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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > AC DC Converters, Offline Switches

Infineon Technologies ICE2QR0665GXUMA1

Name: ICE2QR0665GXUMA1
Brand: Infineon Technologies
SKU: ICE2QR0665GXUMA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ICE2QR0665GXUMA1

Manufacturer:: Infineon Technologies

Category:: AC DC Converters, Offline Switches

Package:: 16-SOIC (0.154", 3.90mm Width), 12 Leads

Datasheet:: ICE2QR0665GXUMA1.pdf

Description:: IC OFFLINE SWITCH FLYBACK 12DSO

Quantity:: RFQ Add To RFQ list

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Product details

Overview

ICE2QR0665GXUMA1 from Infineon Technologies is a quasi-resonant AC-DC controller IC integrating a 650 V avalanche-rugged CoolMOS™ transistor and PWM control logic in a single PG-DSO-12 package. It delivers 45 W output power across universal input (85–265 VAC), supports active burst mode (<100 mW no-load standby), and enables digital frequency reduction for improved light-load efficiency in offline SMPS designs for consumer adapters and auxiliary supplies.

For engineers reviewing the ICE2QR0665GXUMA1 datasheet, ICE2QR0665GXUMA1 pinout, ICE2QR0665GXUMA1 application, or ICE2QR0665GXUMA1 equivalent, key selection criteria include its integrated 650 V/0.65 Ω CoolMOS™, ZC-based quasi-resonant switching, digital soft-start (12 ms), cycle-by-cycle current limiting, and dual-mode protection (auto-restart + latch-off) for OVP, OCP, OTP, and brown-in/out.

Technical Context

The ICE2QR0665GXUMA1 implements peak-current-mode quasi-resonant control using a zero-crossing (ZC) detector to trigger MOSFET turn-on at valley points, reducing EMI and voltage stress on secondary rectifiers. Its digital up/down counter dynamically adjusts switching frequency based on feedback voltage (VFB), enabling frequency reduction under decreasing load to minimize switching losses.

It integrates a dedicated startup cell that pre-charges VCC via a controlled high-voltage current source (1.05 mA typical), ensuring reliable start-up across full AC input range. Protection architecture includes foldback-corrected current limiting, maximum on-time clamping, and dual-threshold VCC monitoring for auto-restart (OVP/UVP) or latch-off (adjustable OVP, transformer short-winding detection).

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	650 V - avalanche-rated drain-source breakdown enables direct connection to 265 VAC rectified bus without external snubber stress.
R_DS(on)	0.65 Ω @ T_j = 25°C - low conduction loss supports 45 W continuous output at 50°C ambient without heatsink.
Standby Power	<100 mW @ no load - achieved via Active Burst Mode with controllable output ripple and minimal transformer audible noise.
Soft-Start Time	12 ms (digital, 4-step) - linear ramp of CS threshold (0.32 V → 1.00 V) prevents inrush stress on transformer, diode, and MOSFET.
VCC Operating Range	10.5 V to 25 V - wide supply window accommodates auxiliary winding design variations and ensures stable operation during line transients.
Protection Modes	Auto-restart (VCC OVP/UVP, OLP) + latch-off (adjustable OVP, short-winding) - configurable fault recovery behavior per system safety requirements.

Pinout & Package

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

Pin/Terminal	Circuit Role	Design Meaning
ZC	Zero-Crossing Input	Accepts delayed auxiliary winding signal; triggers valley-switching and enables output overvoltage detection via internal V_ZC threshold comparison.
FB	Feedback Input	Carries optocoupler-derived regulation signal; controls PWM off-time, digital frequency reduction, burst ratio, and open-loop protection.
CS	Current Sense / Source	Connects to primary shunt resistor; provides cycle-by-cycle peak current limit, short-winding detection, and PWM off-time determination.
Drain (Pins 5,6,7,8)	CoolMOS™ Drain Terminals	Four paralleled drain pins reduce conduction resistance and thermal impedance; directly connect to primary winding high-side node.
VCC	IC Supply Input	Power rail for internal logic and gate driver; monitored for 10.5 V turn-on and 25 V overvoltage latch-off.
GND	Signal & Power Ground	Common reference for CS, FB, ZC, and internal controllers; tied to CoolMOS™ source (pin 4) and PCB ground plane.
Pins 3,9,10	No Connect	Internally unconnected; must remain floating per datasheet - no external tie or routing required.

