| 摘要 |
<p>To provide a small power semiconductor device current detector circuit and detection method with low loss by detecting current using the sensing function of a power semiconductor device. An already known current is caused to flow through a main region of the power semiconductor device, the current is detected by a current detector unit connected to a sense terminal of the power semiconductor device, a deviation in characteristics between the main region and a sensing region is detected by a variable voltage source circuit based on the detected current, and an offset amount and gain amount in an output regulator are regulated in such a way that the characteristics of the two coincide. In this case, it is also possible to supply the offset amount and gain amount to be regulated to the output regulator, serially or in parallel, from a CPU provided externally.</p> |
