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Fixed-frequency Integrated Power IC with Built-in Digital Soft Start Optimized for Offline Switch-mode Power Supplies

Fixed-frequency Integrated Power IC
Fixed-frequency Integrated Power IC

Infineon Technologies AG has introduced the new 800 V and 950 V AC-DC integrated power stages (IPS) that are housed in a DIP-7 package and address applications such as auxiliary power supplies for home appliances, AC-DC converters, battery chargers, solar energy systems, and motor control and drives. This FF CoolSET solution combines a PWM controller IC with the latest high voltage CoolMOS™ P7 superjunction (SJ) MOSFETs in a single package and enables both isolated and non-isolated topologies such as flyback or buck. Moreover, these devices operate at switching frequencies of 100 kHz and 65 kHz and minimize the number of components and design complexity.


The frequency reduction mode with soft gate driving and frequency jitter operation offers lower EMI and enhances the efficiency between mid- and light load conditions. The devices also support continuous (CCM) and discontinuous conduction mode (DCM). For low AC line input conditions, CCM operation can achieve lower conduction losses and, thus, a higher efficiency to meet international regulatory standards for energy efficiency. The integrated MOSFET supports an ultra-wide input voltage range commonly associated with single-phase smart metering and industrial applications. In addition, these devices help to optimize the snubber circuitry to further enhance the efficiency and lower the standby power consumption of the converter.


All new devices offer a high level of integration and come with a comprehensive suite of protection features with auto-restart to support the power supply system in failure situations. These protection features, together with the high breakdown voltage of the SJ MOSFET, ensure an increased power supply robustness.



  • Integrated 800 V / 950 V avalanche rugged CoolMOS™

  • Enhanced Active Burst mode with selectable entry and exit standby power

  • Digital frequency reduction for better overall system efficiency

  • Fast startup achieved with cascode configuration

  • DCM and CCM operation with slope compensation

  • Frequency jitter and soft gate driving for low EMI

  • Built-in digital soft start

  • Integrated error amplifier to support direct feedback in non-isolated flyback and buck topologies

  • Comprehensive protection with input line overvoltage, VCC overvoltage, VCC undervoltage, overload, open loop and overtemperature

  • All protections are in auto restart mode

  • Limited charging current for VCC short to GND

  • Pb-free lead plating, halogen-free mold compound, RoHS-compliant



  • Auxiliary power supply for home appliances, white goods, TV, PC and server, smart metering

  • Blu-ray players, set-top boxes, and LCD/LED monitors

Component Datasheet

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