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

Infineon Technologies ICE3A1565FKLA1

Name: ICE3A1565FKLA1
Brand: Infineon Technologies
SKU: ICE3A1565FKLA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ICE3A1565FKLA1

Manufacturer:: Infineon Technologies

Category:: AC DC Converters, Offline Switches

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

Datasheet:: ICE3A1565FKLA1.pdf

Description:: IC OFFLINE SWITCH FLYBACK 8DIP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

ICE3A1565FKLA1 from Infineon Technologies is a 650V off-line SMPS current-mode controller IC with integrated depletion-mode CoolMOS™ power switch and active-burst-mode operation, delivering 42W input power at 230VAC ±15%, fixed 100kHz switching frequency, and 1.70Ω R_DS(on) at 25°C in PG-DIP-8 package for universal-input AC/DC flyback converters.

For engineers reviewing the ICE3A1565FKLA1 datasheet, ICE3A1565FKLA1 pinout, ICE3A1565FKLA1 application, or ICE3A1565FKLA1 equivalent, this device supports low-standby-power (<100mW) designs, precise peak-current limiting (±5% tolerance), adjustable blanking window for load-jump immunity, and auto-restart protection against overtemperature, overvoltage, overload, and VCC undervoltage.

Technical Context

The ICE3A1565FKLA1 integrates a 650V avalanche-rugged CoolMOS™ transistor with an internal startup cell and current-mode PWM controller. Its oscillator operates at a fixed 100kHz frequency, and the control unit implements active burst mode triggered by feedback voltage level to minimize no-load losses while maintaining immediate response to load transients.

Protection logic uses auto-restart behavior for overtemperature, VCC overvoltage, open-loop, overload, and VCC undervoltage faults. Leading-edge blanking and propagation delay compensation ensure accurate current-sense timing, and the soft-start function is externally adjustable via capacitor on the SoftS pin.

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	100kHz - Fixed switching frequency simplifies EMI filter design and transformer sizing for compact flyback topologies.
R_DS(on)	1.70Ω @ 25°C - Determines conduction loss and thermal rise; enables 42W continuous input power rating at 230VAC.
Peak Current Limit Tolerance	±5% - Ensures consistent transformer and secondary diode derating across production lots and temperature range.
Standby Power	<100mW - Achieved via active burst mode; meets stringent energy-efficiency standards (e.g., EU CoC Tier 2, DOE Level VI).
Max Duty Cycle	72% - Sets practical limit for flyback duty ratio under low-line conditions, constraining transformer turns ratio design.
Blanking Window	Adjustable - Prevents false triggering of current-limit protection during high di/dt events like output load steps.

Pinout & Package

ICE3A1565FKLA1 is housed in PG-DIP-8 package with creepage-optimized layout and internal short between pins 4 and 5 (dual drain connection). Pin 6 is not connected.

Pin/Terminal	Circuit Role	Design Meaning
1	SoftS	Soft-start timing capacitor node; controls ramp-up of PWM duty cycle at power-on to limit inrush current.
2	FB	Optocoupler feedback input; regulates output voltage by modulating burst mode entry/exit and duty cycle.
3	CS	Current sense input tied to CoolMOS™ source; detects primary-side peak current for cycle-by-cycle limiting.
4 & 5	Drain	High-voltage drain terminals of integrated CoolMOS™; electrically shorted internally for parallel current handling and thermal distribution.
6	n.c.	No internal connection; must remain unconnected in PCB layout to avoid parasitic coupling or contamination.
7	VCC	Controller supply rail; powered after startup via auxiliary winding; regulated internally to 14.6V typical.
8	GND	Controller ground reference; separate from power ground plane per layout best practice to reduce noise coupling.

Key Features

Feature	Design Value
Integrated 650V CoolMOS™ + controller	Eliminates external HV MOSFET and gate driver, reducing BOM count and layout area in <50W AC/DC adapters.
Active Burst Mode	Delivers <100mW standby power while maintaining real-time load-step response-no "blackout" during light-to-heavy transitions.
Precise peak current limiting (±5%)	Enables consistent transformer design margin and allows smaller secondary rectifier selection without overdesign.
Adjustable blanking window	Prevents false overcurrent trips during transient load surges, improving system reliability in dynamic applications like smart plugs.
Auto-restart protection suite	Covers overtemperature, VCC overvoltage, open-loop, overload, and VCC undervoltage-reduces need for external fault-handling circuitry.

Applications

USB-C PD Adapters

Smart Home Power Supplies

Use Scenario: 20–45W USB-C Power Delivery adapter with universal AC input and tight no-load power requirements.

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

Use Value: Active burst mode achieves <100mW standby power; integrated CoolMOS™ eliminates external HV FET and reduces component count by ≥3.

Use Scenario: 12–24W isolated power supply for Wi-Fi/BLE-enabled smart switches, sensors, and hubs operating in residential environments.

IC Role / Device Role / Timing Role: Off-line SMPS controller managing constant-voltage output with opto-coupled feedback loop stability.

