1.General overview of various Power FactorCorrection techniques and typical application issuesis first presented. Emphasis is then focused on acontrolled on-time, non-resonant zero currentswitched (ZCS) technique. The control algorithm,design equations, required circuitry and generalperformance will be detailed.
Download
2.High Power Factor Preregulator Optimization
Design of a high power factor active preregula-
tor is optimized to achieve less than 3% har-
monic distortion and power factor better than
.995 without a sample/hold. The circuit operates
over a line voltage range exceeding 3: 1 and at
loads approaching zero. Under these wide-rang-
ing conditions, the loop gain is constant and the
dynamic response to large transient changes in
line and load is excellent
Download
