Infineon Technologies ICE3A3565P

Overview

ICE3A3565P from Infineon Technologies is an integrated off-line SMPS current-mode controller with built-in 650V depletion CoolMOS™ and startup cell, designed for high-efficiency AC/DC flyback converters in open-frame power supplies. It delivers 170W input power at 230VAC ±15%, operates at 100kHz fixed frequency, features 1.55Ω R_DS(on) (T=25°C), and supports Active Burst Mode for <100mW standby power.

For engineers reviewing the ICE3A3565P datasheet, ICE3A3565P pinout, ICE3A3565P application, or ICE3A3565P equivalent, key selection criteria include its integrated high-voltage switch, auto-restart protection suite (overtemperature, overvoltage, overload, VCC UVLO), adjustable blanking window for load-jump immunity, and PG-TO220-6-47 isolated-drain package enabling simplified heatsinking in industrial and consumer SMPS designs.

Technical Context

The ICE3A3565P implements a current-mode PWM control architecture with internal oscillator set to 100kHz, precise peak-current limiting (<±5% tolerance), and leading-edge blanking for noise immunity. Its integrated 650V depletion CoolMOS™ eliminates external HV startup resistors and enables direct rectified-line connection.

Control logic includes Active Burst Mode triggered by feedback voltage level, soft-start via external capacitor on SoftS pin, and Auto Restart Mode for five independent fault conditions - all managed without external supervision. The isolated drain package (Pin 1) provides creepage separation between primary-side switching node and secondary-side control circuitry.

Key Specifications

Pinout & Package

ICE3A3565P uses the PG-TO220-6-47 package - a 6-pin isolated-drain TO-220 variant with creepage-enhanced layout and Pin 1 as the CoolMOS™ drain terminal electrically separated from control pins. This package supports direct mounting to heatsinks without insulating pads when used in non-isolated configurations, and meets reinforced insulation requirements for primary-side switching.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar off-line SMPS controller applications.

Compared with ICE3A3565I and ICE3B3565P, the ICE3A3565P offers optimal balance of 100kHz switching, minimal external components, and PG-TO220-6-47 mechanical compatibility - making it preferred for new designs targeting compact size, low standby loss, and simplified thermal management.

Availability

ICE3A3565P is available at Aetrix Electronics and suitable for industrial AC/DC adapters, LED driver power supplies, and white goods auxiliary PSUs requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for ICE3A3565P 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.

The CoolSET™-F3 product line targets cost-sensitive, high-reliability offline SMPS designs - integrating HV switch, controller, and protection logic to reduce BOM count and improve system-level robustness in consumer, industrial, and appliance power supplies.

FAQ

What is the maximum continuous input power rating for ICE3A3565P?

The ICE3A3565P supports up to 170W continuous input power at 230VAC ±15% in an open-frame design with Ta=50°C, Tj=125°C, and external heatsink thermal resistance of 2.7K/W. This rating assumes proper PCB copper area and airflow per Infineon's thermal guidelines in datasheet Section 5.

Does ICE3A3565P require an external startup resistor?

No. ICE3A3565P integrates a 650V depletion CoolMOS™ startup cell that draws initial current directly from the rectified AC line, eliminating the need for external high-voltage startup resistors and their associated power loss and reliability concerns.

How does the adjustable blanking window improve system reliability?

The adjustable blanking window - configured via external resistor on the CS pin - suppresses false overcurrent triggering during high di/dt events like cold-start inrush or output short recovery. This prevents unintended Auto Restart Mode activation and maintains stable operation under dynamic load conditions.

Can ICE3A3565P be used in isolated flyback topologies with optocoupler feedback?

Yes. ICE3A3565P is specifically designed for optocoupler-based isolated flyback converters. Its FB pin accepts a current-mode signal from the secondary-side TL431/optocoupler network, enabling precise primary-side regulation without secondary-side shunt regulators.