Patent ID: 7403400
Filing Date: 2008-07-22
Classification: G05F,H02M,Y02B

Abstract:
1. A power factor correcting power supply comprising: a first boost converter that includes a first boost sub-circuit coupled with a second boost sub-circuit; a second boost converter coupled in series with the first boost converter, where the second boost converter includes a third boost sub-circuit coupled with a fourth boost sub-circuit, and the first and second boost converters are configured to receive an input voltage and supply a boost voltage that is greater in magnitude than a peak magnitude of the input voltage, where the boost voltage is divided by a factor of at least four with the first, second, third, fourth sub-circuits; and a power factor correction controller coupled with the first and second boost converters, where the power factor correction controller is configured to control the first and second boost converters with pulse width modulation and series interleave operation with the factor of at least four as a function of the boost voltage.