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

Infineon Technologies ICE3B3565I

Name: ICE3B3565I
Brand: Infineon Technologies
SKU: ICE3B3565I
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ICE3B3565I

Manufacturer:: Infineon Technologies

Category:: AC DC Converters, Offline Switches

Package:: TO-220-6 Formed Leads

Datasheet:: ICE3B3565I.pdf

Description:: IC OFFLINE SWITCH FLYBACK TO220

Quantity:: RFQ Add To RFQ list

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Inventory:2,138

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Product details

Overview

ICE3B3565I from Infineon Technologies is an off-line AC/DC current-mode PWM controller with integrated 650V depletion-mode CoolMOS™ power transistor and startup cell, housed in PG-TO220-6-46 (I2Pak) package. It delivers up to 170W continuous input power at 230VAC ±15%, operates at fixed 67kHz switching frequency, features <±5% peak current limiting tolerance, and supports Active Burst Mode for <100mW standby power.

For engineers reviewing the ICE3B3565I datasheet, ICE3B3565I pinout, ICE3B3565I application, or ICE3B3565I equivalent, key selection criteria include its integrated high-voltage switch, auto-restart protection suite (overtemperature, overvoltage, open-loop, undervoltage), adjustable blanking window for load-jump immunity, and isolated drain package enabling simplified heatsinking in high-power SMPS designs.

Technical Context

The ICE3B3565I integrates a 650V avalanche-rugged CoolMOS™ transistor with a dedicated current-mode PWM controller featuring internal leading-edge blanking and propagation delay compensation. Its control unit implements Active Burst Mode triggered by feedback voltage level, enabling immediate response to load transients without output blackout.

Protection logic uses auto-restart behavior across five fault conditions: VCC overvoltage, VCC undervoltage, overtemperature, overload/open-loop, and overcurrent via CS pin sensing. The 67kHz oscillator provides fixed-frequency operation with soft driving for EMI reduction, while the user-defined soft-start (SoftS pin) controls ramp-up of duty cycle during power-on.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	650V - Enables direct connection to universal AC input (85–265VAC) without external HV startup resistor network.
f_SW	67kHz - Fixed switching frequency simplifies EMI filter design and transformer core selection for 100–170W applications.
R_DS(on)	1.55Ω @ T_j=25°C - Supports 170W max input power at 230VAC with thermal derating to 83W at Ta=50°C, R_thCA=2.7K/W.
Current Limit Tolerance	<±5% - Enables precise transformer and secondary diode sizing, reducing BOM cost and improving efficiency consistency across production lots.
Standby Power	<100mW - Achieved via Active Burst Mode controlled by FB signal, meeting stringent EU CoC Tier 2 and DOE Level VI requirements.
Protection Modes	Auto-restart on VCC OVP/UVP, overtemperature, overload/open-loop, and overcurrent - Eliminates need for external latch or reset circuitry in industrial power supplies.

Pinout & Package

ICE3B3565I uses the PG-TO220-6-46 (I2Pak) package with isolated drain terminal and wide creepage distance for reinforced insulation in high-voltage AC/DC converters. The package features a thermally efficient exposed drain tab for direct heatsink mounting.

Pin/Terminal	Circuit Role	Design Meaning
1 (Drain)	High-voltage power switch drain	650V-rated CoolMOS™ drain node; electrically isolated from package tab for safe heatsinking in primary-side grounded topologies.
3 (CS)	Current sense input	Connects to source resistor for peak-current-mode control; includes internal leading-edge blanking and propagation delay compensation.
4 (GND)	Controller ground reference	Low-noise analog/digital ground return for internal circuitry; separate from power ground path to minimize noise coupling.
5 (VCC)	Controller supply input	Accepts 10.5–25V DC; powers internal logic and gate driver; triggers auto-restart on undervoltage or overvoltage events.
6 (SoftS)	Soft-start timing control	External capacitor sets PWM duty-cycle ramp time during startup, preventing inrush current and transformer saturation.
7 (FB)	Feedback error amplifier input	Receives optocoupler output to regulate output voltage; controls transition into/out of Active Burst Mode based on load condition.

Key Features

Feature	Design Value
Integrated 650V CoolMOS™ + controller	Reduces component count by eliminating external HV MOSFET, gate driver, and startup circuit - cuts PCB area and bill-of-materials cost.
Active Burst Mode	Delivers <100mW no-load consumption while maintaining real-time responsiveness to load steps - avoids output voltage sag during light-to-heavy transitions.
Adjustable blanking window	Prevents false overcurrent triggering during transient load jumps, enabling reliable operation in dynamic industrial motor drives and LED drivers.
Auto-restart protection suite	Self-recovering fault handling for five critical failure modes eliminates need for external supervisor ICs or manual reset circuits.
Isolated drain package	Enables direct heatsink mounting without insulating pads or thermal interface materials - improves thermal resistance and long-term reliability in convection-cooled systems.

Applications

Industrial Motor Drives

LED Street Lighting

Use Scenario: Constant-voltage/constant-current LED driver powering 100–150W street lamps with dimming capability and surge immunity.

IC Role / Device Role / Timing Role: Primary-side PWM controller and power switch regulating output via optocoupled feedback; 67kHz switching enables compact magnetics and low audible noise.

Use Value: Integrated 650V switch withstands 4kV line surges per IEC 61000-4-5; Active Burst Mode ensures compliance with EN 62384 standby power limits.

