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

Infineon Technologies ICE3A3065I

Name: ICE3A3065I
Brand: Infineon Technologies
SKU: ICE3A3065I
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ICE3A3065I

Manufacturer:: Infineon Technologies

Category:: AC DC Converters, Offline Switches

Package:: TO-220-6 Formed Leads

Datasheet:: ICE3A3065I.pdf

Description:: IC OFFLINE SWITCH FLYBACK TO220

Quantity:: RFQ Add To RFQ list

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Inventory:3,783

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Product details

Overview

ICE3A3065I from Infineon Technologies is an off-line AC/DC current-mode PWM controller with integrated 650 V depletion-mode CoolMOS™ power transistor and startup cell, designed for high-efficiency flyback SMPS in open-frame adapters and industrial power supplies. It delivers up to 128 W input power at 230 VAC ±15%, operates at fixed 100 kHz switching frequency, features < ±5% peak current limit tolerance, and achieves <100 mW standby power via Active Burst Mode.

For engineers reviewing the ICE3A3065I datasheet, ICE3A3065I pinout, ICE3A3065I application, or ICE3A3065I equivalent, key selection considerations include its integrated high-voltage switch, isolated drain package (PG-TO220-6-46), auto-restart protection suite, adjustable blanking window for load-jump immunity, and precise current sensing for transformer size reduction.

Technical Context

The ICE3A3065I integrates a 650 V avalanche-rugged CoolMOS™ transistor with a current-mode PWM controller featuring internal 67/100 kHz oscillator, leading-edge blanking, and propagation delay compensation. Its control unit implements Active Burst Mode for ultra-low standby power and Auto Restart Mode for overtemperature, overvoltage, overload, open-loop, and VCC undervoltage faults.

It uses a single external current-sense resistor (CS pin) for primary-side regulation, supports user-defined soft-start via SoftS pin, and provides internal PWM latch and gate driver optimized for low EMI. The isolated drain package enables direct heatsinking of the power switch while maintaining galvanic isolation between primary and secondary sides.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	650 V - Enables direct rectified mains operation up to 380 V DC without external HV starter.
f_SW	100 kHz - Fixed switching frequency enabling predictable EMI filter design and transformer sizing.
R_DS(on)	2.10 Ω @ 25°C - Determines conduction loss and thermal rise in continuous conduction mode flyback designs.
Max Input Power	128 W @ 230 VAC ±15% - Specifies maximum continuous power handling in open-frame configuration with external heatsink (R_thCA = 2.7 K/W).
Current Limit Tolerance	< ±5% - Enables accurate, repeatable transformer and snubber design with minimal safety margin overhead.
Standby Power	< 100 mW - Achieved via Active Burst Mode, meeting stringent EU CoC Tier 2 and DOE Level VI requirements.
Duty Cycle Max	72% - Sets upper bound on transformer turns ratio and minimum operating frequency under heavy load.

Pinout & Package

ICE3A3065I is housed in PG-TO220-6-46 (I2Pak) package with isolated drain tab, enabling direct mounting to heatsink without insulation pad. Pin 1 (Drain) is electrically connected to the metal tab for optimal thermal performance and high-voltage isolation.

Pin/Terminal	Circuit Role	Design Meaning
1 Drain	CoolMOS™ high-side switch drain terminal	Connected to primary winding and rectified mains; requires creepage clearance ≥4 mm.
3 CS	Current sense input	Monitors primary current via external shunt; enables cycle-by-cycle peak current limiting.
4 GND	Controller ground reference	Low-noise analog/digital ground return; must be star-connected near CS and FB pins.
5 VCC	Internal supply input	Powered by auxiliary winding; internal UVLO triggers restart below 10.5 V.
6 SoftS	Soft-start timing capacitor connection	Controls ramp-up time of internal reference to prevent inrush current and overshoot.
7 FB	Feedback voltage input	Regulates output via optocoupler; 2.5 V threshold sets closed-loop error amplifier setpoint.

Key Features

Feature	Design Value
Integrated 650 V CoolMOS™ + controller	Reduces BOM count by eliminating external HV MOSFET, gate driver, and startup resistor.
Active Burst Mode	Delivers <100 mW no-load power without output voltage dropout during load transients.
Adjustable blanking window	Prevents false triggering of current limit during high di/dt events (e.g., cold start, step load).
Precise peak current limit (< ±5%)	Enables smaller transformer core and lower-cost secondary rectifier selection.
Auto Restart protection suite	Recovers autonomously from overtemperature, overvoltage, overload, open-loop, and VCC UVLO faults.

Applications

USB-C PD Adapters

Industrial AC/DC Power Supplies

Use Scenario: 65 W USB-C Power Delivery adapter for laptops and monitors operating from universal 85–265 VAC input.

IC Role / Device Role / Timing Role: Primary-side PWM controller and power switch managing flyback topology, feedback regulation, and burst-mode sequencing.

Use Value: Integrated 650 V switch and <100 mW standby meet IEC 62368-1 and ENERGY STAR v3.0 requirements without auxiliary circuitry.

Use Scenario: 100 W open-frame power supply for PLC I/O modules and sensor interfaces in factory automation.

IC Role / Device Role / Timing Role: Off-line SMPS controller providing regulated 24 V DC output with reinforced isolation and wide input range.

