Infineon Technologies ICE3PCS01GXUMA1

Overview

ICE3PCS01GXUMA1 from Infineon Technologies is a 14-pin Continuous Conduction Mode (CCM) Power Factor Correction (PFC) controller for boost-topology AC-DC front-ends, operating from 85–265 VAC input, delivering >90% system efficiency, featuring integrated digital voltage loop compensation, programmable 21–100 kHz switching frequency, and dual over-voltage protection-used in industrial SMPS and LED driver power supplies.

For engineers reviewing the ICE3PCS01GXUMA1 datasheet, ICE3PCS01GXUMA1 pinout, ICE3PCS01GXUMA1 application, or ICE3PCS01GXUMA1 equivalent, key selection criteria include CCM average-current control architecture, VB_OK bulk-voltage-good signaling for PWM IC enablement, brownout threshold accuracy (1.25 V at BOP), and PG-DSO-14 thermal performance in high-density PFC stages.

Technical Context

The ICE3PCS01GXUMA1 implements a cascaded dual-loop control: an inner average-current loop using ISENSE feedback with external RCS current limiting and ICOMP compensation, and an outer digitally integrated voltage loop regulating VSENSE-derived bulk voltage via VBTHL_EN–controlled enable logic. It supports soft-start with linear current ramp until 95% rated bulk voltage is reached.

Its protection architecture includes three independent thresholds: BOP (1.25 V) for line brownout detection, OVP (via resistive divider on VSENSE) as first-stage overvoltage cutoff, and second OVP (OVP2) with separate sensing path; plus open-loop protection triggered when VSENSE falls below 0.5 V, and peak current limiting tied to ISENSE polarity and amplitude.

Key Specifications

Pinout & Package

ICE3PCS01GXUMA1 is housed in a thermally enhanced PG-DSO-14 (14-pin exposed-pad SOIC) package, optimized for high-power density PFC stages with low thermal resistance to PCB copper.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar CCM PFC controller applications.

Compared with UCC28070DR and ICE2PCS01G, ICE3PCS01GXUMA1 delivers higher integration (digital voltage loop, VB_OK, dual OVP), broader frequency range, and active efficiency optimization via Boost Follower-making it optimal for new high-density, high-reliability PFC designs.

Availability

ICE3PCS01GXUMA1 is available at Aetrix Electronics and suitable for industrial switch-mode power supplies, LED driver front-end modules, server PSU front-end stages, and medical AC-DC adapters requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for ICE3PCS01GXUMA1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive, and industrial control ICs, with leadership in silicon carbide and high-voltage analog solutions.

The ICE3PCS01GXUMA1 belongs to Infineon's CCM-PFC controller product line, designed specifically for high-efficiency, high-reliability boost-mode active PFC stages in universal-input AC-DC converters targeting industrial, medical, and lighting applications.

FAQ

What is the minimum recommended value for the FREQ pin resistor (RFREQ) to achieve stable 100 kHz operation?

The datasheet specifies that a 22 kΩ resistor at the FREQ pin yields approximately 100 kHz switching frequency. This value assumes typical process and temperature conditions; layout parasitics and VCC stability must be verified. RFREQ must be placed close to the pin with short traces to minimize noise coupling, and the FREQ node should remain free of capacitive loading beyond the internal oscillator capacitance.

How does the ICE3PCS01GXUMA1 handle transition from CCM to DCM under light load, and does it affect THD compliance?

The IC operates in CCM across most load ranges but may naturally enter DCM at very light loads depending on boost inductor value and line voltage. This transition is uncontrolled but still meets IEC 61000-3-2 Class D limits due to inherent current shaping in the average-current control architecture-even in DCM, harmonic distortion remains within specification without requiring mode-switching logic.

Can the VB_OK signal be used to control an external relay without additional buffering?

Yes-VB_OK is a 5 V open-drain output rated for 5 mA sink current. It can directly drive small-signal relays (e.g., 5 V coil, <3 mA hold current) or interface with optocouplers. For higher-current relays, a discrete NPN transistor or logic-level MOSFET buffer is required. The signal asserts only after bulk voltage exceeds 95% of nominal and releases only when VSENSE falls below VBTHL_EN threshold.

Is external current loop compensation mandatory, and what happens if ICOMP is left unconnected?

Yes-ICOMP must be connected to an external RC network (e.g., 4.7 nF + 10 kΩ) to stabilize the inner current loop. Leaving ICOMP floating causes instability, oscillation, or erratic gate drive due to uncontrolled loop gain. The capacitor integrates OTA6 output to generate the average current command; missing compensation leads to poor transient response and potential overcurrent faults during load steps.