacitor C5 is juxtaposed between the first output end and the second output end of the rectifier bridge BD1.

As shown in FIG. 2, the transformer control module 60 includes a first transistor Q2, a first capacitor C1, a second transistor Q3, a third transistor Q4, and a second resistor R2. The first transistor Q2 The gate is connected to the on/off control module 40, the source of the first transistor Q2 is grounded, the drain of the first transistor Q2 is connected to the control terminal of the driving chip IC1, and the second transistor Q3 is The source is connected to the second end of the primary winding of the transformer T1, and the drain of the second transistor Q3 is connected to the first end of the first capacitor C1 and the power end of the driving chip IC1 through the second resistor R2. The gate of the second transistor Q3 is connected to the drain of the third transistor Q4, the second end of the first capacitor C1 is grounded, and the gate of the third transistor Q4 is connected to the infrared receiving module 70, the third The source of transistor Q4 is grounded.

As shown in FIG. 2, the infrared receiving module 70 includes a third resistor R3, a second capacitor C2, a first infrared receiving diode D3, a fourth resistor R4, and a fifth resistor R5. The first end of the third resistor R3 is grounded. The second end of the third resistor R3 is connected to the second end of the second capacitor C2 and the cathode of the first infrared receiving diode D3. The anode of the first infrared receiving diode D3 is connected to the fourth resistor R4. The first end of the fourth resistor R4 is connected to the second end of the fifth resistor R5 and the gate of the third transistor Q4, and the first end of the fifth resistor R5 is grounded.

As shown in FIG. 2, the switch module 10 includes a relay K2 and a fourth transistor Q5. The relay includes a first leg, a second leg, a third leg, a fourth leg, a fifth leg, and a sixth leg. The relay The first leg of K2 is connected to the transformer module 50, the second leg of the relay K2 is connected to the drain of the fourth transistor Q5, and the third leg of the relay K2 is connected to the live wire of the AC power input module 100, the relay K2 The fourth leg is connected to the live wire of the AC power module 20, the fifth leg of the relay K2 is connected to the neutral line of the AC power input module 100, and the sixth leg of the relay K2 is connected to the neutral line of the AC power module 20, the fourth transistor The source of Q5 is grounded, and the gate of the fourth transistor Q5 is connected to the on/off control module 40.

As shown in FIG. 2, the wireless module 80 includes an antenna, a frequency selective network unit connected to the antenna, and a high frequency rectification filtering unit connected to the frequency selective network unit, and the wireless module 80 receives the wireless signal sent by the remote controller through the antenna. The frequency selective network unit passes the useful wireless signal received by the antenna to block other useless wireless signals. In this embodiment, the frequency of the useful wireless signal is 5.800 Ghz, the center frequency of the frequency selective network unit and the useful The frequency of the wireless signal is the same, which is also 5.800Ghz, and the bandwidth of the frequency selective network unit is 500Mhz; the high frequency rectification filtering unit in the wireless module 80 rectifies and filters the useful wireless signal output by the frequency selective network unit to generate a startup command. The start command is high level V1. The wireless module 80 outputs the startup command to the infrared receiving module 70.

The working principle of the zero-power standby circuit will be described in detail below.

Boot process:

