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Energy-saving management circuit

A technology for managing circuits and power management chips, applied in the field of energy-saving management circuits

Inactive Publication Date: 2013-02-20
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the power consumption of existing personal computers is about 0.5-0.8W in the off state

Method used

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  • Energy-saving management circuit

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Embodiment Construction

[0010] see figure 1 , a preferred embodiment of the present invention provides an energy-saving management circuit 100, which is applied in electronic equipment such as computers. The energy saving management circuit 100 includes a power management unit 10 , a power control circuit 20 , an input / output (Input / Output) chip 30 and a south bridge 40 .

[0011] The power management unit 10 includes a power management chip U1, a power switch SW, a first resistor R1, a second resistor R2 and a capacitor C1. In this embodiment, the power consumption of the power management chip U1 during operation is 0.03W, which includes a power supply pin SB, a switch signal detection pin PWR, a power saving mode setting pin SEL, and a voltage control signal output pin OFF, switch control signal output pin BTN and shutdown identification pin SLPS.

[0012] The power supply pin SB is electrically connected to a standby power supply V of an electronic device to obtain working power, and at the same...

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PUM

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Abstract

The invention provides an energy-saving management circuit. The circuit is used in an electronic device and comprises a power supply management unit, a power supply control circuit, an input-output chip and a south bridge, wherein the power supply management unit comprises a power supply management chip, the power supply management chip is used for outputting a low-level voltage control signal to the power supply control circuit when the electronic device is started, so that the power supply control circuit is controlled to provide driving voltage for the input-output chip and the south bridge; and the power supply management chip is also used for outputting high-level voltage control signal to the power supply control circuit when after the electronic device performs shutdown operation, so that the power supply control circuit is controlled to stopping providing driving voltage for the input-output chip and the south bridge. The energy-saving management circuit can reduce the overall power consumption of the electronic device after shutdown effectively.

Description

technical field [0001] The present invention relates to an energy-saving management circuit, in particular to an energy-saving management circuit applied to electronic equipment such as a personal computer (PC). Background technique [0002] With the promotion of "energy saving and emission reduction" in various countries, low-carbon lifestyle has gradually become the development trend of families and enterprises. For example, the European Union has put forward stricter mandatory requirements in terms of personal computer energy saving, that is, when the personal computer sold after January 2010 is turned off, the power consumption of the whole machine cannot exceed 1W. The power consumption of the whole machine cannot exceed 0.5W. However, most of the power consumption of existing personal computers is about 0.5-0.8W in the off state. Obviously, it is imminent to reduce the overall power consumption of electronic devices such as computers when they are turned off. Conte...

Claims

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Application Information

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IPC IPC(8): G06F1/32
CPCG06F1/32G06F1/3287G06F1/3206Y02D10/00
Inventor 陈俊生何凤龙邹华
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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