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

Infineon Technologies ICE3B0565

Name: ICE3B0565
Brand: Infineon Technologies
SKU: ICE3B0565
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ICE3B0565

Manufacturer:: Infineon Technologies

Category:: AC DC Converters, Offline Switches

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

Datasheet:: ICE3B0565.pdf

Description:: IC OFFLINE SWITCH FLYBACK 8DIP

Quantity:: RFQ Add To RFQ list

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Inventory:2,001

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Product details

Overview

ICE3B0565 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-DIP-8 package. It delivers up to 25W input power at 230VAC ±15%, operates at fixed 67kHz switching frequency, features <±5% peak current limit tolerance, and enables <100mW standby power via Active Burst Mode - used in compact open-frame SMPS for consumer adapters and industrial auxiliary supplies.

For engineers reviewing the ICE3B0565 datasheet, ICE3B0565 pinout, ICE3B0565 application, or ICE3B0565 equivalent, key selection considerations include its integrated high-voltage switch, precise current sensing with leading-edge blanking, auto-restart protection suite (overtemperature, overvoltage, open-loop), and soft-start programmability - all critical for reliable low-noise, low-standby flyback designs.

Technical Context

The ICE3B0565 implements a fixed-frequency current-mode control architecture with internal oscillator set to 67kHz, enabling stable regulation across universal AC input (85–265VAC). Its integrated 650V CoolMOS™ transistor eliminates external HV FET requirements while maintaining avalanche ruggedness and <4.70Ω R_DS(on) at 25°C.

Control logic includes adjustable blanking window for load-jump immunity, user-defined soft-start via external capacitor on SoftS pin, and feedback-driven Active Burst Mode that maintains immediate response without output blackout - reducing output voltage ripple to <1% during light-load operation.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	650V - supports direct rectified AC input up to 385VDC without external HV clamp
f_SW	67kHz - fixed frequency enables predictable EMI filtering and transformer design
R_DS(on)	4.70Ω @ 25°C - determines conduction loss and thermal derating in 25W open-frame design
Max Input Power	25W @ 230VAC ±15% - defines usable output power envelope in unheatsinked DIP-8 layout
Current Limit Tolerance	<±5% - ensures consistent transformer sizing and secondary diode rating across production lots
Standby Power	<100mW - achieved via feedback-controlled Active Burst Mode, meeting EU CoC Tier 2
Duty Cycle Max	72% - sets minimum primary turns ratio and peak flux density margin for flyback transformers

Pinout & Package

ICE3B0565 uses the PG-DIP-8 package with creepage-optimized layout and internal short between pins 4 and 5 (dual drain connection). Pin 6 is not connected; pins 4/5 share drain node of the integrated CoolMOS™ transistor.

Pin/Terminal	Circuit Role	Design Meaning
1 (SoftS)	Soft-start timing input	External capacitor sets ramp-up time for V_CC and PWM enable, preventing inrush overshoot
2 (FB)	Optocoupler feedback input	Regulates output voltage by modulating duty cycle based on isolated error signal
3 (CS)	Current sense / CoolMOS™ source	Direct connection to source terminal enables accurate primary-side current limiting without shunt resistor
4 & 5 (Drain)	CoolMOS™ high-side switch drain	Dual-pin configuration improves current sharing and thermal path for integrated 650V transistor
6 (n.c.)	No connection	Internally unconnected; must remain floating per datasheet layout guidelines
7 (V_CC)	Controller supply rail	Powered by auxiliary winding after startup; internal UVLO protects against brownout operation
8 (GND)	Controller ground reference	Common return for CS, FB, SoftS and gate driver - requires low-inductance PCB tie to power ground

Key Features

Feature	Design Value
Integrated 650V CoolMOS™	Eliminates external HV MOSFET and startup resistor, reducing BOM count by ≥4 components
Active Burst Mode	Maintains controller activity during light load, enabling <100mW standby without output dropout
Adjustable blanking window	Prevents false overcurrent triggering during transient load steps, improving reliability in dynamic applications
Auto Restart Protection	System recovers automatically after fault clearance - no manual reset required for OVP, OTP, or open-loop events
Precise peak current limit	<±5% tolerance allows conservative transformer design without safety margin overdesign

Applications

USB-C Wall Adapter

Industrial Auxiliary Supply

Use Scenario: 5V/3A USB-C charging adapter with universal AC input and no heatsink.

IC Role / Device Role / Timing Role: Primary-side PWM controller and power switch in discontinuous conduction mode (DCM) flyback topology.

Use Value: Integrated 650V CoolMOS™ and Active Burst Mode achieve <100mW no-load consumption and meet IEC 62368-1 creepage requirements in DIP-8 footprint.

Use Scenario: 12V/1A auxiliary supply powering PLC I/O modules in factory automation cabinets.

IC Role / Device Role / Timing Role: Isolated flyback controller providing reinforced insulation and robust fault recovery in harsh EMI environments.