When the user presses the power button on the remote controller, a power button signal is generated, and the remote controller simultaneously transmits an infrared power on signal and a wireless signal according to the power button signal, and the frequency Fs of the transmitted wireless signal is 5.800 Ghz. The wireless module 80 receives the wireless signal sent by the remote controller through the antenna, and the frequency selective network unit passes the wireless signal with the frequency of 5.800Ghz received by the antenna to block other useless wireless signals; the high frequency rectifying and filtering unit in the wireless module 80 selects The wireless signal outputted by the frequency network unit is rectified and filtered to output a high level V1; at the same time, the first infrared receiving diode D3 receives the infrared starting signal sent by the remote controller, and is turned on after receiving the infrared starting signal; the high level V1 The second capacitor C2 is charged, and after the second capacitor C2 is fully charged, the path formed by the second capacitor C2 through the first infrared receiving diode D3 and the fourth resistor R4 provides a high gate of the third transistor Q4. Level, the third transistor Q4 is turned on, and then the second transistor Q3 is turned on, and the AC power input module 100 passes the high voltage HV+ outputted by the AC rectifying and filtering unit through the second transistor Q3 and the second resistor R2. The first capacitor C1 is charged. When the voltage on the first capacitor C1 reaches the starting voltage of the driving chip IC1, the driving chip IC1 is started, and the output terminal GATE of the driving chip IC1 outputs PWM. No., the first MOS transistor Q1 is turned on, the first MOS transistor Q1 is turned on, and the transformer T1 is operated, and the first end of the secondary winding of the transformer T1 outputs a voltage V2 to supply power to the on/off control module 40. The first end of the auxiliary winding of the transformer T1 supplies power to the power supply terminal VCC of the driving chip IC1 through the first resistor R1, so that the driving chip IC1 maintains operation. After the on/off control module 40 is working, the on/off control module 40 receives the infrared start signal sent by the remote controller, and inputs a high level to the gate of the fourth transistor Q5 according to the infrared start signal, the fourth three The pole tube Q5 is turned on, and the relay K2 is turned on to turn on the power supply path between the AC power module 20 and the AC power input module 100, and the AC power module 20 performs corresponding voltage conversion on the commercial power input by the AC power input module 100. To power the TV motherboard 30, the TV motherboard 30 starts working, and the TV enters a normal working state.

When the user releases the power button on the remote controller, the remote controller stops transmitting the infrared power on signal and the wireless signal, and the wireless module 80 does not receive the wireless signal, the wireless module 80 cannot output the high level V1, the first The infrared receiving diode D3 also does not receive the infrared power-on signal, the first infrared receiving diode D3 is not turned on, and the second capacitor C2 is discharged through the third resistor R3, so that the second capacitor C2 does not store electrical energy, and the first An infrared receiving diode D3 cannot provide a high level for the gate of the third transistor Q4, the third transistor Q4 is turned off, and the second transistor Q3 is turned off; since the first capacitor C1 passes through the sixth resistor R6 and The seventh resistor R7 is discharged, so that the first capacitor C1 does not store electric energy, and the first capacitor C1 cannot provide a starting voltage for the power terminal VCC of the driving chip IC1, but the auxiliary coil winding of the transformer T1 is connected to the driving chip through the first resistor R1. The power supply terminal VCC of IC1, the transformer T1 is in an operating state, so the transformer T1 provides a starting voltage for the power supply terminal VCC of the driving chip IC1, and the driving chip IC1 maintains the operation, The pressure device T1 continues to work normally, and supplies power to the on/off control module 40. The on/off control module 40 continues to output a high level to the fourth transistor Q5, so that the relay K2 continues to conduct, turning on the AC power module 20 and The power supply path between the AC power input modules 100.

Standby process:

When the user presses the shutdown button on the remote controller, a shutdown button signal is generated, and the remote controller transmits an infrared shutdown signal according to the power button signal. The on/off control module 40 receives the infrared shutdown signal sent by the remote controller, and inputs a low level to the gate of the fourth transistor Q5 according to the infrared shutdown signal, and the fourth transistor Q5 is turned off, and then the relay K2 The third leg and the fourth leg of the relay K2 are disconnected, the fifth leg and the sixth leg of the relay K2 are disconnected, and the AC power module 20 is disconnected from the AC power input module 100. Power cannot be obtained from the AC power input module 100, which is equivalent to the TV being unplugged. The on/off control module 40 further inputs a high level to the gate of the first diode D1 according to the infrared shutdown signal, and the first diode D1 is turned on, so that the control terminal FB of the driving chip IC1 is at a low level. Since the control terminal FB of the driving chip IC1 is at a low level, the output terminal GATA of the driving chip IC1 has no driving output, that is, the output terminal GATE of the driving chip IC1 does not output a PWM signal, and the first MOS transistor Q1 is turned off, and further After the transformer T1 stops working, after the transformer T1 stops working, the first end of the auxiliary coil winding cannot output a voltage, that is, the starting voltage cannot be supplied to the power terminal VCC of the driving chip IC1, and the driving chip IC1 stops working; after the transformer T1 stops working, The voltage of the on/off control module 40 and the switch module 10 cannot be supplied, and the voltage of the on/off control module 40 and the switch module 10 is also stopped. At this point, the driver chip IC1 and the transformer T1 in the transformer T1 module 50 are also turned on. / Shutdown control module 40 stops working, and no external voltage supply, to achieve zero power standby.

