| 摘要 |
It is proposed a system for measuring an output current Î OUT of a DC-to-DC converter, the DC-to-DC converter comprising a transistor power stage. The system comprises: - a voltage measuring circuit (30), connected to the output of the power stage (10) of the DC-to-DC converter (1), for measuring an average voltage drop V AVG on impedances R DS ( p, N ) of the transistors of the power stage; - an impedance R composite (32), connected to an output of the voltage measuring circuit (30) providing a current /' OUT , the impedance R composite (32) reproducing the impedances R DS ( p, N ) of the transistors of the power stage and being traversed /' OUT OUT AVG / R Composite = /' OUT / k G. k |
