Infineon Technologies ICE3A0565ZXKLA1

Overview

ICE3A0565ZXKLA1 from Infineon Technologies is a fully integrated off-line SMPS current-mode controller with built-in 650V depletion CoolMOS™ and startup cell, housed in PG-DIP-8 package. It delivers 25W continuous input power at 230VAC ±15%, operates at fixed 100kHz switching frequency, features <±5% peak current limiting tolerance, and achieves <100mW standby power via Active Burst Mode - used in compact AC/DC adapters and auxiliary power supplies.

For engineers reviewing the ICE3A0565ZXKLA1 datasheet, ICE3A0565ZXKLA1 pinout, ICE3A0565ZXKLA1 application, or ICE3A0565ZXKLA1 equivalent, key selection criteria include its integrated high-voltage switch, precise current sensing, Auto Restart protection modes (overtemperature, overvoltage, open-loop), adjustable blanking window for load-jump immunity, and RoHS-compliant DIP-8 isolation.

Technical Context

This controller implements current-mode PWM control with internal oscillator set to 100kHz, leading-edge blanking, and propagation delay compensation for accurate peak-current detection. Its integrated 650V CoolMOS™ enables direct rectified AC input connection without external HV startup resistor.

The control unit supports Active Burst Mode triggered by feedback voltage level, enabling immediate response to load transients while maintaining <1% output ripple. Protection logic includes five independent Auto Restart conditions - VCC undervoltage, overvoltage, overtemperature, overload, and open-loop - each initiating safe shutdown and periodic retry.

Key Specifications

Pinout & Package

ICE3A0565ZXKLA1 uses the PG-DIP-8 package (8-pin dual in-line plastic), with pins 4 and 5 internally shorted as common drain terminals. The package provides reinforced creepage distance (>8 mm) and isolation between primary-side drain and low-voltage control circuitry.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ICE3A0565Z, ICE3A0565ZXKLA1 offers superior creepage and dual-drain current sharing; versus ICE3B0565, it delivers higher power density at 100 kHz but requires tighter EMI filtering.

Availability

ICE3A0565ZXKLA1 is available at Aetrix Electronics and suitable for USB-C adapters, smart home hubs, industrial sensor transmitters, and LED driver auxiliary supplies requiring stable component supply, full traceability, and long-lifecycle support.

Supply support for ICE3A0565ZXKLA1 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 manufacturing and quality certification to ISO 9001 and IATF 16949.

This device belongs to the CoolSET™-F3 family - designed specifically for cost-sensitive, high-efficiency off-line SMPS applications requiring integrated HV switching and ultra-low standby power.

FAQ

What is the maximum continuous input power supported by ICE3A0565ZXKLA1?

At 230VAC ±15% and Ta=75°C with no heatsink, ICE3A0565ZXKLA1 supports up to 25W continuous input power. This rating assumes standard DIP-8 PCB layout with minimal copper area; derating applies above 75°C ambient or with restricted airflow.

How does the integrated startup cell eliminate the need for an external HV resistor?

The integrated 650V depletion-mode CoolMOS™ acts as a self-biasing startup switch: it conducts initially to charge the VCC capacitor from the rectified line, then turns off once VCC reaches 14.5V, removing all static power draw - unlike resistive startup which continuously dissipates watts.

Can ICE3A0565ZXKLA1 operate in discontinuous conduction mode (DCM)?

Yes - its current-mode architecture and 72% max duty cycle support both DCM and CCM operation. DCM is typical in low-power adapters (<15W), while CCM enables higher power density; mode selection depends on transformer design and load range.

What protection features trigger Auto Restart versus latch-off behavior?

All five protections - overtemperature, VCC overvoltage, VCC undervoltage, overload, and open-loop - initiate Auto Restart: the IC shuts down, waits ~1 s, then attempts restart. No latch-off mode exists; this ensures automatic recovery from transient faults without manual intervention.