Infineon Technologies ICE5QR2280AZXKLA1

Overview

ICE5QR2280AZXKLA1 from Infineon is a quasi-resonant 800 V CoolSET™ integrated power IC combining a digital controller and avalanche-rugged CoolMOS™ in a single DIP-7 package, delivering up to 41 W at 220 VAC ±20%, featuring active burst mode (<100 mW standby), digital frequency reduction (up to 10 zero crossings), and robust line protection (OVP/brownout). It targets auxiliary flyback supplies in home appliances, TVs, and monitors.

For engineers reviewing the ICE5QR2280AZXKLA1 datasheet, ICE5QR2280AZXKLA1 pinout, ICE5QR2280AZXKLA1 application, or ICE5QR2280AZXKLA1 equivalent, key selection criteria include its 800 V drain rating, 2.13 Ω R_DS(on), cascode-based fast startup, selectable active burst entry/exit thresholds, and integrated thermal, OVP, brownout, and CS-short-to-GND protections.

Technical Context

This IC implements a digitally controlled quasi-resonant flyback controller with zero-crossing detection (ZCD) for valley-switching, using an internal up/down counter to modulate switching frequency across 10 zero crossings-reducing EMI and improving efficiency at light loads. Its cascode configuration enables fast VCC pre-charging via ZCD during startup.

The device integrates dual-protection logic: analog comparators for VIN-based line OVP/brownout and digital autorestart for VCC OVP/UVP, overload, output OVP, overtemperature, and CS short-to-GND. Burst mode operation is digitally configurable with independent entry and exit power thresholds.

Key Specifications

Pinout & Package

ICE5QR2280AZXKLA1 is housed in PG-DIP-7 (7-pin dual in-line plastic) package with creepage/clearance optimized for reinforced insulation in offline applications.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quasi-resonant flyback controller applications.

Compared with ICE5QR2270AZ and ICE5QR1070AZ, ICE5QR2280AZXKLA1 uniquely combines 800 V ruggedness with sub-100 mW standby and digital frequency agility-making it optimal for globally deployed consumer electronics requiring both surge immunity and strict energy regulation compliance.

Availability

ICE5QR2280AZXKLA1 is available at Aetrix Electronics and suitable for home appliance auxiliary supplies, TV standby power systems, and PC/server auxiliary rails requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.

Supply support for ICE5QR2280AZXKLA1 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 ICE5QRxxxxAx series belongs to Infineon's CoolSET™ family-designed specifically for high-efficiency, low-EMI quasi-resonant flyback converters in consumer and industrial auxiliary power supplies.

FAQ

What is the maximum continuous output power supported by ICE5QR2280AZXKLA1?

At 220 VAC ±20% and Ta = 50°C on a 2 oz copper single-sided PCB, ICE5QR2280AZXKLA1 supports up to 41 W continuous output power. This rating assumes minimum drain pin copper area and open-frame thermal conditions; actual power depends on heatsinking, transformer design, and ambient airflow. Derating is required above 50°C ambient.

How does the selectable Active Burst Mode function in practice?

The FB pin accepts two distinct voltage thresholds: one for burst entry (typically ~0.8 V) and another for burst exit (typically ~1.2 V), set via external resistor divider. This allows independent control of when the IC enters ultra-low-power burst mode and when it resumes normal QR operation-enabling precise compliance with regional standby power regulations like DOE Level VI.

Can ICE5QR2280AZXKLA1 operate without an optocoupler?

No-ICE5QR2280AZXKLA1 requires optocoupler feedback connected to the FB pin for primary-side regulation and burst mode control. It lacks secondary-side sensing or auxiliary winding voltage feedback capability. The FB pin also serves as the overload and open-loop protection input, making optocoupler integration mandatory for closed-loop stability and safety.

What is the purpose of the VIN pin beyond line OVP and brownout?

Beyond OVP and brownout detection, the VIN pin sets the minimum zero-crossing (ZC) count threshold that distinguishes high-line (220–240 VAC) from low-line (85–132 VAC) operation. This enables automatic adjustment of digital frequency reduction depth and ringing suppression timing-optimizing efficiency and EMI performance across universal input ranges without external configuration.