发明名称 |
PULSE WIDTH MODULATION CONTROLLER, CIRCUIT AND METHOD THEREOF WITH SHORT CIRCUIT PROTECTION |
摘要 |
A PWM comprises a voltage transformation module, a voltage-sensing module and a timer. The voltage transformation module is configured to transform an input voltage into an output voltage. The voltage-sensing module is coupled to the voltage transformation module and configured to detect a voltage of a first terminal, wherein the voltage of the first terminal is proportional to the output voltage. The timer is configured to measure the time duration for which the voltage of the first terminal is lower than a reference voltage, wherein the timer initiates a short circuit signal when the time duration is greater than a predetermined value.
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申请公布号 |
US2010026266(A1) |
申请公布日期 |
2010.02.04 |
申请号 |
US20080275379 |
申请日期 |
2008.11.21 |
申请人 |
ADVANCED ANALOG TECHNOLOGY, INC. |
发明人 |
YU CHIEN PENG;WANG YI CHENG;YAN YE HSUAN;HSU CHIH CHI |
分类号 |
G05F1/569 |
主分类号 |
G05F1/569 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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