Further, as shown in FIG. 2, the transformer T1 module 50 further includes a first diode D1. The anode of the first diode D1 is connected to the second end of the first resistor R1. The first diode D1 The negative pole is connected to the power supply terminal VCC of the driving chip IC1 to prevent current from flowing between the voltage on the first capacitor C1 and the voltage outputted from the first end of the auxiliary winding of the transformer T1, so that the first end of the first capacitor C1 The high level will not be transmitted to the auxiliary winding of the transformer T1, which plays a very good protection role, and prevents the current backflow from affecting the first capacitor C1 to provide the starting voltage for the power supply end of the driving chip IC1. The transformer T1 module 50 further includes a nineteenth resistor R19 and a tens ten resistor R20. The first end of the nineteenth resistor R19 is connected to the chip select terminal CS of the driving chip IC1, and the second end of the nineteenth resistor R19 is connected. The first terminal of the PMOS transistor Q1 is connected to the first terminal of the first MOS transistor Q1, and the second terminal of the twentieth resistor R20 is grounded.

Further, as shown in FIG. 2, the switch module 10 further includes an eighth resistor R8 and a ninth resistor R9. The first end of the eighth resistor R8 is connected to the gate of the fourth transistor Q5, and the eighth resistor R8 The second end is connected to the on/off control module 40. The first end of the ninth resistor R9 is connected to the gate of the fourth transistor Q5, and the second end of the ninth resistor R9 is grounded. The eighth resistor R8 and the ninth resistor R9 form a voltage dividing circuit, so that a total voltage difference exists between the gate and the source of the fourth transistor Q5, so that the fourth transistor Q5 can be fully turned on or off. At the same time, it can protect the fourth transistor Q5.

Further, as shown in FIG. 2, the transformer control module 60 further includes a tenth resistor R10 and an eleventh resistor R11. The first end of the tenth resistor R10 is connected to the gate of the first transistor Q2. The second end of the resistor R10 is connected to the on/off control module 40. The first end of the eleventh resistor R11 is connected to the gate of the first transistor Q2, and the second end of the eleventh resistor R11 is grounded. The tenth resistor R10 and the eleventh resistor R11 form a voltage dividing circuit, so that a total voltage difference exists between the gate and the source of the first transistor Q2, so that the first transistor Q2 can be fully turned on. Or cut off, while protecting the first transistor Q2.

Further, as shown in FIG. 2, the transformer control module 60 further includes a twelfth resistor R12 and a thirteenth resistor R13. The twelfth resistor R12 is connected between the drain and the gate of the second transistor Q3. The first end of the thirteenth resistor R13 is connected to the gate of the second transistor Q3, and the second end of the thirteenth resistor R13 is connected to the drain of the third transistor Q4. The voltage dividing circuit is formed by the twelfth resistor R12 and the thirteenth resistor R13, so that a total voltage difference exists between the gate and the source of the second transistor Q3, so that the second transistor Q3 can be fully turned on. Or cut off, while also protecting the second transistor Q3.

