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

Infineon Technologies ICE3B1565

Name: ICE3B1565
Brand: Infineon Technologies
SKU: ICE3B1565
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ICE3B1565

Manufacturer:: Infineon Technologies

Category:: AC DC Converters, Offline Switches

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

Datasheet:: ICE3B1565.pdf

Description:: IC OFFLINE SWITCH FLYBACK 8DIP

Quantity:: RFQ Add To RFQ list

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Inventory:14,000

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Product details

Overview

ICE3B1565 from Infineon Technologies is a current-mode off-line SMPS controller integrating a 650V depletion-mode CoolMOS™ power transistor and startup cell in a single PG-DIP-8 package. It delivers 42W 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 - deployed in compact AC/DC adapters and auxiliary power supplies.

For engineers reviewing the ICE3B1565 datasheet, ICE3B1565 pinout, ICE3B1565 application, or ICE3B1565 equivalent, key selection criteria include its integrated 650V CoolMOS™ R_DS(on) of 1.70Ω (T=25°C), Auto Restart protection modes (overtemperature, overvoltage, open-loop, undervoltage), adjustable blanking window, and isolated drain configuration enabling simplified transformer design and reduced component count in flyback converters.

Technical Context

The ICE3B1565 implements a fixed-frequency (67kHz) current-mode PWM control architecture with internal oscillator, leading-edge blanking, and propagation delay compensation to ensure precise peak current sensing. Its integrated CoolMOS™ switch eliminates external high-voltage MOSFET and startup resistor, reducing BOM and layout complexity.

Control logic includes Active Burst Mode triggered by feedback voltage level, enabling immediate load-jump response without output blackout, and Auto Restart Mode for five fault conditions - all implemented via on-chip comparators and state machine without external components.

Key Specifications

Parameter	Value and Actual Design Meaning
Switching Frequency	Fixed 67 kHz - enables predictable EMI filtering and transformer design with stable timing margin.
R_DS(on)	1.70 Ω @ T_j = 25°C - determines conduction loss and thermal derating in 42W continuous input power applications.
Peak Current Limit Tolerance	<±5% - ensures consistent transformer sizing and secondary diode rating across production lots.
Standby Power	<100 mW at no load - meets stringent Energy Star and EU CoC Tier 2 requirements without auxiliary winding or external circuitry.
Startup Cell Voltage Rating	Integrated 650V startup cell - eliminates external high-voltage resistor and enables direct rectified AC line connection.
Max Duty Cycle	72% - sets minimum achievable turns ratio and defines maximum duty-bound transformer design margin.
Blanking Window	Adjustable - prevents false triggering during high di/dt events (e.g., output short recovery), improving system reliability.

Pinout & Package

ICE3B1565 uses the PG-DIP-8 package with creepage-optimized layout and internal shorting between pins 4 and 5 (dual drain connection). Pin 6 is not connected; pins 4/5 serve as the high-side drain node for the integrated CoolMOS™, while pin 3 is the source terminal - enabling direct current-sense resistor placement on the primary ground-referenced side.

Pin/Terminal	Circuit Role	Design Meaning
Pin 1 (SoftS)	Soft-start control input	External capacitor sets ramp-up time for V_CC and PWM duty cycle, preventing inrush current stress on transformer and rectifier.
Pin 2 (FB)	Feedback voltage input	Directly interfaces optocoupler output to regulate output voltage; controls Active Burst Mode entry/exit threshold.
Pin 3 (CS)	Current sense / CoolMOS™ source	Ground-referenced current sensing node; connects to primary-side sense resistor - eliminates need for isolated current transformers.
Pins 4 & 5 (Drain)	CoolMOS™ drain terminals	Dual-drain configuration reduces trace inductance and improves high-frequency switching robustness in DIP-8 layout.
Pin 6 (n.c.)	No connection	Internally unconnected - must remain floating; no PCB trace or pad required.
Pin 7 (V_CC)	Controller supply voltage	Powered after startup; regulated internally from drain node - enables self-biasing without auxiliary winding.
Pin 8 (GND)	Controller ground reference	Common return for CS, FB, SoftS, and internal logic - must be low-inductance connection to primary ground plane.

Key Features

Feature	Design Value
Integrated 650V CoolMOS™ + startup cell	Reduces bill-of-materials by 3–4 components (HV MOSFET, startup resistor, bias winding, rectifier) and simplifies PCB layout.
Active Burst Mode	Delivers <100mW standby power with zero output voltage blackout during load transients - critical for always-on consumer electronics.
Auto Restart protection suite	Five independent fault responses (overtemp, V_CC OV/UV, overload, open loop) - eliminates need for external supervisor IC in cost-sensitive designs.
Adjustable blanking window	Prevents false current-limit triggering during high di/dt events (e.g., output short-circuit recovery), increasing system MTBF.
Internal PWM leading-edge blanking	Compensates for gate-drive propagation delay and noise spikes at switch turn-on - improves current-sense accuracy at light loads.

Applications

Smart Home Power Adapters

Industrial Auxiliary Supplies

Use Scenario: Compact 12V/2A wall adapter powering Wi-Fi routers and smart speakers with strict no-load power limits.

IC Role / Device Role / Timing Role: Primary-side flyback controller with integrated HV switch and burst-mode regulation.

Use Value: Achieves <100mW standby power without auxiliary winding or external HV components - reduces size and cost by 18% vs discrete solutions.