Use Value: Isolated drain package (PG-TO220-6-46) allows direct heatsink mounting and meets IPC-2221 creepage requirements for 300 V working voltage.

LED Driver Power Stages

Medical Auxiliary Power Supplies

Use Scenario: Constant-current LED driver for commercial downlights with dimming interface and surge immunity.

IC Role / Device Role / Timing Role: Primary-side regulated flyback controller delivering stable output despite line and load variation.

Use Value: Adjustable blanking window ensures reliable operation during high di/dt events caused by TRIAC dimmer commutation.

Use Scenario: 24 V/2 A auxiliary power supply for patient-monitor front-end circuits requiring low leakage and high reliability.

IC Role / Device Role / Timing Role: Isolated AC/DC converter controller with auto-restart fault management and precise current limiting.

Use Value: < ±5% current limit tolerance enables consistent transformer derating per IEC 60601-1 Clause 15.4.2 for safe single-fault operation.

Equivalent & Alternatives

The following parts are listed as comparable options for similar off-line flyback controller applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ICE3A2565I	Lower R_DS(on) (0.65 Ω vs. 2.10 Ω); 68 W max input power rating at 230 VAC.	Suitable for lower-power adapters (<70 W) where thermal headroom is constrained.	Select when system power requirement is ≤65 W and cost-sensitive thermal design favors smaller heatsink.
ICE3A3565I	Lower R_DS(on) (1.55 Ω); higher 170 W input power rating at 230 VAC.	Targeted at high-power industrial SMPS (>130 W) requiring extended thermal margin.	Choose for systems needing >125 W continuous output with improved efficiency at full load.

Compared with ICE3A2565I and ICE3A3565I, the ICE3A3065I offers optimal balance of conduction loss, thermal capability, and cost for 100–125 W universal-input flyback converters-enabling compact heatsink design without sacrificing burst-mode stability or protection robustness.

Availability

ICE3A3065I is available at Aetrix Electronics and suitable for USB-C PD adapters, industrial AC/DC power supplies, and LED driver power stages requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for ICE3A3065I 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™-F3 product line delivers integrated AC/DC controllers targeting high-efficiency, low-standby-power flyback converters for consumer, industrial, and medical power supplies-emphasizing integration, protection, and thermal robustness.

FAQ

What is the recommended heatsink thermal resistance for ICE3A3065I at full load?

The datasheet specifies R_thCA = 2.7 K/W for 128 W input power at T_a = 50°C and T_j = 125°C. A heatsink with thermal resistance ≤2.5 K/W is recommended for sustained 120 W operation in enclosed environments, using standard TO-220 mounting hardware and thermal interface material.

Does ICE3A3065I require an external startup resistor?

No. ICE3A3065I integrates a 650 V startup cell that draws current directly from the rectified mains via the Drain pin, eliminating the need for an external high-voltage startup resistor and associated power loss.

How does the adjustable blanking window function in practice?

The blanking window is set by an external capacitor on the SoftS pin. During each switching cycle, the current-sense signal is ignored for a programmable duration (typically 200–600 ns), preventing false overcurrent trips caused by transformer leakage inductance spikes or MOSFET turn-on transients.

Can ICE3A3065I operate in discontinuous conduction mode (DCM)?

Yes. The ICE3A3065I supports DCM, CCM, and transition mode via its current-mode control architecture. Its 72% maximum duty cycle and precise peak current sensing allow stable operation across all modes, with DCM preferred for low-power, low-EMI applications like USB chargers.

ICE3A3065I Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: CoolMOS™, CoolSET™F3

Package/Case:: TO-220-6 Formed Leads

Packaging:: Tube

Product Status:: Obsolete

Output Isolation:: Isolated

Internal Switch(s):: Yes

Voltage - Breakdown:: 650V

Topology:: Flyback

Voltage - Start Up:: 15 V

Voltage - Supply (Vcc/Vdd):: 8.5V ~ 21V

Duty Cycle:: 72%

Frequency - Switching:: 100kHz

Power (Watts):: 128 W

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

Control Features:: Soft Start

Operating Temperature:: -25°C ~ 130°C (TJ)

Grade:: -

Qualification:: -

Supplier Device Package:: PG-TO220-6-46

Mounting Type:: Through Hole

ICE3A3065I FAQ

1.How can I place an order for ICE3A3065I through Aetrix?

Please submit a Request for Quotation (RFQ) for ICE3A3065I 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 ICE3A3065I reliable?

The price and inventory of ICE3A3065I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICE3A3065I is usually 5 days.

3.What payment methods are accepted for ICE3A3065I?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICE3A3065I transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ICE3A3065I?

ICE3A3065I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ICE3A3065I 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 ICE3A3065I?

For technical support, including ICE3A3065I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICE3A3065I requirements.

6.How does Aetrix verify that ICE3A3065I is sourced from the original manufacturer or authorized distributors?

All ICE3A3065I 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 ICE3A3065I meets industry standards.

7.What is the process for return or replacement of ICE3A3065I?

All ICE3A3065I units undergo pre-shipment inspection (PSI). If there is an issue with ICE3A3065I, 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 ICE3A3065I part is unused and in its original packaging.

Return procedure for ICE3A3065I:

1.Submit a request within 90 days.

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

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