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Power on/off circuit power supply management method capable of realizing shutdown zero power consumption

A switching circuit and power management technology, which is applied in the direction of data processing power supply, measuring device, measuring flow/mass flow, etc., to achieve zero power consumption, improve energy saving and emission reduction, and improve equipment performance

Inactive Publication Date: 2014-01-29
NANJING PANDA ELECTRONICS +1
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of certain shutdown power consumption in electronic equipment that only has the switch circuit still working after shutdown, and proposes a power management method for the switch circuit that can realize zero power consumption when the switch is turned off, so that when the switch circuit is shut down no power consumption

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  • Power on/off circuit power supply management method capable of realizing shutdown zero power consumption
  • Power on/off circuit power supply management method capable of realizing shutdown zero power consumption
  • Power on/off circuit power supply management method capable of realizing shutdown zero power consumption

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with the accompanying drawings and embodiments. The power management method for switching on and off circuits capable of realizing zero power consumption during shutdown. The core lies in the "OR gate" circuit marked with a light line, which realizes joint control of the voltage conversion chip through the key trigger signal and the switch signal. A specific management method when applied to an embedded terminal. Embedded terminals generally provide power for external DC adapters, and sometimes battery life is also added, and the power supply for the motherboard generally comes from a DC-DC group.

[0020] Usually the way of power management is to control the enable control terminal EN of the power supply chip (if used), and the enable control terminal EN of the power supply chip is often connected with various processed trigger signals or control signals to realize actual operation Preset power on a...

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Abstract

Provided is a power on / off circuit power supply management method capable of realizing power-off zero power consumption. According to the power on / off circuit power supply management method capable of realizing power-off zero power consumption, a power on / off circuit power supply is managed by collecting trigger signals of power on / off keys of controlled electronic equipment and power on / off signals generated by a power on / off circuit, the power on / off circuit is powered by a power supply chip controlled through an EN, namely a voltage conversion chip, the trigger signals of the power on / off keys and the system power on / off signals generated by the power on / off circuit form two paths of an 'OR gate', the two paths of the 'OR gate' are connected with EN pins of the voltage conversion chip and used for maintaining EN signals of the voltage conversion chip after the power on / off keys are released, an OR gate chip is provided with two input ends and an output end, the trigger signals generated by the power on / off keys of the controlled electronic equipment are connected through one path of input of the OR gate chip, and can switch off the power supply of the power on / off circuit after detecting the power on / off signals, and power-off zero power consumption of the equipment is achieved.

Description

technical field [0001] The invention relates to the field of power management methods for switching machine circuits, and is especially suitable for embedded electronic equipment in which only the switching machine circuits still need to work after shutdown. Background technique [0002] At present, the power management method of the switching machine circuit usually adopts the normal power supply mode. Since common electronic devices still need to switch on and off circuits to work normally after they are turned off, there is a certain amount of power consumption when the devices are turned off. Commonly used desktop computers, all-in-one computers, industrial computers, and embedded single-board computers and other equipment switch circuit power supply methods are as follows: use a voltage conversion chip without enable control, the input voltage comes from the 5V-SB that has undergone voltage conversion, The output voltage 3.3V-SB is used as the power supply for the swit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F1/32G06F1/26
Inventor 李华平徐瑛刘啸徐政
Owner NANJING PANDA ELECTRONICS
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