Infineon Technologies ICE2PCS02GXUMA1

Overview

ICE2PCS02GXUMA1 from Infineon Technologies is a standalone continuous conduction mode (CCM) power factor correction (PFC) controller in PG-DIP-8 package, featuring average current control, fixed 65 kHz switching frequency (±5% at 25°C), trimmed 3 V internal reference voltage (±2%), and integrated input brown-out protection with 0.71 V shutdown / 1.5 V turn-on thresholds. It drives external MOSFETs in boost topology for universal AC input (85–265 VAC) applications meeting IEC 61000-3-2 Class D.

For engineers reviewing the ICE2PCS02GXUMA1 datasheet, ICE2PCS02GXUMA1 pinout, ICE2PCS02GXUMA1 application, or ICE2PCS02GXUMA1 equivalent, key selection considerations include its CCM average-current control architecture, external voltage/current loop compensation flexibility, soft-start behavior during VOUT ramp-up, gate drive capability (1.5 A source / 2.0 A sink), and brown-out detection via direct VINS sensing - all critical for reliable PFC stage design in industrial SMPS and LED drivers.

Technical Context

The ICE2PCS02GXUMA1 implements a cascaded dual-loop control: an inner current loop using average current sensing via ISENSE (with nonlinear gain and cycle-by-cycle peak limiting) and an outer voltage loop regulating VOUT via VSENSE feedback against a trimmed 3 V reference. Startup employs controlled VCOMP ramping through OTA1 to limit inrush, while UVLO (11.0 V off / 11.8 V on) and IBOP (VINS < 0.71 V → standby) enforce safe power sequencing.

Protection logic integrates hysteresis-based brown-out detection, soft overcurrent control (SOC), open-loop protection (OLP), output over-voltage protection (OVP), and cycle-by-cycle peak current limiting. The GATE driver delivers rail-to-rail swing clamped at 15.0 V with 1.5 A/2.0 A peak sourcing/sinking, optimized for driving high-side MOSFETs in boost converters without external buffers.

Key Specifications

Pinout & Package

ICE2PCS02GXUMA1 is housed in PG-DIP-8 package (8-pin dual in-line plastic), with creepage/clearance compliant for reinforced insulation in AC-DC power supplies up to 305 VAC RMS.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ICE2PCS01GXUMA1, ICE2PCS02GXUMA1 adds brown-out resilience without changing footprint or control loop design; versus UCC28070DWR, it offers simpler single-channel implementation with lower component count and cost for sub-300 W universal-input PFC stages.

Availability

ICE2PCS02GXUMA1 is available at Aetrix Electronics and suitable for industrial AC-DC power supplies, LED street lighting drivers, and server PSU front-ends requiring stable component supply, long-term lifecycle support, and compliance with IEC 61000-3-2 Class D.

Supply support for ICE2PCS02GXUMA1 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.

ICE2PCS02GXUMA1 belongs to Infineon's CCM-PFC controller product line, designed specifically for cost-sensitive, high-reliability active PFC stages in universal-input offline power supplies targeting Class D compliance and robust brown-out handling.

FAQ

What is the recommended external auxiliary supply for VCC?

The VCC pin requires an external auxiliary supply between 11 V and 25 V, typically derived from a winding on the main transformer or a dedicated flyback. A 15 V supply is common; ensure current capability exceeds 10 mA during operation and that UVLO hysteresis (11.0 V off / 11.8 V on) is respected during startup. No internal clamp exists - overvoltage must be prevented externally.

How does the ICE2PCS02GXUMA1 handle light-load conditions?

Under light load, the controller transitions from continuous conduction mode (CCM) into discontinuous conduction mode (DCM) depending on choke inductance and line voltage. This preserves Class D compliance per IEC 61000-3-2 while reducing switching losses. The average current control remains active, and protections like OVP and OLP remain fully functional regardless of conduction mode.

Can the switching frequency be adjusted externally?

No - the ICE2PCS02GXUMA1 features a trimmed internal oscillator fixed at 65 kHz ±5% at 25°C. Frequency cannot be modified via external components or pins. This simplifies EMI filter design and ensures consistent timing behavior across temperature and unit-to-unit variation, but precludes frequency dithering or synchronization.

What is the purpose of the series resistor (R2) recommended on the ISENSE pin?

A ~220 Ω series resistor between the external sense resistor and ISENSE (Pin 3) limits inrush current into the IC during startup, when high negative voltage spikes occur across the sense resistor. Without R2, currents could exceed the absolute maximum rating of ±10 mA at ISENSE, risking latch-up or permanent damage to the current-sense amplifier input stage.