Rabin & Berdo, P.C.
Semiconductor device and switching power supply device
A semiconductor device including a first filter, a second filter, a first comparison circuit, a second comparison circuit and an AND circuit. The first filter generates a first output signal by performing first filtering processing on an input signal of the semiconductor device, the first filter having a first time constant. The second filter generates a second output signal by performing second filtering processing on the first output signal, the second filter having a second time constant different from the first time constant. The first comparison circuit compares the first output signal with a first threshold voltage, to thereby output a first level signal. The second comparison circuit compares the second output signal with a second threshold voltage, to thereby output a second level signal. The AND circuit performs an AND operation on the first and second level signals.
FUJI ELECTRIC CO., LTD.
H H H H H H H H H H Y
H02M H02M H02M H02M H02M H02M H02M H02M H02M H02M Y02B
additional additional additional additional inventional additional additional additional inventional additional additional
Jian
Chen