Infineon Technologies ICE2PCS03GXT

Overview

ICE2PCS03GXT from Infineon Technologies is a standalone Continuous Conduction Mode (CCM) Power Factor Correction (PFC) controller IC designed for boost-topology AC-DC front-ends. It delivers fixed 100 kHz switching frequency, average current mode control, input brown-out protection (VINS threshold: 0.71 V turn-off / 1.5 V turn-on), and 3 V ±2% internal reference voltage. Used in universal-input (85–265 VAC) SMPS for Class D IEC 61000-3-2 compliance.

For engineers reviewing the ICE2PCS03GXT datasheet, ICE2PCS03GXT pinout, ICE2PCS03GXT application, or ICE2PCS03GXT equivalent, this page provides verified technical context, validated pin functions, real-world PFC design constraints (e.g., external compensation at VCOMP/ICOMP, gate drive capability of 1.5 A source / 2.0 A sink), and confirmed alternative controllers with documented functional alignment.

Technical Context

The ICE2PCS03GXT implements cascaded dual-loop control: an inner average current loop (sensed via ISENSE, compensated externally at ICOMP) and an outer voltage loop (feedback via VSENSE to 3 V reference, compensated at VCOMP). It operates exclusively in CCM under normal load, entering DCM only at light loads - maintaining IEC 61000-3-2 Class D compliance across full input range.

Its protection architecture includes cycle-by-cycle peak current limiting (PCL), soft overcurrent control (SOC), open-loop detection (OLP), output overvoltage protection (OVP), and VCC UVLO (11.0 V off / 11.8 V on). Startup employs linear VCOMP ramping with window-detect level shift to ensure controlled bus voltage rise without overshoot.

Key Specifications

Pinout & Package

ICE2PCS03GXT is housed in PG-DSO-8 (SOIC-8) package with standard 150 mil width, gull-wing leads, and exposed thermal pad (non-electrical). Pin 1 marked by notch or dot; pin numbering follows counter-clockwise convention from top-left corner.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ICE2PCS03GXT, ICE2PCS02GXT omits brown-out protection but retains identical footprint and control loop structure, whereas UCC28070PW offers scalable multi-phase capability at the cost of increased component count and layout complexity - making ICE2PCS03GXT optimal for cost-sensitive, single-phase 100–300 W universal-input PFC stages.

Availability

ICE2PCS03GXT is available at Aetrix Electronics and suitable for server power supplies, industrial motor drives, and LED street lighting drivers requiring stable component supply, long-term lifecycle support, and guaranteed traceability.

Supply support for ICE2PCS03GXT 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 AG is a German semiconductor manufacturer specializing in power management, automotive, and industrial control ICs, with global R&D and manufacturing infrastructure.

ICE2PCS03GXT belongs to Infineon's CCM-PFC controller product line, engineered specifically for cost-effective, high-reliability active power factor correction in universal-input AC-DC converters up to 300 W.

FAQ

What is the purpose of the VINS pin, and how is it used in circuit design?

The VINS pin senses a scaled version of the rectified AC input voltage to detect brown-out conditions. A resistive divider from the bulk capacitor to VINS sets the trip point: IC shuts down when VINS falls below 0.71 V and resumes when it rises above 1.5 V. Designers must select divider resistors to ensure proper scaling across 85–265 VAC while respecting the pin's 0.5 mA max input current rating and noise immunity requirements.

Can ICE2PCS03GXT operate without an external auxiliary supply for VCC?

No - ICE2PCS03GXT requires an external auxiliary supply connected to VCC, rated 11–26 V. It has no high-voltage startup circuitry or integrated bias winding controller. The auxiliary supply must be active before the IC enables gate drive; typical sources include a dedicated flyback winding or a small capacitive-dropper + LDO for low-power standby states.

How does the ICOMP pin differ from VCOMP in loop compensation?

ICOMP compensates the inner current loop, stabilizing the average current regulation path that shapes input current waveform; it connects to an RC network that filters and integrates the ISENSE signal. VCOMP compensates the outer voltage loop, setting the bandwidth for output bus regulation; its network determines how quickly the controller responds to load steps while maintaining stability against output capacitance and ESR variations.

Is ICE2PCS03GXT compliant with IEC 61000-3-2 Class D, and what design conditions ensure compliance?

Yes - ICE2PCS03GXT meets IEC 61000-3-2 Class D requirements when implemented in a properly designed boost PFC stage with appropriate inductor value, output capacitor, and compensation. Compliance depends on operating in CCM across ≥80% of load range; light-load DCM operation is permitted per standard and does not invalidate Class D conformance, provided harmonics remain within limits.