发明名称 |
OUTPUT OVER-VOLTAGE PROTECTION CIRCUIT FOR POWER FACTOR CORRECTION |
摘要 |
An output over-voltage protection circuit for power factor correction, which includes a chip external compensation network, a chip external resistor divider network, a static over-voltage detection circuit, a dynamic over-voltage detection circuit and a compare circuit; The chip external compensation network is connected between the chip external resistor divider network and the dynamic over-voltage detection circuit, the chip external compensation network converts the dynamic over-voltage signal conversion to the dynamic current signal and conveys it to the dynamic over-voltage detection circuit, the dynamic over-voltage detection circuit detects the dynamic current signal and ultimately produces the dynamic over-voltage signal (DYOVP); The dynamic over-voltage signal (DYOVP) is inputted into the compare circuit, which converts the dynamic over-voltage signal (DYOVP) into a voltage compared with a reference voltage and outputs a over-voltage control signal (OVP), so as to achieve a dynamic over-voltage protection function. |
申请公布号 |
US2014268464(A1) |
申请公布日期 |
2014.09.18 |
申请号 |
US201214357724 |
申请日期 |
2012.11.09 |
申请人 |
CSMC TECHNOLOGIES FAB2 CO., LTD. |
发明人 |
Dai Guoding;Ma Xiaohui;Xue ChaoYao;Ou Jian;Lu Jing |
分类号 |
H02H9/04 |
主分类号 |
H02H9/04 |
代理机构 |
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代理人 |
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主权项 |
1. An output over-voltage protection circuit for power factor correction, comprising:
an off-chip compensation network, an off-chip resistive divider network, a static over-voltage detection circuit, a dynamic over-voltage detection circuit, and a comparator circuit; wherein the off-chip compensation network is coupled between the off-chip resistive divider network and the dynamic over-voltage detection circuit, the off-chip compensation network is configured to convert a dynamic over-voltage signal to a dynamic current signal and transmit the dynamic current signal to the dynamic over-voltage detection circuit, the dynamic over-voltage detection circuit is configured to detect the dynamic current signal and generate a dynamic over-voltage signal DYOVP; the dynamic over-voltage signal DYOVP is inputted into the comparator circuit; the comparator circuit is configured to convert the dynamic over-voltage signal DYOVP to a voltage and compare the voltage with a reference voltage and output an over-voltage control signal OVP so as to perform a dynamic over-voltage protection function. |
地址 |
Jiangsu CN |