Infineon Technologies ICE2A0565FKLA1

Overview

ICE2A0565FKLA1 from Infineon Technologies is an off-line AC/DC current-mode PWM controller with integrated 650V CoolMOS™ power transistor, designed for flyback SMPS in low-power standby applications. It delivers 23W output at 230VAC ±15%, operates at 100kHz switching frequency, features <±5% peak current limiting tolerance, and supports auto-restart protection during overload or open-loop faults.

For engineers reviewing the ICE2A0565FKLA1 datasheet, ICE2A0565FKLA1 pinout, ICE2A0565FKLA1 application, or ICE2A0565FKLA1 equivalent, key selection criteria include integrated high-voltage MOSFET capability, precise current sensing for transformer sizing, frequency reduction for <150mW standby power, and thermal shutdown with auto-restart behavior in unregulated conditions.

Technical Context

The ICE2A0565FKLA1 implements a current-mode control architecture with internal leading-edge blanking and propagation delay compensation to ensure stable duty-cycle regulation under varying load and line conditions. Its oscillator supports fixed 100kHz operation with frequency reduction to 20–21.5kHz in standby mode to suppress audible noise while maintaining output regulation.

Protection is managed by a dedicated unit that triggers auto-restart on overvoltage (no-load), overload (short-circuit), or thermal shutdown events. The integrated CoolMOS™ drain-source voltage rating is 650V with avalanche ruggedness, and the Isense input directly interfaces with a source-series sense resistor for cycle-by-cycle current limiting.

Key Specifications

Pinout & Package

ICE2A0565FKLA1 is supplied in PG-DIP-8 package with creepage-enhanced layout and isolated drain pins. The 8-pin dual-in-line configuration supports through-hole mounting and simplified primary-side layout for Class II isolation compliance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ICE2A0565Z and ICE2A0565G, the ICE2A0565FKLA1's PG-DIP-8 package provides superior thermal dissipation via dual Drain pins and simplified through-hole assembly, making it optimal for low-volume industrial power supplies where manual soldering and thermal margin are prioritized over footprint size or SMT compatibility.

Availability

ICE2A0565FKLA1 is available at Aetrix Electronics and suitable for USB wall adapters, smart home power supplies, industrial control sensors, and LED driver auxiliary supplies requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.

Supply support for ICE2A0565FKLA1 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™-F2 product line targets cost-sensitive, high-efficiency offline SMPS designs, integrating rugged CoolMOS™ transistors with advanced protection and low-standby control for consumer and industrial power adapters.

FAQ

What is the maximum continuous output power of ICE2A0565FKLA1 at 75°C ambient?

The ICE2A0565FKLA1 delivers 13W continuous output power at T_a = 75°C, T_j = 125°C, with 6 cm² copper area on the PCB. This rating assumes standard DIP-8 layout, 230VAC ±15% input, and proper heatsinking via dual Drain pins. Derating applies above 75°C ambient or with reduced copper area.

How does the SoftS pin control auto-restart behavior after a fault?

The SoftS pin sets both soft-start duration at power-up and auto-restart interval after protection activation. An external capacitor charges during normal operation; upon fault detection, the internal protection unit discharges this capacitor, and restart occurs only after it recharges to threshold - typically 0.5–2 seconds depending on capacitor value.

Can ICE2A0565FKLA1 operate with universal input (85–265VAC)?

Yes - the integrated 650V CoolMOS™ and internal V_CC startup circuit (operating down to 8.5V) enable reliable operation across 85–265VAC inputs. Startup is achieved via high-voltage current source charging the V_CC capacitor from the rectified line, supporting full universal range without auxiliary windings during initial start.

What is the purpose of the dual Drain pins (pins 4 and 5) in the PG-DIP-8 package?

Pins 4 and 5 are internally connected to the CoolMOS™ drain and serve as parallel high-current paths to reduce thermal resistance and improve heat transfer to the PCB. They also increase creepage distance between primary and secondary circuits, supporting reinforced insulation requirements in safety-critical AC/DC designs.