MP2935 0-3.04V 4-Phase PWM Controller QFN40

MP2935 0-3.04V 4-Phase PWM Controller QFN40

MP2935 is a high-efficiency, 4-phase, synchronous, buck-switching PWM controller with an SVID interface for high-performance Intel processors.

Key Specifications

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

Typical Application Circuit

Design Notes

• Rail sequencing order and delay are part of the SoC power-up contract; a wrong order latches the processor even though every rail is in spec.
• In multiphase designs, current balance depends on the loop matching between phases, so keep the layout symmetric.
• Digital interfaces (PMBus, I²C) need pull-ups to the correct rail and a defined state during power-up.
• Thermal design is a system problem here: the PMIC sits next to the load it feeds, so budget the shared copper, not the package alone.

Common Questions