Monolithic Power Systems Inc. MPM54313GBJ-0000-Z

Overview

MPM54313GBJ-0000-Z from Monolithic Power Systems is a triple-output, fully integrated 3A power module with I²C interface, 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 of VOUT, IOUT, and junction temperature. It is used in FPGA/ASIC core and auxiliary rail power delivery where tight voltage accuracy (±1.5% at 3.3V), ultra-fast transient response (<1µs recovery), and programmable soft-start are required.

For engineers reviewing the MPM54313GBJ-0000-Z datasheet, MPM54313GBJ-0000-Z pinout, MPM54313GBJ-0000-Z application, or MPM54313GBJ-0000-Z equivalent, key selection criteria include I²C-configurable sequencing order, differential remote sensing per channel, active/passive current balancing modes, thermal shutdown at 145°C, and BGA package (8mm × 9mm × 2.58mm) thermal resistance (θJA = 16.3°C/W).

Technical Context

The MPM54313GBJ-0000-Z integrates three synchronous buck regulators with adaptive COT control, enabling sub-1µs load transient recovery and stable operation across 4V–16V input. Each channel features independent feedback (VAS+/VAS−, VBS+/VBS−, VCS+/VCS−), programmable soft-start (2ms typical), and configurable OVP/UVP thresholds (e.g., VOUT UV rising at 85% nominal).

Its I²C interface (up to 3.4MHz) enables real-time readback of output voltage (220 LSB @ 3.3V), output current (24 LSB @ 3A), and die temperature, while MTP memory stores default configurations including power-on sequence, switching frequency (500–1000kHz), and AVP droop settings for passive current sharing.

Key Specifications

Pinout & Package

BGA package: 8mm × 9mm × 2.58mm, 72-pin grid (10×8 with corner pins omitted), MSL Level 3, lead-free/halogen-free RoHS compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MPM54313GBJ-0000-Z, the MPM54303GBJ-0000-Z reduces integration by removing one buck channel and associated pins, while the TPS546D24RVFT trades module-level integration for greater design flexibility and higher single-rail current, at the cost of increased BOM count and layout effort.

Availability

MPM54313GBJ-0000-Z is available at Aetrix Electronics and suitable for FPGA power delivery, optical transceiver modules, networking ASIC supplies, and high-density telecom boards requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across production lots.

Supply support for MPM54313GBJ-0000-Z 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 design centers in the US, China, and Taiwan.

The MPM54313 belongs to MPS's integrated power module product line, engineered for high-density, thermally constrained applications such as AI accelerators, 5G infrastructure, and advanced networking equipment where minimal external components and digital configurability are critical.

FAQ

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

The default I²C address is 0x60. It is set by leaving both ADDR1 and ADDR2 pins floating. Nine unique addresses (0x60–0x68) are available by pulling ADDR1/ADDR2 high, low, or floating - enabling up to nine devices on the same bus without address conflict.

Can MPM54313GBJ-0000-Z operate with pre-biased outputs?

Yes. The device supports monotonic pre-biased start-up: internal bootstrap refresh and soft-start capacitor charging occur even when VOUT is already present, preventing reverse current flow and ensuring controlled ramp-up without undershoot or oscillation.

How does the active voltage positioning (AVP) function work?

AVP generates a programmable output droop proportional to load current, allowing multiple MPM54313 outputs to be paralleled passively. Each channel's feedback reference is lowered by a current-proportional offset, enabling automatic current sharing within ±5% mismatch without current-sense resistors or master-slave signaling.

What protection features are implemented in hardware versus firmware?

Hardware protections include UVLO (2.85–3.25V), thermal shutdown (145°C), OVP (112% VREF), and OCP (3.6A valley limit). Firmware-based protections - such as programmable soft-start, sequencing, and PG assertion timing - are configured via I²C registers and stored in MTP memory.

Is differential remote sensing mandatory for all three outputs?

No. Differential sensing (VX+/VX−) is optional per channel. If not used, connect VX+ directly to the output and tie VX− to local AGND. However, using differential sensing improves regulation accuracy by >0.5% under high-current PCB trace IR drop conditions.

What is the maximum supported I²C clock frequency and timing margin?

The device supports standard (100kHz), fast (400kHz), and high-speed (3.4MHz) I²C modes. At 3.4MHz with 100pF bus capacitance, setup time (tSU_STA) is 160ns and clock low period (tLOW) is 160ns - meeting I²C HS-mode specifications with margin for PCB trace skew and noise.

Does MPM54313GBJ-0000-Z support output discharge during shutdown?

Yes. Output discharge is configurable via DISCHARGE_R_REG (0x0E). When enabled, an internal 10Ω–20Ω resistor (depending on register setting) discharges VOUT to near 0V within ~10ms after disable, preventing residual voltage from interfering with downstream logic or causing latch-up.