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MAX17559 - Synchronous Step-Down Controller

General Description

The MAX17559 is a dual-output, synchronous step-down controller that drives nMOSFETs.

The device uses a constant-frequency, peak-current-mode architecture.

The two outputs can be configured as independent voltage rails.

Key Features

  • Wide Range of Operation.
  • Wide 4.5V to 60V Input Voltage Range.
  • Wide 0.8V to 24V Output Voltage Range.
  • RSENSE or Inductor DCR Current-Sensing.
  • Fixed 180° Out-of-Phase Operation.
  • Adjustable 100kHz to 2.2MHz Switching Frequency.
  • Independent Enable and PGOOD.
  • Available in a Lead(Pb)-Free 7mm x 7mm, 32-Pin TQFP Package.
  • Enhances Power Efficiency.
  • Low-Impedance Gate Drives for High Efficiency.

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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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MAX17559 EVALUATION KIT AVAILABLE 60V, Dual-Output, Synchronous Step-Down Controller General Description The MAX17559 is a dual-output, synchronous step-down controller that drives nMOSFETs. The device uses a constant-frequency, peak-current-mode architecture. The two outputs can be configured as independent voltage rails. Input capacitor size is minimized by running the two outputs 180° out-of-phase. The IC supports current sensing using either an external current-sense resistor for accuracy or an inductor DCR for improved system efficiency. Current foldback or latchoff limits MOSFET power dissipation under short-circuit conditions. The IC provides independent adjustable soft-start/stop for each output and can start up monotonically into a prebiased output.