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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Gate Drivers

Monolithic Power Systems Inc. MPQ6531GVE-AEC1-P

Name: MPQ6531GVE-AEC1-P
Brand: Monolithic Power Systems Inc.
SKU: MPQ6531GVE-AEC1-P
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MPQ6531GVE-AEC1-P

Manufacturer:: Monolithic Power Systems Inc.

Category:: Gate Drivers

Package:: 28-VFQFN Exposed Pad

Datasheet:: MPQ6531GVE-AEC1-P.pdf

Description:: IC GATE DRVR HALF-BRIDGE 28VFQFN

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Product details

Overview

MPQ6531GVE-AEC1-P from Monolithic Power Systems is a three-phase brushless DC motor pre-driver IC designed to drive six external N-channel MOSFETs in half-bridge configuration, supporting input voltages from 5V to 60V, featuring integrated charge pump (11.5V VREG output), bootstrap high-side drivers with trickle-charge for 100% duty cycle operation, and AEC-Q100 Grade 1 qualification for automotive motor control.

For engineers reviewing the MPQ6531GVE-AEC1-P datasheet, MPQ6531GVE-AEC1-P pinout, MPQ6531GVE-AEC1-P application, or MPQ6531GVE-AEC1-P equivalent, key selection criteria include its 0.8A source / 1A sink gate drive capability, programmable dead-time via external resistor (700ns–5.7µs), LSS-based over-current protection threshold (0.5V typical), thermal shutdown at 190°C, and QFN-28 (4mm×5mm) wettable flank package for automotive-grade solder joint inspection.

Technical Context

The MPQ6531GVE-AEC1-P implements a regulated charge pump doubler (110kHz) to generate VREG (~11.5V) for low-side gate drive, while high-side drive relies on bootstrap capacitors replenished by an internal trickle-charge circuit (5µA) enabling continuous conduction. It uses VDS sensing and LSS shunt monitoring for dual-path fault detection - short-circuit protection triggered by OC_REF voltage comparison and over-current protection activated when LSS voltage exceeds 0.5V.

Control logic accepts independent high-side (HA/HB/HC) and low-side (LA/LB/LC) inputs with internal pull-downs, supports adjustable dead-time via DT pin resistor (90ns–5.7µs), and features open-drain nFAULT reporting with latch-reset behavior requiring nSLEEP or VIN UVLO recovery. Sleep mode reduces quiescent current to 1.4µA while disabling all outputs and internal regulators.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	5V to 60V - powers gate drivers directly from battery or DC bus without external LDO; supports 12V/24V/48V automotive systems.
VREG Output Voltage	9.5V to 14V - regulated gate drive supply enabling robust N-MOSFET turn-on even at 5V input; bypassed with ≥10µF ceramic capacitor.
Gate Drive Current	0.8A source / 1A sink - drives high-capacitance MOSFET gates quickly; supports <100ns rise/fall times with appropriate external gate resistors.
Dead-Time Range	90ns to 5.7µs - set by single resistor on DT pin; prevents shoot-through across all three phases simultaneously.
LSS OCP Threshold	0.4V to 0.6V - sets over-current trip point via external shunt resistor; enables precise current limiting (e.g., 10A with 50mΩ).
Thermal Shutdown	190°C junction temperature - protects die during overload or poor heatsinking; auto-recovery after cooldown.
Quiescent Current	1.8mA active / 1.4µA sleep - enables low-power standby in always-on automotive modules like HVAC actuators.

Pinout & Package

MPQ6531GVE-AEC1-P is housed in a thermally enhanced QFN-28 package (4mm × 5mm) with exposed thermal pad and wettable flank edges for automated optical solder inspection - critical for AEC-Q100-compliant automotive production.

Pin/Terminal	Circuit Role	Design Meaning
1 VIN	Main power input	Bypassed with 0.1µF ceramic + bulk capacitance; absolute max 62V transient rating.
5 BSTA / 9 BSTB / 13 BSTC	Bootstrap supply nodes	Connect ceramic capacitor to respective SHA/SHB/SHC; enable high-side gate drive above VIN.
6 SHA / 10 SHB / 14 SHC	High-side source return	Return path for bootstrap capacitor charging; tied to phase leg source nodes.
7 GHA / 11 GHB / 15 GHC	High-side gate drive outputs	Drive N-MOSFET gates; 0.8A source / 1A sink capability per channel.
8 GLA / 12 GLB / 16 GLC	Low-side gate drive outputs	Drive N-MOSFET gates; include passive pull-down (590kΩ) for safe default state.
17 LSS	Current sense input	Monitors low-side shunt voltage; 0.5V threshold triggers OCP latching fault.
18–20 HA/HB/HC	High-side logic inputs	Active-high with internal pulldown; control HS FETs independently of LS signals.
21–23 LA/LB/LC	Low-side logic inputs	Active-high with internal pulldown; enable LS FETs; support trapezoidal commutation.
24 nFAULT	Fault indicator	Open-drain output pulled low during OCP, thermal shutdown, or UVLO; requires external pull-up.
25 nSLEEP	Power management input	Logic-low entry into 1.4µA sleep mode; internal pulldown ensures safe default disable.
27 DT	Dead-time programming	Resistor-to-ground sets dead time (60×R_DT ns); 20kΩ yields ~1.2µs typical.

