Specifications
Architecture
Two-stage 48V delivery: IBC power modules (stage 1) + Intelli-Phase/Intelli-Module (stage 2)
MPC12106-54-0750
4:1 fixed-ratio digital DC/DC 800W module, 3310 W/in3, 24x18x8.6mm
MPC10106-54-0500
8:1 fixed-ratio digital DC/DC 500W module, 2634 W/in3, 24x18x6.4mm
MPC1100C-54
10:1 fixed-ratio digital DC/DC 300W module, 1700 W/in3, 27x18x6.1mm
MPC42013
Regulated 12V digital DC/DC 1300W/1600W quarter-brick open-frame
Input Range
40-60 V (54 V nominal)
Peak Efficiency
Up to 98.1% (MPC12106), 97.8% (MPC10106), 96.7% (MPC1100C)
Intelli-Phase
DrMOS power stages with current/temperature sense and fault reporting, up to 90A continuous
Intelli-Module
Open-frame power modules up to 170A continuous
Parallel Operation
IBC modules parallel to exceed 1 kW
Z-Axis Power Delivery
>10x PDN loss reduction for the >1000A bottom-side vertical power path
Lateral Power Delivery
Top-side VR placement for <1000A loads
Efficiency Gain
48V distribution cuts I2R distribution losses roughly 16x vs legacy 12V
Rack Context
AI accelerator trays exceeding 100 kW per rack
Protections
UVLO, VOUT OVP/UVP, OCP_TDC/SPIKE, OTP; MTP with GUI configuration
Vendor
Monolithic Power Systems (MPS), San Jose, California
Overview
Monolithic Power Systems supplies the 48V power delivery chain for high-density AI data centers. As accelerator trays push past 100 kW per rack, legacy 12V distribution loses efficiency to I2R losses; a 48V bus cuts those distribution losses by roughly 16x, and MPS delivers the converters that make the transition practical.
The architecture is two-stage: intermediate-bus converter (IBC) power modules step 54V down as a fixed ratio, then Intelli-Phase DrMOS stages or open-frame Intelli-Modules regulate at the point of load. The MPC12106 4:1 module reaches 3310 W/in3 and 98.1% peak efficiency, while Z-Axis Power Delivery places regulators on the PCB underside for loads above 1000A with more than a 10x reduction in PDN loss.
Key Benefits
Up to 3310 W/in3 module density for space-constrained trays. Up to 98.1% peak efficiency across the IBC stage. Intelli-Phase and Intelli-Module scale from 90A to 170A continuous. Z-Axis Power Delivery tackles the >1000A vertical power path.
Applications
AI GPU/accelerator server power, 100 kW+ AI racks, OCP-style open compute power shelves, and high-current point-of-load regulation for data-center ASICs.
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