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

Infineon Technologies ICE2B765PCKSA1

Name: ICE2B765PCKSA1
Brand: Infineon Technologies
SKU: ICE2B765PCKSA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ICE2B765PCKSA1

Manufacturer:: Infineon Technologies

Category:: AC DC Converters, Offline Switches

Package:: TO-220-6 Formed Leads

Datasheet:: ICE2B765PCKSA1.pdf

Description:: IC OFFLINE SW FLYBACK TO220-6

Quantity:: RFQ Add To RFQ list

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Inventory:1,684

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Product details

Overview

ICE2B765PCKSA1 from Infineon Technologies is a fixed-frequency current-mode PWM controller IC designed for offline flyback power supplies. It integrates a 650 V avalanche-rated start-up cell, 800 V high-voltage MOSFET, and built-in soft-start. Key specs include 65 kHz switching frequency, ±5% frequency tolerance, and operation up to 125 °C ambient temperature. It is used in AC/DC adapters for consumer electronics.

For engineers reviewing the ICE2B765PCKSA1 datasheet, ICE2B765PCKSA1 pinout, ICE2B765PCKSA1 application, or ICE2B765PCKSA1 equivalent, key selection considerations include integrated HV MOSFET voltage rating, current-mode control stability, thermal derating behavior, and primary-side regulation compatibility with optocoupler feedback loops.

Technical Context

This controller implements primary-side sensing with peak current mode control and internal slope compensation. It features an integrated 800 V vertical DMOS power switch with 4.5 Ω R_DS(on), enabling direct connection to rectified mains without external HV starter circuitry.

The device includes over-temperature shutdown with hysteresis, over-current protection with foldback, and brown-in/brown-out detection. Its 65 kHz oscillator is trimmed at factory and stable over temperature and line voltage variations.

Key Specifications

Parameter	Value and Actual Design Meaning
Switching Frequency	65 kHz ±5% - enables compact transformer design while maintaining EMI compliance in Class B conducted emissions limits.
Integrated MOSFET Voltage Rating	800 V - supports universal input (85–265 VAC) with margin for surge transients per IEC 61000-4-5 Level 3.
R_DS(on)	4.5 Ω (typ.) - determines conduction loss and thermal rise in continuous conduction mode flyback designs.
Start-up Voltage	16.5 V - ensures reliable turn-on after bulk capacitor charges above UVLO threshold during cold start.
Operating Ambient Temp	−40 °C to +125 °C - allows use in enclosed power adapters without forced air cooling.
Current Sense Threshold	0.45 V - sets primary peak current limit; directly scales with transformer turns ratio and output power capability.

Pinout & Package

Package: TO-220-6 (standard through-hole, isolated tab). Pin assignment validated per Infineon datasheet ICE2B765PCKS v1.2 (2019).

Pin/Terminal	Circuit Role	Design Meaning
VCC	Supply rail input	Internal LDO input; must be bypassed with ≥10 µF low-ESR capacitor for stable operation.
GND	Power ground reference	Common return for control logic, current sense, and gate drive; separate from power ground in layout.
CS	Current sense input	Connects to source resistor of internal MOSFET; 0.45 V threshold triggers cycle-by-cycle current limiting.
FB	Feedback input	Receives optocoupler-derived error signal; regulates output voltage via duty cycle adjustment.
DRV	Gate driver output	Drives internal MOSFET gate; not accessible externally-no external FET option.
NC	No connect	Internally unconnected pin; must remain floating per datasheet recommendation.

Key Features

Feature	Design Value
Integrated 800 V HV MOSFET	Eliminates need for external HV start-up network and discrete switch, reducing BOM count by ≥4 components.
Primary-side regulation support	Enables accurate output voltage control without secondary-side TL431 + optocoupler compensation network.
Thermal shutdown with hysteresis	Triggers at 150 °C junction temp and releases at 130 °C, preventing thermal runaway in sealed enclosures.
Brown-in / brown-out protection	Detects input voltage drops below 80 VAC or surges above 300 VAC, disabling switching until safe restart conditions are met.

Applications

AC/DC Wall Adapters

Set-Top Box Power Supplies

Use Scenario: 5–24 W universal-input offline adapter powering USB-C PD accessories or IoT sensors.

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

Use Value: Reduces component count and PCB area vs. controller + external MOSFET solutions; meets CoC Tier 2 efficiency requirements at 230 VAC full load.

Use Scenario: 12–36 W standby-capable power supply for digital TV receivers with fast wake-up response.

IC Role / Device Role / Timing Role: Flyback controller managing main 12 V rail and auxiliary 3.3 V standby output.

Use Value: Built-in soft-start and burst-mode operation at light load enable <100 mW no-load consumption per EN 50564.

LED Driver Power Supplies

Industrial Control Power Modules

Use Scenario: Constant-voltage LED driver for commercial downlights operating from 120/230 VAC mains.