Key Features

Feature	Design Value
Digital Frequency Reduction	Adjusts switching frequency in discrete steps based on VFB level, reducing switching loss by >30% at 10% load vs. fixed-frequency operation.
Active Burst Mode	Disables switching cycles selectively while maintaining regulated output voltage ripple < ±5%, achieving <100 mW standby without audible transformer buzz.
Built-in Startup Cell	Integrates HV current source (1.05 mA typ.) and control logic to pre-charge VCC independently of auxiliary winding - eliminates external startup resistor.
Foldback Point Correction	Automatically lowers current limit threshold as output voltage drops, preventing thermal runaway during overload or short-circuit conditions.
Dual-Protection Architecture	Separate auto-restart (for transient faults like brown-out) and latch-off (for persistent hazards like output OVP or winding short) modes enhance system reliability.

Applications

Adapter/Charger

Set-Top Box Power Supply

Use Scenario: 12 V/3 A universal-input AC-DC adapter for portable monitors and peripherals.

IC Role / Device Role / Timing Role: Primary-side quasi-resonant controller with integrated 650 V CoolMOS™, managing ZC-synchronized switching and burst-mode transitions.

Use Value: Enables compact 25 mm × 25 mm board area and meets DOE Level VI & CoC Tier 2 standby power requirements (<100 mW).

Use Scenario: 5 V/2 A auxiliary supply powering HDMI interface, tuner, and microcontroller in satellite/cable STBs.

IC Role / Device Role / Timing Role: Standby-capable SMPS controller delivering regulated rail during deep-sleep states while maintaining fast wake-up response.

Use Value: Eliminates need for separate standby converter; reduces BOM count by 3 components (startup resistor, VCC cap, HV diode) versus discrete solutions.

Blue-ray/DVD Player PSU

Auxiliary Supply for Server ATX

Use Scenario: Dual-output (12 V/5 V) flyback supplying servo motor drivers and digital logic in optical disc drives.

IC Role / Device Role / Timing Role: Quasi-resonant controller coordinating primary switch timing with secondary synchronous rectifier drive signals.

Use Value: Reduces EMI emissions by 8 dBμV in 30–300 MHz band versus hard-switched alternatives, easing EMC certification.

Use Scenario: 3.3 V/1 A always-on rail powering IPMI, fan controllers, and RTC in enterprise server mainboards.

IC Role / Device Role / Timing Role: High-reliability auxiliary controller with latch-off OVP protecting downstream BMC circuitry from catastrophic failure.

Use Value: Supports 10-year field life with <1 FIT failure rate due to integrated avalanche-rugged CoolMOS™ and dual-threshold protection.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ICE2QR4765G	Same PG-DSO-12 package, 470 V CoolMOS™, R_DS(on) = 0.95 Ω, max 35 W output.	Limited to lower-power adapters (<35 W); reduced avalanche margin for 265 VAC surge handling.	Select when cost sensitivity outweighs universal input robustness and higher-power scalability.
UCC28632DR	TI QR controller only - no integrated MOSFET; requires external 600 V FET; supports 75 kHz–300 kHz variable frequency.	Enables higher peak power (60 W+) with optimized external FET selection but increases layout complexity and component count.	Select when design requires programmable frequency slope or discrete FET optimization for thermal distribution.

Compared with ICE2QR0665GXUMA1, ICE2QR4765G trades voltage rating and power capability for lower unit cost, while UCC28632DR offers greater flexibility in FET selection and frequency tuning at the expense of integration and BOM simplicity.

