发明名称 |
Protection circuit for protecting a half-bridge circuit |
摘要 |
The present invention relates to a protection circuit for protecting a half-bridge circuit. The protection circuit detects an incorrect response of the half-bridge by monitoring the current of a first switch at a series resistor of a second switch. The protection circuit has a detector for detecting the voltage across the resistor and an evaluation circuit which is designed in such a manner that it evaluates an output signal from the detector after the first switch has been switched on and provides a fault signal at an output when the voltage across the resistor is greater than the threshold voltage. |
申请公布号 |
US9083243(B2) |
申请公布日期 |
2015.07.14 |
申请号 |
US201313893263 |
申请日期 |
2013.05.13 |
申请人 |
INFINEON TECHNOLOGIES AUSTRIA AG |
发明人 |
Feldtkeller Martin;Zipprick Dieter |
分类号 |
G05F1/40;H02M1/32;H02H7/122 |
主分类号 |
G05F1/40 |
代理机构 |
SpryIP, LLC |
代理人 |
SpryIP, LLC |
主权项 |
1. A method, comprising:
periodically alternately switching first and second switches for a switched-on duration; and counting periodically recurring intervals of time during which a voltage across a resistor exceeds a threshold value at least once. |
地址 |
Villach AT |