Switching control circuit and self-excited DC-DC converter

Details Switching control circuit and self-excited DC-DC converter Switching control circuit and self-excited DC-DC converter

2011-05-10

2011-05-10

Jackson, Stephen W (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific current responsive fault sensor

C323S287000

Reexamination Certificate

active

07940507

ABSTRACT:
The switching control circuit comprises a switching control signal generation circuit that detects a change in ripples of the output voltage and-generates a switching control signal for the on/off control of the switching element to make the output voltage follow the target level; an overcurrent state detection circuit that generates a state signal indicating whether the output current is in an overcurrent state where the output current is equal to or greater than a predetermined current; and a delay circuit that delays the state signal for a same predetermined delay time at both of the times when the output current exceeds the predetermined current and when the output current falls below the predetermined current.

REFERENCES:
patent: 5773965 (1998-06-01), Hayashi
patent: 5994885 (1999-11-01), Wilcox
patent: 07-245874 (1995-09-01), None
patent: 2003-070244 (2003-03-01), None
patent: 2005-110369 (2005-04-01), None
Japan Patent Office, Notification of Reasons for Rejection for Application No. 2005-185340, Mail Date Nov. 2, 2010.

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