H - Electricity – 03 – K
Patent
H - Electricity
03
K
H03K 17/14 (2006.01) H02M 3/156 (2006.01) H02M 1/00 (2006.01)
Patent
CA 2280366
For use with a semiconductor switch that exhibits a temperature-dependent electrical characteristic and a current sense circuit that employs the characteristic of the switch to derive a switch current signal, a temperature compensation circuit, method of operation thereof and controller employing the same. In one embodiment, the circuit includes: (1) an electrical component, locatable in thermal communication with the switch and having a temperature-dependent electrical characteristic that bears an inverse relationship to the characteristic of the switch, that generates an intermediate signal based on an actual temperature of the switch and (2) a signal conditioning circuit, coupled to the electrical component, that scales the intermediate signal to yield a compensation signal that counteracts temperature-dependent variations in the switch current signal.
Kirby Eades Gale Baker
Lucent Technologies Inc.
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