NCP81611: 4/3/2/1 Multi-Phase Buck Controller with PWM_VID and I2C Interface

Description: The NCP81611 is a multiphase synchronous controlle...
  • 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. all phases on, dynamic phases shedding or fixed low phase count mode, to obtain high efficiency in light−load conditions. The dual edge PWM multiphase architecture ensures fast transient response and good dynamic current balance
  • 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)
  • Per Phase Over Current Limiting (OCL)
  • System Over Current Protection (OCP)
  • Over Voltage Protection (OVP)
  • Under Voltage Protection (UVP)
  • Phase−to−Phase Dynamic Current Balancing
  • Current Mode Dual Edge Modulation for Fast Initial Response to Transient Loading
  • Power Saving Interface (PSI)
  • Automatic Phase Shedding with User Settable Thresholds
  • PWM_VID and I2C Control Interface
  • 40 Pin QFN Package (5 x 5 mm Body, 0.4 mm Pitch)
  • Pb−Free and are RoHS Compliant
  • Applications
  • GPU and CPU Power
  • Graphic Cards
  • Desktop, Notebook, Sever systems
  • End Products
  • Graphic Cards
  • Desktop, Notebook, Sever systems
  • Technical Documentation & Design Resources
    Availability and Samples
    NCP81611MNTXG
  • Status: Active
  • Compliance: Pb-free Halide free 
  • Description: 4/3/2/1 Multi-Phase Buck Controller with PWM_VID and I2C Interface
  • Package Type: QFN-40
  • Package Case Outline: 485CR
  • MSL: 1
  • Container Type: REEL
  • Container Qty: 5000
  • Specifications
  • Topology:  
  • Phases:  
  • Control Mode:  
  • VCC Min (V):  
  • VCC Max (V):  
  • fSW Typ (kHz):  
  • Package Type: QFN-40 
  • ON Semiconductor Full Web Site