Further, as shown in FIG. 2, the transformer control module 60 further includes an optocoupler PC1, and the voltage stabilizing module 90 includes a fourteenth resistor R14, a fifteenth resistor R15, a sixteenth resistor R16, and a seventeenth resistor R17. The eighteenth resistor R18, the adjustment tube IC2 and the third capacitor C3, the transformer module 50 further includes a second diode D2 and a fourth capacitor C4, the anode of the second diode D2 is connected to the secondary coil winding of the transformer T1 The first end of the second diode D2 is respectively connected to the first end of the fourth capacitor C4, the on/off control module 40, and the second end of the fourth capacitor C4 is connected to the secondary coil winding of the transformer T1. The second end of the fourth capacitor C4 is grounded; the collector of the receiving end of the optocoupler PC1 is connected to the control end FB of the driving chip IC1, and the emitter of the receiving end of the optocoupler PC1 is grounded, and the optocoupler PC1 is The anode of the emitter is connected to the drain of the first transistor Q2, the cathode of the adjustment tube IC2, the first end of the fifteenth resistor R15, and the first end of the third capacitor C3. The anodes of the emitters of the optocoupler PC1 are respectively connected. a second end of the fifteenth resistor R15, and a first end of the sixteenth resistor R16, The second end of the third capacitor C3 is connected to the first end of the fourteenth resistor R14, and the second end of the sixteenth resistor R16 is respectively connected to the negative pole of the second diode D2, a second end of the seventeenth resistor R17, the second end of the fourteenth resistor R14 is respectively connected to the first end of the seventeenth resistor R17, the first end of the eighteenth resistor R18, and the adjustment end of the adjusting tube IC2, The second end of the eighteenth resistor R18 is grounded.

The output voltage of the secondary winding of the transformer T1 is regulated by the voltage regulator module 90 to provide a stable voltage to the on/off control module 40.

When the first transistor Q2 is turned on, the output voltage of the secondary winding of the transformer T1 is in a strong conduction state through the sixteenth resistor R16, so that the control terminal FB of the driving chip IC1 is low. Level, the output of the driver chip IC1 GATA has no drive output.

Further, the present invention further provides a zero-power standby television, comprising the zero-power standby circuit as described above, and a remote controller connected to the zero-power standby circuit, the remote controller including: shutdown a button, a power button, a control unit respectively connected to the power button and the power button, and an infrared transmitting unit and a wireless transmitting unit respectively connected to the control unit;

The control unit is configured to control the infrared transmitting unit to emit an infrared shutdown signal when receiving the shutdown button signal sent by the shutdown button; and to control the infrared transmitting unit when receiving the power button signal sent by the power button The infrared start signal is transmitted and the wireless transmitting unit is controlled to transmit a wireless signal.

When receiving the power-on button signal sent by the power-on button, the remote controller simultaneously transmits an infrared power-on signal and a wireless signal, thereby saving battery power of the remote controller.

The above are only the preferred embodiments of the present invention, and are not intended to limit the scope of the invention, and the equivalent structure or equivalent process transformations made by the description of the present invention and the drawings are directly or indirectly applied to other related technical fields. The same is included in the scope of patent protection of the present invention.

Claims (20)

1. A zero-power standby circuit includes an AC power module, and a TV motherboard connected to the AC power module, wherein the circuit further includes: a switch module connected between the AC power module and the AC power input module And an open/close control module connected to the switch module, a transformer control module connected to the open/close control module, a transformer module respectively connected to the open/close control module and the transformer control module, and the switch module Also connected to the transformer module; wherein:

   The switch module is configured to connect or disconnect the AC power module and the AC power input module;

   The on/off control module is configured to receive an infrared shutdown signal sent by the remote controller, and output a shutdown control command to the switch module according to the received infrared shutdown signal to control the switch module to be disconnected; and receive according to the receiving The infrared shutdown signal outputs a power supply stop command to the transformer control module;

   a transformer module, configured to supply power to the on/off control module and the switch module;

   a transformer control module, configured to control the transformer module to stop working according to the power-off command output by the on/off control module;