Use Value: Auto Restart Mode for overtemperature and open-loop faults ensures continuous operation without system shutdown during ambient temperature excursions.

Smart Home Hub Power

Medical Diagnostic Equipment Aux

Use Scenario: Compact 9V/1.5A power module for Wi-Fi-enabled smart thermostats and lighting controllers.

IC Role / Device Role / Timing Role: Current-mode flyback controller with opto-coupled feedback for tight output regulation under variable wireless load profiles.

Use Value: Adjustable blanking window prevents nuisance tripping during RF-induced current spikes, ensuring stable operation during BLE/Wi-Fi transmission bursts.

Use Scenario: 5V/2A isolated auxiliary supply for microcontroller and sensor subsystems in portable ultrasound units.

IC Role / Device Role / Timing Role: Safety-certified SMPS controller supporting reinforced isolation and low EMI for Class II medical devices.

Use Value: Internal PWM leading-edge blanking and soft driving reduce conducted emissions, easing compliance with IEC 60601-1 EMC requirements.

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
ICE3B0565J	Same PG-DIP-8 package and 67kHz operation, but rated for 12W max input power at 230VAC (vs. 25W)	Targeted at lower-power adapters where thermal margin is less constrained	Select when BOM cost reduction is prioritized over maximum power density
ICE3A0565	Identical R_DS(on) and power rating, but operates at 100kHz instead of 67kHz	Suitable for designs requiring higher switching frequency to shrink transformer size	Choose for space-constrained applications where core loss trade-off favors higher f_SW

Compared with ICE3B0565J, the ICE3B0565 offers +13W input power headroom and tighter thermal margin; versus ICE3A0565, it trades 33kHz lower switching frequency for reduced core loss and EMI filter complexity - favoring cost-sensitive, thermally limited designs.

Availability

ICE3B0565 is available at Aetrix Electronics and suitable for USB-C wall adapters, industrial auxiliary supplies, smart home hub power modules, and medical diagnostic equipment aux supplies requiring stable component supply and long-term lifecycle support.

Supply support for ICE3B0565 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 targets cost-optimized, high-efficiency off-line SMPS designs - integrating HV power switches and controllers to minimize external components in flyback converters for consumer and industrial markets.

FAQ

What is the purpose of the dual Drain pins (4 and 5) on ICE3B0565?

Pins 4 and 5 are internally shorted and serve as the common drain connection for the integrated 650V CoolMOS™ transistor. This dual-pin configuration improves current distribution and thermal dissipation in the PG-DIP-8 package, enhancing reliability under continuous 25W operation without external heatsinking.

How does Active Burst Mode differ from traditional burst mode in ICE3B0565?

Unlike conventional burst modes that disable the controller entirely, ICE3B0565's Active Burst Mode keeps the control circuitry fully operational while reducing switching frequency and duty cycle. This preserves immediate load-step response and limits output voltage ripple to <1%, eliminating visible flicker in LED loads and audible noise in audio-powered systems.

Can ICE3B0565 be used in continuous conduction mode (CCM) flyback designs?

No - ICE3B0565 is optimized for discontinuous conduction mode (DCM) and transition mode (TM) operation. Its 72% maximum duty cycle, fixed 67kHz oscillator, and current-sense architecture lack CCM-specific slope compensation or variable-frequency control needed for stable high-power CCM flyback operation.

What is the role of the SoftS pin, and how is it configured?

The SoftS pin connects to an external capacitor that controls the soft-start ramp time for V_CC and PWM enable. A typical 100nF capacitor yields ~100ms startup delay, preventing transformer saturation and output overshoot during initial power-up - critical for repeatable cold-start behavior in unattended equipment.

ICE3B0565 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: CoolMOS™, CoolSET™F3

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:: 15 V

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

Duty Cycle:: 72%

Frequency - Switching:: 67kHz

Power (Watts):: 25 W

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

Control Features:: Soft Start

Operating Temperature:: -40°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Supplier Device Package:: PG-DIP-8

Mounting Type:: Through Hole

ICE3B0565 FAQ

1.How can I place an order for ICE3B0565 through Aetrix?

Please submit a Request for Quotation (RFQ) for ICE3B0565 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 ICE3B0565 reliable?

The price and inventory of ICE3B0565 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICE3B0565 is usually 5 days.

3.What payment methods are accepted for ICE3B0565?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICE3B0565 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ICE3B0565?

ICE3B0565 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ICE3B0565 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 ICE3B0565?

For technical support, including ICE3B0565 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICE3B0565 requirements.

6.How does Aetrix verify that ICE3B0565 is sourced from the original manufacturer or authorized distributors?

All ICE3B0565 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 ICE3B0565 meets industry standards.

7.What is the process for return or replacement of ICE3B0565?

All ICE3B0565 units undergo pre-shipment inspection (PSI). If there is an issue with ICE3B0565, 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 ICE3B0565 part is unused and in its original packaging.

Return procedure for ICE3B0565:

1.Submit a request within 90 days.

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

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