发明名称 |
Over current protection circuit and power converter using the same |
摘要 |
An over current protection circuit and a power converter using the same. The over current protection circuit includes a soft start cell and an operational amplifier. The soft start cell outputs a soft start signal according to a direct current (DC) level, and the soft start signal increases progressively to the DC level in a soft start interval. The operational amplifier outputs an over current signal to a feedback control circuit according to the soft start signal and an inductance current of a switching converter so that a duty cycle of a driving signal from the feedback control circuit increases progressively in the soft start interval.
|
申请公布号 |
US8111529(B2) |
申请公布日期 |
2012.02.07 |
申请号 |
US20090394449 |
申请日期 |
2009.02.27 |
申请人 |
CHENG LAN-SHAN;HSIEH CHIH-YUAN;NOVATEK MICROELECTRONICS CORP. |
发明人 |
CHENG LAN-SHAN;HSIEH CHIH-YUAN |
分类号 |
H02M7/10;G05F1/10 |
主分类号 |
H02M7/10 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|