   The circuit further includes a voltage stabilizing module respectively connected to the transformer module and the on/off control module, wherein the voltage stabilizing module regulates a voltage outputted by the transformer module to provide a stable voltage for the on/off control module;

   The transformer module includes a transformer, a first MOS transistor, a driving chip and a first resistor, an output end of the driving chip is connected to a gate of the first MOS transistor, and a control end of the driving chip is connected to the transformer control module a source of the first MOS transistor is grounded, a drain of the first MOS transistor is connected to a first end of a primary coil winding of the transformer, and a second end of the primary coil winding of the transformer is connected to an AC power input module a first end of the secondary winding of the transformer is connected to an open/close control module, and a second end of the secondary winding of the transformer is grounded; a first end of the first resistor is connected to an auxiliary coil of the transformer A first end of the winding, a second end of the first resistor is coupled to a power terminal of the driver chip, and a second end of the auxiliary coil winding of the transformer is grounded.
2. The zero-power standby circuit of claim 1 , wherein the circuit further comprises a wireless module, an infrared receiving module connected to the wireless module, wherein the infrared receiving module is connected to the transformer control module, wherein :

   The wireless module is configured to receive a wireless signal sent by the remote controller, generate a startup command according to the wireless signal, and output the startup command to the infrared receiving module;

   The infrared receiving module is configured to receive an infrared power-on signal sent by the remote controller, and output a power-supply command to the transformer control module according to the received infrared power-on signal and a start command;

   The transformer control module is further configured to control the start of operation of the transformer according to the received start power supply command;

   The on/off control module is further configured to receive an infrared power-on signal sent by the remote controller, and output a power-on control command to the switch module according to the received infrared power-on signal to control the switch module to be turned on.
3. The zero-power standby circuit of claim 1 , wherein the transformer module further comprises a transformer first diode, and a positive pole of the first diode is connected to a second end of the first resistor, A cathode of the first diode is connected to a power terminal of the driving chip.
4. The zero-power standby circuit of claim 1 , wherein the transformer control module comprises a first triode, the gate of the first triode is connected to an on/off control module, the first The source of the transistor is grounded, and the drain of the first transistor is connected to the control terminal of the driver chip.
5. The zero-power standby circuit of claim 3, wherein the transformer control module further comprises a first capacitor, a second transistor, a third transistor, and a second resistor, the second three poles The source of the tube is connected to the second end of the primary coil winding of the transformer, and the drain of the second transistor is respectively connected to the first end of the first capacitor and the power end of the driving chip through the second resistor, a gate of the diode is connected to a drain of the third transistor, a second end of the first capacitor is grounded, and a gate of the third transistor is connected to an infrared receiving module, the third three The source of the pole tube is grounded.
6. The zero-power standby circuit of claim 4, wherein the infrared receiving module comprises a third resistor, a second capacitor, a first infrared receiving diode, a fourth resistor and a fifth resistor, the third resistor The first end of the third resistor is grounded, and the second end of the third resistor is respectively connected to the wireless module, the second end of the second capacitor, the cathode of the first infrared receiving diode, and the anode of the first infrared receiving diode is connected to the a first end of the fourth resistor, a second end of the fourth resistor is respectively connected to the second end of the fifth resistor, a gate of the third transistor, and the first end of the fifth resistor is grounded The first end of the second capacitor is grounded.
7. The zero-power standby circuit of claim 1 , wherein the switch module comprises a relay and a fourth triode, the relay comprising a first leg, a second leg, a third leg, and a fourth leg, a fifth leg and a sixth leg, a first leg of the relay is connected to the transformer module, a second leg of the relay is connected to a drain of the fourth transistor, and a third leg of the relay is connected to an AC power source Input the fire line of the module, the fourth leg of the relay is connected to the live wire of the AC power module, the fifth leg of the relay is connected to the neutral line of the AC power input module, and the sixth leg of the relay is connected to the neutral line of the AC power module. The source of the fourth transistor is grounded, and the gate of the fourth transistor is connected to the on/off control module.
8. The zero-power standby circuit of claim 2, wherein the switch module comprises a relay and a fourth transistor, the relay comprising a first leg, a second leg, a third leg, a fourth leg, a fifth leg and a sixth leg, a first leg of the relay is connected to the transformer module, a second leg of the relay is connected to a drain of the fourth transistor, and a third leg of the relay is connected to an AC power source Input the fire line of the module, the fourth leg of the relay is connected to the live wire of the AC power module, the fifth leg of the relay is connected to the neutral line of the AC power input module, and the sixth leg of the relay is connected to the neutral line of the AC power module. The source of the fourth transistor is grounded, and the gate of the fourth transistor is connected to the on/off control module.
9. A zero-power standby circuit includes an AC power module, and a TV motherboard connected to the AC power module, wherein the circuit further includes: a switch module connected between the AC power module and the AC power input module And an open/close control module connected to the switch module, a transformer control module connected to the open/close control module, a transformer module respectively connected to the open/close control module and the transformer control module, and the switch module Also connected to the transformer module; wherein:

