PFS704EG (POWER INTEGRATIONS)

The PFS704EG is a high power Factor Controller with integrated high-voltage MOSFET. It provides near unity input power factor. The HiperPFS device eliminates the PFC converter's need for external current sense resistors, the power loss associated with those components and leverages an innovative control technique that adjusts the switching frequency over output load, input line voltage and even input line cycle. This control technique is designed to maximize efficiency over the entire load range of the converter, particularly at light loads. Additionally, this control technique significantly minimizes the EMI filtering requirements due to its wide-bandwidth spread spectrum effect. HiperPFS includes Power Integrations' standard set of comprehensive protection features, such as integrated soft-start, UV, OV, brown-in/out and hysteretic thermal shutdown. HiperPFS also provides cycle-by-cycle current limit for the power MOSFET, power limiting of the output for overload protection.