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Si9114 - High-Frequency Switchmode Controller

General Description

The Si9114 is a BiC/DMOS current-mode pulse width modulation (PWM) controller IC for high-frequency dc/dc converters.

Single-ended topologies (forward and flyback) can be implemented at frequencies up to 1 MHz.

The oscillator has an internal divide-by-two that limits the duty ratio to 50%.

Key Features

  • 15- to 200-V Input Range.
  • Current-Mode Control.
  • Internal Start-Up Circuit.

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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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Si9114 High-Frequency Switchmode Controller TEMIC Siliconix Features • 15- to 200-V Input Range • Current-Mode Control • Internal Start-Up Circuit Description The Si9114 is a BiC/DMOS current-mode pulse width modulation (PWM) controller IC for high-frequency dc/dc converters. Single-ended topologies (forward and flyback) can be implemented at frequencies up to 1 MHz. The oscillator has an internal divide-by-two that limits the duty ratio to 50%. An oscillator sync output allows converters to be synchronized in phase as well as in frequency, in a master/slave configuration. The output inverter can typicallysource 500rnA and sink 700 rnA. Shoot-through current is all but eliminated to Functional Block Diagram • Latched SHUIDOWN • Soft-Start • 1.