   The switch module is configured to connect or disconnect the AC power module and the AC power input module;

   The on/off control module is configured to receive an infrared shutdown signal sent by the remote controller, and output a shutdown control command to the switch module according to the received infrared shutdown signal to control the switch module to be disconnected; and receive according to the receiving The infrared shutdown signal outputs a power supply stop command to the transformer control module;

   a transformer module, configured to supply power to the on/off control module and the switch module;

   And a transformer control module, configured to control the transformer module to stop working according to the power-off command output by the on/off control module.
10. The zero-power standby circuit according to claim 9, wherein the circuit further comprises a wireless module, an infrared receiving module connected to the wireless module, and the infrared receiving module is connected to the transformer control module, wherein :

    The wireless module is configured to receive a wireless signal sent by the remote controller, generate a startup command according to the wireless signal, and output the startup command to the infrared receiving module;

    The infrared receiving module is configured to receive an infrared power-on signal sent by the remote controller, and output a power-supply command to the transformer control module according to the received infrared power-on signal and a start command;

    The transformer control module is further configured to control the start of operation of the transformer according to the received start power supply command;

    The on/off control module is further configured to receive an infrared power-on signal sent by the remote controller, and output a power-on control command to the switch module according to the received infrared power-on signal to control the switch module to be turned on.
11. The zero-power standby circuit according to claim 10, wherein the circuit further comprises a voltage stabilizing module respectively connected to the transformer module and the on/off control module, and the voltage stabilizing module outputs the transformer module The voltage is regulated to provide a stable voltage for the on/off control module.
12. The zero-power standby circuit according to claim 11, wherein the transformer module comprises a transformer, a first MOS transistor, a driving chip and a first resistor, and an output end of the driving chip is connected to the first MOS transistor a gate of the driving chip, the control terminal of the driving chip is connected to the transformer control module, a source of the first MOS transistor is grounded, and a drain of the first MOS transistor is connected to a first end of a primary coil winding of the transformer a second end of the primary coil winding of the transformer is connected to an AC power input module, a first end of the secondary winding of the transformer is connected to an on/off control module, and a second end of the secondary winding of the transformer is grounded a first end of the first resistor is connected to a first end of the auxiliary coil winding of the transformer, a second end of the first resistor is connected to a power end of the driving chip, and an auxiliary winding of the transformer is The two ends are grounded.
13. The zero-power standby circuit according to claim 12, wherein the transformer module further comprises a transformer first diode, and a positive pole of the first diode is connected to a second end of the first resistor, A cathode of the first diode is connected to a power terminal of the driving chip.
14. The zero-power standby circuit of claim 12, wherein the transformer control module comprises a first triode, the gate of the first triode is connected to an on/off control module, the first The source of the transistor is grounded, and the drain of the first transistor is connected to the control terminal of the driver chip.
15. The zero-power standby circuit of claim 13 wherein said transformer control module further comprises a first capacitor, a second transistor, a third transistor, and a second resistor, said second three pole The source of the tube is connected to the second end of the primary coil winding of the transformer, and the drain of the second transistor is respectively connected to the first end of the first capacitor and the power end of the driving chip through the second resistor, a gate of the diode is connected to a drain of the third transistor, a second end of the first capacitor is grounded, and a gate of the third transistor is connected to an infrared receiving module, the third three The source of the pole tube is grounded.