Use Scenario: Off-line SMPS for outdoor signage requiring high reliability, wide input range, and thermal stability across -40°C to +85°C ambient.

IC Role / Device Role / Timing Role: Current-mode controller managing transformer primary-side regulation; SoftS pin enables controlled inrush limiting during cold start.

Use Value: Isolated drain package allows direct heatsink attachment to aluminum housing - reduces thermal resistance by >2.5K/W versus DIP-8 alternatives.

ATX Auxiliary Power Supplies

Industrial PLC Power Modules

Use Scenario: +5VSB auxiliary rail generation in desktop PC power supplies operating at universal AC input with tight standby power targets.

IC Role / Device Role / Timing Role: Standby power controller delivering regulated 5V at ≤100mW no-load; FB pin directly interfaces with TL431-based feedback loop.

Use Value: Active Burst Mode maintains regulation accuracy (<1% ripple) during burst cycles - avoids brownout detection in motherboard power sequencing.

Use Scenario: DIN-rail mounted 24V/5A industrial power module powering programmable logic controllers with extended temperature and EMC requirements.

IC Role / Device Role / Timing Role: Main power stage controller with auto-restart protection ensuring fail-safe shutdown during overtemperature events in enclosed enclosures.

Use Value: <±5% current limit tolerance enables consistent short-circuit current limiting across temperature - simplifies fuse coordination and system-level safety certification.

Equivalent & Alternatives

The following parts are listed as comparable options for similar off-line SMPS controller with integrated HV MOSFET applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ICE3B3065I	R_DS(on) = 2.10Ω vs. 1.55Ω; 128W/62W max input power rating	Limited to ≤128W continuous input at 230VAC; lower thermal margin in sealed enclosures	Select when 128W output suffices and cost optimization is prioritized over peak power headroom.
ICE3B3565P	Same R_DS(on) and power rating but PG-TO220-6-47 package with non-isolated drain	Requires insulated heatsink mounting; reduced creepage distance limits use in reinforced insulation designs	Select only when isolation requirements are met via board layout or external insulation, not package-level isolation.

Compared with ICE3B3065I and ICE3B3565P, the ICE3B3565I offers optimal balance of 170W capability, isolated drain for simplified thermal management, and full auto-restart protection - making it preferred for high-reliability industrial and outdoor lighting SMPS where thermal robustness and safety certification are critical.

Availability

ICE3B3565I is available at Aetrix Electronics and suitable for industrial motor drives, LED street lighting, ATX auxiliary power supplies, and PLC power modules requiring stable component supply, long lifecycle support, and RoHS-compliant manufacturing.

Supply support for ICE3B3565I 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 was designed specifically for high-efficiency, low-standby-power off-line SMPS in industrial and commercial power supplies - integrating HV power switches and controllers to reduce system size, cost, and design complexity.

FAQ

What is the maximum continuous input power rating for ICE3B3565I at 230VAC?

The ICE3B3565I supports up to 170W maximum continuous input power at 230VAC ±15% under open-frame conditions (Ta=50°C, Tj=125°C, R_thCA=2.7K/W). At Ta=75°C with no heatsink, the derated rating is 83W - confirmed in Table 5 of the Infineon datasheet Version 2.3.

Does ICE3B3565I require an external startup resistor?

No. ICE3B3565I integrates a 650V startup cell that draws current directly from the rectified AC line through the Drain pin, eliminating the need for an external high-voltage startup resistor and associated power loss - a key feature documented in the Product Highlights and Functional Description sections.

How does the adjustable blanking window improve system reliability?

The blanking window, set via external RC network on the SoftS pin, suppresses false overcurrent triggering during high di/dt events like transformer magnetizing inrush or sudden load steps. This prevents unintended entry into Auto Restart Mode, ensuring uninterrupted operation in dynamic applications such as motor drive auxiliary supplies.

Can ICE3B3565I be used in designs requiring reinforced insulation?

Yes. The PG-TO220-6-46 package provides isolated drain construction and wide creepage distance (>8mm between Drain and other pins), satisfying reinforced insulation requirements per IEC 60747-17 and enabling use in Class II, double-insulated AC/DC converters without additional isolation barriers.

ICE3B3565I Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: CoolMOS™, CoolSET™F3

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

Packaging:: Tube

Product Status:: Discontinued at Digi-Key

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:: 67kHz

Power (Watts):: 170 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

ICE3B3565I FAQ

1.How can I place an order for ICE3B3565I through Aetrix?

Please submit a Request for Quotation (RFQ) for ICE3B3565I 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 ICE3B3565I reliable?

The price and inventory of ICE3B3565I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICE3B3565I is usually 5 days.

3.What payment methods are accepted for ICE3B3565I?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICE3B3565I transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ICE3B3565I?

ICE3B3565I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ICE3B3565I 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 ICE3B3565I?

For technical support, including ICE3B3565I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICE3B3565I requirements.

6.How does Aetrix verify that ICE3B3565I is sourced from the original manufacturer or authorized distributors?

All ICE3B3565I 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 ICE3B3565I meets industry standards.

7.What is the process for return or replacement of ICE3B3565I?

All ICE3B3565I units undergo pre-shipment inspection (PSI). If there is an issue with ICE3B3565I, 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 ICE3B3565I part is unused and in its original packaging.

Return procedure for ICE3B3565I:

1.Submit a request within 90 days.

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

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