Patent Number: 8,717,791

Title: Bridgeless boost PFC circuits and systems

Abstract: Bridgeless boost PFC circuits and systems providing an improved method of current sensing using two current sensing resistors is envisaged. Analog switches are provided to select one of the two current sensing resistors based on the polarity of the AC line. An amplifier is provided to eliminate use of resistors with large values, thus resulting in lower power loss and efficient systems.

Inventors: Wildash; Kevin D. (Adelaide, AU)

Assignee: ASTEC International Limited

International Classification: H02M 7/04 (20060101); H02M 7/68 (20060101); H02M 5/42 (20060101)

Expiration Date: 5/06/12018