Infineon Technologies ICE2B765P2BKSA1

Overview

ICE2B765P2BKSA1 from Infineon Technologies is an off-line SMPS current mode controller with integrated 650V CoolMOS™ power transistor, designed for high-efficiency AC/DC flyback converters in open-frame 240W applications. It operates at 67kHz switching frequency, delivers ≤130W continuous output at Ta=75°C with R_thCA=2.7K/W, features adjustable peak current limiting (<±5% tolerance), and supports low-power standby mode compliant with European Commission requirements.

For engineers reviewing the ICE2B765P2BKSA1 datasheet, ICE2B765P2BKSA1 pinout, ICE2B765P2BKSA1 application, or ICE2B765P2BKSA1 equivalent, this page provides verified package mapping (PG-TO220-6-47), confirmed thermal performance (T_j=125°C), validated protection architecture (Auto Restart Mode with overload/open-loop/OVP/thermal shutdown), and real-world design meaning for each key specification.

Technical Context

The ICE2B765P2BKSA1 integrates a 650V avalanche-rugged CoolMOS™ transistor with a current-mode PWM controller featuring internal leading edge blanking, propagation delay compensation, and precise peak current sensing via external sense resistor. Its oscillator supports fixed 67kHz operation with frequency reduction to 20–21.5kHz in standby to suppress audible noise.

The protection unit implements Auto Restart Mode triggered by overvoltage (no-load open loop), overload (short-circuit), or thermal shutdown-each initiating a controlled restart cycle. The isolated drain configuration in PG-TO220-6-47 enables direct heatsink mounting without insulation barriers, while the SoftS pin serves dual roles: soft-start timing control and Auto Restart enable/disable.

Key Specifications

Pinout & Package

ICE2B765P2BKSA1 uses the PG-TO220-6-47 package: isolated drain tab for direct heatsink mounting, 6-pin through-hole layout with exposed metal pad for thermal conduction, and creepage-enhanced spacing between primary-side pins.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ICE2B765I, ICE2B765P2BKSA1 offers lower thermal resistance via isolated drain; compared with ICE2A765P2, it trades higher efficiency and reduced EMI at 67kHz against larger magnetic components-making it optimal for thermally constrained, high-reliability 240W systems.

Availability

ICE2B765P2BKSA1 is available at Aetrix Electronics and suitable for industrial power supplies, open-frame AC/DC adapters, and medical auxiliary power systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for ICE2B765P2BKSA1 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.

This part belongs to the CoolSET™-F2 product line-designed specifically for high-efficiency, low-standby-power off-line SMPS applications requiring integrated high-voltage switches and robust protection architecture.

FAQ

What is the maximum continuous output power achievable with ICE2B765P2BKSA1 in an open-frame design?

The ICE2B765P2BKSA1 delivers 130W continuous output power at T_a=75°C with R_thCA=2.7K/W, as specified in the official Infineon datasheet revision 2.10a. This rating assumes proper PCB copper area (≥6 cm²), forced-air cooling not required, and operation within the 85–265VAC input range. Derating applies above 75°C ambient.

Does ICE2B765P2BKSA1 require an external gate driver for the integrated CoolMOS™?

No. The ICE2B765P2BKSA1 integrates a fully self-contained gate driver optimized for its internal 650V CoolMOS™ transistor. No external driver components are needed-the device drives the MOSFET directly from the internal logic, with built-in soft-driving circuitry to reduce EMI and dV/dt stress during switching transitions.

How does the Auto Restart Mode function during an overvoltage fault?

During overvoltage caused by open-loop conditions (e.g., optocoupler failure), the ICE2B765P2BKSA1's protection unit disables the driver, discharges the SoftS capacitor, and initiates a timed restart cycle. After a fixed delay (~1 second), it attempts re-startup-if the fault persists, the cycle repeats indefinitely until the condition clears or power is cycled.

Can the switching frequency be adjusted externally on ICE2B765P2BKSA1?

No. The ICE2B765P2BKSA1 operates at a fixed 67kHz switching frequency determined by internal oscillator circuitry. Frequency adjustment is not supported; however, standby mode automatically reduces frequency to 20–21.5kHz to minimize no-load losses-this behavior is internal and non-configurable.