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TOP414 - Three-terminal DC to DC PWM Switch

Description

The TOPSwitch family implements, with only three terminals, all functions necessary for a DC to DC, converter: high voltage N-channel power MOSFET with controlled turn-on gate driver, voltage mode PWM controller with integrated 120 kHz oscillator, high voltage start-up bias circuit, bandgap derived

Features

  • Auto-restart and cycle by cycle current limiting functions handle both primary and secondary faults.
  • On-chip latching thermal shutdown protects the entire system against overload Highly Versatile.
  • Implements Buck, Boost, Flyback or Forward topology.
  • Easily interfaces with both opto and primary feedback.
  • Supports continuous or discontinuous mode of operation.
  • Specified for operation down to 16 V DC input VIN D.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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TOP412/414 TOPSwitch Family Three-terminal DC to DC PWM Switch Product Highlights Low Cost Replacement for Discrete Switchers • Up to 15 fewer components - cuts cost, increases reliability • Allows for a smaller and lighter solution under 12 mm height, all surface mount components Over 80% Efficiency in Flyback Topology • Built-in start-up and current limit reduce DC losses • Low capacitance MOSFET cuts switching losses • CMOS controller/gate driver consumes only 7 mW • 70% maximum duty cycle minimizes conduction losses Simplifies Design - Reduces Time to Market • Integrated PWM Controller and high power MOSFET • Only one external capacitor needed for compensation, bypass and start-up/auto-restart functions System Level Fault Protection Features • Auto-restart and cycle by cycle current li
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