NCP81274: Multi-Phase Synchronous Buck Controller with Power Saving Mode and PWM VID Interface

The NCP81274 is a multiphase synchronous controller optimized for new generation computing and graphics processors. The device is capable of driving up to 8 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.

Applications
  • GPU and CPU power
  • Power Management for Graphic cards
End Products
  • Desktop Computers
  • Notebook Computers
Data Sheets (1)
Document TitleDocument ID/SizeRevisionRevision Date
8/7/6/5/4/3/2/1 Phase Buck Controller with PWM_VID and I2C InterfaceNCP81274/D (245kB)11Sep, 2016
Package Drawings (1)
Document TitleDocument ID/SizeRevision
QFN40 5x5, 0.4P485CR (58.8kB)C
Order Information
ProductStatusCompliancePackageMSL*ContainerBudgetary Price/Unit
NCP81274MNTXGActivePb-free Halide freeQFN-40485CR1Tape and Reel5000$1.3066
Specifications
ProductTopologyPhasesControl ModeVCC Min (V)VCC Max (V)fSW Typ (kHz)tres Typ (ns)
NCP81274MNTXG
8/7/6/5/4/3/2/1 Phase Buck Controller with PWM_VID and I2C Interface (245kB) NCP81274
QFN40 5x5, 0.4P NCP81276