16. The zero-power standby circuit according to claim 14, wherein the infrared receiving module comprises a third resistor, a second capacitor, a first infrared receiving diode, a fourth resistor and a fifth resistor, and the third resistor The first end of the third resistor is grounded, and the second end of the third resistor is respectively connected to the wireless module, the second end of the second capacitor, the cathode of the first infrared receiving diode, and the anode of the first infrared receiving diode is connected to the a first end of the fourth resistor, a second end of the fourth resistor is respectively connected to the second end of the fifth resistor, a gate of the third transistor, and the first end of the fifth resistor is grounded The first end of the second capacitor is grounded.
17. The zero-power standby circuit of claim 9, wherein the switch module comprises a relay and a fourth transistor, the relay comprising a first leg, a second leg, a third leg, a fourth leg, a fifth leg and a sixth leg, a first leg of the relay is connected to the transformer module, a second leg of the relay is connected to a drain of the fourth transistor, and a third leg of the relay is connected to an AC power source Input the fire line of the module, the fourth leg of the relay is connected to the live wire of the AC power module, the fifth leg of the relay is connected to the neutral line of the AC power input module, and the sixth leg of the relay is connected to the neutral line of the AC power module. The source of the fourth transistor is grounded, and the gate of the fourth transistor is connected to the on/off control module.
18. A zero-power standby television, characterized in that the zero-power standby television includes the zero-power standby circuit according to claim 9, and a remote controller connected to the zero-power standby circuit, the remote control The device includes: a shutdown button, a power-on button, a control unit respectively connected to the shutdown button and the power-on button, and an infrared transmitting unit and a wireless transmitting unit respectively connected to the control unit;

    The control unit is configured to control the infrared transmitting unit to emit an infrared shutdown signal when receiving the shutdown button signal sent by the shutdown button, and to control when the power button signal sent by the power button is received The infrared transmitting unit transmits an infrared power-on signal and controls the wireless transmitting unit to transmit a wireless signal.
19. A zero-power standby television, characterized in that the zero-power standby television includes the zero-power standby circuit according to claim 11, and a remote controller connected to the zero-power standby circuit, the remote control The device includes: a shutdown button, a power-on button, a control unit respectively connected to the shutdown button and the power-on button, and an infrared transmitting unit and a wireless transmitting unit respectively connected to the control unit;

    The control unit is configured to control the infrared transmitting unit to emit an infrared shutdown signal when receiving the shutdown button signal sent by the shutdown button, and to control when the power button signal sent by the power button is received The infrared transmitting unit transmits an infrared power-on signal and controls the wireless transmitting unit to transmit a wireless signal.
20. A zero-power standby television, characterized in that the zero-power standby television includes the zero-power standby circuit according to claim 17, and a remote controller connected to the zero-power standby circuit, the remote control The device includes: a shutdown button, a power-on button, a control unit respectively connected to the shutdown button and the power-on button, and an infrared transmitting unit and a wireless transmitting unit respectively connected to the control unit;

    The control unit is configured to control the infrared transmitting unit to emit an infrared shutdown signal when receiving the shutdown button signal sent by the shutdown button, and to control when the power button signal sent by the power button is received The infrared transmitting unit transmits an infrared power-on signal and controls the wireless transmitting unit to transmit a wireless signal.