Adaptive dead-time controller

Details Adaptive dead-time controller Adaptive dead-time controller

2006-06-06

2006-06-06

Vu, Bao Q. (Department: 2838)

Electricity: power supply or regulation systems

Output level responsive

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

C323S282000

Reexamination Certificate

active

07057380

ABSTRACT:
An adaptive dead-time controller is provided to improve a conversion efficiency of a power converter at a low
o load condition. The adaptive dead-time controller has a reference voltage generator, an error amplifier, a comparator, an oscillator, an adaptive dead-time generator and a flip-flop. The adaptive dead-time controller outputs a gate pulse according to an output voltage and an oscillation. When power converter is at a low
o load condition, the adaptive dead-time generator delays a rising edge of an oscillation signal by a dead-time from a rising edge of a clock signal, so the frequency of the gate pulse and the power consumption of the power converter are reduced.

REFERENCES:
patent: 4686428 (1987-08-01), Kuhnel et al.
patent: 6744649 (2004-06-01), Yang et al.
patent: 6954056 (2005-10-01), Hoshino et al.

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