Switching DC-DC converter and oscillator

Details Switching DC-DC converter and oscillator Switching DC-DC converter and oscillator

2008-09-09

2011-10-18

Behm, Harry (Department: 2838)

Electricity: power supply or regulation systems

Output level responsive

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

C363S050000

Reexamination Certificate

active

08040120

ABSTRACT:
A switching DC-DC converter includes: an output voltage detecting unit configured to detect a DC output voltage; an error amplifying unit configured to compare the detected output voltage and a reference voltage and configured to supply an amplified error signal between the detected output voltage and the reference voltage to the pulse width modulating unit; and a single oscillating unit connected to an output of the output voltage detecting unit and an output of the error amplifying unit and operable on a first oscillating mode and a second oscillation mode. The oscillating unit on the first oscillating mode controls a switching frequency of the power switch based on the detected output voltage. The oscillating unit on the second oscillating mode controls the switching frequency of the power switch based on the amplified error signal.

REFERENCES:
patent: 2005/0083024 (2005-04-01), Harris et al.
patent: 2006/0013021 (2006-01-01), Aso
patent: 9098571 (1997-04-01), None
patent: 10229674 (1998-08-01), None

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