Monolithic Power Systems Inc. EVQ6610-J-00A

Overview

EVQ6610-J-00A from Monolithic Power Systems is an AEC-Q100-qualified evaluation board for the MPQ6610GJ half-bridge power driver IC, supporting 4–45V input and up to 3A load current. It enables rapid validation of solenoid, brushed DC motor, and relay drive circuits with on-board logic generation, external controller interface (P1), and adjustable current limit via ISET pin scaling.

For engineers reviewing the EVQ6610-J-00A datasheet, EVQ6610-J-00A pinout, EVQ6610-J-00A application, or EVQ6610-J-00A equivalent, this board provides verified hardware reference for MPQ6610GJ integration-covering fault indication (nFAULT), bootstrap operation (BST), current sensing (ISET), and dual-level logic compatibility (2.5V/3.3V/5V).

Technical Context

The EVQ6610-J-00A implements a functional test platform for the MPQ6610GJ TSOT23-8 half-bridge driver, replicating its internal current-sense architecture, over-current protection trigger at 1.5V on ISET, and EN/IN logic-controlled output states (High, Low, High-Z). It supports both self-contained jumper-based control (JP1/JP2) and external microcontroller interfacing via P1 header.

Board-level protections include over-voltage (OVP), over-temperature (OTP), and over-current (OCP), with fault status signaled through open-drain nFAULT. Input voltage rails are decoupled using 100μF/100V electrolytic (C1) and 2.2μF/100V ceramic (C2) capacitors; output path includes 100nF/100V (C3) and dual 100nF/25V (C4/C5) ceramics.

Key Specifications

Availability

EVQ6610-J-00A is available at Aetrix Electronics and suitable for solenoid actuation, brushed DC motor control, and relay switching applications requiring stable component supply, automotive-grade validation support, and fast-turn evaluation hardware.

Supply support for EVQ6610-J-00A 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 expertise in DC-DC conversion, motor drivers, and automotive-grade analog solutions.

The EVQ6610-J-00A belongs to MPS's automotive-qualified evaluation board product line, designed to accelerate development of AEC-Q100-compliant power stages for body electronics, chassis actuators, and engine control subsystems.

FAQ

What is the purpose of the ISET pin on the EVQ6610-J-00A?

The ISET pin sets the over-current protection threshold by scaling output current against a 1.5V trip point. A 10kΩ trimming potentiometer (RV1) allows precise adjustment - for example, 1V per 1A yields a 1.5A trip. This enables safe, repeatable current limiting without external sense resistors or calibration.

Can the EVQ6610-J-00A be used with a 2.5V microcontroller?

Yes. The board accepts 2.5V, 3.3V, or 5V logic supply on the VCC rail, making it compatible with low-voltage MCUs. Control signals (EN/IN) are referenced to this VCC, and the MPQ6610GJ's input thresholds are designed for full compatibility across all three logic levels.

How do I configure the board for external controller operation?

Remove short jumpers JP1 and JP2, then connect your external controller to the 2-pin P1 header (EN and IN lines). Ensure matching ground reference and logic voltage level between controller and board VCC. The truth table in the quick start guide defines output behavior based on EN/IN states.

Does the board include bootstrap capacitor support for high-side FET drive?

Yes. The schematic shows BST and OUT pins connected to a 100nF/100V ceramic capacitor (C3), directly supporting the internal charge pump required for high-side N-channel MOSFET drive in half-bridge configurations - consistent with MPQ6610GJ's integrated bootstrap diode architecture.

Is thermal performance validated for continuous 3A operation?

Yes. The board layout uses copper pour and optimized trace routing to sustain 3A continuous output under 45V input with ambient temperatures up to 85°C. Thermal validation is documented in the MPQ6610GJ datasheet and confirmed via board-level testing in the EVQ6610-J-00A design files.

What protection features are implemented on the evaluation board?

The board inherits all MPQ6610GJ protections: over-current (via ISET), over-voltage (OVP at VIN), and over-temperature (OTP). Fault conditions are reported through the open-drain nFAULT pin, which pulls low during any active protection event and requires external pull-up for host monitoring.