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

Infineon Technologies ICE5QR0680AGXUMA1

Name: ICE5QR0680AGXUMA1
Brand: Infineon Technologies
SKU: ICE5QR0680AGXUMA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ICE5QR0680AGXUMA1

Manufacturer:: Infineon Technologies

Category:: AC DC Converters, Offline Switches

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

Datasheet:: ICE5QR0680AGXUMA1.pdf

Description:: IC CTLR QUASI-RES 12SOIC

Quantity:: RFQ Add To RFQ list

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Product details

Overview

ICE5QR0680AGXUMA1 from Infineon is a quasi-resonant 800 V CoolSET™ integrated power IC combining a digital controller and avalanche-rugged CoolMOS™ in a single PG-DSO-12 package. It delivers up to 77 W at 220 VAC ±20% and 42 W across 85–300 VAC, achieves <100 mW standby power via enhanced Active Burst Mode, and features digital frequency reduction up to 10 zero crossings for EMI suppression - deployed in auxiliary power supplies for LED monitors and set-top boxes.

For engineers reviewing the ICE5QR0680AGXUMA1 datasheet, ICE5QR0680AGXUMA1 pinout, ICE5QR0680AGXUMA1 application, or ICE5QR0680AGXUMA1 equivalent, key selection criteria include its 800 V drain rating, 0.71 Ω R_DS(on), 10–25.5 V V_CC operating range, cascode-based fast startup, and integrated line OVP/brownout protection.

Technical Context

This device implements a digitally controlled quasi-resonant flyback controller with zero-crossing detection (ZCD) for valley-switching, minimizing switching losses and EMI. Its proprietary digital frequency reduction logic dynamically adjusts switching frequency based on input voltage and load, maintaining optimal efficiency across wide AC input ranges.

The integrated cascode configuration enables rapid V_CC pre-charging during startup, while the dual-function VIN pin simultaneously sets minimum ZC count thresholds for low/high line and provides robust brownout and overvoltage line protection - all without external comparators or timing components.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS Rating	800 V - supports universal AC input (85–300 VAC) with margin for surge transients in off-line SMPS.
R_DS(on)	0.71 Ω - enables high-efficiency operation at 77 W output in open-frame design at 50°C ambient.
V_CC Range	10–25.5 V - accommodates wide bias supply variation and supports direct start-up from rectified AC via ZCD pin.
Standby Power	<100 mW - achieved via selectable-entry Active Burst Mode, meeting stringent energy efficiency standards (e.g., EU CoC Tier 2).
Digital ZC Reduction	Up to 10 zero crossings - reduces audible noise and improves light-load efficiency by limiting minimum frequency drop.
Protection Coverage	Auto-restart for VCC OVP/UVP, overload, output OVP, overtemperature, CS short-to-GND, line OVP & brownout - eliminates need for discrete protection circuitry.

Pinout & Package

ICE5QR0680AGXUMA1 is housed in a PG-DSO-12 (12-pin, exposed pad) surface-mount package with creepage/clearance optimized for reinforced insulation in AC/DC converters.

Pin/Terminal	Circuit Role	Design Meaning
1 GND	Power Ground Reference	Common return path for controller logic, current sense, and gate driver; connects to PCB thermal pad for heat dissipation.
2 VIN	Line Voltage Sensing Input	Monitors rectified AC bus via resistor divider to trigger brownout (<90 V) and OVP (>305 V); sets ZC count threshold.
3 FB	Feedback & Burst Control	Accepts optocoupler signal to regulate output voltage; also selects burst entry/exit thresholds and detects overload/open-loop fault.
4 CS	Primary Current Sense	Connects to shunt resistor; triggers cycle-by-cycle peak current limit and detects CS-to-GND short with auto-restart.
5 VCC	IC Supply Voltage	Powered during startup via ZCD pin; regulated between 10 V (UVLO) and 25.5 V (OVP); internal current limiting prevents damage during VCC short.
6 NC	No Connect	Internally unconnected; must be left floating or tied to GND per layout guidelines to avoid coupling noise.
7 ZCD	Zero-Crossing Detection	Senses transformer secondary voltage for valley switching; enables fast startup by charging VCC capacitor through internal diode during first half-cycle.
8–11 DRAIN	High-Voltage Drain Terminal	Shared connection point for integrated 800 V CoolMOS™ drain; requires minimum copper area (2 oz, single-sided) for thermal management at 77 W.
12 NC	No Connect	Internally unconnected; no routing required; maintain clearance from high-voltage traces.

