Infineon Technologies ICE2QR2280Z1XKLA1

Overview

ICE2QR2280Z1XKLA1 from Infineon Technologies is a quasi-resonant PWM controller IC with integrated 800V avalanche-rugged CoolMOS® and startup cell in PG-DIP-7 package, designed for off-line SMPS in LCD monitors and DVD/Blu-ray players. It delivers 54W max input power at 230VAC, features Active Burst Mode (<100mW no-load standby), digital frequency reduction, and V_CC turn-off threshold of 8.5V.

For engineers reviewing the ICE2QR2280Z1XKLA1 datasheet, ICE2QR2280Z1XKLA1 pinout, ICE2QR2280Z1XKLA1 application, or ICE2QR2280Z1XKLA1 equivalent, key selection criteria include integrated high-voltage MOSFET rating, quasi-resonant zero-crossing detection timing, burst-mode ripple control, and V_CC undervoltage lockout behavior under wide AC input (85–265VAC).

Technical Context

The device implements peak-current-mode quasi-resonant control using a digital up/down counter synchronized to transformer demagnetization via ZC pin, enabling valley-switching across load range. Its integrated startup cell pre-charges V_CC with regulated ~1.05mA current until V_VCCon = 13.5V, then disables to reduce standby loss.

Digital frequency reduction adjusts switching frequency downward as load decreases-maintaining high efficiency down to light loads-while Active Burst Mode gates entire PWM cycles to achieve <0.1W no-load input power. Protection includes cycle-by-cycle current limiting, foldback correction, and latch-off OVP triggered by ZC voltage threshold.

Key Specifications

Pinout & Package

Package: PG-DIP-7 (Plastic Dual In-line Package, 7-pin, 0.3" width, creepage ≥ 5.5mm). Pin 6 is omitted (no physical pin); Pin 4 is NC (no internal connection).

Key Features

Applications

Equivalent & Alternatives

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

Compared with ICE2QR4780Z and ICE3B0565J, ICE2QR2280Z1XKLA1 offers superior power density (54W in DIP-7), lowest no-load consumption, and full quasi-resonant autonomy-making it optimal for space-constrained, energy-sensitive consumer SMPS where integrated HV startup and precise valley detection are critical.

Availability

ICE2QR2280Z1XKLA1 is available at Aetrix Electronics and suitable for LCD monitor power supplies, Blu-ray player SMPS, and set-top box adapters requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.

Supply support for ICE2QR2280Z1XKLA1 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 wafer fabrication facilities.

This part belongs to the CoolSET®-Q1 product line-designed specifically for highly integrated, low-standby-power quasi-resonant flyback converters targeting consumer electronics with stringent EMI and energy-efficiency requirements.

FAQ

What is the purpose of the ZC pin beyond zero-crossing detection?

The ZC pin serves dual functionality: it provides the timing signal for valley-switching initiation and simultaneously acts as the input for output overvoltage protection. When the voltage at ZC exceeds 2.5V-indicating abnormal auxiliary winding voltage-the IC enters latch-off mode, halting all switching until power cycle reset. This eliminates need for separate OVP circuitry.

How does the integrated startup cell differ from conventional HV resistors?

Unlike passive HV start-up resistors that continuously dissipate power, the integrated startup cell uses an active high-voltage transistor controlled by on-chip logic. It delivers ~1.05mA pre-charge current until V_CC reaches 13.5V, then shuts off-reducing standby loss by >30mW compared to 1MΩ/1W resistor solutions and improving thermal reliability.

Can ICE2QR2280Z1XKLA1 operate in discontinuous conduction mode (DCM)?

Yes-it is explicitly designed for DCM quasi-resonant operation. The ZC detector triggers switch-on only after transformer demagnetization is confirmed, ensuring true valley switching. Internal ringing suppression time prevents false triggering during high-frequency oscillation, maintaining stable DCM operation even under light loads or low-output conditions.

What thermal design considerations apply to the Drain pin?

The Drain pin connects directly to the CoolMOS® die and must be routed to ≥232 mm² of 2 oz copper on the primary-side PCB layer to achieve rated 54W input power at T_a = 50°C. Thermal vias under the exposed pad (if present) and minimized trace length between Drain and bulk capacitor are mandatory to maintain junction temperature below 125°C.