Rabin & Berdo, P.C.
Switching power supply device
A switching power supply device that includes a feedback terminal to which a feedback signal according to a load state is input, and a comparator which compares a terminal voltage of the feedback terminal with a reference voltage and determines whether the load state is a normal load state or a light load state. The switching power supply device also includes pull-up resistors which are connected to the feedback terminal, a switch element which switches resistance values of the pull-up resistors according to the change of the load state, and a switch element which switches the resistance values of the pull-up resistors according to whether the input voltage is high or low.
Fuji Electric Co., Ltd.
Y H H H
Y02B H02M H02M H02M
additional inventional additional additional
Masayuki Jian
Yamadaya Chen