intersil – ISL78268: 55V Buck Controller with Integrated 3A Driver

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The ISL78268 is a 55V synchronous buck controller with 3A integrated high side and low side drivers. The most versatile high voltage buck solution available, the ISL78268 buck controller provides very high step-down efficiency for a wide variety of load currents from under 5A to over 25A, enabling it to support virtually every 12V, 24V, or 48V high current buck requirement for automotive and industrial applications.

FEATURES

  • Supports 5A to 25A loads
  • Two-phase, current sharing configuration for loads up to 50A
  • Provides average current limiting
  • Selectable diode emulation and burst mode for light loads
  • 3μA shutdown current
  • AEC-Q100 qualified
  • Cycle-by-cycle peak current limiting
  • 55V input tolerance (60V abs max)
  • Adaptive dead time control
  • Adjustable switching frequency from 50kHz to 1.1MHz
  • 24-lead 4 x 4mm QFN package
  • 1k MSRP: $2.45 US

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