Use Scenario: 24V/0.5A auxiliary supply for PLC I/O modules operating in 55°C ambient industrial enclosures.

IC Role / Device Role / Timing Role: Isolated flyback controller with thermal foldback and auto-restart for unattended operation.

Use Value: Integrated overtemperature protection triggers safe shutdown and automatic recovery - eliminates need for external thermal sensor and latch circuit.

LED Driver Auxiliary Circuits

White Goods Control Power

Use Scenario: 5V/0.3A auxiliary supply for digital dimming controllers in commercial LED troffers.

IC Role / Device Role / Timing Role: Constant-voltage flyback controller with precise current limit and fast load-step response.

Use Value: Adjustable blanking window prevents false trip during LED string short-circuit events - improves field reliability in high-volume lighting deployments.

Use Scenario: 3.3V/0.8A standby supply for microcontroller and sensor interface in refrigerator main control boards.

IC Role / Device Role / Timing Role: Always-on auxiliary SMPS with V_CC undervoltage lockout and open-loop detection.

Use Value: Auto Restart on V_CC UVLO ensures clean reset of MCU during brown-out - avoids firmware corruption in cyclic power-loss environments.

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
ICE3B1065	Higher R_DS(on) (2.95Ω), lower max input power (32W @ 230VAC)	Suitable for ≤25W adapters; less thermal margin at full load	Select when cost optimization outweighs power density needs and thermal headroom is available.
ICE3B2065	Lower R_DS(on) (0.92Ω), higher max input power (57W @ 230VAC)	Requires larger heatsinking or copper area for same board area; better for 45–55W designs	Choose for future-proofing or higher-output variants where board space allows minor layout revision.

Compared with ICE3B1065, ICE3B1565 offers 30% higher continuous power capability at identical package and pinout; versus ICE3B2065, it provides optimal thermal balance for 40–45W applications without requiring additional PCB copper or heatsink - making it the most cost-effective choice in mid-power AC/DC adapters.

Availability

ICE3B1565 is available at Aetrix Electronics and suitable for smart home adapters, industrial auxiliary supplies, LED driver control circuits, and white goods standby power systems requiring stable component supply and long-term lifecycle support.

Supply support for ICE3B1565 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 electronics, and industrial control ICs, with global R&D and manufacturing infrastructure.

The CoolSET™-F3 product line targets cost-sensitive, high-efficiency off-line SMPS designs - integrating HV power switches and controllers to reduce system size, BOM count, and design cycle time for flyback-based power supplies.

FAQ

What is the maximum continuous input power rating for ICE3B1565 at 230VAC?

The ICE3B1565 delivers up to 42W continuous input power at 230VAC ±15% under open-frame conditions (T_a = 75°C, T_j = 125°C, no external heatsink). This rating assumes proper PCB copper area for thermal dissipation and accounts for both CoolMOS™ conduction losses and controller quiescent consumption.

Does ICE3B1565 require an auxiliary winding for V_CC supply?

No. ICE3B1565 integrates a 650V startup cell that powers the controller directly from the rectified AC line during startup, and transitions to self-supply from the drain node once oscillation begins - eliminating the need for an auxiliary winding, associated rectifier, and filter capacitor.

How does the adjustable blanking window improve system reliability?

The blanking window disables current-sense comparator input for a user-defined duration after each PWM pulse edge, preventing false triggering caused by transformer leakage inductance spikes or layout parasitics during high di/dt events - especially critical during output short-circuit recovery or sudden load steps.

Can ICE3B1565 be used in universal input (85–265VAC) applications?

Yes. ICE3B1565 is specified for 85–265VAC input range. Its integrated 650V CoolMOS™ and startup cell support full-range operation; however, maximum continuous power drops to 20W at 85VAC due to higher RMS current and thermal constraints - design derating must follow Infineon's thermal guidelines.

ICE3B1565 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

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

Packaging:: Bulk

Product Status:: Active

Output Isolation:: Isolated

Internal Switch(s):: Yes

Voltage - Breakdown:: 650V

Topology:: Flyback

Voltage - Start Up:: -

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

Duty Cycle:: 75%

Frequency - Switching:: 67kHz

Power (Watts):: -

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

Control Features:: Soft Start

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

Grade:: -

Qualification:: -

Supplier Device Package:: PG-DIP-8

Mounting Type:: Through Hole

ICE3B1565 FAQ

1.How can I place an order for ICE3B1565 through Aetrix?

Please submit a Request for Quotation (RFQ) for ICE3B1565 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 ICE3B1565 reliable?

The price and inventory of ICE3B1565 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICE3B1565 is usually 5 days.

3.What payment methods are accepted for ICE3B1565?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICE3B1565 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ICE3B1565?

ICE3B1565 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ICE3B1565 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 ICE3B1565?

For technical support, including ICE3B1565 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICE3B1565 requirements.

6.How does Aetrix verify that ICE3B1565 is sourced from the original manufacturer or authorized distributors?

All ICE3B1565 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 ICE3B1565 meets industry standards.

7.What is the process for return or replacement of ICE3B1565?

All ICE3B1565 units undergo pre-shipment inspection (PSI). If there is an issue with ICE3B1565, 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 ICE3B1565 part is unused and in its original packaging.

Return procedure for ICE3B1565:

1.Submit a request within 90 days.

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

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