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NCP81611 Datasheet 4/3/2/1 Multi-phase Buck Controller

Manufacturer: onsemi

Overview: 4/3/2/1 Multi-Phase Buck Controller with PWM_VID and I2C Interface.

General Description

The NCP81611 is a multiphase synchronous controller optimized for new generation computing and graphics processors.

The device is capable of driving up to 4 phases and incorporates differential voltage and phase current sensing, adaptive voltage positioning and PWM_VID interface to provide and accurately regulated power for computer or graphic controllers.

The integrated power saving interface (PSI) allows for the processors to set the controller in one of three modes, i.e.

Key Features

  • Compliant with NVIDIA OVR4i+ Specifications.
  • Supports up to 4 Phases.
  • 2.8 V to 20 V Supply Voltage Range:.
  • 250 kHz to 1.2 MHz Switching Frequency (4 Phase).
  • Power Good Output.
  • Under Voltage Protection (UVP).
  • Over Voltage Protection (OVP).
  • System Over Current Protection (OCP).
  • Per Phase Over Current Limiting (OCL).
  • Startup into Pre.
  • Charged Loads while Avoiding False OVP.
  • Configurable Load L.

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