| 摘要 |
<p>PURPOSE: A sample and hold feedback control circuit and a method thereof are provided to use a structure and a method for using PWM in systems which are operated by a switch operator and do not take additional error sources, thereby saving costs. CONSTITUTION: An operational amplifier(102) comprises an inverted input terminal, a non-inverted input terminal, an output terminal, and an enable terminal. The output terminal is connected to the input terminal of a switching operator(112). The non-inverted input terminal receives a potential source. The non-inverted input terminal is connected to a terminal of a switch(104) and a terminal of an energy storage element(110). The switch includes a terminal coupled with a current source/sink(108). The switch includes a control terminal connected to the input terminal of a PWM delay element(118).</p> |
