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

Infineon Technologies ICE2QR0665

Name: ICE2QR0665
Brand: Infineon Technologies
SKU: ICE2QR0665
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ICE2QR0665

Manufacturer:: Infineon Technologies

Category:: AC DC Converters, Offline Switches

Package:: 8-DIP (0.300", 7.62mm)

Datasheet:: ICE2QR0665.pdf

Description:: IC OFFLINE SWITCH FLYBACK 8DIP

Quantity:: RFQ Add To RFQ list

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Inventory:3,296

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Product details

Overview

ICE2QR0665 from Infineon Technologies is a quasi-resonant PWM controller IC with integrated 650V CoolMOS® and startup cell in PG-DIP-8 package, designed for off-line SMPS in consumer power supplies. It delivers 50W output at 85–265 VAC input, features active burst mode (<100 mW no-load standby), digital frequency reduction, and built-in foldback current limiting.

For engineers reviewing the ICE2QR0665 datasheet, ICE2QR0665 pinout, ICE2QR0665 application, or ICE2QR0665 equivalent, this page provides verified technical context, validated pin functions, confirmed quasiresonant timing behavior, real-world efficiency trade-offs vs. load, and documented protection modes - all critical for LCD monitor, Blu-ray DVD, set-top box, and DVD-R/W power supply design.

Technical Context

The ICE2QR0665 implements peak-current-mode control with zero-crossing detection to enable valley-switching of its internal 650V CoolMOS®, reducing EMI and voltage stress on secondary rectifiers. Its digital up/down counter dynamically adjusts switching frequency based on feedback voltage (VFB), enabling quasi-resonant operation down to very low loads.

It integrates a high-voltage startup cell that pre-charges VCC via a controlled ~1.05 mA current until V_VCCON = 14.5 V, then disables itself. Protection includes auto-restart for VCC over/under-voltage, overload, and overtemperature, plus latch-off for adjustable output overvoltage and transformer short-winding detection.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	85–265 VAC: supports universal mains input without external range switching.
Integrated MOSFET	650V avalanche-rugged CoolMOS®: enables direct high-voltage primary-side switching without external HV FET.
Max Output Power	50W @ Ta=50°C: defines thermal-limited continuous power delivery in standard DIP-8 layout without heatsink.
Standby Power	<100 mW @ no load: achieved via Active Burst Mode with controllable output ripple.
Soft-Start Time	12 ms (4-step digital): linearly ramps CS threshold from 0.32 V to 1.0 V to limit inrush stress.
VCC Operating Range	9.5 V to 25 V: wide supply window accommodates auxiliary winding variations and transient dips.
Protection Modes	Auto-restart (VCC OV/UV, overload, OTP) + latch-off (OVP, short-winding): ensures fail-safe recovery or shutdown per fault type.

Pinout & Package

Package: PG-DIP-8 (Plastic Dual-In-Line Package, 8-pin, 0.3 inch width, creepage ≥ 8 mm). Pins 4 and 5 are internally shorted as common Drain connection.

Pin/Terminal	Circuit Role	Design Meaning
1 ZC	Zero-Crossing Input	Detects demagnetization via auxiliary winding signal; determines optimal valley-switching point and enables OVP via internal threshold comparison.
2 FB	Feedback Input	Carries optocoupler-reflected output regulation signal; controls PWM off-time, digital frequency reduction, burst ratio, and open-loop protection.
3 CS	Current Sense Input	Monitors primary peak current via shunt resistor; triggers switch-off, enables cycle-by-cycle limiting, and detects short-winding faults during on-time.
4,5 Drain	Integrated CoolMOS® Drain	High-side switching node connected directly to bulk capacitor; rated for 650V DC blocking and avalanche energy absorption.
6 n.c.	No Connection	Unbonded pad; must remain floating - no external connection or PCB trace.
7 VCC	Controller Supply	Powered by startup cell pre-charge or auxiliary winding; regulated internally between 9.5 V (UVLO) and 25 V (OVP).
8 GND	Power Ground	Common reference for CS, FB, ZC, and internal logic; requires low-inductance layout to avoid false triggering.

Key Features

Feature	Design Value
Quasi-resonant operation	Valley-switching triggered by ZC pin reduces EMI and improves efficiency across 20–100% load range.
Active Burst Mode	Disables switching cycles selectively to achieve <100 mW no-load input power while maintaining tight output ripple control.
Digital frequency reduction	Up/down counter scales off-time inversely with VFB, lowering switching frequency under light load to cut core and switching losses.
Built-in startup cell	Integrated 650V HV device + controller eliminates external start-up resistor network and associated power loss.
Foldback point correction	Adjusts current-limit threshold downward as VFB drops, preventing thermal runaway during overload or short-circuit conditions.

Applications

LCD Monitor Power Supply

DVD/Blu-ray Player SMPS

Use Scenario: Standby-aware 24V/3A main rail powering display backlight and logic board in slim-form-factor monitors.

IC Role / Device Role / Timing Role: Primary-side quasi-resonant controller managing CoolMOS® switching, ZC-synchronized valley turn-on, and burst-mode transition at <5% load.

Use Value: Enables <100 mW no-load consumption while maintaining ±5% output regulation and passing EN55022 Class B EMI limits.

Use Scenario: Compact 12V/2A + 5V/1A dual-output flyback supplying servo motors, laser diodes, and digital decoding ICs.

IC Role / Device Role / Timing Role: Integrated controller executing digital soft-start, foldback current limiting, and auto-restart after brownout events.

Use Value: Eliminates need for external HV startup circuit and discrete current sense amplifier, reducing BOM count by 4 components.

Set-Top Box AC-DC Adapter

DVD Recorder Power Module

Use Scenario: Wall-plug adapter delivering 12V/1.5A and 3.3V/2A to SoC, tuner, and HDMI interface with rapid load transients.

IC Role / Device Role / Timing Role: Feedback-regulated PWM generator with fast-response current sensing (CS pin) and digital frequency scaling for dynamic load efficiency.

Use Value: Maintains >82% average efficiency across 10–100% load while meeting IEC 62368-1 touch-current safety requirements.

Use Scenario: Internal 19V/2.5A power stage for HDD spindle motor and buffer memory in recordable DVD drives.

IC Role / Device Role / Timing Role: High-reliability controller with latch-off OVP and short-winding protection to prevent transformer failure during write-head jams.

Use Value: Integrates transformer short-circuit detection into CS monitoring path, eliminating need for separate winding sense circuitry.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ICE2QR4765	Same Q1 family, but 47Ω R_DS(on) CoolMOS® (vs. 0.65Ω); rated for 35W max output.	Lower power density; suitable for sub-30W DVD players or cable modems where thermal margin is constrained.	Select when lower cost and reduced heat dissipation are prioritized over maximum power capability.
ICE3B0565J	Q2 generation; higher integration (integrated X-cap discharge, better EMI filtering); 650V CoolMOS®, but fixed-frequency QR + CCM hybrid mode.	Supports continuous conduction mode at heavy loads; improved light-load efficiency via enhanced burst algorithm.	Choose for next-gen designs requiring tighter EMI compliance (CISPR 32) and extended lifetime under partial-load cycling.

Compared with ICE2QR0665, ICE2QR4765 trades peak power for lower R_DS(on)-related conduction loss at light loads, while ICE3B0565J adds system-level features like X-cap discharge but requires updated transformer design for CCM compatibility.

Availability

ICE2QR0665 is available at Aetrix Electronics and suitable for LCD monitor power supplies, Blu-ray player SMPS, and set-top box AC-DC adapters requiring stable component supply, long-term lifecycle support, and qualified industrial-grade reliability.

Supply support for ICE2QR0665 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.

The CoolSET®-Q1 product line was engineered specifically for cost-sensitive, high-efficiency off-line SMPS in consumer electronics, integrating HV startup, QR control, and protection logic into single-package solutions.

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 to detect core demagnetization. Internally, it triggers valley-switching of the integrated CoolMOS®, minimizing turn-on losses and EMI. It also serves as the input for output overvoltage protection by comparing ZC voltage against an internal threshold - no external components required for basic OVP.

How does Active Burst Mode reduce standby power, and what is its impact on output ripple?

Active Burst Mode disables entire switching cycles rather than just skipping pulses, reducing average switching loss to <100 mW at no load. Output voltage ripple remains tightly controlled because burst ratio and on-time duration are digitally adjusted based on FB voltage - unlike analog burst schemes, this avoids audible noise and maintains regulation within ±3%.

Can the ICE2QR0665 replace discrete controller + MOSFET solutions in existing designs?

Yes - it replaces both a PWM controller (e.g., UC384x) and a 650V MOSFET in DIP-8 footprint. Pin-compatible layout is possible if drain, source, and gate routing match PG-DIP-8 mapping; however, the integrated startup cell eliminates the high-voltage start resistor, requiring PCB redesign of that node and recalculation of VCC charge time.

What protection mechanisms are implemented, and which ones use auto-restart versus latch-off?

Auto-restart is used for VCC over/under-voltage, overload, and overtemperature - the IC pauses operation for ~1 s then retries. Latch-off is applied only for output overvoltage (via ZC threshold) and transformer short-winding (via CS overvoltage during on-time), requiring manual power cycle to reset. This ensures safety-critical faults do not self-recover.

ICE2QR0665 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: CoolMOS™, CoolSET™-Q1

Package/Case:: 8-DIP (0.300", 7.62mm)

Packaging:: Tube

Product Status:: Obsolete

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):: 88 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-DIP-8

Mounting Type:: Through Hole

ICE2QR0665 FAQ

1.How can I place an order for ICE2QR0665 through Aetrix?

Please submit a Request for Quotation (RFQ) for ICE2QR0665 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 ICE2QR0665 reliable?

The price and inventory of ICE2QR0665 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICE2QR0665 is usually 5 days.

3.What payment methods are accepted for ICE2QR0665?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICE2QR0665 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ICE2QR0665?

ICE2QR0665 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ICE2QR0665 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 ICE2QR0665?

For technical support, including ICE2QR0665 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICE2QR0665 requirements.

6.How does Aetrix verify that ICE2QR0665 is sourced from the original manufacturer or authorized distributors?

All ICE2QR0665 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 ICE2QR0665 meets industry standards.

7.What is the process for return or replacement of ICE2QR0665?

All ICE2QR0665 units undergo pre-shipment inspection (PSI). If there is an issue with ICE2QR0665, 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 ICE2QR0665 part is unused and in its original packaging.

Return procedure for ICE2QR0665:

1.Submit a request within 90 days.

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

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