Use Value: Adjustable blanking window prevents nuisance shutdown during wireless radio transmit bursts; auto-restart ensures safe latch-off under fault.

Industrial Control Power Modules

LED Driver Auxiliary Supplies

Use Scenario: 36W auxiliary power supply for PLC I/O modules requiring wide input range (85–265VAC) and long-term reliability.

IC Role / Device Role / Timing Role: Primary-side controller regulating 5V/12V rails with overtemperature and open-loop protection.

Use Value: Integrated 650V CoolMOS™ withstands line surges up to 4kV; ±5% current limit tolerance enables predictable transformer saturation margin.

Use Scenario: 15W auxiliary bias supply for constant-current LED drivers in commercial lighting fixtures.

IC Role / Device Role / Timing Role: Isolated flyback controller powering gate drivers and analog sensing circuitry.

Use Value: Fixed 100kHz operation simplifies EMI compliance; soft-start prevents inrush-induced flicker in sensitive dimming circuits.

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
ICE3B1565FKLA1	67kHz switching frequency, same R_DS(on) and power rating; lower EMI but larger magnetics required.	Better suited for cost-sensitive, non-EMI-critical industrial supplies where transformer size is less constrained.	Select when EMI filtering cost dominates board space, and 100kHz timing constraints (e.g., synchronous rectifier drive) are absent.
ICE3A2065FKLA1	0.92Ω R_DS(on), 57W input power rating at 230VAC; identical pinout and feature set.	Supports higher-output-power designs (e.g., 36W+ USB-C PPS) without changing PCB layout or control loop.	Choose for future-proofing or power scalability-same footprint, no redesign needed if output requirement increases.

Compared with ICE3B1565FKLA1, the ICE3A1565FKLA1 offers tighter EMI control via higher frequency and faster transient response; versus ICE3A2065FKLA1, it trades 15W headroom for lower conduction loss sensitivity and reduced thermal stress at nominal load.

Availability

ICE3A1565FKLA1 is available at Aetrix Electronics and suitable for USB-C PD adapters, smart home power supplies, industrial control modules, and LED driver auxiliary supplies requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.

Supply support for ICE3A1565FKLA1 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 manufacturing and quality certification to ISO 9001 and IATF 16949.

The CoolSET™-F3 product line targets cost-optimized, high-efficiency AC/DC offline SMPS designs below 250W, integrating HV power switches and controllers to reduce system complexity and improve time-to-market.

FAQ

What is the maximum continuous output power achievable with ICE3A1565FKLA1 in a standard open-frame design?

The ICE3A1565FKLA1 supports up to 42W continuous input power at 230VAC ±15% under open-frame conditions (T_a=50°C, T_j=125°C, R_thCA=2.7K/W). Real-world output power depends on topology efficiency, transformer design, and heatsinking; typical 5V/3A or 12V/3A flyback implementations deliver 15–18W output with >82% efficiency.

Does ICE3A1565FKLA1 require an external startup resistor?

No. The device integrates a 650V startup cell that draws initial current directly from the rectified AC line through the internal depletion-mode CoolMOS™, eliminating the need for an external high-voltage startup resistor and associated power loss.

How does the adjustable blanking window function, and how is it configured?

The blanking window is set by an external capacitor connected between the SoftS pin and GND. During each switching cycle, the CS signal is ignored for a duration proportional to this capacitance, preventing false overcurrent detection during transformer demagnetization spikes or load-step transients.

Can ICE3A1565FKLA1 be used in continuous conduction mode (CCM) flyback designs?

Yes, though optimized for DCM operation. CCM is supported with appropriate transformer design and loop compensation, but requires careful attention to slope compensation and current-sense timing due to the fixed-frequency current-mode architecture and leading-edge blanking characteristics.

ICE3A1565FKLA1 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:: 100kHz

Power (Watts):: 42 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-DIP-8

Mounting Type:: Through Hole

ICE3A1565FKLA1 FAQ

1.How can I place an order for ICE3A1565FKLA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for ICE3A1565FKLA1 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 ICE3A1565FKLA1 reliable?

The price and inventory of ICE3A1565FKLA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICE3A1565FKLA1 is usually 5 days.

3.What payment methods are accepted for ICE3A1565FKLA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICE3A1565FKLA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ICE3A1565FKLA1?

ICE3A1565FKLA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ICE3A1565FKLA1 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 ICE3A1565FKLA1?

For technical support, including ICE3A1565FKLA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICE3A1565FKLA1 requirements.

6.How does Aetrix verify that ICE3A1565FKLA1 is sourced from the original manufacturer or authorized distributors?

All ICE3A1565FKLA1 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 ICE3A1565FKLA1 meets industry standards.

7.What is the process for return or replacement of ICE3A1565FKLA1?

All ICE3A1565FKLA1 units undergo pre-shipment inspection (PSI). If there is an issue with ICE3A1565FKLA1, 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 ICE3A1565FKLA1 part is unused and in its original packaging.

Return procedure for ICE3A1565FKLA1:

1.Submit a request within 90 days.

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

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