Monolithic Power Systems Inc. MPQ6610GS-AEC1-Z

Overview

MPQ6610GS-AEC1-Z from Monolithic Power Systems is an AEC-Q100 Grade 1 qualified 55V, 3A half-bridge power driver with integrated current sensing, cycle-by-cycle regulation, and fault diagnostics. It features dual N-channel MOSFETs (R_HS = 100 mΩ typ, R_LS = 120 mΩ typ), operates from 4V–55V input, and delivers up to 3A output current in SOIC-8 package for brushed DC motor, solenoid, and relay control in automotive body electronics.

For engineers reviewing the MPQ6610GS-AEC1-Z datasheet, MPQ6610GS-AEC1-Z pinout, MPQ6610GS-AEC1-Z application, or MPQ6610GS-AEC1-Z equivalent, key selection criteria include its AEC-Q100 qualification, internal current-sense voltage scaling (1.5V trip at ISET), open-drain nFAULT reporting, bootstrap-based high-side drive, and SOIC-8 thermal performance (θ_JA = 96°C/W).

Technical Context

The MPQ6610GS-AEC1-Z implements a constant-off-time (COT) PWM current regulation architecture that triggers output state reversal when load current reaches the 1.5V ISET threshold, with 16.5µs t_ITRIP and 1µs blanking time to suppress turn-on spikes. Its bootstrap + trickle charge pump enables high-side N-MOSFET drive without external gate supply.

Protection logic independently monitors over-current (±3A OCP), open-load (via VIN/2 bias detection), UVLO (4.1V rising), OVP (55V rising), and thermal shutdown (165°C). Faults assert open-drain nFAULT low; recovery is automatic after 1.6ms retry delay for OCP or die cooldown for OTP.

Key Specifications

Pinout & Package

MPQ6610GS-AEC1-Z uses thermally enhanced SOIC-8 package (JEDEC MS-012 AA), with 96°C/W junction-to-ambient thermal resistance on 4-layer PCB. Pin functions are identical across MPQ6610 variants; SOIC-8 pin numbering follows standard orientation (Pin 1 = BST, Pin 8 = EN).

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-Z uniquely combines resistor-programmable current limiting, analog ISET voltage output, bootstrap-based high-side drive, and SOIC-8 thermal performance-making it optimal for cost-sensitive, analog-monitored automotive actuators where flexibility and simplicity are prioritized.

Availability

MPQ6610GS-AEC1-Z is available at Aetrix Electronics and suitable for automotive door modules, engine cooling systems, electronic parking brakes, and commercial vehicle air control requiring stable component supply, AEC-Q100 traceability, and long-term production continuity.

Supply support for MPQ6610GS-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 core expertise in DC/DC converters, motor drivers, and automotive-grade analog solutions.

The MPQ6610 product line delivers integrated half-bridge drivers for automotive body electronics, designed to replace discrete MOSFET+gate-driver solutions while meeting AEC-Q100 Grade 1 requirements for under-hood and cabin applications.

FAQ

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

The MPQ6610GS-AEC1-Z delivers up to 3A continuous output current in SOIC-8 package at T_A = 85°C with ≥2 in² 2-oz copper on top/bottom layers and 2 thermal vias per pad. Derating begins above 85°C per θ_JA = 96°C/W; at 105°C ambient, max current drops to ~2.2A.

How does the ISET pin provide current measurement and regulation simultaneously?

The ISET pin sources current proportional to load current (100 µA/A) and serves as the regulation comparator input. When ISET voltage reaches 1.5V (set by external resistor), the COT regulator forces output state reversal. The same analog voltage can be read by an ADC for real-time current monitoring without additional components.

Can MPQ6610GS-AEC1-Z drive inductive loads without external flyback diodes?

Yes-the internal N-MOSFETs include body diodes rated for continuous freewheeling current. For 3A loads, the body diode forward voltage is ≤1.1V, enabling efficient inductive kickback recirculation without external diodes in most solenoid/motor applications.

What fault conditions assert the nFAULT pin, and how is recovery handled?

nFAULT goes low for over-current (OCP), over-temperature (OTP), and open-load faults-but not for normal current regulation trips. After OCP, the device disables outputs for 1.6ms then auto-re-enables; after OTP or open-load, nFAULT clears immediately upon fault removal and EN reassertion.

Is the bootstrap capacitor value critical, and what happens if it's undersized?

Yes-a 100nF X7R ceramic capacitor between BST and OUT is mandatory. If undersized, high-side gate drive collapses during extended high-side conduction, causing shoot-through risk, excessive R_DS(on), or thermal failure. Voltage ripple on BST must stay within VIN to VIN+5.7V absolute max.

Does MPQ6610GS-AEC1-Z support 3.3V microcontroller logic interfaces directly?

Yes-its EN and IN pins accept 2.5V, 3.3V, and 5V logic levels with VIH = 2.0V min and VIL = 0.8V max. Internal 530kΩ pull-down resistors ensure defined Hi-Z state when MCU pins are tristated or unpowered, eliminating need for external biasing.

How is open-load detection implemented, and what load impedance triggers it?

When EN = 0, internal circuitry biases OUT to VIN/2. If |V_OUT − VIN/2| > 1.5V (for VIN = 24V), open-load is detected. This corresponds to load impedances >100kΩ-effectively identifying disconnected wires or broken solenoids without external comparators.