Monolithic Power Systems Inc. MPQ6610GS-AEC1-P

Overview

MPQ6610GS-AEC1-P from Monolithic Power Systems is an AEC-Q100 Grade 1 qualified half-bridge power driver for automotive and industrial motion control. It integrates dual N-channel MOSFETs (R_DS(on) = 100 mΩ HS / 120 mΩ LS), delivers ±3A output current, operates from 4V–55V input, and provides internal current sensing, cycle-by-cycle regulation, open-load detection, OCP, UVLO, and thermal shutdown - used in solenoid, relay, and brushed DC motor drive circuits.

For engineers reviewing the MPQ6610GS-AEC1-P datasheet, MPQ6610GS-AEC1-P pinout, MPQ6610GS-AEC1-P application, or MPQ6610GS-AEC1-P equivalent, key selection considerations include its 55V max VIN rating, SOIC-8 package thermal performance (θ_JA = 96°C/W), integrated current-sense scaling (1.5V trip threshold at ISET), fault reporting via open-drain nFAULT, and AEC-Q100 qualification for under-hood automotive use.

Technical Context

The MPQ6610GS-AEC1-P implements a constant-off-time (COT) PWM current regulation architecture that triggers output state reversal when load current reaches 1.5V at the ISET pin - enabling precise, resistor-set current limiting without external shunts. Its bootstrap gate drive supports high-side N-MOSFET switching with internal trickle charge pump assistance.

Protection logic operates independently of regulation: over-current protection (OCP) uses dedicated sensing circuitry with 1µs deglitch and 1.6ms auto-retry, while open-load detection monitors OUT voltage at VIN/2 during Hi-Z states. Fault conditions (OCP, OTP, open-load) assert active-low nFAULT; UVLO (4.1V rising) and OVP (55V rising) disable all circuitry.

Key Specifications

Pinout & Package

MPQ6610GS-AEC1-P is housed in a thermally enhanced SOIC-8 package (5.00 mm × 6.20 mm × 1.75 mm), rated for 55V operation and offering lower thermal resistance than TSOT23-8. Pin numbering follows JEDEC MS-012 AA standard, with Pin 1 located at bottom-left corner when top marking is read left-to-right.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DRV8876QPWPRQ1 and TLE9201SG, MPQ6610GS-AEC1-P offers optimal balance of SOIC-8 compactness, 55V operation, and integrated current regulation - making it ideal for automotive solenoid and relay drivers where space, voltage margin, and analog current feedback are prioritized over digital configurability or ultra-low R_DS(on).

Availability

MPQ6610GS-AEC1-P is available at Aetrix Electronics and suitable for automotive solenoid control, industrial relay driving, and brushed DC motor applications requiring stable component supply, AEC-Q100 compliance, and SOIC-8 manufacturability.

Supply support for MPQ6610GS-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 MPQ6610 product line targets automotive-grade motion control, delivering integrated half-bridge drivers with current regulation, diagnostics, and AEC-Q100 qualification for under-hood and chassis applications.

FAQ

What is the maximum continuous output current for MPQ6610GS-AEC1-P in SOIC-8 at 85°C ambient?

The MPQ6610GS-AEC1-P supports ±3A continuous output current in SOIC-8 when ambient temperature is ≤85°C and PCB layout includes ≥2 sq-in of 2-oz copper on inner layers for thermal relief. At 125°C ambient, derating to ~2.2A is required based on θ_JA = 96°C/W and T_J(MAX) = 150°C.

How does the ISET pin function for current regulation and measurement?

The ISET pin sources or sinks current proportional to load current (100 µA/A typical). A resistor to GND sets scaling: e.g., 10kΩ yields 1V/A, so 1.5A load produces 1.5V - triggering cycle-by-cycle regulation at the 1.5V trip threshold. This same voltage can be measured for analog current monitoring.

Does MPQ6610GS-AEC1-P require an external bootstrap diode?

No. The MPQ6610GS-AEC1-P integrates a trickle charge pump that maintains the BST capacitor voltage during extended high-side conduction, eliminating the need for an external bootstrap diode - simplifying layout and improving reliability in high-duty-cycle applications.

What fault conditions cause the nFAULT pin to assert low?

nFAULT goes low for over-current protection (OCP), over-temperature protection (OTP), and open-load detection. It does not assert for current-limit trips during normal PWM regulation. After fault clearance, nFAULT returns high via external pull-up; no reset command is needed.

Can MPQ6610GS-AEC1-P drive loads referenced to VIN instead of GND?

Yes. The half-bridge topology allows high-side switching: when IN = 1 and EN = 1, OUT connects to VIN (high-side drive); when IN = 0 and EN = 1, OUT connects to GND (low-side drive). This enables driving loads between OUT and either rail, including floating inductive loads.

Is there a minimum recommended BST capacitor value?

Yes. A 100nF X7R ceramic capacitor rated ≥16V must be placed directly between BST and OUT pins. Lower values risk insufficient gate drive voltage during high-frequency or high-duty-cycle operation, leading to increased HS R_DS(on) and thermal stress.

How does open-load detection work during EN = 0?

When EN = 0, internal weak current sources bias OUT to ~VIN/2. If a load connects OUT to GND or VIN, OUT voltage shifts significantly away from VIN/2. The device detects this deviation and asserts nFAULT - enabling verification of mechanical connection before enabling drive.