Infineon Technologies ICE2A280ZXKLA1

Overview

ICE2A280ZXKLA1 from Infineon Technologies is an off-line AC/DC current-mode PWM controller with integrated 800V CoolMOS™ power transistor in PG-DIP-7-1 package, delivering 50W output power at 230VAC ±15%, operating at 100kHz switching frequency with 0.8Ω R_DS(on), and featuring auto-restart protection, precise ±5% peak current limiting, and low-power standby mode compliant with European Commission requirements.

For engineers reviewing the ICE2A280ZXKLA1 datasheet, ICE2A280ZXKLA1 pinout, ICE2A280ZXKLA1 application, or ICE2A280ZXKLA1 equivalent, key selection considerations include its 800V drain rating for universal input designs, DIP-7 footprint compatibility with board-level creepage requirements, soft-start programmability via external capacitor, and integrated leading-edge blanking for robust current sensing in flyback converters.

Technical Context

The ICE2A280ZXKLA1 implements a fixed-frequency current-mode control architecture with internal oscillator set to 100kHz and frequency reduction down to 20kHz/21.5kHz in standby to suppress audible noise. Its PWM latch and comparator use sensed source voltage (via Isense) referenced to GND for cycle-by-cycle current limiting.

Protection is managed by a dedicated unit that triggers auto-restart on overload, open-loop, overvoltage, or thermal shutdown conditions. The SoftS pin serves dual function-initiating controlled soft-start at power-up and enabling configurable auto-restart timing after fault detection.

Key Specifications

Pinout & Package

ICE2A280ZXKLA1 uses the PG-DIP-7-1 package (7-pin dual in-line, staggered lead pitch), with isolated drain terminals and creepage-enhanced layout for reinforced insulation in AC/DC adapters and industrial power supplies.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ICE2A265Z, ICE2A280ZXKLA1 provides superior surge immunity for global deployments; versus ICE2A380P2, it delivers space-constrained designs with lower thermal mass and no heatsink requirement below 31W.

Availability

ICE2A280ZXKLA1 is available at Aetrix Electronics and suitable for USB-C PD adapters, industrial IoT power supplies, smart home lighting drivers, and medical auxiliary power supplies requiring stable component supply, long-term lifecycle support, and compliance with RoHS and halogen-free manufacturing standards.

Supply support for ICE2A280ZXKLA1 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 centers and ISO 9001-certified wafer fabs.

The CoolSET™-F2 product line targets cost-sensitive, high-efficiency offline SMPS designs-specifically engineered to reduce external component count, simplify EMI filtering, and meet stringent EU standby power regulations.

FAQ

What is the maximum continuous output power achievable with ICE2A280ZXKLA1 in open-frame design?

At ambient temperature T_a = 75°C, junction temperature T_j = 125°C, and 6 cm² PCB copper area, ICE2A280ZXKLA1 delivers 31W continuous output power. This rating assumes proper thermal layout per Infineon's recommended footprint and airflow conditions typical of enclosed AC/DC adapters. Derating applies above 75°C ambient or with reduced copper area.

How does the SoftS pin configure both soft-start and auto-restart behavior?

The SoftS pin uses a single external capacitor to set soft-start ramp time during power-up; after fault detection, the same capacitor discharges and recharges through internal current sources to define auto-restart interval. Time constants differ: soft-start uses ~10µA charge current, while auto-restart uses ~1µA, yielding longer recovery delays than startup ramps.

Can ICE2A280ZXKLA1 be used in quasi-resonant (QR) flyback topologies?

No-ICE2A280ZXKLA1 operates exclusively in fixed-frequency current-mode control and lacks valley-switching detection circuitry required for QR operation. It is designed for DCM/CCM flyback converters with external timing components; QR functionality would require a dedicated controller like Infineon's ICE5QSBG or BD7682FJ-LB.

What is the purpose of the N.C. pin (Pin 4) in the PG-DIP-7-1 package?

Pin 4 is internally unconnected and serves only as a mechanical spacer to enhance creepage distance between high-voltage Drain (Pin 5) and low-voltage control pins (SoftS, FB, Isense). It must remain unpopulated and unconnected on PCB to prevent unintended coupling, leakage paths, or solder bridging that could compromise isolation integrity.