Infineon Technologies ICE1PCS02G

Overview

ICE1PCS02G from Infineon Technologies is an 8-pin standalone CCM Power Factor Correction (PFC) controller IC for boost-topology AC-DC front-ends, featuring 65 kHz fixed switching frequency, average current control, input brown-out detection (VINS threshold: 0.8 V turn-off / 1.5 V turn-on), 5 V ±2% internal reference, and 1.5 A gate drive capability. It targets universal-input (85–265 VAC) industrial and consumer power supplies requiring IEC 61000-3-2 Class D compliance.

For engineers reviewing the ICE1PCS02G datasheet, ICE1PCS02G pinout, ICE1PCS02G application, or ICE1PCS02G equivalent, key selection criteria include brown-out hysteresis behavior, external voltage/current loop compensation flexibility, startup current sourcing (30 µA), peak current limiting, and open-loop protection response timing.

Technical Context

The ICE1PCS02G implements a cascaded dual-loop architecture: an inner average current loop (sensed via ISENSE, compensated at ICOMP) shapes sinusoidal input current in CCM, while the outer voltage loop (sensed at VSENSE, compensated at VCOMP) regulates 300–400 V DC bus voltage. Both loops operate with externally configurable RC networks to optimize stability across load and line variations.

Its protection subsystem integrates cycle-by-cycle peak current limiting, soft overcurrent control, brown-out detection with hysteresis, over-voltage protection (OVP), open-loop detection, and VCC under-voltage lockout (UVLO: 11.2 V turn-on / 10.2 V turn-off). The GATE driver delivers 1.5 A sink/source with 11.5 V clamp, enabling direct MOSFET drive without external buffers.

Key Specifications

Pinout & Package

ICE1PCS02G is housed in an 8-pin PG-DSO-8 (SOIC-8) surface-mount package with exposed thermal pad (pin 1 = GND, pin 8 = GATE), optimized for automated assembly and thermal performance in compact power supplies.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ICE1PCS01G, ICE1PCS02G adds brown-out hysteresis and faster startup-critical for grid-unstable regions-while UCC28070 offers higher power scalability and interleaving but requires full schematic redesign and loop recompensation.

Availability

ICE1PCS02G is available at Aetrix Electronics and suitable for industrial SMPS, LED driver front-ends, and medical AC-DC modules requiring stable component supply, long-term lifecycle support, and RoHS-compliant DSO packaging.

Supply support for ICE1PCS02G 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 leadership in silicon carbide and CoolMOS™ technologies.

The ICE1PCS series belongs to Infineon's dedicated CCM PFC controller product line, designed specifically for cost-sensitive, high-efficiency boost PFC stages in universal-input offline power supplies up to 300 W.

FAQ

What is the purpose of the VINS pin and how does its hysteresis improve system reliability?

The VINS pin monitors a scaled version of the rectified AC input to detect brown-out conditions. It shuts down the IC when VINS falls below 0.8 V and restarts only when VINS rises above 1.5 V, providing 0.7 V hysteresis. This prevents rapid cycling during marginal line voltage sags, eliminates audible relay or transformer buzz, and avoids repeated stress on the bulk capacitor and boost diode during unstable grid conditions.

Can ICE1PCS02G operate in discontinuous conduction mode (DCM)?

ICE1PCS02G is explicitly designed for continuous conduction mode (CCM) operation in boost PFC topologies. However, the datasheet states it may enter DCM under very light load conditions depending on choke inductance and line voltage. In DCM, harmonic performance degrades but still meets IEC 61000-3-2 Class D requirements. It does not support intentional DCM operation or control algorithms.

How does the 30 µA startup current at VCOMP differ from typical PFC controllers and what benefit does it provide?

Unlike many PFC controllers that use reduced startup current (e.g., 10 µA), ICE1PCS02G sources a full 30 µA into the VCOMP compensation network during startup. This charges the VCOMP capacitor faster, accelerating the rise of the output bus voltage and reducing total startup time by ~3× compared to ICE1PCS01G. It also ensures controlled, linear inrush current, lowering stress on the bulk capacitor and input bridge rectifier.

Is external current sensing resistor (R1) required, and what is the recommended value range?

Yes, an external sense resistor R1 is mandatory at the ISENSE pin to convert inductor current into a measurable voltage. The datasheet specifies ISENSE input range as 0–1.5 V, with typical peak current sensing at 1.0–1.2 V. For a 10 A peak inductor current, R1 = 100 mΩ yields 1.0 V; values between 50 mΩ and 200 mΩ are common. A 220 Ω series resistor (R2) is recommended between R1 and ISENSE to limit inrush current into the pin during startup.