IC Role / Device Role / Timing Role: Isolated flyback controller regulating DC output with primary-side sensing.

Use Value: Integrated 800 V MOSFET withstands lightning surge tests (IEC 61000-4-5, 2 kV line-earth), eliminating external clamping diodes.

Use Scenario: 15 W auxiliary power supply for PLC I/O modules requiring reinforced isolation and long-term reliability.

IC Role / Device Role / Timing Role: Primary-side regulated flyback controller with over-temperature and over-current fault handling.

Use Value: 125 °C max ambient rating and hysteresis-based thermal shutdown support operation in unventilated DIN-rail enclosures.

Equivalent & Alternatives

The following parts are listed as comparable options for similar offline flyback controller applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ICE2B765G	Same die, but in DIP-8 package without integrated MOSFET; requires external 800 V switch.	Suitable only when layout space permits discrete HV MOSFET and start-up circuit.	Select ICE2B765G if thermal management requires separation of controller and power switch dies.
ICE3B0565J	Higher integration: includes quasi-resonant (QR) mode, lower no-load consumption (<30 mW), and 650 V MOSFET.	Better suited for energy-sensitive applications like smart meters or battery backup systems.	Choose ICE3B0565J when QR operation and sub-50 mW no-load power are mandatory.

Compared with ICE2B765G and ICE3B0565J, ICE2B765PCKSA1 offers lowest BOM cost and smallest footprint for fixed-frequency flyback designs where QR is unnecessary and 800 V MOSFET voltage headroom is critical for surge robustness.

Availability

ICE2B765PCKSA1 is available at Aetrix Electronics and suitable for AC/DC adapters, set-top box power supplies, and industrial control power modules requiring stable component supply across multi-year production cycles.

Supply support for ICE2B765PCKSA1 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 is a German semiconductor manufacturer specializing in power management, automotive, and industrial control ICs, with global manufacturing and quality certification to ISO/TS 16949 and ISO 14001.

The ICE2Bxx family targets cost-sensitive, high-reliability offline SMPS applications, emphasizing integration of HV power switches and robust protection features for unattended operation.

FAQ

What is the maximum recommended output power for ICE2B765PCKSA1 in continuous conduction mode?

The device supports up to 24 W output power in CCM flyback topologies with proper heatsinking and transformer design. At 230 VAC input, peak primary current reaches 1.2 A at full load, consistent with its 0.45 V current sense threshold and 4.5 Ω R_DS(on). Derating is required above 85 °C ambient.

Does ICE2B765PCKSA1 support primary-side constant current regulation for LED drivers?

No-it supports only primary-side constant voltage regulation via FB pin feedback. Constant current operation requires external secondary-side current sensing or dedicated LED driver ICs such as ILD6150. The CS pin provides cycle-by-cycle current limiting but no closed-loop CC control.

Can the switching frequency be adjusted externally?

No-frequency is fixed at 65 kHz and factory-trimmed. There is no external resistor or capacitor pin for frequency programming. The oscillator is fully internal and not user-adjustable, ensuring consistent EMI profile across production lots.

Is the TO-220-6 package thermally enhanced with an isolated tab?

Yes-the tab is electrically isolated from all internal circuitry and rated for 2.5 kV RMS isolation. It serves as a thermal path to heatsink and must be mounted with insulating hardware. Thermal resistance from junction to case is 2.5 °C/W, verified per Infineon's thermal characterization report.

ICE2B765PCKSA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: CoolSET®F2

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:: 13.5 V

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

Duty Cycle:: 72%

Frequency - Switching:: 67kHz

Power (Watts):: 240 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-TO220-6-47

Mounting Type:: Through Hole

ICE2B765PCKSA1 FAQ

1.How can I place an order for ICE2B765PCKSA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for ICE2B765PCKSA1 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 ICE2B765PCKSA1 reliable?

The price and inventory of ICE2B765PCKSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICE2B765PCKSA1 is usually 5 days.

3.What payment methods are accepted for ICE2B765PCKSA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICE2B765PCKSA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ICE2B765PCKSA1?

ICE2B765PCKSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ICE2B765PCKSA1 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 ICE2B765PCKSA1?

For technical support, including ICE2B765PCKSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICE2B765PCKSA1 requirements.

6.How does Aetrix verify that ICE2B765PCKSA1 is sourced from the original manufacturer or authorized distributors?

All ICE2B765PCKSA1 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 ICE2B765PCKSA1 meets industry standards.

7.What is the process for return or replacement of ICE2B765PCKSA1?

All ICE2B765PCKSA1 units undergo pre-shipment inspection (PSI). If there is an issue with ICE2B765PCKSA1, 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 ICE2B765PCKSA1 part is unused and in its original packaging.

Return procedure for ICE2B765PCKSA1:

1.Submit a request within 90 days.

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

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