Infineon Technologies ICE3A1065

Overview

ICE3A1065 from Infineon Technologies is a 650V off-line SMPS current-mode controller IC integrating a depletion-mode CoolMOS™ power transistor and 650V startup cell in a single PG-DIP-8 package. It delivers 32W input power at 230VAC ±15%, operates at 100kHz fixed frequency, features <±5% peak current limiting tolerance, and enables <100mW standby power via Active Burst Mode - used in compact AC/DC adapters for consumer electronics.

For engineers reviewing the ICE3A1065 datasheet, ICE3A1065 pinout, ICE3A1065 application, or ICE3A1065 equivalent, key selection criteria include its integrated 650V CoolMOS™ with R_DS(on) = 2.95Ω, 100kHz switching frequency, active burst mode control, auto-restart protection suite, and DIP-8 isolation-compatible layout for low-EMI flyback designs.

Technical Context

The ICE3A1065 implements a current-mode PWM control architecture with internal oscillator set to 100kHz, precise leading-edge blanking, and propagation delay compensation for stable peak-current sensing. Its integrated CoolMOS™ drain-source path supports 650V avalanche ruggedness and operates with a typ. R_DS(on) of 2.95Ω at 25°C.

Control logic includes adjustable blanking window for high-load-jump immunity, user-defined soft-start via external capacitor on SoftS pin, and feedback-driven Active Burst Mode that maintains immediate load-step response while reducing output ripple to <1%. Protection functions are implemented as Auto Restart Modes for overtemperature, VCC overvoltage, open-loop, overload, and VCC undervoltage conditions.

Key Specifications

Pinout & Package

ICE3A1065 uses the PG-DIP-8 package (8-pin dual in-line plastic), with pins 4 and 5 internally shorted to carry the high-voltage drain connection. The package provides creepage distance compliant with reinforced insulation requirements for AC/DC converters up to 265VAC input.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ICE3B1065 and ICE3A2065, the ICE3A1065 balances cost, size, and efficiency for mid-power consumer adapters - offering optimal magnetics volume at 100kHz while delivering verified <100mW standby without sacrificing load-step response.

Availability

ICE3A1065 is available at Aetrix Electronics and suitable for USB-C wall adapters, smart home power supplies, LED drivers for smart bulbs, and industrial control auxiliary supplies requiring stable component supply, long-lifecycle support, and RoHS-compliant manufacturing.

Supply support for ICE3A1065 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-efficiency off-line SMPS designs - integrating HV power switches and controllers to reduce system size, BOM count, and design complexity for consumer and industrial AC/DC conversion.

FAQ

What is the maximum continuous input power rating for ICE3A1065 in an open-frame design?

The ICE3A1065 delivers up to 32W continuous input power at 230VAC ±15% under open-frame conditions (T_a = 50°C, T_j = 125°C, R_thCA = 2.7K/W). This rating assumes proper PCB copper area for thermal dissipation and accounts for conduction and switching losses in the integrated CoolMOS™.

How does the Active Burst Mode reduce standby power below 100mW?

Active Burst Mode dynamically modulates switching bursts based on feedback voltage, keeping the controller fully active between bursts. Unlike traditional skip-cycle modes, it avoids blackouts and maintains regulation, achieving <100mW no-load consumption while limiting output ripple to <1% through precise burst timing and internal reference stability.

Can ICE3A1065 replace ICE3A0565 in an existing design?

Yes - both use identical PG-DIP-8 packaging, pinout, and functional architecture. The ICE3A1065 offers lower R_DS(on) (2.95Ω vs. 4.70Ω), enabling higher power output (32W vs. 25W) or improved efficiency at same load. Thermal design should be re-evaluated due to increased power handling capability.

What protection features trigger Auto Restart Mode?

Auto Restart Mode activates on five independent fault conditions: overtemperature (T_j > 150°C), VCC overvoltage (>27V), output open-loop (FB open), overload (CS threshold exceeded continuously), and VCC undervoltage (<8.5V). Recovery occurs automatically after fault removal and internal timer expiration, without external intervention.