The new units are designed to deliver 98% full-load efficiency for applications drawing between 75 and 400 watts

The HiperPFS-4 power factor correction (PFC) controller IC features an integrated Qspeed low reverse recovery charge (Qrr) boost diode and draws as little as 36 mW during no load conditions.

Members of the HiperPFS-4 IC combine the boost diode, the continuous conduction mode (CCM) PFC control circuitry and a 600 volt MOSFET in one highly intergrated package This high voltage rating makes it possible for the devices to satisfy the 80% de-rating requirement when delivering a 385 VDC constant-voltage bus. Additionally, these PFC ICs enable a power factor of better than 0.95 at loads above 20%

As noted by Power Integrations’ product marketing manager Edward Ong: “Designs using HiperPFS-4 ICs show very high efficiency across the load range with as little as 36 mW of no-load power consumption at 230 VAC. The HiperPFS-4 family is ideal for PCs and TVs, and also for battery chargers, power tools, industrial power supplies and LED lighting. The active devices incorporated into HiperPFS-4 ICs are rated to 600 V, which eases compliance with frequently requested 80% de-rating specifications.”