Monolithic Power Systems Inc. EVQ6628-F-00A

Overview

EVQ6628-F-00A from Monolithic Power Systems is an evaluation board for the MPQ6628 AEC-Q100 Grade 1 octal half-bridge motor driver IC, supporting 5.5V–40V input, 0.8A per channel output, serial SPI control, and integrated diagnostics including open-load, short-to-rail, over-temperature, over-voltage, and under-voltage detection. It enables rapid validation of multi-motor drive systems in automotive body electronics.

For engineers reviewing the EVQ6628-F-00A datasheet, EVQ6628-F-00A pinout, EVQ6628-F-00A application, or EVQ6628-F-00A equivalent, this board provides full access to all eight half-bridge outputs (OUT1–OUT8), SPI interface signals (CLK/CS/DI/DO), enable control (EN), on-board 3.3V LDO (MPQ2013AGQ-33-Z), LED-based current-direction indicators, and test points for real-time register monitoring and fault analysis.

Technical Context

The EVQ6628-F-00A implements direct hardware evaluation of the MPQ6628GF-AEC1 - a TSSOP-28EP packaged octal half-bridge driver with daisy-chainable SPI interface, programmable slew-rate control, and comprehensive fault reporting via dedicated status registers. All eight channels support independent high-side, low-side, or H-bridge configurations.

It integrates diagnostic feedback paths for each output, including analog current-sense monitoring, thermal shutdown with hysteresis, and supply rail supervision (VS, VCC). The board's layout includes Kelvin sensing traces for OUTx pins and dedicated GND planes to preserve signal integrity during transient load switching.

Key Specifications

Availability

EVQ6628-F-00A is available at Aetrix Electronics and suitable for automotive body control modules, industrial multi-axis stepper/solenoid drivers, and avionics actuator interface development requiring stable component supply and AEC-Q100-compliant reference validation.

Supply support for EVQ6628-F-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 design expertise in DC/DC converters, motor drivers, and battery management solutions for automotive, industrial, and cloud infrastructure markets.

The EVQ6628-F-00A belongs to MPS's automotive-grade evaluation platform family, developed specifically to accelerate qualification and integration of AEC-Q100-compliant motor drivers into safety-critical vehicle subsystems such as HVAC actuators, seat positioners, and mirror controls.

FAQ

What is the primary function of the EVQ6628-F-00A?

The EVQ6628-F-00A is a dedicated evaluation board for the MPQ6628GF-AEC1 octal half-bridge motor driver IC. It provides complete hardware access to all eight output channels, SPI interface signals, enable control, and on-board 3.3V regulation to validate timing, fault response, and thermal behavior in real-world motor drive applications.

Does the board include firmware or GUI software?

Yes - the EVQ6628-F-00A supports a Windows-based GUI that enables register-level configuration of all eight channels via SPI. Users can set individual channel states (high-side/low-side/H-bridge), adjust slew rates, trigger diagnostics, and monitor real-time status bits without writing custom code.

Can the board drive bidirectional DC motors?

Yes - each pair of adjacent outputs (e.g., OUT1/OUT2) can be configured as an H-bridge using the MPQ6628's internal control logic. The board includes LED indicators showing current direction per channel when SW1 is enabled, confirming bidirectional operation capability.

What protection features are demonstrated on this board?

The board validates all MPQ6628-integrated protections: open-load detection (via current-sense threshold), short-to-VS/GND fault latching, over-temperature shutdown (150°C trip), over-voltage lockout (>41.5V), and under-voltage lockout (<4.5V). Faults appear in SPI status registers and halt output drive until cleared.

Is the MPQ6628GF-AEC1 soldered directly onto the board?

Yes - the MPQ6628GF-AEC1 is mounted in its final TSSOP-28EP package with exposed thermal pad, using industry-standard reflow profile. The board layout follows MPS's recommended thermal vias and copper pour guidelines to ensure reliable operation at full 0.8A per channel under continuous load.

Are external power supplies required for logic and motor rails?

Only one external supply is needed: VIN (5.5V–40V) powers both motor outputs and the on-board MPQ2013AGQ-33-Z regulator, which generates clean 3.3V for SPI, EN, and logic. No separate VCC supply is required - all digital interfaces operate from the regulated 3.3V rail.