Abstract
This paper presents a new single-stage
ac-dc converter to supply sustain power for the plasma
display panel (PDP). A new bridgeless single-stage ac-dc
converter is proposed for a high efficiency sustain
power supply. The proposed converter integrates the
power factor correction (PFC) circuit with the isolated
dc-dc converter. It provides the sustain voltage from
the ac line without using any full-bridge diode
rectifier. Conduction losses are lowered by eliminating
the full-bridge diode rectifier. Switching losses are
reduced by zero-voltage switching (ZVS) of the power
switches and zero-current switching (ZCS) of the power
diode. By simplifying the circuit structure and reducing
power losses, the cost and power consumption of the PDP
is improved. The proposed converter is theoretically
analyzed in detail. Experimental results based on a 180
W (200 V/0.9 A) prototype circuit are discussed to
verify the performance of the proposed converter for
37-in PDP displays.
© 2011 IEEE
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