Switching power supply circuit

Details Switching power supply circuit Switching power supply circuit

2007-06-05

2009-06-09

Berhane, Adolf (Department: 2838)

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

C323S285000

Reexamination Certificate

active

07545129

ABSTRACT:
A switching power supply circuit comprises: current detection means for detecting a current flowing through an inductor; current holding means for holding the current flowing through the inductor over a past predetermined period; and current superposition means for adding to an output of an error amplifier a current superposition signal which makes an adjustment, based on a present current information signal as an output signal of the current detection means, such that the ON-period of a switching signal of a PWM comparator is shortened, and also makes an adjustment, based on a past current information signal as an output signal of the current holding means, such that the ON-period of the switching signal of the PWM comparator is lengthened.

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patent: 7321222 (2008-01-01), Hojo
patent: 2005-033936 (2005-02-01), None

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