Key Features

Feature	Design Value
Digital Frequency Reduction	Adjusts switching frequency using up/down counter logic based on real-time ZC count - maintains >75% efficiency at 10% load without audible noise.
Built-in Digital Soft Start	Gradually increases PWM duty cycle over ~50 ms - prevents inrush current and transformer saturation during cold start.
Robust Line Protection	VIN pin integrates programmable brownout (adjustable via resistor divider) and line OVP with 250 µs blanking - avoids false triggering during AC dips/transients.
Active Burst Mode Flexibility	Selectable burst entry/exit power thresholds via FB pin voltage - allows tuning standby consumption between 30–100 mW without changing external components.
Cascode Startup Architecture	ZCD pin drives CoolMOS™ gate directly during startup to charge VCC capacitor - eliminates need for startup resistor and reduces turn-on time to <100 ms.

Applications

LED Monitor Auxiliary Supply

Set-Top Box Standby Power

Use Scenario: Provides isolated 5 V/12 V auxiliary rails for microcontroller, IR receiver, and display logic in 24/7-connected LED monitors.

IC Role / Device Role / Timing Role: Quasi-resonant flyback controller with integrated HV switch - manages primary-side regulation and valley-switching timing via ZCD pin.

Use Value: Achieves <100 mW no-load consumption and passes ENERGY STAR® 8.0 standby requirements without auxiliary winding or linear regulator.

Use Scenario: Powers SoC, memory, and network interface in cable/satellite set-top boxes requiring instant wake-from-standby capability.

IC Role / Device Role / Timing Role: Integrated controller + 800 V MOSFET - handles universal AC input, implements selectable Active Burst Mode for dynamic standby power scaling.

Use Value: Enables <50 mW standby with fast wake-up (<200 ms) due to cascode-driven VCC pre-charge and digital soft-start control.

Home Appliance Control Board

PC/Server Fan Controller Supply

Use Scenario: Supplies 3.3 V/5 V to MCU and sensor interfaces in washing machines, refrigerators, and dishwashers with variable load profiles.

IC Role / Device Role / Timing Role: Primary-side regulated flyback IC - uses VIN pin for brownout detection during motor startup surges and line dips.

Use Value: Maintains stable output during 15% AC sags (brownout) and rejects 500 V line surges (OVP), eliminating system resets in harsh grid environments.

Use Scenario: Generates isolated 12 V rail for brushless DC fan controllers in desktop PCs and server chassis with tight thermal constraints.

IC Role / Device Role / Timing Role: High-efficiency QR controller with 0.71 Ω R_DS(on) - operates at high frequency with minimal conduction loss in compact SMT layout.

Use Value: Delivers 42 W at 300 VAC with <55 °C case temperature rise on 2 oz copper, enabling fan supply integration into dense motherboard layouts.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ICE5QR0680AZXUMA1	DIP-7 package; same 800 V/0.71 Ω specs but higher thermal resistance (R_thJA = 60 K/W vs. 42 K/W); no exposed pad.	Suitable for lower-power designs (<55 W) or through-hole assembly; less effective for high-density SMT layouts.	Select when legacy DIP-7 footprint or manual assembly is required; avoid for >60 W or thermally constrained boards.
ICE5QSAGXUMA1	Fixed-frequency 65 kHz controller with external MOSFET; lacks integrated HV switch, ZCD, and digital frequency reduction.	Requires discrete 800 V MOSFET and external ZCD circuit; supports higher peak power but adds BOM cost and layout complexity.	Choose when design flexibility (e.g., custom MOSFET selection or multi-output topologies) outweighs integration benefits.

