Infineon Technologies ICE2A280Z

Overview

ICE2A280Z from Infineon Technologies is an off-line SMPS current mode controller with integrated 800V avalanche-rugged CoolMOS™, housed in a PG-DIP-7-1 package. It delivers 50W maximum power at 230VAC ±15%, operates at 100kHz switching frequency, features <±5% overall peak current limiting tolerance, and supports low-power standby mode compliant with European Commission requirements for energy efficiency.

For engineers reviewing the ICE2A280Z datasheet, ICE2A280Z pinout, ICE2A280Z application, or ICE2A280Z equivalent, key selection considerations include its 800V drain rating, integrated soft-start control, auto-restart protection architecture, precise current sensing via external sense resistor, and DIP-7 footprint compatibility with board-level thermal management constraints.

Technical Context

The ICE2A280Z implements a current-mode PWM control architecture with internal leading-edge blanking and propagation delay compensation to ensure stable cycle-by-cycle current regulation. Its oscillator supports fixed 100kHz operation with frequency reduction to 20–21.5kHz in standby to suppress audible noise while maintaining output regulation.

The integrated protection unit enables auto-restart behavior during open-loop, overload, or overvoltage faults-triggered by feedback loss, excessive Isense voltage, or VCC overvoltage-and includes thermal shutdown with hysteresis. The CoolMOS™ drain is rated for 800V with avalanche ruggedness, and the Isense input directly interfaces with the source node of the integrated transistor for accurate primary-side current sensing.

Key Specifications

Pinout & Package

ICE2A280Z uses the PG-DIP-7-1 package: 7-pin dual-in-line, 300-mil width, gull-wing leads, RoHS-compliant lead finish, and halogen-free mold compound. Pin 6 is not connected (N.C.).

Key Features

Applications

Equivalent & Alternatives

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

Compared with ICE2A265, ICE2A280Z provides 800V robustness in the same compact DIP-7 form factor, enabling surge-tolerant designs without layout change; versus ICE2A380P2, it trades power scalability for PCB-area savings and simplified assembly in sub-60W consumer applications.

Availability

ICE2A280Z is available at Aetrix Electronics and suitable for LED driver power supplies, smart home AC-DC adapters, and industrial sensor power modules requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.

Supply support for ICE2A280Z 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.

ICE2A280Z belongs to the CoolSET™-F2 product line-designed specifically for cost-sensitive, high-efficiency offline SMPS in consumer and industrial applications where integration, standby performance, and surge resilience are critical.

FAQ

What is the maximum continuous output power achievable with ICE2A280Z in an open-frame design?

The ICE2A280Z delivers up to 50W maximum continuous output power at 230VAC ±15% with Ta = 75°C, Tj = 125°C, and 6 cm² copper area on the PCB. This rating assumes proper thermal layout, standard flyback topology, and operation within specified VCC and Isense voltage limits. Derating is required for 85VAC operation or elevated ambient temperatures beyond 75°C.

Does ICE2A280Z require an external startup resistor, and what is the recommended value?

Yes-ICE2A280Z requires an external high-voltage startup resistor connected between the rectified AC line and the VCC pin. A typical value is 1 MΩ, 2 W, selected to deliver ≥1 mA initial charging current to the VCC capacitor while surviving 305VAC peak line voltage. The resistor must be rated for 1 kV surge and placed outside the creepage boundary per IEC 62368-1.

How does the SoftS pin function during fault recovery, and what capacitor value sets a 500ms restart interval?

The SoftS pin controls both soft-start ramp time and auto-restart timeout. During fault detection, the internal protection unit discharges the SoftS capacitor; restart occurs only after it recharges to ~2.5V. For a 500ms interval, use a 100 nF capacitor with a 5.1 MΩ pull-up resistor to VCC, yielding τ ≈ 0.51 s (t ≈ 5τ). Values must be verified with actual board parasitics and temperature drift.

Can ICE2A280Z drive a transformer with more than 100kHz fundamental frequency, and what limits higher switching?

No-ICE2A280Z is factory-trimmed for fixed 100kHz operation; its internal oscillator lacks external frequency programming. Attempting to force higher frequencies via external components violates absolute maximum ratings and causes unpredictable PWM latch-up or premature failure. The 100kHz limit ensures optimal balance of CoolMOS™ switching loss, transformer core loss, and EMI filter size in certified designs.