Monolithic Power Systems Inc. EV6536-U-00A

Overview

EV6536-U-00A from Monolithic Power Systems is an evaluation board for the MP6536 three-phase brushless DC motor driver IC, supporting 5V–26V supply and delivering ±5.5A peak output current per phase. It implements PWM-controlled commutation, features onboard 3.3V/5V logic power selection, current sense output, fault flag signaling, and integrated protections including OCP, UVP, and OTP.

For engineers reviewing the EV6536-U-00A datasheet, EV6536-U-00A pinout, EV6536-U-00A application, or EV6536-U-00A equivalent, this board enables rapid validation of MP6536-based BLDC motor control in power tools, impact drivers, and PMSM systems with verified thermal shutdown, current limiting, and active-low fault reporting.

Technical Context

The EV6536-U-00A implements a complete reference design for the MP6536 pre-driver IC, interfacing directly with external MOSFET half-bridges (not included). It accepts standard TTL-level PWM inputs on PWMA/PWMB/PWMC and provides dedicated active-low control lines for shutdown (/SHDWN) and standby (/STDBY), plus open-drain fault outputs (/FAULT, FLTB2, FLTB3) with encoded error status.

Board-level protection includes input under-voltage lockout (UVP), over-current detection via 100mΩ sense resistors (R29/R35/R36), and thermal monitoring tied to MP6536's internal OTP. The 7cm × 6.3cm PCB integrates dual LDOs (MPQ2013AGQ-5-Z and MPQ2013AGQ-33-Z) for logic rail generation and op-amps (OPA365AIDBVR) for current sensing signal conditioning.

Key Specifications

Availability

EV6536-U-00A is available at Aetrix Electronics and suitable for power tool development, industrial BLDC motor control validation, and PMSM servo prototyping requiring stable component supply, traceable sourcing, and documented reference design fidelity.

Supply support for EV6536-U-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 core expertise in DC/DC conversion, motor control, and interface solutions.

The MP6536 product line delivers integrated three-phase BLDC pre-driver functionality targeting compact, thermally constrained applications such as cordless power tools and portable appliances-emphasizing robust fault handling and minimal external component count.

FAQ

Does the EV6536-U-00A include power MOSFETs?

No. The board hosts the MP6536 pre-driver IC (U5) but requires external high-side and low-side N-channel MOSFETs to be added by the user. The design provides gate drive routing, bootstrap networks, and sense resistor pads for full half-bridge implementation.

What motor types are supported by this evaluation board?

The EV6536-U-00A supports three-phase brushless DC motors and permanent magnet synchronous motors (PMSMs) with trapezoidal or sinusoidal commutation schemes. It is optimized for sensorless or hall-sensor-based control topologies used in power drills and impact drivers.

How is fault condition decoding implemented on the board?

Fault status is reported via three open-drain pins: /FAULT (active-low general fault), FLTB2, and FLTB3. Their binary combination (e.g., FLTB2=1, FLTB3=0 = OCP) directly encodes over-current, over-temperature, or under-voltage events per MP6536 datasheet Table 1, eliminating need for ADC polling or complex decoding logic.

Can the logic supply voltage be changed during operation?

Yes. The board includes a jumper-selectable configuration (JP1) to route either 3.3 V or 5 V from onboard LDOs (U6/U7) to the MP6536 logic interface and control headers. Switching is safe only when power is off or in standby mode to prevent logic glitching.

Is thermal performance data available for continuous operation?

Per Rev. 1.1 documentation, the board sustains 5.5 A peak current per phase with forced air cooling. At 25°C ambient and no airflow, sustained 3 A RMS per phase is verified before thermal shutdown activation. Layout includes thermal vias under U5 (MP6536DU) and copper pour on inner layers for heat spreading.

What connectors are provided for motor and control interface?

Motor connections use CN2-a 3-pin 5.08 mm pitch header labeled OUTA/OUTB/OUTC. Control signals (PWMA/PWMB/PWMC, /SHDWN, /STDBY, /FAULT) are routed to CN3, a 14-position 2.54 mm pitch connector with silkscreen labeling. Test points are provided for OUTx, FAULTB, and sense resistor voltages.