275w_pfc_front_end_using_hiperpfs-4

Summary and Features ? Highly integrated, low component count, low-cost PFC ? Ultra-low reverse recovery loss diode (QspeedTM) ? Power Integrations eSIP-16 low-profile controller package ? “Cool-Pad” package reduces IC mounting hardware ? Eliminates insulating pad/heat-spreader ? EN61000-3-2 Class-D compliant ? High PFC efficiency enables up to 80+ Platinum PC Main design ? Enhanced light load power factor (PF) ? PF >0.9 at 20% load and 230 VAC, 50 Hz input ? PF >0.95 at 50% load ? Frequency sliding maintains high efficiency across load range ? >95% from 10 to 100% load (115 VAC and 230 VAC input) ? Feed forward line sense gain – maintains relatively constant loop gain over entire operating voltage range ? Excellent transient load response ? Frequency adjusted over input line voltage and load ? Spread-spectrum across >60 kHz window simplifies EMI filtering requirements ? Integrated Qspeed switching diode reduces component count and simplifies assembly

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