Error amplifier and DC-DC converter and the method thereof

Details Error amplifier and DC-DC converter and the method thereof Error amplifier and DC-DC converter and the method thereof

2005-06-28

2005-06-28

Mottola, Steven J. (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including particular power supply circuitry

C330S252000

Reexamination Certificate

active

06911867

ABSTRACT:
The DC-DC converter of the present invention sets the soft start function in the error amplifier. With soft start added, the error amplifier's output voltage will follow the slowly ascending soft start voltage when the DC-DC converter is enabled. Then the soft start looses control over the error amplifier when the soft start voltage exceeds the steady state value of the error amplifier's output voltage. And meanwhile, the amplifier's input will take over the control. By doing so, the present invention significantly eradicates or reduces jitters caused by the output voltage of the error amplifier and the DC-DC converter.

REFERENCES:
patent: 4598351 (1986-07-01), Fair et al.
patent: 6147477 (2000-11-01), Saeki et al.
patent: 2004/0022078 (2004-02-01), Shieh
patent: 503609 (1989-09-01), None

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