Monolithic Power Systems Inc. EVQ6610-S-00B

Overview

EVQ6610-S-00B from Monolithic Power Systems is an evaluation board for the MPQ6610 half-bridge power driver IC, designed specifically to drive solenoid loads with programmable pull-in and hold current control. It operates from 5V to 30V input, integrates internal current sensing, and features OCP/OVP/OTP protection with fault indication via nFAULT pin.

For engineers reviewing the EVQ6610-S-00B datasheet, EVQ6610-S-00B pinout, EVQ6610-S-00B application, or EVQ6610-S-00B equivalent, this board enables rapid validation of solenoid drive timing, current regulation accuracy, thermal behavior under pulsed load, and fault recovery response in industrial actuation systems.

Technical Context

The board implements the MPQ6610GS-AEC1 SOIC-8 half-bridge driver with integrated high-side and low-side MOSFET gate drivers, bootstrap circuitry (BST pin), and current-sense resistor interface (ISET pin). It includes a dedicated 3.3V LDO (MCP1790-3302E/DB) for logic-level supply and dual potentiometers (RV1, RV2) for independent adjustment of pull-in and hold current thresholds.

Control is configurable via onboard slide switch SW1 or external logic signal applied to P2 (2.5V–5V compatible), while solenoid output connects through P3. Fault status is signaled on nFAULT (open-drain, active-low) and indicated by D2 LED. Input voltage range (5–30V) and overcurrent trip (3–6A) are hardware-defined per MPQ6610 specification.

Key Specifications

Availability

EVQ6610-S-00B is available at Aetrix Electronics and suitable for industrial valve control, automotive door lock actuation, and HVAC damper positioning requiring stable component supply and validated solenoid drive performance.

Supply support for EVQ6610-S-00B 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 analog and power ICs, with design centers across Asia and North America and global manufacturing partnerships.

The MPQ6610 product line targets robust, current-controlled solenoid actuation in harsh environments, emphasizing integrated protection, programmable drive profiles, and AEC-Q100 qualified variants for automotive-grade reliability.

FAQ

What solenoid load parameters can be validated using the EVQ6610-S-00B?

This board supports validation of solenoid pull-in time, hold current stability, inrush current limiting, thermal derating under continuous duty, and fault recovery timing. It accommodates solenoids rated up to 30V and peak currents within the MPQ6610's 3A continuous / 6A transient capability, with direct measurement points at TP1–TP5.

How is current programming implemented on the EVQ6610-S-00B?

Pull-in current is set by RV1 in parallel with RV2; hold current is set solely by RV2. The hold current is always lower than pull-in current due to internal resistor ratio. At minimum RV2 setting, hold current is ~300mA; full RV1 rotation disables pull-in current limiting. Values are calculated using MPQ6610's ISET-to-current transfer function (1.25V reference).

Can the EVQ6610-S-00B operate without the onboard 3.3V LDO?

No - the MCP1790-3302E/DB LDO supplies regulated 3.3V to the MPQ6610's logic inputs (IN, EN) and internal circuitry. Removing it or bypassing its output will prevent proper operation. External 3.3V logic supply is not supported; control signals must be referenced to this regulated rail.

What is the role of the TVS diode D3 on the board?

D3 (SMCJ60A) is a 60V unidirectional TVS diode placed across the VIN–GND rails to suppress voltage transients induced by solenoid coil flyback or supply-line spikes. It clamps transients above ~69V (V_BR), protecting the MPQ6610's VIN pin and downstream components during inductive load switching.

How do I configure the board for external microcontroller control?

Remove jumper JP1, then apply a 2.5V–5V logic signal to P2 pins 1 (IN) and 2 (GND). The signal drives the MPQ6610's IN pin directly; EN is tied high internally. Timing delays (e.g., pull-in duration) scale with input voltage level, so fixed-voltage MCU GPIO or level-shifted signals are recommended for repeatable behavior.

Is the EVQ6610-S-00B RoHS-compliant and lead-free?

Yes - all components on the EVQ6610-S-00B, including the MPQ6610GS-AEC1 IC and MCP1790-3302E/DB regulator, are lead-free, halogen-free, and fully compliant with the EU RoHS directive. MPS confirms green status for this board via its Quality Assurance portal.