Monolithic Power Systems Inc. MPM82504GBH-0000

Overview

MPM82504GBH-0000 from Monolithic Power Systems is a quad-output, scalable DC/DC power module delivering up to 25A per channel with PMBus 1.3 digital interface, 0.5V–3.3V programmable output voltage, and multi-phase constant-on-time (MCOT) control for ultra-fast transient response in high-density server and FPGA core power applications.

For engineers reviewing the MPM82504GBH-0000 datasheet, MPM82504GBH-0000 pinout, MPM82504GBH-0000 application, or MPM82504GBH-0000 equivalent, key selection criteria include per-channel current capability, parallel scalability to 100A, PMBus telemetry accuracy (±0.5% VOUT), thermal protection thresholds (125°C warn / 150°C fault), and BGA-253L package integration with remote sense per channel.

Technical Context

The MPM82504GBH-0000 implements MPS's proprietary multi-phase constant-on-time (MCOT) control architecture across four independent buck regulators, enabling auto-interleaving and phase shedding via PMBus commands. Each channel supports individual remote sensing (VOSNS+/−) and configurable soft-start (2ms typical).

Its PMBus 1.3 interface provides real-time telemetry readback of VIN, VOUT, IOUT, die temperature, and fault status per channel, alongside full configuration of OCP (27A valley limit), OVP (111–134% VREF), UVP (65–88% VREF), and switching frequency (600–1000kHz).

Key Specifications

Pinout & Package

MPM82504GBH-0000 is housed in a thermally enhanced BGA-253L package (15mm × 30mm × 5.18mm) with 253 solder balls, optimized for high-current PCB routing and thermal dissipation via bottom thermal pad.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad-output, digitally controlled power module applications.

Compared with MPM3695-100 and TPS546D24A, the MPM82504GBH-0000 uniquely delivers four independently configurable, telemetry-enabled 25A rails in one BGA package-reducing design cycle time, PCB area, and validation effort for multi-rail systems where per-rail monitoring and coordinated scaling are essential.

Availability

MPM82504GBH-0000 is available at Aetrix Electronics and suitable for telecom infrastructure, AI accelerator card development, and enterprise SSD production requiring stable component supply with full lifecycle support.

Supply support for MPM82504GBH-0000 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Monolithic Power Systems (MPS) is a fabless semiconductor company specializing in high-performance power management ICs and modules, with over two decades of innovation in DC/DC conversion, motor drivers, and LED lighting solutions.

The MPM82504 product line targets high-density, digitally managed power delivery for datacenter, networking, and AI hardware-designed to replace discrete power stages with fully integrated, PMBus-configurable modules that simplify thermal, layout, and firmware integration.

FAQ

What is the default configuration stored in the NVM of MPM82504GBH-0000?

The -0000 suffix indicates the factory-default non-volatile memory (NVM) configuration: quad-channel mode with 25A per channel, 0.6V feedback reference, 600kHz switching frequency, 2ms soft-start, and standard OVP/UVP thresholds (115% / 79% VREF). All PMBus registers are pre-programmed for immediate operation without host initialization.

Can MPM82504GBH-0000 operate with only two channels enabled?

Yes. Channels can be individually disabled via PMBus command or by pulling the corresponding CTRL pin low. Disabled channels enter ultralow-quiescent-current state (<4mA total), and their VOUT pins remain high-impedance. Remote sense and telemetry remain functional only for enabled channels.

How does the auto-interleaving function work across four channels?

Auto-interleaving is implemented in hardware using internal phase clocks derived from the master channel's switching node. When multiple channels are enabled and configured for parallel operation (via ISUMx and PASS/TAKE connections), the device automatically staggers switching edges by 90°, reducing input/output ripple and improving EMI performance without software intervention.

What thermal derating applies when operating without forced air cooling?

At 25°C ambient with no airflow, the module supports full 25A per channel up to 60°C case temperature. Above 60°C, output current must be linearly reduced to maintain junction temperature ≤125°C, per the θJA = 5.77°C/W rating on a 6-layer evaluation board. Derating curves are provided in Figure 16 of the datasheet.

Is the PMBus address configurable per channel or shared across all four?

Each channel has its own independent PMBus address set via ADDR1–ADDR4 pins. In standalone operation, addresses may differ; in parallel mode, all ADDR pins must be tied to identical resistor values to assign the same address-ensuring unified command broadcast and synchronized response.

Does the module support dynamic voltage scaling (DVS) during operation?

Yes. VOUT can be reprogrammed in-circuit via PMBus WRITE_VOUT command with <100µs latency. The DAC resolution is 2mV/LSB, enabling precise DVS steps (e.g., 0.8V → 0.85V → 0.9V) for FPGA partial reconfiguration or CPU DVFS without power cycle.

What is the minimum recommended input capacitance per channel?

MPS specifies ≥470µF ceramic + bulk capacitance per VINx rail, placed within 5mm of the VIN/GND ball pairs. This ensures sufficient charge reservoir for 25A load steps and maintains input voltage droop <100mV during 10A/µs transients, as validated on the EVM82504-BH-00A reference design.