Compared with ICE5QR0680AZXUMA1 and ICE5QSAGXUMA1, ICE5QR0680AGXUMA1 offers superior thermal performance and EMI behavior due to its DSO-12 exposed-pad package and proprietary digital ZC reduction - making it optimal for space-constrained, high-efficiency auxiliary supplies where board area and acoustic noise are critical.

Availability

ICE5QR0680AGXUMA1 is available at Aetrix Electronics and suitable for auxiliary power supplies in LED monitors, set-top boxes, home appliance control boards, and PC/server fan controllers requiring stable component supply and long-term industrial availability.

Supply support for ICE5QR0680AGXUMA1 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 manufacturing and quality certification to ISO 9001 and IATF 16949.

The CoolSET™ product line targets highly integrated, high-voltage AC/DC conversion for consumer and industrial auxiliary power - designed to replace discrete controller + MOSFET solutions with reduced BOM count, smaller footprint, and enhanced protection coverage.

FAQ

What is the maximum continuous output power supported by ICE5QR0680AGXUMA1?

At 220 VAC ±20% in an open-frame design with 2 oz copper PCB and T_A = 50°C, ICE5QR0680AGXUMA1 supports up to 77 W. At full universal input (85–300 VAC), the rated output is 42 W. These values assume minimum drain pin copper area and junction temperature ≤125°C; actual power depends on heatsinking, transformer design, and airflow.

How does the VIN pin provide both brownout and line OVP protection?

The VIN pin senses rectified AC bus voltage via an external resistor divider. Internal comparators monitor this voltage against two thresholds: brownout (typically ~90 V) triggers shutdown if sustained below threshold for >250 µs, while line OVP (typically ~305 V) initiates auto-restart protection after blanking. Both functions share the same pin to reduce external components.

Can ICE5QR0680AGXUMA1 operate without an optocoupler?

No - the FB pin requires feedback from a secondary-side optocoupler to regulate output voltage and enable Active Burst Mode entry/exit. The IC does not support primary-side sensing or auxiliary winding feedback; optocoupler-based regulation is mandatory for closed-loop stability and safety isolation compliance.

What is the purpose of the NC pins (6 and 12) in the DSO-12 package?

Pins 6 and 12 are internally unconnected and serve no electrical function. They must remain unconnected on the PCB - neither routed nor tied to GND or any other net. Maintaining clearance around these pins helps prevent parasitic coupling from adjacent high-voltage traces, especially near the DRAIN pins (8–11).

ICE5QR0680AGXUMA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: CoolMOS™, CoolSET™

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:: 800V

Topology:: Flyback

Voltage - Start Up:: 16 V

Voltage - Supply (Vcc/Vdd):: 10V ~ 27V

Duty Cycle:: -

Frequency - Switching:: -

Power (Watts):: 77 W

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

Control Features:: -

Operating Temperature:: -40°C ~ 125°C (TJ)

Grade:: -

Qualification:: -

Supplier Device Package:: PG-DSO-12-21

Mounting Type:: Surface Mount

ICE5QR0680AGXUMA1 FAQ

1.How can I place an order for ICE5QR0680AGXUMA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for ICE5QR0680AGXUMA1 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 ICE5QR0680AGXUMA1 reliable?

The price and inventory of ICE5QR0680AGXUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICE5QR0680AGXUMA1 is usually 5 days.

3.What payment methods are accepted for ICE5QR0680AGXUMA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICE5QR0680AGXUMA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ICE5QR0680AGXUMA1?

ICE5QR0680AGXUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ICE5QR0680AGXUMA1 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 ICE5QR0680AGXUMA1?

For technical support, including ICE5QR0680AGXUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICE5QR0680AGXUMA1 requirements.

6.How does Aetrix verify that ICE5QR0680AGXUMA1 is sourced from the original manufacturer or authorized distributors?

All ICE5QR0680AGXUMA1 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 ICE5QR0680AGXUMA1 meets industry standards.

7.What is the process for return or replacement of ICE5QR0680AGXUMA1?

All ICE5QR0680AGXUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with ICE5QR0680AGXUMA1, 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 ICE5QR0680AGXUMA1 part is unused and in its original packaging.

Return procedure for ICE5QR0680AGXUMA1:

1.Submit a request within 90 days.

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

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