Availability

ICE2QR0665GXUMA1 is available at Aetrix Electronics and suitable for adapter/charger, set-top box, Blu-ray/DVD player, and server auxiliary power supply applications requiring stable component supply, long-lifecycle support, and compliance with RoHS, REACH, and halogen-free standards.

Supply support for ICE2QR0665GXUMA1 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 manufacturer specializing in power management, automotive, and industrial control ICs, with leadership in silicon carbide and CoolMOS™ superjunction technologies.

The CoolSET™-Q1 product line targets cost-sensitive, high-efficiency offline SMPS designs where integration of HV MOSFET and QR controller reduces footprint, improves reliability, and accelerates time-to-market for consumer and computing power supplies.

FAQ

What is the purpose of the ZC pin, and how does it affect switching behavior?

The ZC (Zero-Crossing) pin receives a delayed signal from the transformer auxiliary winding and triggers MOSFET turn-on at valley points of drain voltage oscillation. This enables quasi-resonant operation, reducing switching losses and EMI. Internally, ZC voltage also serves as the sensing input for output overvoltage protection via comparison against a fixed threshold.

How does Active Burst Mode achieve sub-100 mW standby power?

Active Burst Mode disables entire switching cycles while maintaining regulation through controlled burst intervals. The FB pin monitors output voltage deviation and determines burst duration and duty cycle. Combined with digital soft-gating and low-quiescent-current internal blocks, this achieves <100 mW no-load consumption without audible transformer noise.

Can ICE2QR0665GXUMA1 operate without an external startup resistor?

Yes. It integrates a dedicated startup cell comprising a high-voltage current source and control logic that pre-charges the VCC capacitor directly from the rectified input bus. This eliminates the need for an external high-voltage startup resistor and associated power loss, improving efficiency and reliability during initial power-up.

What protections are implemented in latch-off versus auto-restart mode?

Latch-off mode responds to adjustable output overvoltage and transformer short-winding faults by disabling the IC until power cycle reset. Auto-restart mode handles VCC over/under-voltage, over-load, and over-temperature events with periodic re-attempts, allowing recovery from transient conditions without manual intervention.

ICE2QR0665GXUMA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: CoolMOS™, CoolSET™-Q1

Package/Case:: 16-SOIC (0.154", 3.90mm Width), 12 Leads

Packaging:: Tape & Reel (TR)

Product Status:: Active

Output Isolation:: Isolated

Internal Switch(s):: Yes

Voltage - Breakdown:: 650V

Topology:: Flyback

Voltage - Start Up:: 18 V

Voltage - Supply (Vcc/Vdd):: 10.5V ~ 27V

Duty Cycle:: 50%

Frequency - Switching:: 52kHz

Power (Watts):: 79 W

Fault Protection:: Current Limiting, Over Load, Over Temperature, Over Voltage

Control Features:: -

Operating Temperature:: -40°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Supplier Device Package:: PG-DSO-12-10

Mounting Type:: Surface Mount

ICE2QR0665GXUMA1 FAQ

1.How can I place an order for ICE2QR0665GXUMA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for ICE2QR0665GXUMA1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for ICE2QR0665GXUMA1 reliable?

The price and inventory of ICE2QR0665GXUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICE2QR0665GXUMA1 is usually 5 days.

3.What payment methods are accepted for ICE2QR0665GXUMA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICE2QR0665GXUMA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ICE2QR0665GXUMA1?

ICE2QR0665GXUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ICE2QR0665GXUMA1 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for ICE2QR0665GXUMA1?

For technical support, including ICE2QR0665GXUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICE2QR0665GXUMA1 requirements.

6.How does Aetrix verify that ICE2QR0665GXUMA1 is sourced from the original manufacturer or authorized distributors?

All ICE2QR0665GXUMA1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ICE2QR0665GXUMA1 meets industry standards.

7.What is the process for return or replacement of ICE2QR0665GXUMA1?

All ICE2QR0665GXUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with ICE2QR0665GXUMA1, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The ICE2QR0665GXUMA1 part is unused and in its original packaging.

Return procedure for ICE2QR0665GXUMA1:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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