Key Features

Feature	Design Value
Bootstrap trickle-charge circuit	Maintains high-side gate voltage during 100% duty cycle operation, eliminating need for external charge pumps or complex timing.
Programmable short-circuit protection	VDS sensing compares MOSFET drain-source voltage against OC_REF; configurable trip level (0.125V–2.4V) for varying R_DS(on).
Adjustable dead-time control	Single external resistor on DT pin sets identical dead time across all three phases, simplifying layout and ensuring shoot-through immunity.
AEC-Q100 Grade 1 qualification	Rated for −40°C to +125°C ambient operation with full electrical characterization and reliability testing per automotive stress standards.
Wettable flank QFN package	Enables automated X-ray and AOI inspection of solder joints - mandatory for safety-critical automotive motor control modules.

Applications

Electric Power Steering (EPS)

Automotive HVAC Blower

Use Scenario: High-reliability 3-phase BLDC motor control in steering assist systems requiring fail-safe torque delivery and diagnostic coverage.

IC Role / Device Role / Timing Role: Pre-driver managing gate timing, dead-time, and fault response for external 60V-rated MOSFETs; interfaces with MCU PWM and safety monitor.

Use Value: Integrated VDS and LSS dual-fault detection enables SIL2-compliant diagnostics; 190°C thermal shutdown prevents thermal runaway during jam conditions.

Use Scenario: Variable-speed cabin air blower in passenger vehicles where EMI, efficiency, and acoustic noise must be tightly controlled.

IC Role / Device Role / Timing Role: Gate driver executing trapezoidal commutation with programmable dead-time and smooth PWM transitions to minimize audible switching noise.

Use Value: 0.8A/1A gate drive supports fast MOSFET switching at 20–30kHz PWM, reducing iron losses and improving system efficiency >92% at mid-load.

Brake-by-Wire Actuator

Engine Cooling Fan

Use Scenario: Redundant motor control in electro-hydraulic brake actuators demanding functional safety, rapid fault response, and high-voltage tolerance.

IC Role / Device Role / Timing Role: Pre-driver with latched fault reporting (nFAULT) and reset-only recovery via nSLEEP, meeting ASIL-C diagnostic requirements.

Use Value: 3µs OCP deglitch time rejects switching transients while preserving fast fault detection; AEC-Q100 Grade 1 ensures lifetime reliability under vibration and thermal cycling.

Use Scenario: Radiator cooling fan in ICE and hybrid vehicles operating across wide battery voltage range (9V–16V) and ambient temperatures (−40°C to +105°C).

IC Role / Device Role / Timing Role: High-voltage pre-driver enabling direct connection to vehicle battery; supports regenerative braking energy recirculation via body diode conduction.

Use Value: 5V–60V input range accommodates cold-crank (6.5V) and load-dump (60V) transients; UVLO hysteresis (200mV) prevents chatter during brown-out conditions.

Equivalent & Alternatives

The following parts are listed as comparable options for similar three-phase BLDC pre-driver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
DRV8305-Q1	Integrated current sense amplifiers and SPI interface; no external OC_REF/LSS configuration; higher BOM cost.	Preferred for systems requiring real-time current telemetry and closed-loop field-oriented control (FOC).	Select DRV8305-Q1 when digital diagnostics, current feedback, or multi-motor synchronization via SPI are required.
STSPIN32F0A	Embedded 32-bit ARM Cortex-M0 MCU + gate driver + op-amps; requires firmware development; no AEC-Q100 Grade 1 certification.	Suitable for cost-sensitive, lower-volume applications where integrated control logic offsets added design complexity.	Select STSPIN32F0A only if MCU integration reduces total system footprint and software resources are available for motor control algorithm implementation.

Compared with DRV8305-Q1 and STSPIN32F0A, MPQ6531GVE-AEC1-P delivers deterministic analog fault response, minimal external component count for basic trapezoidal control, and certified automotive qualification - making it optimal for safety-aware, high-volume EPS and HVAC designs where simplicity and qualification rigor outweigh digital feature needs.

Availability

MPQ6531GVE-AEC1-P is available at Aetrix Electronics and suitable for electric power steering, HVAC blowers, and brake-by-wire actuators requiring stable component supply, AEC-Q100 compliance, and long-term automotive lifecycle support.

Supply support for MPQ6531GVE-AEC1-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, with core expertise in DC/DC converters, motor drivers, and gate drivers for automotive, industrial, and computing markets.

