Monolithic Power Systems Inc. EV6532-R-00A

Overview

EV6532-R-00A from Monolithic Power Systems is an evaluation board for the MP6532GR three-phase BLDC motor pre-driver IC, supporting 5V–60V input operation and configured to drive six external N-channel MOSFETs in three half-bridge stages. It accepts Hall sensor feedback (3.3V or 5V logic) and receives PWM/DIR/nBRAKE control signals from an external MCU or FPGA, enabling closed-loop commutation for brushless motors in power tools and e-bikes.

For engineers reviewing the EV6532-R-00A datasheet, EV6532-R-00A pinout, EV6532-R-00A application, or EV6532-R-00A equivalent, this board provides validated hardware reference for MP6532GR integration, OCP threshold tuning via OC_REF voltage (0.1–2V), 100% duty-cycle capability, and fault reporting via nFAULT output - critical for rapid prototyping of industrial and portable motor drives.

Technical Context

The EV6532-R-00A implements a gate driver interface for the MP6532GR pre-driver IC, which delivers high-side and low-side gate drive outputs (GHA/GLA, GHB/GLB, GHC/GLC) with bootstrap capacitor support (BSTA/BSTB/BSTC) and integrated level-shifting for N-channel MOSFETs. It routes Hall inputs (HA/HB/HC), direction (DIR), PWM, brake (nBRAKE), and fault (nFAULT) signals to external controllers.

Board-level protection includes overcurrent detection via adjustable OC_REF voltage input, thermal shutdown (OTP), and discrete Schottky diodes (B130LAW) on each phase leg. Input filtering uses a 1000µF/63V electrolytic capacitor (C7) and nine 4.7µF/100V ceramic capacitors across power rails to suppress switching noise and sustain transient load currents.

Key Specifications

Availability

EV6532-R-00A is available at Aetrix Electronics and suitable for power tool development, e-bike motor control validation, and industrial BLDC commissioning requiring stable component supply and repeatable test conditions.

Supply support for EV6532-R-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 analog and power ICs, with design centers in the US, China, and Taiwan, and global manufacturing partnerships.

The MP6532 product line delivers three-phase BLDC pre-driver ICs optimized for high-efficiency, high-voltage motor control in portable and industrial applications where precise timing, robust fault handling, and compact layout are essential.

FAQ

What external components are required to operate the EV6532-R-00A?

The board requires an external 5–60V DC power source, a 3.3V or 5V Hall sensor supply, a microcontroller or FPGA to generate DIR/PWM/nBRAKE signals, and a three-phase BLDC motor with Hall sensors. No additional gate drivers or current sense amplifiers are needed - all signal conditioning and protection circuitry is onboard.

How is overcurrent protection configured on this evaluation board?

OCP is set by applying a precision voltage (0.1–2.0V) to the OC_REF pin, which scales the internal current-limit threshold. The actual trip current depends on the external shunt resistor value used in the motor phase legs and is calculated as I_trip = V_{OC_REF} / R_shunt. The board includes jumper-selectable shunt positions for flexibility.

Does the EV6532-R-00A support sensorless commutation?

No - the board is designed exclusively for Hall-sensor-based commutation. It provides dedicated connectors (CN1, Hall Sensor) and biasing for HA/HB/HC inputs but lacks back-EMF sensing circuitry, comparator networks, or firmware for sensorless algorithms.

Can the MP6532GR IC on this board drive MOSFETs directly without external gate resistors?

No - while the MP6532GR provides gate drive outputs, the board includes 2Ω series gate resistors (R1–R6) for each high- and low-side driver to damp ringing and control slew rate. These resistors are soldered in place and not jumper-configurable.

What is the purpose of the nSLEEP pin, and is it accessible on the board?

The nSLEEP pin (Pin 24 of U1) enables low-power standby mode when pulled low. It is routed to JP9 Pin 2 but left unpopulated by default - users must add a jumper or external control signal to activate sleep functionality.

Are the bootstrap capacitors on the board rated for continuous 60V operation?

Yes - C17, C18, and C19 are 0.1µF/25V X7R ceramics placed close to BSTA/BSTB/BSTC pins, but their voltage rating is sufficient because bootstrap nodes swing only ~12–15V above the high-side source rail. The board's 100V-rated bulk capacitors (C8–C13, C21–C23) handle main rail transients.