MP2935

NRFND
4-Phase PWM Controller for VR12.5 Applications


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Product Description

MP2935 is a high-efficiency, 4-phase, synchronous, buck-switching PWM controller with an SVID interface for high-performance Intel processors. The multi-phase PWM output signals can be configured for up to 4-phase operation with interleaved switching. MP2935 adopts three-logic-level PWM outputs for enhanced noise immunity and flexible fault management. Depending on the power states set by SVID command, the multi-phase channel can switch between multiphase and single-phase operation. In addition, MP2935 supports programmable load-line resistance. As a result, the output voltage is always optimally positioned for a load transient. The chip also provides accurate and reliable short-circuit protection with adjustable current limit threshold and a delayed VR_RDY output that is masked during on-the-fly output voltage changes to eliminate false triggering. MP2935 performance is specified over the junction temperature range of -10? to 125?. The chip is available in 40-lead QFN package.

Product Features

  • VR12.5 compliant
  • Multi-Phase Operation at up to 2MHz per Phase
  • Tri-State PWM Outputs for Driving MPS Intelli-PhaseTM Devices
  • Power-Saving Modes Maximize Efficiency During Light Load and Deeper-Sleep Operation
  • Active Current Balancing between Output Phases
  • Independent Current Limit and Load Line Setting Inputs for Additional Design Flexibility
  • 8-bit Digitally Programmable 0V to 3.04V Output through Serial VID Interface
  • Overload and Short-Circuit Protection with Latch-Off Delay
  • Output Current Monitor
  • Fault Latch Output
  • Regulator Temperature Monitor
  • Available in a 6mmx6mm 40-lead QFN package

Parametrics

  • SSExternal
  • Special FeaturesVR12.5
  • GradeCatalog
  • PackageQFN-40 (6x6)
  • VCC (max) (V)5.5
  • fsw (max) (kHz)2000
  • Ishutdown (typ) (mA)0.05
  • Regulated Outputs Phase4
  • VCC (min) (V)4.5
  • Iq (typ) (mA)8
  • fsw (min) (kHz)200