CCM PFC controller for offline power stages
The Infineon ICE3PCS01GXUMA1 is a Continuous Conduction Mode (CCM) power-factor-correction controller in a 14-SOIC package. It targets boost-type PFC stages in switch-mode power supplies, lighting ballasts, and industrial AC-DC converters where a clean sinusoidal input current and tight output regulation are needed. The CCM architecture keeps the inductor current always above zero, which reduces peak current stress on the MOSFET and rectifier compared to boundary or discontinuous mode, at the cost of a larger inductor and potential reverse-recovery losses in the boost diode.
The switching frequency is adjustable from 21 kHz up to 100 kHz via an external resistor on the FREQ pin. That span covers the usual trade-off: lower frequencies (around 30–50 kHz) keep switching losses down and simplify the gate-drive layout, while pushing toward 100 kHz shrinks the magnetic components but demands faster diodes and a tighter PCB layout to manage ringing. The supply range of 11 V to 25 V lets it run directly from a 12 V or 15 V auxiliary rail — no extra linear regulator needed in most designs. The 380 µA startup current is low enough that you can feed the VCC pin through a dropping resistor from the bulk capacitor during startup, then let the auxiliary winding take over once the PFC stage is running.
Package and temperature grade
Supplied in a 14-SOIC narrow-body package (3.90 mm width, PG-DSO-14), surface-mount only.