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TPS543320 - Step-Down Converter

General Description

The TPS543320 is a high-efficiency 18-V, 3-A synchronous buck converter employing an internallycompensated, fixed-frequency Advanced Current Mode control.

It is capable of providing high efficiency while running at a switching frequency up to 2.2 MHz.

Key Features

  • Fixed-frequency, internally-compensated advanced current mode (ACM) control.
  • Integrated 25-mΩ and 13.9-mΩ MOSFETs.
  • Input voltage range: 4 V to 18 V.
  • Output voltage range: 0.5 V to 5.5 V.
  • Three selectable PWM ramp options to optimize the control loop performance.
  • Five selectable switching frequencies: 500 kHz, 750 kHz, 1 MHz, 1.5 MHz, and 2.2 MHz.
  • Synchronizable to an external clock.
  • 0.5-V, ±0.5% voltage reference accuracy o.

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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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www.ti.com TPS543320 SLUSEE1 – DETCEPMSB5E4R32302200 SLUSEE1 – DECEMBER 2020 TPS543320 4-V to 18-V Input, 3-A Synchronous SWIFT™ Step-Down Converter with Internally Compensated Advanced Current Mode Control 1 Features • Fixed-frequency, internally-compensated advanced current mode (ACM) control • Integrated 25-mΩ and 13.9-mΩ MOSFETs • Input voltage range: 4 V to 18 V • Output voltage range: 0.5 V to 5.5 V • Three selectable PWM ramp options to optimize the control loop performance • Five selectable switching frequencies: 500 kHz, 750 kHz, 1 MHz, 1.5 MHz, and 2.2 MHz • Synchronizable to an external clock • 0.5-V, ±0.5% voltage reference accuracy over full temperature range • Selectable soft start times: 0.