Monolithic Power Systems Inc. MPQ6614GDE-AEC1-P

Overview

MPQ6614GDE-AEC1-P 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, delivering up to 1.5A continuous output current with internal cycle-by-cycle current regulation and integrated current-sense output (VISEN). It drives brushed DC motors, solenoids, or one winding of a bipolar stepper motor in automotive body electronics such as power seats and window lifts.

For engineers reviewing the MPQ6614GDE-AEC1-P datasheet, MPQ6614GDE-AEC1-P pinout, MPQ6614GDE-AEC1-P application, or MPQ6614GDE-AEC1-P equivalent, key selection criteria include its 250mΩ high-side/190mΩ low-side R_DS(ON), PWM-compatible logic interface, integrated charge pump, AEC-Q100 qualification, and QFN-8 wettable flanks package for automotive-grade solder joint inspection.

Technical Context

The MPQ6614GDE-AEC1-P implements a full H-bridge topology with independent gate drive control for four N-channel MOSFETs, using an internal charge pump to sustain 100% duty-cycle operation without external high-side gate drivers. Its current regulation employs 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 short-circuit protection - all implemented in hardware without reliance on the VISEN current-sense path.

Key Specifications

Pinout & Package

MPQ6614GDE-AEC1-P is housed in a thermally enhanced QFN-8 package (2mm × 3mm) with wettable flanks for automated optical solder-joint inspection - critical for automotive production traceability.

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, the MPQ6614GDE-AEC1-P offers optimal integration for cost- and space-constrained automotive actuators - combining AEC-Q100 Grade 1, QFN-8 wettable flanks, VISEN feedback, and <1μA sleep current in a single 6mm² footprint.

Availability

MPQ6614GDE-AEC1-P is available at Aetrix Electronics and suitable for power seat actuation, auto window lift control, and engine cooling fan control requiring stable component supply across automotive production lifecycles.

Supply support for MPQ6614GDE-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 design centers in the US, China, and Taiwan, and global manufacturing partnerships.

The MPQ6614 product line targets automotive body electronics, delivering compact, AEC-Q100-qualified motor drivers with integrated sensing and protection - simplifying ECU designs for electric actuators in passenger vehicles.

FAQ

What is the maximum allowable motor supply voltage for MPQ6614GDE-AEC1-P?

The absolute maximum VIN rating is +38V, but the recommended operating range is 5V to 35V. Operation above 35V risks exceeding safe junction temperature under load and violates AEC-Q100 stress conditions; sustained use beyond 35V voids qualification compliance and may trigger immediate UVLO shutdown.

How is current limit configured without an external shunt resistor?

Current limit is set by connecting a precision resistor between ISET and GND. The IC sources 100μA per ampere of desired IOUT into this resistor, generating a voltage (e.g., 1.5V at 1.5A). VISEN then outputs twice that voltage (3V), which serves as the analog current feedback signal - eliminating shunt losses and layout sensitivity.

Does MPQ6614GDE-AEC1-P support 100% duty-cycle operation?

Yes - the integrated charge pump generates boosted gate drive voltage for the high-side N-channel MOSFETs, enabling true 100% duty-cycle forward/reverse operation without bootstrap capacitor limitations or dead-time constraints common in external gate-driver solutions.

What happens when both IN1 and IN2 are held low for more than 2ms?

The device enters ultra-low-power sleep mode, reducing supply current to ≤1μA. All gate drivers disable, outputs go high-impedance, and internal bias circuits shut down. Normal operation resumes within 500μs after either IN1 or IN2 transitions high, with no external reset required.

Is the QFN-8 package with wettable flanks compatible with standard automotive SMT reflow profiles?

Yes - the MPQ6614GDE-AEC1-P uses JEDEC MO-220-compliant QFN-8 (2mm × 3mm) with wettable flank leads designed for IPC-A-610 Class 3 solder joint inspection. It supports peak reflow temperatures up to 260°C and is qualified for lead-free assembly per J-STD-020.

How does over-current protection differ from the current-regulation function?

OCP is a separate, hardware-based protection circuit that monitors HS and LS FETs independently using dedicated sense FETs - it triggers at 3–5A regardless of ISET setting and disables all outputs for 1ms before auto-retry. Current regulation uses the VISEN path and ISET resistor to enforce precise, adjustable PWM-based current limiting during normal operation.

Can MPQ6614GDE-AEC1-P drive a bipolar stepper motor winding?

Yes - it can drive one unipolar or bipolar stepper motor phase (winding) by connecting the winding between OUT1 and OUT2. Microcontroller-generated IN1/IN2 sequences enable full-step, half-step, or microstepping via external timing; current regulation maintains consistent torque across speed ranges without external chopper control.