MP2930 4-Phase PWM Controller With 8-Bit DAC code QFN6

MP2930 4-Phase PWM Controller With 8-Bit DAC code QFN6

The MP2930 is a 4-phase, synchronous buck switching regulator controller for regulating microprocessor core voltage.

Key Specifications

Features

• 2-, 3- or 4-phase Operation
• Channel-Current Balancing
• Voltage Droop vs. Load Current
• Precision Resistor or DCR Current Sensing
• 8-Bit ID Input with Selectable Between VR11 and VR10 Code at 6.25mV Per Bit
• Adjustable Switching Frequency
• Over Current Protection
• Over Voltage Protection
• Available in a 40-pin QFN6x6 Package

Typical Application Circuit

Applications

• Power Modules
• Desktop, Server, Core Voltage

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