Monolithic Power Systems Inc. MP86962GMJT-Z

Overview

MP86962GMJT-Z from Monolithic Power Systems is an 80A radiation-tolerant Intelli-Phase™ DrMOS power stage integrating half-bridge MOSFETs, gate drivers, current sense (5 µA/A gain), temperature sense (8 mV/°C), and tri-state PWM interface in a TLGA-41 (5mm×6mm) package. It delivers up to 80A continuous output current across 3V–16V input, supports 100kHz–3MHz switching, and enables precise phase-current balancing in multi-phase buck regulators for server core voltage rails.

For engineers reviewing the MP86962GMJT-Z datasheet, MP86962GMJT-Z pinout, MP86962GMJT-Z application, or MP86962GMJT-Z equivalent, key selection criteria include its 80A I_OUT, integrated Accu-Sense™ current monitoring, dual-function TOUT/FLT pin for junction temperature reporting and fault indication, dead time control (2–28 ns), and radiation tolerance for high-reliability computing infrastructure.

Technical Context

The MP86962GMJT-Z implements a monolithic half-bridge architecture with co-packaged high-side and low-side silicon MOSFETs, eliminating external driver parasitics and enabling optimal dead time tuning (2 ns rising / 6–28 ns falling). Its tri-state PWM input directly controls diode emulation mode via middle-voltage detection (1.1–1.8 V), triggering zero-current detection (ZCD)–based LS-FET turn-off during light-load conditions.

Current sensing uses a bidirectional current-source output (IOUT) with ±2% gain accuracy over 20–80A, while the TOUT/FLT pin provides real-time junction temperature feedback (800 mV offset at 25°C) and latched fault reporting (HS OC, OTP >160°C, SW-to-PGND short) via distinct PWM pin resistance signatures (1kΩ, 10kΩ, or 20kΩ to AGND/VDD).

Key Specifications

Pinout & Package

MP86962GMJT-Z uses a TLGA-41 (5mm × 6mm) thermally enhanced land-grid array package with exposed PGND pads on the bottom for low-impedance heat dissipation and EMI control. The package features 41 terminals, including 10 PGND pins, 10 SW pins, 6 VIN pins, and dedicated BST, PHASE, VDRV, VDD, AGND, EN, PWM, IOUT, and TOUT/FLT signals.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar DrMOS power stage applications.

Compared with IR35221 and ISL99390, MP86962GMJT-Z uniquely combines radiation tolerance, tri-state PWM–enabled diode emulation, and single-pin temperature/fault telemetry - making it optimal for mission-critical server and AI accelerator platforms requiring long-term reliability and rich telemetry.

Availability

MP86962GMJT-Z is available at Aetrix Electronics and suitable for server core voltage regulation, AI accelerator GPU power stages, and high-performance graphics card VRMs requiring stable component supply, full traceability, and long-lifecycle support.

Supply support for MP86962GMJT-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, with design centers in the US, China, and Taiwan, and global manufacturing partnerships.

The MP86962 belongs to MPS's Intelli-Phase™ DrMOS product line, engineered specifically for high-current, high-frequency, radiation-resilient DC-DC conversion in next-generation data center and AI compute infrastructure.

FAQ

What is the maximum continuous output current supported by MP86962GMJT-Z?

The MP86962GMJT-Z delivers 80A continuous output current under typical thermal conditions (T_J ≤ 125°C, 2-layer PCB with 2 oz copper). Peak current capability reaches 125A for short durations, limited by internal HS current limit (110A) and thermal shutdown threshold (160°C).

How does the tri-state PWM function enable diode emulation mode?

When the PWM input voltage resides between 1.1 V and 1.8 V for ≥40 ns, the MP86962GMJT-Z disables the high-side FET and activates diode emulation on the low-side FET. This mode remains active until zero-current detection (ZCD) confirms inductor current reversal, minimizing reverse conduction losses during light-load conditions.

Can the IOUT pin be used for closed-loop current monitoring without external amplification?

Yes - the IOUT pin outputs a bidirectional current source (5 µA/A) with ±2% gain accuracy over 20–80A. When terminated with a precision resistor (e.g., 200 Ω to 1.2 V), it generates 0.7–2.1 V output proportional to inductor current, directly compatible with most digital multiphase controllers' analog current-sense inputs.

What fault conditions trigger latched shutdown, and how is recovery performed?

Latched shutdown occurs for three faults: eight consecutive HS over-current events, junction temperature exceeding 160°C, or SW-to-PGND short. Recovery requires toggling the EN pin low-high or recycling VIN/VDD power - no external reset signal is needed.

Is the TLGA-41 package compatible with standard reflow profiles and automated optical inspection (AOI)?

Yes - the TLGA-41 (5mm×6mm) package complies with JEDEC MO-303 standards and supports IPC-7095-compliant reflow profiles. Its top-marked pin-1 identifier and coplanarity ≤0.10 mm enable reliable AOI detection and placement verification in high-volume SMT lines.

Does MP86962GMJT-Z require external bootstrap capacitance, and what value is recommended?

Yes - a 0.1 µF to 0.22 µF ceramic capacitor must be placed between BST and PHASE pins. This capacitor sustains high-side gate drive above VIN during switching transitions and must be located within 1 mm of the pins to minimize loop inductance and prevent gate oscillation.

How is temperature reported on the TOUT/FLT pin, and how does it differ from fault reporting?

In normal operation, TOUT/FLT outputs a voltage proportional to junction temperature (8 mV/°C, 800 mV offset at 25°C). During any fault (HS OC, OTP, SW short), the pin is actively pulled to VDD (3–3.3 V) regardless of temperature - enabling unambiguous fault detection without ambiguity from thermal drift.