The MPQ6531 product line targets automotive-grade three-phase BLDC motor pre-drivers, emphasizing robust fault handling, wide input voltage operation, and AEC-Q100 qualification to meet stringent functional safety and reliability demands in chassis and comfort systems.

FAQ

What is the purpose of the OC_REF pin, and how is it used?

The OC_REF pin sets the over-current protection threshold for VDS-based short-circuit detection. Applying a voltage between 0.125V and 2.4V determines the trip point relative to MOSFET R_DS(on); for example, 1.0V with a 5mΩ MOSFET triggers at 200A. It can also disable protection when tied to VREG via 100kΩ resistor.

How does the trickle-charge circuit enable 100% duty cycle operation?

The internal trickle-charge circuit supplies ~5µA to each bootstrap capacitor during high-side conduction, compensating for leakage and maintaining sufficient gate voltage (>8V) even when the low-side FET remains off indefinitely - eliminating shoot-through risk during sustained high-side activation.

Can MPQ6531GVE-AEC1-P drive P-channel high-side MOSFETs?

No - the MPQ6531GVE-AEC1-P is designed exclusively for N-channel high-side and low-side MOSFETs. Its gate drivers provide positive voltage referenced to phase-leg source (SHA/SHB/SHC), requiring N-MOSFETs for both sides of each half-bridge.

What is the minimum recommended bootstrap capacitor value, and why?

The minimum bootstrap capacitor is 0.1µF (X7R/X5R, 25V rated). Smaller values may cause insufficient gate charge delivery during high-frequency PWM or high-duty-cycle operation, leading to weak high-side turn-on and increased conduction loss or thermal stress.

Does nFAULT require an external pull-up resistor, and what happens during a fault?

Yes - nFAULT is an open-drain output and requires an external pull-up (typically 4.7kΩ to 3.3V or 5V). During any fault (OCP, thermal shutdown, UVLO), nFAULT is actively pulled low and remains latched until nSLEEP is toggled or VIN cycles - ensuring persistent fault signaling to the host controller.

Is the DT pin resistor value linearly related to dead time, and what tolerance is recommended?

Yes - dead time (ns) = 60 × R_DT(kΩ), with ±1% tolerance recommended. A 20kΩ resistor yields ~1.2µs, suitable for most 20–30kHz PWM applications; tighter tolerance ensures consistent shoot-through margin across production units.

How does the LSS-based over-current protection differ from VDS sensing?

LSS monitors voltage across an external shunt resistor to detect over-current in the low-side path, offering precise, temperature-stable current limiting. VDS sensing measures MOSFET drain-source voltage to detect short circuits - independent of shunt placement but sensitive to R_DS(on) variation and temperature drift.

MPQ6531GVE-AEC1-P Specifications

Product attributes: Attribute value

Manufacturer:: Monolithic Power Systems Inc.

Series:: MPQ

Package/Case:: 28-VFQFN Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Active

Programmable:: -

Driven Configuration:: Half-Bridge

Channel Type:: 3-Phase

Number of Drivers:: 6

Gate Type:: N-Channel MOSFET

Voltage - Supply:: 5V ~ 60V

Logic Voltage - VIL, VIH:: 0.8V, 2V

Current - Peak Output (Source, Sink):: 800mA, 1A

Input Type:: Non-Inverting

High Side Voltage - Max (Bootstrap):: -

Rise / Fall Time (Typ):: -

Operating Temperature:: -40°C ~ 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: 28-QFN (4x5)

MPQ6531GVE-AEC1-P FAQ

1.How can I place an order for MPQ6531GVE-AEC1-P through Aetrix?

Please submit a Request for Quotation (RFQ) for MPQ6531GVE-AEC1-P on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for MPQ6531GVE-AEC1-P reliable?

The price and inventory of MPQ6531GVE-AEC1-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPQ6531GVE-AEC1-P is usually 5 days.

3.What payment methods are accepted for MPQ6531GVE-AEC1-P?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ6531GVE-AEC1-P transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MPQ6531GVE-AEC1-P?

MPQ6531GVE-AEC1-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MPQ6531GVE-AEC1-P order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for MPQ6531GVE-AEC1-P?

For technical support, including MPQ6531GVE-AEC1-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ6531GVE-AEC1-P requirements.

6.How does Aetrix verify that MPQ6531GVE-AEC1-P is sourced from the original manufacturer or authorized distributors?

All MPQ6531GVE-AEC1-P products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MPQ6531GVE-AEC1-P meets industry standards.

7.What is the process for return or replacement of MPQ6531GVE-AEC1-P?

All MPQ6531GVE-AEC1-P units undergo pre-shipment inspection (PSI). If there is an issue with MPQ6531GVE-AEC1-P, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The MPQ6531GVE-AEC1-P part is unused and in its original packaging.

Return procedure for MPQ6531GVE-AEC1-P:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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