Infineon Technologies ICE1PCS02GXUMA1

Overview

ICE1PCS02GXUMA1 from Infineon Technologies is an 8-pin standalone Continuous Conduction Mode (CCM) Power Factor Correction (PFC) controller IC for boost-topology AC-DC front-ends. It delivers fixed 65 kHz switching frequency, average current control, input brown-out detection (VINS < 0.8 V shutdown / > 1.5 V restart), 5 V ±2% internal reference, and 1.5 A gate drive capability. It targets industrial and consumer SMPS requiring Class D IEC 61000-3-2 compliance across 85–265 VAC input.

For engineers reviewing the ICE1PCS02GXUMA1 datasheet, ICE1PCS02GXUMA1 pinout, ICE1PCS02GXUMA1 application, or ICE1PCS02GXUMA1 equivalent, key selection criteria include brown-out hysteresis behavior, external voltage/current loop compensation flexibility, startup current sourcing (30 µA typ), max duty cycle (97% typ), and PG-DSO-8 thermal performance in high-density PFC stages.

Technical Context

The ICE1PCS02GXUMA1 implements a cascaded dual-loop architecture: an inner average current loop (sensed via ISENSE, compensated at ICOMP) shapes sinusoidal line current, while an outer voltage loop (sensed at VSENSE, compensated at VCOMP) regulates 300–400 V DC bus. It operates exclusively in CCM under normal load, entering DCM only at light loads-still meeting IEC 61000-3-2 Class D harmonic limits.

Startup is controlled by OTA1 sourcing 30 µA into VCOMP until VOUT reaches 95% of regulation, enabling linear current ramp-up and reduced inrush stress. Protection includes cycle-by-cycle peak current limiting, soft overcurrent control, open-loop detection, over-voltage protection, and VCC UVLO (11.2 V turn-on / 10.2 V shutdown).

Key Specifications

Pinout & Package

ICE1PCS02GXUMA1 is housed in a RoHS-compliant PG-DSO-8 (SOIC-8) package with exposed pad for enhanced thermal dissipation in surface-mount PFC stages.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ICE1PCS01G, ICE1PCS02GXUMA1 adds brown-out resilience and faster startup without changing footprint or loop compensation design; versus UCC28070, it trades channel count and programmability for lower BOM count and simpler layout in cost-sensitive single-stage PFC.

Availability

ICE1PCS02GXUMA1 is available at Aetrix Electronics and suitable for industrial SMPS, LED driver front-ends, and consumer audio power supplies requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for ICE1PCS02GXUMA1 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.

ICE1PCS02GXUMA1 belongs to Infineon's CCM-PFC controller product line, designed specifically for cost-effective, high-reliability single-channel active PFC in universal-input AC-DC converters targeting Class D compliance.

FAQ

What is the function of the VINS pin and how does it interact with brown-out protection?

The VINS pin senses a scaled version of the rectified AC input voltage. When VINS falls below 0.8 V, the IC shuts down to protect downstream circuitry from undervoltage operation; it restarts only when VINS exceeds 1.5 V, providing 0.7 V hysteresis to prevent oscillation during marginal line conditions. This eliminates need for external brown-out supervisors.

Can ICE1PCS02GXUMA1 operate in discontinuous conduction mode (DCM)?

The IC is optimized for continuous conduction mode (CCM) operation across full load range. Under very light loads, the boost inductor may force the converter into DCM due to reduced current ripple, but this is incidental-not a designed operating mode-and still satisfies IEC 61000-3-2 Class D harmonic limits without compromising regulation.

How is the 65 kHz switching frequency trimmed and what is its tolerance?

The 65 kHz oscillator frequency is laser-trimmed during wafer test and fixed internally. Its tolerance is ±7.7% over temperature and process variation, as specified in the datasheet (V1.2, Feb 2007). No external components affect this frequency, simplifying EMI filter design and reducing bill-of-materials.

What is the purpose of the ICOMP and VCOMP pins, and why are they separate?

ICOMP and VCOMP provide independent compensation nodes for the inner current loop and outer voltage loop, respectively. Separating them allows designers to optimize each loop's phase margin and bandwidth independently-critical for stable operation across wide line/load ranges and varying output capacitance values in real-world PFC applications.