Monolithic Power Systems Inc. EV6604B-V-00A

Overview

EV6604B-V-00A from Monolithic Power Systems is a dedicated evaluation board for the MP6604B dual H-bridge motor driver IC, supporting 4.5V–45V input and 2.5A per bridge output. It implements PHASE/EN control logic, features on-board jumpers and manual switches (SW1), and provides accessible test points (VG, NFLT, PGNDA, PGNDB) for real-time monitoring of gate drive, fault signaling, and power ground paths in brushed DC or stepper motor drive validation.

For engineers reviewing the EV6604B-V-00A datasheet, EV6604B-V-00A pinout, EV6604B-V-00A application, or EV6604B-V-00A equivalent, this board enables rapid functional verification of MP6604B's dual H-bridge timing behavior, current-sense resistor integration (R2/R3), fault response under overcurrent/thermal conditions, and external MCU interface via CN1 (10-pin header) with configurable ENBL/PHASE/BRAKE signals.

Technical Context

The EV6604B-V-00A implements the MP6604B's native PHASE/ENABLE control architecture with discrete logic-level inputs routed to CN1 and SW1. It integrates two independent 45V/2.5A H-bridges with integrated charge pump (VCP), internal LDO (VREG), and open-drain nFAULT reporting - all validated at 25°C ambient using 4.7μF/100V ceramic bulk capacitors (C5/C6) and 100nF/100V decoupling (C2/C7/C8).

Board-level protection includes SMA TVS diode (D1) across VIN-GND, 100mΩ current-sense resistors (R2/R3) for each bridge leg, and jumper-selectable VCC (3.3V/5V) supply for logic interface. The QFN-28 MP6604BGV IC is mounted with thermal pad exposed to inner copper layers, and PCB layout follows MPS-recommended trace width and grounding for high-current motor drive stability.

Key Specifications

Availability

EV6604B-V-00A is available at Aetrix Electronics and suitable for brushed DC motor control validation, bipolar stepper motor microstepping evaluation, and dual-axis actuator development requiring stable component supply and repeatable lab-grade test conditions.

Supply support for EV6604B-V-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 core expertise in DC-DC converters, motor drivers, and battery management solutions.

The MP6604B product line delivers integrated dual H-bridge drivers for cost-sensitive motion control applications, emphasizing robust gate drive, integrated protection, and minimal external component count for space-constrained designs.

FAQ

What input voltage range does the EV6604B-V-00A support?

The board accepts 4.5V to 45V DC input on the VIN connector, matching the MP6604B IC's operational range. This allows testing across common industrial (12V/24V), solar (36V), and higher-voltage DC motor systems while maintaining safe margin against transients up to 100V handled by the onboard SMA TVS diode (D1).

How is motor direction and braking controlled on this evaluation board?

Direction and braking are implemented via PHASE and ENBL inputs per bridge, following the truth table in the quick start guide. Setting xPHASE high with xENBL high drives one output high and the other low; setting xBRAKE high forces both outputs low. These signals are sourced either from external MCU via CN1 or manually toggled using SW1 switches.

Does the EV6604B-V-00A provide current sensing capability?

Yes - it includes two precision 100mΩ, 1% film resistors (R2 and R3) placed in the low-side return path of each H-bridge. Voltage drop across these resistors can be measured at test points PGNDA and PGNDB to calculate real-time load current, supporting closed-loop current limiting and stall detection.

Can the board operate with a 3.3V logic supply?

Yes - the VCC connector accepts either 3.3V or 5V logic supply, selectable via JP2 jumper. All digital inputs (APHASE, AENBL, etc.) and the VREG LDO output are compatible with both levels, ensuring interoperability with modern low-voltage MCUs and FPGAs without level-shifting circuitry.

What protection features are implemented on the EV6604B-V-00A?

The board implements overvoltage clamping (D1 TVS), overcurrent detection (via R2/R3 + MP6604B internal comparators), thermal shutdown (MP6604B die temperature sensing), and undervoltage lockout. Fault status is reported on nFAULT, visible at LED1 and test point NFLT, and can be monitored by an external controller.

Is the MP6604B IC soldered to the board with thermal pad connection?

Yes - the MP6604BGV is mounted in a QFN-28 (4mm × 5mm) package with exposed thermal pad soldered to internal copper planes per MPS layout recommendations. This ensures effective heat dissipation during sustained 2.5A operation and aligns with the thermal performance validated in the MP6604B datasheet.