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Power supply device having overvoltage protection function

A technology of a power supply device and a power supply unit, which is applied in the direction of output power conversion devices, high-efficiency power electronic conversion, electrical components, etc., can solve problems such as the inability of the power conversion system to operate.

Inactive Publication Date: 2015-09-30
CHICONY POWER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, when the power output from the power output terminal Vo is higher than a predetermined value, the DC / DC power converter 100 stops power conversion, that is, even if the power supply device 1 stops supplying power, the power conversion system cannot operate as a result.

Method used

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  • Power supply device having overvoltage protection function
  • Power supply device having overvoltage protection function

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Embodiment Construction

[0051] Please refer to the accompanying drawings. The above and additional objects, features and advantages of the present disclosure will be better understood through the following illustrative and non-limiting detailed descriptions of preferred embodiments of the present disclosure.

[0052] Reference figure 2 , Is a circuit block diagram of the power supply device with overvoltage protection of the present invention. The power supply device 3 with overvoltage protection includes a power conversion unit 30, a controller 32, a compensation unit 34, a first switching element 36, an overvoltage protection unit 38 and a second switching element 40.

[0053] The power conversion unit 30 includes a main power output terminal VA and a standby current output terminal VB. The main power output terminal VA and the standby power output terminal VB respectively output voltages to a power conversion system (not shown) to provide power conversion system operation Time of electricity. When t...

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PUM

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Abstract

The invention discloses a power supply device having an overvoltage protection function comprising a power supply unit, a first switch element, a compensation unit, a controller, and an overvoltage protection unit. The power supply unit comprises a main power supply output end and a standby power supply output end. The power supply unit comprises a DC / DC power supply converter and a first induction resistor. The DC / DC power supply converter is provided with a power supply output end, and the first induction resistor is electrically connected with the power supply output end and the main power supply output end. The first switch element is electrically connected with the first induction resistor and the main power supply output end, and the compensation unit is electrically connected with the main power supply output end. The controller is electrically connected with the compensation unit and the power supply unit. The overvoltage protection unit is electrically connected with the main power supply output end, the first switch element, the standby power supply output end, the power supply output end, and the compensation unit.

Description

Technical field [0001] The invention relates to an over-power supply device, and more particularly to a power supply device with an over-voltage protection function. Background technique [0002] Reference figure 1 , Is an existing power supply device with overvoltage protection. The power supply device 1 with overvoltage protection includes a power conversion unit 10, a controller 12, a compensation unit 14, a first switching element 16, an overvoltage protection unit 18 and a second switching element 20. [0003] The power conversion unit 10 includes a main power output terminal VA and a standby power output terminal VB. The main power output terminal VA and the standby power output terminal VB are respectively used to output power to a power conversion system (not shown) to provide power conversion Electricity during system operation. Among them, when the power conversion system is operating in the standby mode, only the standby power output VB inputs power to the power conver...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/32
CPCY02B70/10
Inventor 尹列中颜嘉贤汪子鸿
Owner CHICONY POWER TECH CO LTD