Monolithic Power Systems Inc. MPM54313GBJ-0000-P

Overview

MPM54313GBJ-0000-P from Monolithic Power Systems is a triple-output, fully integrated 3A power module with I²C interface, adaptive constant-on-time (COT) control, and built-in sequencing logic. It delivers three independent 0.4V–5.5V outputs (each up to 3A), supports parallel operation (up to 6A dual-phase or 9A three-phase), and provides real-time telemetry including VOUT, IOUT, and junction temperature - used in FPGA/ASIC core and auxiliary rail power delivery.

For engineers reviewing the MPM54313GBJ-0000-P datasheet, MPM54313GBJ-0000-P pinout, MPM54313GBJ-0000-P application, or MPM54313GBJ-0000-P equivalent, key selection criteria include configurable soft-start timing (2ms per channel), ±1.5% output voltage accuracy across all three rails, I²C-addressable operation (9 options), differential remote sensing per buck, and thermal shutdown at 145°C with 20°C hysteresis.

Technical Context

The MPM54313GBJ-0000-P integrates three synchronous buck regulators with monolithic inductors, adaptive COT control for sub-1µs transient response, and programmable interleaving logic enabling dual-phase (A+B) or tri-phase (A+B+C) operation. Each channel features independent feedback loops with differential remote sense inputs (VSA+/VSA−, etc.) and configurable AVP droop for passive current sharing.

Its digital control layer includes an on-chip 8-bit ADC for telemetry, MTP memory storing default configurations (voltage, sequencing, soft-start), and register-mapped I²C interface (3.4MHz max clock) supporting dynamic voltage scaling, fault logging (OVP/UVP/OCP/thermal), and real-time parameter readback - all operating across −40°C to +125°C junction temperature range.

Key Specifications

Pinout & Package

MPM54313GBJ-0000-P uses a compact BGA package measuring 8mm × 9mm × 2.58mm (100-pin, 0.5mm pitch), optimized for high-density PCB layouts and thermal performance (θ_JA = 16.3°C/W).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar triple-output, I²C-configurable power module applications.

Compared with MPM54303GBJ-0000-P, the MPM54313GBJ-0000-P adds 50% per-rail current headroom and tri-phase AVP, while versus TPS546D24RVFT it eliminates external sequencing hardware and reduces layout area by >65% for three-rail systems.

Availability

MPM54313GBJ-0000-P is available at Aetrix Electronics and suitable for FPGA power supplies, optical transceiver modules, networking switch ASICs, and industrial edge AI accelerators requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.

Supply support for MPM54313GBJ-0000-P 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 20 years of expertise in DC/DC conversion, motor drivers, and battery management.

The MPM54313 belongs to MPS's integrated power module product line, designed specifically for space-constrained, high-reliability applications demanding multi-rail sequencing, telemetry, and robust protection - targeting FPGA, ASIC, and optical infrastructure markets.

FAQ

What is the default I²C slave address for MPM54313GBJ-0000-P?

The default I²C address is 0x60, set when both ADDR1 and ADDR2 pins are left floating. Nine unique addresses (0x60–0x68) are selectable by pulling ADDR1/ADDR2 high, low, or floating - no external resistors needed beyond standard I²C pull-ups.

Can MPM54313GBJ-0000-P operate with only two outputs enabled?

Yes. Each buck channel (A/B/C) can be independently enabled or disabled via I²C register 0x0C (BUCKx_CTRL_REG). Disabling unused channels reduces quiescent current and improves light-load efficiency without affecting enabled rails.

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

Yes. Output voltage for each channel is updated in real time via I²C write to VID registers (0x15–0x17), with typical transition time under 100µs. DVS is supported across the full 0.4V–5.5V range and maintains regulation stability during slew.

How is thermal performance validated in the BGA package?

Thermal resistance values (θ_JA = 16.3°C/W, θ_JB = 1.27°C/W) are measured on MPS's EVM54313-BJ-00A evaluation board - a 4-layer 8.1cm×8.1cm PCB with 2oz copper on top/bottom layers. These values assume no forced airflow and define maximum power dissipation limits.

Is pre-biased start-up guaranteed for all three outputs simultaneously?

Yes. The MPM54313GBJ-0000-P implements monotonic start-up into pre-biased outputs on all three channels. Internal BST refresh and soft-start capacitor charging occur independently per channel, ensuring no reverse current or output collapse during hot-insertion events.

What protection features latch versus auto-recover after fault?

OVP and VIN_OVP latch off until EN cycle or power recycle; UVLO, UVP, OCP, and thermal shutdown auto-recover once fault condition clears. Latch behavior is configurable per channel via STATUS and FAULT registers - allowing system firmware to determine recovery policy.

Can the PG pin be used to sequence downstream power rails?

Yes. PG is asserted only after all enabled channels complete soft-start and stabilize within UV/OV thresholds. Its open-drain output can drive the EN pin of a downstream regulator (with appropriate level-shifting), enabling cascaded power sequencing without external timers.