Infineon Technologies ICE2QR2280GXUMA1

Overview

ICE2QR2280GXUMA1 from Infineon is a quasi-resonant AC-DC controller IC integrating an 800 V avalanche-rugged CoolMOS™ transistor and digital PWM control in a single PG-DSO-12 package. It delivers 53 W max input power at 230 VAC, supports active burst mode (<100 mW no-load standby), and enables zero-voltage switching via ZC detection for reduced EMI and diode stress - deployed in Blu-ray players, set-top boxes, and auxiliary supplies for TVs and printers.

For engineers reviewing the ICE2QR2280GXUMA1 datasheet, ICE2QR2280GXUMA1 pinout, ICE2QR2280GXUMA1 application, or ICE2QR2280GXUMA1 equivalent, key selection criteria include its integrated 800 V CoolMOS™ R_DS(on) of 2.26 Ω, digital frequency reduction down to light load, built-in soft-start (12 ms), cycle-by-cycle current limiting, and dual-mode protection (auto-restart + latch-off).

Technical Context

The IC implements peak-current-mode quasi-resonant control with digital zero-crossing detection and an up/down counter that dynamically adjusts switching frequency based on feedback voltage (V_FB) - enabling efficient operation from full load down to burst mode. Its startup cell provides controlled pre-charging of V_CC using a high-voltage device regulated to ~1.05 mA until V_VCC(on) = 14.5 V is reached.

Digital frequency reduction uses a 48 ms sampling window to compare V_FB against three internal thresholds (V_FBZL, V_FBZH, V_FBR1), adjusting the ZC counter value to modulate off-time and maintain regulation while minimizing switching loss. Protection includes foldback point correction, maximum on-time limitation, and dual-mode OV/UV/OL/OT response.

Key Specifications

Pinout & Package

Package: PG-DSO-12 (12-pin exposed-drain SOIC variant with thermal pad; RoHS-compliant, halogen-free mold compound).

Key Features

Applications

Equivalent & Alternatives

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

Compared with ICE2QR4780GXUMA1 and ICE3B1565JFXUMA1, ICE2QR2280GXUMA1 uniquely combines 800 V ruggedness, integrated digital burst mode, and 53 W capability in one package - making it optimal for global-input, high-efficiency consumer auxiliary supplies requiring strict no-load power limits and simplified layout.

Availability

ICE2QR2280GXUMA1 is available at Aetrix Electronics and suitable for Blu-ray players, set-top boxes, TV auxiliary supplies, and printer main SMPS requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.

Supply support for ICE2QR2280GXUMA1 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 is a German semiconductor leader specializing in power management, automotive MCUs, and security solutions, with core expertise in silicon and wide-bandgap devices.

The CoolSET™-Q1 product line integrates high-voltage power transistors with digital control logic to simplify offline SMPS design - targeting cost-sensitive, high-volume consumer and computing power supplies demanding efficiency, safety, and compactness.

FAQ

What is the purpose of the ZC pin, and how is it used in quasi-resonant operation?

The ZC (Zero-Crossing) pin receives a delayed signal from the transformer auxiliary winding and feeds the internal zero-crossing detector. This enables valley-switching - turning on the CoolMOS™ at the minimum drain voltage point after demagnetization - reducing switching loss and EMI. It also serves as the input for output overvoltage protection via internal V_ZC threshold comparison.

How does the Active Burst Mode achieve <100 mW standby power?

Active Burst Mode disables entire switching cycles while maintaining feedback loop supervision. The controller monitors V_FB and enters burst when load drops below threshold; during burst, it fires short, regulated bursts to recharge output capacitors, then sleeps - achieving ultra-low average power draw without compromising output voltage stability or introducing audible noise.

Can ICE2QR2280GXUMA1 be used without an external startup resistor?

Yes - the integrated startup cell eliminates the need for an external high-voltage resistor. It uses an internal HV transistor and controller to deliver a regulated ~1.05 mA current to charge the V_CC capacitor until the IC turns on at V_VCC(on) = 14.5 V, reducing component count, heat generation, and board space versus discrete startup networks.

What protection features are implemented, and how do they differ in response?

The IC implements two protection classes: auto-restart (for V_CC over/under-voltage, overload, overtemperature) resets after fault clearance, while latch-off (for adjustable output overvoltage and transformer short-winding) holds shutdown until power cycle. This dual-mode approach satisfies both transient resilience and fail-safe requirements in safety-critical consumer power supplies.