CONTROLLER FOR DC TO DC CONVERTER

Title:

CONTROLLER FOR DC TO DC CONVERTER

Document Type and Number:

WIPO Patent Application WO2004045052

Kind Code:

A3

Abstract:

A controller (200) for a DC-to-DC converter is configured to provide a PWM signal in a first state during a first time interval based on an input voltage less a voltage level representative of an output voltage of the DC-to-DC converter. The controller (200) may provide the PWM signal in the first state based on the time it takes to charge an energy storage element (202) of the controller (200) to a predetermined level. The controller (200) may also provide an estimator of a zero inductor current level in an associated inductor when the energy storage element (202) is completely discharged. The controller may also be a digital controller (200) that counts time pulse to provide the PWM signal. A DC-to-DC converter including such a controller (200) and associated methods are also provided.

Inventors:

LIPCSEI LASZLO (US)
POPESCU SERBAN-MIHAI (US)

Application Number:

PCT/US2003/036095

Publication Date:

December 29, 2005

Filing Date:

November 12, 2003

Export Citation:

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Assignee:

O2MICRO INC (US)
LIPCSEI LASZLO (US)
POPESCU SERBAN-MIHAI (US)

International Classes:

H02M1/12; H02M3/157; H02M3/158; (IPC1-7): H02M1/12

Foreign References:

US6396250B1	2002-05-28
US5982160A	1999-11-09
US6157182A	2000-12-05

Other References: