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

Infineon Technologies ICE2QR1065ZXKLA1

Name: ICE2QR1065ZXKLA1
Brand: Infineon Technologies
SKU: ICE2QR1065ZXKLA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ICE2QR1065ZXKLA1

Manufacturer:: Infineon Technologies

Category:: AC DC Converters, Offline Switches

Package:: 8-DIP (0.300", 7.62mm), 7 Leads

Datasheet:: ICE2QR1065ZXKLA1.pdf

Description:: IC OFFLINE SWITCH FLYBACK 7DIP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

ICE2QR1065ZXKLA1 from Infineon Technologies is a quasi-resonant AC-DC PWM controller IC with integrated 650V CoolMOS® and startup cell in PG-DIP-7 package, designed for off-line SMPS in LCD monitors, DVD/Blu-ray players, and set-top boxes. It delivers 71.6W max input power at 230VAC ±15%, features active burst mode (<100mW no-load standby), digital frequency reduction, and built-in cycle-by-cycle current limiting.

For engineers reviewing the ICE2QR1065ZXKLA1 datasheet, ICE2QR1065ZXKLA1 pinout, ICE2QR1065ZXKLA1 application, or ICE2QR1065ZXKLA1 equivalent, key selection criteria include integrated high-voltage MOSFET ruggedness, zero-crossing–based QR timing control, VCC pre-charge startup behavior, and programmable overvoltage protection via ZC pin.

Technical Context

This device implements peak-current-mode quasi-resonant control using a digital up/down counter synchronized to transformer demagnetization detection at the ZC pin. Switch-on is triggered only after valley detection, reducing EMI and MOSFET voltage stress. The integrated 650V CoolMOS® supports avalanche-rugged operation up to 110°C junction temperature.

It combines analog sensing (CS pin for primary current, FB pin for regulation) with digital functions: soft-start (12ms, 4-step), active burst mode entry/exit logic, and digital frequency reduction scaling from ~65kHz down to ~25kHz as load decreases. Protection includes auto-restart for VCC OVP/UVP, overload, and overtemperature, plus latch-off for output overvoltage and transformer short-winding faults.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	650V - Maximum drain-source blocking voltage; enables direct connection to 85–265VAC rectified bus without external HV starter.
R_DS(on)	0.92Ω @ T_j = 25°C - Low conduction loss enables high-efficiency operation up to 71.6W at 230VAC.
Max Input Power	71.6W @ 230VAC ±15%, T_a = 50°C - Measured maximum continuous input power without heatsink copper area.
Standby Power	<100mW @ no load - Achieved via Active Burst Mode with controllable output ripple and minimal transformer audible noise.
Soft-Start Time	12ms (digital, 4-step) - Gradually increases CS threshold from 0.32V to 1.0V to limit inrush stress on CoolMOS®, diodes, and transformer.
Operating V_CC	8.5V to 25V - Wide supply range accommodates auxiliary winding design variations and ensures stable operation across line/load transients.
ZC Detection	Digital zero-crossing comparator with ringing suppression - Prevents false triggering during transformer ringing; enables precise valley-switching timing.

Pinout & Package

Package: PG-DIP-7 (Plastic Dual-In-Line Package, 7-pin, 0.3 inch width, creepage ≥ 5.5 mm). Lead finish: Pb-free, RoHS compliant.

Pin/Terminal	Circuit Role	Design Meaning
1 ZC	Zero-Crossing Input	Connects to auxiliary winding via RC delay network; triggers MOSFET turn-on at transformer demagnetization valley; also used for output overvoltage detection.
2 FB	Feedback Input	Regulation node for optocoupler feedback loop; controls PWM off-time, digital frequency reduction, burst ratio, and open-loop protection.
3 CS	Current Sense Input	Primary-side current sensing input; enables cycle-by-cycle peak current limiting, foldback correction, and short-winding protection.
4 N.C.	No Connect	Internally unconnected; must remain floating-no external connection permitted.
5 Drain	CoolMOS® Drain Terminal	High-side power switch output; connects directly to rectified AC bus (e.g., C_bus); rated 650V, avalanche rugged.
6 V_CC	Controller Supply	IC power rail supplied by internal startup cell pre-charge and auxiliary winding post-startup; regulated between 8.5V–25V.
7 GND	Power Ground	Common reference for CS, FB, ZC, and internal logic; must be low-inductance connection to source of integrated CoolMOS®.

Key Features

Feature	Design Value
Integrated 650V CoolMOS® + Startup Cell	Eliminates external HV start-up resistor and discrete MOSFET; reduces BOM count and PCB footprint in flyback SMPS.
Quasi-Resonant Valley-Switching	Reduces EMI emissions and switching losses by turning on CoolMOS® at minimum drain voltage; lowers secondary diode reverse recovery stress.
Digital Frequency Reduction	Automatically scales switching frequency downward under light load (e.g., 65kHz → 25kHz), cutting core and switching losses without audible noise.
Active Burst Mode	Disables switching cycles selectively while maintaining tight output regulation and <100mW no-load consumption-meets EU CoC Tier 2 & DOE Level VI.
Comprehensive Protection Suite	Auto-restart for VCC OVP/UVP, overload, and overtemperature; latch-off for output overvoltage and transformer short-winding-enables robust field reliability.

Applications

LCD Monitor Power Supply

DVD/Blu-ray Player SMPS

Use Scenario: 24W–45W flyback converter powering main logic board and backlight inverter.

IC Role / Device Role / Timing Role: Primary-side QR PWM controller with integrated HV switch; regulates output via optocoupler feedback while managing valley detection timing.

Use Value: Enables compact, low-EMI design meeting CISPR-22 Class B without Y-cap or common-mode choke oversizing.

Use Scenario: 15W–30W standby + main rail SMPS supporting disc drive motor, laser diode bias, and video decoding SoC.

IC Role / Device Role / Timing Role: Dual-mode controller operating in QR mode at full load and Active Burst Mode at standby; manages seamless transition between modes.

Use Value: Achieves <100mW no-load consumption while maintaining fast wake-up response and low output ripple during burst intervals.

Set-Top Box AC-DC Adapter

Small Form-Factor TV Auxiliary Supply

Use Scenario: 12W–20W isolated flyback supplying 3.3V/5V/12V rails for tuner, demodulator, and HDMI interface.

IC Role / Device Role / Timing Role: Integrated QR controller with digital soft-start and foldback correction; handles wide input (85–265VAC) and dynamic load steps.

Use Value: Delivers consistent regulation across universal mains input and eliminates need for external current-sense amplifier or timing capacitor.

Use Scenario: 8W–15W auxiliary supply powering microcontroller, IR receiver, and memory in smart TV standby subsystem.

IC Role / Device Role / Timing Role: Low-power QR controller with integrated CoolMOS®; uses ZC pin for both timing and output OVP detection.

Use Value: Reduces component count by combining OVP function with valley detection-no separate OVP circuit or Zener clamp required.

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
ICE2QR0665Z	650V CoolMOS®, R_DS(on) = 1.6Ω, lower power rating (41W @ 230VAC)	Suitable for ≤30W applications; higher conduction loss limits efficiency at >25W loads	Select when cost sensitivity outweighs efficiency needs and output power ≤30W
ICE2QR4765Z	650V CoolMOS®, R_DS(on) = 0.47Ω, higher power rating (105W @ 230VAC)	Requires larger heatsinking; not optimized for sub-50W space-constrained designs	Select for >60W applications where lower R_DS(on) justifies increased die size and thermal management complexity

Compared with ICE2QR0665Z and ICE2QR4765Z, ICE2QR1065ZXKLA1 offers optimal R_DS(on)–power trade-off for 40–70W universal-input flyback converters, balancing conduction loss, thermal footprint, and system-level EMI performance without requiring external HV startup components.

Availability

ICE2QR1065ZXKLA1 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 ICE2QR1065ZXKLA1 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.

This part belongs to the CoolSET®-Q1 product line-Infineon's first-generation integrated quasi-resonant controllers targeting cost-sensitive, high-efficiency off-line SMPS for consumer electronics.

FAQ

What is the purpose of the N.C. pin (Pin 4) on ICE2QR1065ZXKLA1?

Pin 4 is internally not connected and must remain unconnected on the PCB. It serves no electrical function and is reserved for mechanical compatibility within the PG-DIP-7 package family. Connecting it to any net-including ground or VCC-may cause unpredictable behavior or damage due to internal floating node coupling.

How does the ZC pin provide both valley detection and output overvoltage protection?

The ZC pin receives a delayed signal from the transformer auxiliary winding. Internally, it feeds both a zero-crossing detector (for valley-switching timing) and a comparator referenced to a fixed 3.2V threshold. When output overvoltage occurs, the auxiliary winding voltage rises proportionally, causing V_ZC to exceed 3.2V and trigger latch-off protection-no external components required.

Can ICE2QR1065ZXKLA1 operate without an auxiliary winding?

No. The auxiliary winding powers the IC via the VCC pin after startup and provides the ZC signal for quasi-resonant timing. While the integrated startup cell charges VCC initially, sustained operation requires energy transfer from the auxiliary winding. Omitting it causes VCC undervoltage shutdown after soft-start completes.

What is the maximum allowable V_CC voltage before overvoltage protection activates?

V_CC overvoltage protection triggers at 27.5V (typical), initiating auto-restart mode. The IC stops switching, discharges VCC through internal circuitry, and resumes operation once V_CC falls below 22.5V (hysteresis ≈5V). This protects against auxiliary winding regulation failure or transient surges on the VCC rail.

ICE2QR1065ZXKLA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: CoolMOS™, CoolSET™-Q1

Package/Case:: 8-DIP (0.300", 7.62mm), 7 Leads

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):: 41 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-7-1

Mounting Type:: Through Hole

ICE2QR1065ZXKLA1 FAQ

1.How can I place an order for ICE2QR1065ZXKLA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for ICE2QR1065ZXKLA1 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 ICE2QR1065ZXKLA1 reliable?

The price and inventory of ICE2QR1065ZXKLA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICE2QR1065ZXKLA1 is usually 5 days.

3.What payment methods are accepted for ICE2QR1065ZXKLA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICE2QR1065ZXKLA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ICE2QR1065ZXKLA1?

ICE2QR1065ZXKLA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ICE2QR1065ZXKLA1 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 ICE2QR1065ZXKLA1?

For technical support, including ICE2QR1065ZXKLA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICE2QR1065ZXKLA1 requirements.

6.How does Aetrix verify that ICE2QR1065ZXKLA1 is sourced from the original manufacturer or authorized distributors?

All ICE2QR1065ZXKLA1 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 ICE2QR1065ZXKLA1 meets industry standards.

7.What is the process for return or replacement of ICE2QR1065ZXKLA1?

All ICE2QR1065ZXKLA1 units undergo pre-shipment inspection (PSI). If there is an issue with ICE2QR1065ZXKLA1, 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 ICE2QR1065ZXKLA1 part is unused and in its original packaging.

Return procedure for ICE2QR1065ZXKLA1:

1.Submit a request within 90 days.

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

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