Monolithic Power Systems Inc. MPQ6614GDE-AEC1-Z

Overview

MPQ6614GDE-AEC1-Z from Monolithic Power Systems is an AEC-Q100 Grade 1 qualified H-bridge DC motor driver IC integrating four N-channel MOSFETs, operating from 5V to 35V input voltage and delivering up to 1.5A continuous output current. It features internal charge pump gate drive, cycle-by-cycle current regulation without external shunt resistors, and PWM-compatible logic interface. Used in automotive seat adjusters, HVAC actuators, and electronic throttle control systems.

For engineers reviewing the MPQ6614GDE-AEC1-Z datasheet, MPQ6614GDE-AEC1-Z pinout, MPQ6614GDE-AEC1-Z application, or MPQ6614GDE-AEC1-Z equivalent, key selection criteria include its 250mΩ high-side/190mΩ low-side R_DS(ON), integrated current-sense output (VISEN), AEC-Q100 qualification, and QFN-8 wettable flanks package for automated optical inspection.

Technical Context

The MPQ6614GDE-AEC1-Z implements a full H-bridge topology with independent gate drivers powered by an internal charge pump, enabling 100% duty-cycle operation without external high-side gate bias. Its current regulation uses constant-off-time PWM with blanking time (800 ns) and trip thresholds (2.88–3.12 V rising at VISEN) tied to an externally set ISET resistor.

Protection architecture includes independent over-current detection on both high- and low-side FETs (3–5 A threshold), thermal shutdown at 165°C with 25°C hysteresis, UVLO (4.4–4.7 V turn-on), and sleep mode entry after 2 ms of IN1/IN2 low state-reducing standby current to ≤1.45 µA at 12 V.

Key Specifications

Pinout & Package

MPQ6614GDE-AEC1-Z is housed in a thermally enhanced QFN-8 package (2mm × 3mm) with wettable flanks for solder joint inspection and improved thermal dissipation (θ_JC = 15°C/W). The exposed thermal pad must be soldered to PCB ground plane.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar H-bridge motor driver applications.

Compared with TB9051FTG and VNH7040ASTR, MPQ6614GDE-AEC1-Z offers optimal balance of AEC-Q100 compliance, shuntless current sensing, compact QFN-8 footprint, and minimal external components-ideal for cost-sensitive, space-constrained automotive actuators below 1.5A.

Availability

MPQ6614GDE-AEC1-Z is available at Aetrix Electronics and suitable for automotive seat adjustment, HVAC damper control, and electronic throttle applications requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MPQ6614GDE-AEC1-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.

The MPQ6614-AEC1 product line targets automotive-grade motor control, emphasizing integration, AEC-Q100 reliability, and simplified system-level design for body electronics and chassis subsystems.

FAQ

What is the purpose of the ISET pin, and how is it configured?

The ISET pin sets the overcurrent trip threshold by connecting an external resistor to ground. For every 1A of output current, 100µA flows into ISET, generating a voltage (e.g., 1V with 10kΩ) that determines the trip point. VISEN outputs twice this voltage, enabling direct current monitoring without amplification or calibration.

Does MPQ6614GDE-AEC1-Z require external bootstrap capacitors?

No. The device integrates a charge pump that generates gate drive voltages for all four N-channel MOSFETs, eliminating the need for external bootstrap capacitors or high-side driver ICs-reducing component count and layout complexity.

How does the sleep mode function, and what triggers wake-up?

Sleep mode activates automatically when both IN1 and IN2 remain low for ≥2 ms, reducing supply current to ≤1.45 µA at 12 V. Wake-up occurs within 500 µs when either IN1 or IN2 transitions high for ≥50 ns, restoring full H-bridge operation without reset delay.

Can MPQ6614GDE-AEC1-Z drive stepper motor windings?

Yes. It can drive one bipolar stepper motor winding as a full H-bridge, supporting microstepping when paired with external controller logic. Its 1.5A rating suits 2-phase, 1.8° step motors used in automotive instrument clusters and mirror positioning.

What is the maximum allowable capacitance on the VISEN pin?

The VISEN pin must not exceed 500 pF total capacitance, including PCB trace and any external filter. Exceeding this value risks instability in the internal current-sense amplifier and inaccurate trip threshold response during fast transients.

Is thermal derating required for continuous 1.5A operation?

Yes. At 25°C ambient, 1.5A is achievable with proper PCB copper area (≥4 cm² 2oz Cu thermal pad) and airflow. Derating begins above 70°C ambient per θ_JA = 70°C/W; at 105°C ambient, max continuous current drops to ~0.7A to maintain T_J ≤ 125°C.

How does the blanking time affect startup behavior?

The fixed 800 ns blanking time suppresses false overcurrent trips caused by reverse-recovery spikes in body diodes or load capacitance during switching transitions. It ensures reliable current regulation starts only after transient ringing settles.