Back to results
US 2019/0158776 A1Published application
Method for reducing power consumption of power supply, power supply automatically reducing power consumption, and television
AssigneeShenzhen Skyworth-Rgb Electronic Co., Ltd.
InventorJianzhong CHEN
Life of this patent
Estimating the term…
Abstract
Provided are a method for reducing the power consumption of a power supply, a power supply capable of automatically reducing power consumption, and a television. The power supply includes: a voltage sampling circuit, an optocoupler feedback circuit, a deep standby control circuit, a power supply management circuit and an output rectifier filter. The output rectifier filter includes an output capacitor. The feedback amount (a second level or a first level) of the optocoupler feedback circuit changes as the charge amount of the output capacitor changes, intermittently controlling the power supply management circuit to stop working while achieving a constant voltage output.
Claims15
A method for reducing power consumption of a power supply, comprising:
- operating a voltage sampling circuit to acquire a voltage of an output capacitor;
- if the acquired voltage is a first preset voltage, operating an optocoupler feedback circuit to receive the first preset voltage and output a second level;
- operating a deep standby control circuit to receive the second level and control a power supply management circuit to start working;
- and operating the power supply management circuit to receive the second level, output a first constant voltage according to the second level and charge the output capacitor;
- and
- if the acquired voltage is a second preset voltage, operating the optocoupler feedback circuit to receive a second preset voltage and output a first level;
- operating the power supply management circuit to receive the first level and output a second constant voltage according to the first level;
- and operating the deep standby control circuit to receive the first level and control, after a turn-off time of a triode in the deep standby control circuit, the power supply management circuit to stop working and operating the output capacitor to power a load,
- wherein the first preset voltage is less than the second preset voltage, and the first level is less than the second level.
6 more elements
A power supply capable of automatically reducing power consumption thereof, comprising:
- a voltage sampling circuit, an optocoupler feedback circuit, a deep standby control circuit, a power supply management circuit and an output rectifier filter, wherein the output rectifier filter comprises an output capacitor;
- wherein the voltage sampling circuit is configured to acquire a voltage of the output capacitor;
- if the acquired voltage is a first preset voltage, the optocoupler feedback circuit is configured to receive a first preset voltage and output a second level;
- the deep standby control circuit is configured to receive the second level and control the power supply management circuit to start working;
- and the power supply management circuit is configured to receive the second level, output a first constant voltage according to the second level and charge the output capacitor;
- and
- if the acquired voltage is a second preset voltage, the optocoupler feedback circuit is configured to receive the second preset voltage and output a first level;
- the power supply management circuit is configured to receive the first level and output a second constant voltage according to the first level;
- and the deep standby control circuit is further configured to receive the first level and control, after a turn-off time of a triode in the deep standby control circuit, the power supply management circuit to stop working and a load is powered by the output capacitor.
6 more elements
A television, comprising a power supply automatically reducing power consumption, wherein
- the power supply automatically reducing power consumption comprises a voltage sampling circuit, an optocoupler feedback circuit, a deep standby control circuit, a power supply management circuit and an output rectifier filter;
- wherein the output rectifier filter comprises an output capacitor,
- the voltage sampling circuit acquires a voltage of the output capacitor;
- if the acquired voltage is a first preset voltage, the optocoupler feedback circuit is configured to receive the first preset voltage and output a second level, the deep standby control circuit is configured to receive the second level and control the power supply management circuit to start working;
- and the power supply management circuit is configured to receive the second level, output a first constant voltage according to the second level and charge the output capacitor;
- and
- if the acquired voltage is a second preset voltage, the optocoupler feedback circuit is further configured to receive the second preset voltage and output a first level;
- the power supply management circuit is configured to receive the first level and output a second constant voltage according to the first level;
- and the deep standby control circuit is further configured to receive the first level and control, after a turn-off time of a triode in the deep standby control circuit, the power supply management circuit to stop working and a load is powered by the output capacitor.
6 more elements
Dependencies are inferred from the claim text.