Power Factor Correction

ICE2PCS02GXUMA1

ICE2PCS02GXUMA1 - CCM PFC Controller 65kHz PG-DSO-8 | Infineon

The Infineon ICE2PCS02GXUMA1 is a 2nd-generation Continuous Conduction Mode (CCM) Power Factor Correction (PFC) controller in an 8-pin PG-DSO package, switching at a typical frequency of 65 kHz and built on Infineon's BiCMOS process technology. The device integrates a trimmed internal reference of 3V, a transconductance error amplifier for the voltage loop, and average-current-mode control for the boost inductor, achieving near-unity power factor across universal AC line inputs. According to the Infineon datasheet, the controller supports programmable switching frequency up to 250 kHz and a maximum duty cycle of 95%. A PFC (Power Factor Correction) controller is a critical analog IC used in AC-DC power supplies to shape the input current waveform so it tracks the AC line voltage. By switching a boost converter at high frequency and modulating the duty cycle to follow the rectified mains, the controller forces the input current to look sinusoidal and in phase with the voltage. This reduces harmonic distortion (THD), helps the end product meet regulatory standards such as IEC 61000-3-2, and improves the real power drawn from the AC mains. PFC sits in the power management IC hierarchy under AC-DC controllers, alongside flyback controllers and LLC resonant controllers. Key features of the ICE2PCS02GXUMA1 include a wide supply range for VCC, internal soft-start, undervoltage lockout (UVLO), over-voltage protection on the feedback pin, and open-loop detection. Its average current control architecture rejects line-frequency disturbances, providing stable operation in CCM under heavy loads. Compared to the earlier ICE1PCS01/02 generation, the trimmed 3V reference tightens output regulation accuracy, and the BiCMOS design reduces quiescent current draw. Typical applications include 80 PLUS-compliant PC silver/gold ATX power supplies, server SMPS modules, industrial SMPS with universal mains input (90-264 VAC), flat-panel TV power boards, and LED driver front-end stages requiring low THD. The 8-pin PG-DSO package with exposed pad offers excellent thermal dissipation in a small PCB area, and the wide frequency range enables optimization between magnetic size and switching loss. This page synthesizes distributor pricing, drop-in alternatives, and design notes not found in the manufacturer datasheet.