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Offline Regulators | FSDM0465RB

650V Integrated Power Switch for 48Watt offline flyback converters

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Overview

The FSDM0465RB is an integrated Pulse Width Modulator (PWM) and SenseFET specifically designed for high performance offline Switch Mode Power Supplies (SMPS) with minimal external components. This device is an integrated high voltage power switching regulator which combines a rugged avalanche, SenseFET with a current mode PWM control block. The PWM controller includes integrated fixed frequency oscillator, under voltage lockout, leading edge blanking (LEB), optimized gate driver, internal soft start, temperature compensated precise current sources for a loop compensation and self protection circuitry. Compared with a discrete MOSFET and PWM controller solution, the PWM/FSDMRB can reduce total cost, component count, size and weight, while simultaneously increasing efficiency, productivity, and system reliability. This device provides a basic platform well suited for cost-effective designs of flyback converters.

  • Internal Avalanche Rugged SenseFET
  • Advanced Burst-Mode Operation Consumes Under One W at 240VAC&0.5W Load
  • Precision Fixed Operating Frequency (66kHz)
  • Internal Start-up Circuit
  • Improved Pulse by Pulse Current Limiting
  • Over Voltage Protection (OVP): Auto-Restart
  • Over Load Protection (OLP): Auto-Restart
  • Internal Thermal Shutdown (TSD): Auto-Restart
  • Under Voltage Lock Out (UVLO) with Hysteresis
  • Low Operating Current (2.5mA)
  • Built-in Soft Start

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FSDM0465RBWDTU

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TO-220-6

340BG

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400

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2.2

650

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