Monolithic Power Systems Inc. MP86933GQT-P

Overview

MP86933GQT-P from Monolithic Power Systems is a monolithic half-bridge Intelli-Phase solution integrating gate drivers and internal power MOSFETs in a single FC-TQFN-13 (3mm×3mm) package. It delivers 12A continuous output current, operates from 4.5V to 16V input, supports 100kHz–2MHz switching, and features integrated current/temperature sensing with fault reporting-designed for high-density server VRMs and multi-phase buck regulators.

For engineers reviewing the MP86933GQT-P datasheet, MP86933GQT-P pinout, MP86933GQT-P application, or MP86933GQT-P equivalent, key selection criteria include tri-state PWM compatibility, DrMOS V4.0 compliance, 3ns rising / 8ns falling dead time, ±5A bidirectional current sense accuracy, and OTP-triggered fault latching at 160°C junction temperature.

Technical Context

The MP86933GQT-P implements a synchronous half-bridge topology with integrated high-side and low-side silicon MOSFETs, driver logic, and adaptive dead-time control (3ns rising / 8ns falling). Its tri-state PWM interface enables diode emulation mode without external controllers, while SYNC pin selection allows standby or forced diode-emulation operation.

It integrates analog sensing functions: CS provides 10μA/A bidirectional current sense with ±5μA offset and 0.8–2.0V common-mode range; VTEMP/FLT delivers 10mV/°C temperature sensing (−100mV offset at 25°C) and open-drain fault reporting at 3.3V during over-current (4-cycle latch), over-temperature (>160°C), or SW-to-PGND short events.

Key Specifications

Pinout & Package

MP86933GQT-P uses an FC-TQFN-13 (3mm × 3mm) package with exposed thermal pad for enhanced power dissipation. Pin 1 is marked by index area on top surface; recommended land pattern follows JEDEC MO-220 standard with ≥6 thermal vias under the paddle.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar half-bridge DrMOS applications.

Compared with IR35201MTRPBF and TPS53679RTAT, MP86933GQT-P uniquely combines 12A integration, tri-state PWM, bidirectional current sense, and junction temperature telemetry in a 3×3mm footprint-enabling compact, intelligent, and thermally aware VRMs without external sensing components.

Availability

MP86933GQT-P is available at Aetrix Electronics and suitable for server core voltage regulators, telecom baseband power supplies, and GPU core power modules requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for MP86933GQT-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 analog and power ICs, with design centers in the US, China, and Taiwan, and global manufacturing partnerships.

The MP86933 belongs to MPS's Intelli-Phase™ DrMOS product line, engineered specifically for high-efficiency, high-density, digitally controlled multiphase buck converters in datacenter and AI infrastructure.

FAQ

What is the function of the VTEMP/FLT pin?

VTEMP/FLT serves dual roles: as an analog temperature sensor output (10mV/°C, −100mV offset at 25°C) during normal operation, and as an open-drain fault indicator pulled to 3.3V during over-current, over-temperature (>160°C), or SW-to-PGND short events. It does not require external pull-up for fault reporting.

How does tri-state PWM enable diode emulation mode?

When PWM is held within its tri-state window (1.1–1.9V) for ≥50ns, the high-side FET turns off immediately and the low-side FET remains on until zero-current detection-emulating synchronous rectifier behavior without external control logic. This reduces light-load losses in CCM/DCM transitions.

What is the minimum recommended BST capacitor value?

The BST capacitor must be 0.1µF to 1µF, placed directly between BST and SW pins with minimal trace length. A 0.22µF X7R 0402 ceramic capacitor is commonly used; insufficient capacitance causes high-side gate drive collapse and erratic switching.

Can MP86933GQT-P operate without a controller?

No-it requires an external PWM or digital controller (e.g., TI TPS536xx, Infineon IR352xx) to provide timing signals. The MP86933GQT-P is a driver + FET stage only; it lacks voltage regulation, feedback, or loop compensation circuitry.

What is the purpose of the AGND pin and how should it be connected?

AGND is the dedicated analog ground reference for VCC regulator, CS amplifier, and temperature sensor circuits. It must connect to the main PGND plane at exactly one point-the ground terminal of the VCC decoupling capacitor-to prevent noise coupling from high-current PGND paths into sensitive analog circuits.

Does MP86933GQT-P support multi-phase interleaving?

Yes-its SYNC pin enables synchronization of multiple MP86933GQT-P devices for interleaved operation. When SYNC is driven high, devices operate in phase; when SYNC is tied together and driven by a master clock, interleaving is achieved via external timing control.

What happens during over-current fault and how is it cleared?

After four consecutive high-side over-current events (>25A), the HS-FET latches off and VTEMP/FLT pulls to 3.3V. The fault persists until VIN or VCC is power-cycled; standby mode entry does not reset the latch. Recovery requires full supply recycle-not just toggling SYNC or PWM.