| 摘要 |
<P>PROBLEM TO BE SOLVED: To propose a mechanism for sensing input voltage and output voltage of a power conversion circuit via the negative end of an input voltage source, to provide desirable performance for the power conversion circuit. <P>SOLUTION: A high side controller includes: a first switch having a control end and two channel ends, the control end being coupled to a gate signal, and one of the two channel ends being coupled to a voltage signal, wherein the voltage signal is proportional to a negative version of the input voltage when the gate signal is active; an inverting amplification circuit having an input end coupled to the other one of the two channel ends, and an output end for providing a first processed voltage; and a first sample and hold circuit having a control input end coupled to the gate signal, an input end coupled to the first processed voltage, and an output end for providing a first sample voltage. <P>COPYRIGHT: (C)2012,JPO&INPIT |
