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Power supply device, over voltage protection unit thereof and over voltage protection method thereof

A technology of a power supply device and a power supply unit, which is applied in the direction of emergency protection circuit devices, electrical components, high-efficiency power electronic conversion, etc., can solve problems such as damage to the central processing unit 30, and achieve the effect of avoiding abnormal rise

Active Publication Date: 2010-01-20
ASUSTEK COMPUTER INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The negative pressure generated above often exceeds the tolerance of the central processing unit 30 for negative pressure, causing damage to the central processing unit 30

Method used

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  • Power supply device, over voltage protection unit thereof and over voltage protection method thereof
  • Power supply device, over voltage protection unit thereof and over voltage protection method thereof
  • Power supply device, over voltage protection unit thereof and over voltage protection method thereof

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Embodiment Construction

[0027] In the following embodiments, when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element, or intervening elements may be present. In contrast, when an element is referred to as being "directly connected" or "directly coupled" to another element, there are no intervening elements present.

[0028] image 3 It is a structural diagram of a power supply device according to a preferred embodiment of the present invention, please refer to image 3 . The power supply device includes a power supply unit 41 , an overvoltage protection unit 11 and a conversion unit 21 . The power supply unit 41 is used for providing power with different voltage levels. In this embodiment, the power supply unit 41 provides the standby power VSB (eg, 5V) and the system power VCC (eg, 12V). When the power supply unit 41 is disabled, the power supply unit 41 keeps supplying the standby power VSB and stops supply...

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PUM

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Abstract

The invention discloses a power supply device, an over voltage protection unit thereof and an over voltage protection method thereof. Because the over voltage protection unit is adopted to monitor core electric energy, when a voltage level of the core electric energy is higher than that of a reference voltage, the over voltage protection unit forbids the energy of the power supply device, so damages caused by an abnormal increase in the voltage level of the core electric energy to a capacitor or a load of a conversion unit can be avoided.

Description

technical field [0001] The present invention relates to an overvoltage protection unit and a method thereof, and more particularly, to an overvoltage protection unit and a method thereof applied to a power supply device. Background technique [0002] Generally, in the design of consumer electronic products, in order to prevent the electronic products from being damaged due to incorrect power input, an over-voltage protection (Over Voltage Protection) unit is often designed to protect the electronic products. [0003] E.g figure 1 Shown is an overvoltage protection circuit structure diagram of a known load. figure 1 It can be divided into four parts: the overvoltage protection unit 10 , the conversion unit 20 , the central processing unit 30 (CPU for short) and the power supply unit 40 . The overvoltage protection unit 10 includes a digital-to-analog converter 101 and a comparator 102 . The conversion unit 20 includes a pulse width modulation controller (Pulse Width Modula...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/10H02M3/155H02M3/157H02M1/32H02H7/122
CPCY02B70/16Y02B70/10
Inventor 黄农哲许志琬陈开富邱义文
Owner ASUSTEK COMPUTER INC