Monolithic Power Systems Inc. EVQ6528-V-00A

Overview

EVQ6528-V-00A from Monolithic Power Systems is an AEC-Q100 Grade 1 qualified evaluation board for the MPQ6528 60V H-bridge gate driver IC, supporting 5V–60V input, configurable OCP (0.125V–2.4V), and 100% duty cycle operation. It drives four N-channel MOSFETs in dual half-bridge configuration for automotive actuators and DC brush motor control.

For engineers reviewing the EVQ6528-V-00A datasheet, EVQ6528-V-00A pinout, EVQ6528-V-00A application, or EVQ6528-V-00A equivalent, this board enables rapid validation of MPQ6528-based H-bridge designs under real-world voltage, thermal, and fault conditions with external MCU/FPGA control interface.

Technical Context

The EVQ6528-V-00A implements a complete reference design for the MPQ6528 gate driver IC, featuring dedicated bootstrap capacitor networks (C11/C12), low-side sense resistors (R14–R17), and fault reporting via nFAULT open-drain output. It supports independent PWM control (PWMA/PWMB) and enable signals (ENA/ENB) for precise timing of high-side and low-side FET switching.

Board-level protection includes over-current detection referenced to OC_REF, over-temperature shutdown, and fault latching with active-low nFAULT assertion. The layout separates power, signal, and ground domains per AEC-Q100 layout guidelines, with TO-263 MOSFET footprints and QFN-28 U1 placement optimized for thermal dissipation.

Key Specifications

Availability

EVQ6528-V-00A is available at Aetrix Electronics and suitable for automotive actuator development, DC brush motor control systems, and industrial power converter prototyping requiring stable component supply and AEC-Q100-compliant reference hardware.

Supply support for EVQ6528-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, gate drivers, and motor control solutions for automotive, industrial, and computing markets.

The MPQ6528 product line delivers robust, AEC-Q100 Grade 1 qualified H-bridge gate drivers targeting automotive body electronics, HVAC actuators, and electric power steering subsystems where reliability under wide-input-voltage and high-temperature conditions is critical.

FAQ

What is the purpose of the OC_REF connector on the EVQ6528-V-00A?

The OC_REF connector accepts an external reference voltage (0.125V–2.4V) that sets the over-current protection threshold for the MPQ6528. This voltage is compared against the voltage drop across the low-side sense resistors (R14–R17) to trigger nFAULT when current exceeds the calculated limit.

Can the EVQ6528-V-00A drive MOSFETs directly without additional level-shifting circuitry?

Yes - the MPQ6528 on the board integrates high-side gate drivers with internal charge pumps, enabling direct drive of N-channel MOSFETs in both high-side and low-side positions without external level shifters or isolated supplies.

Is the EVQ6528-V-00A compliant with automotive qualification standards?

Yes - the board hosts the AEC-Q100 Grade 1 qualified MPQ6528GV IC and uses automotive-grade passive components (e.g., 100V-rated ceramics, 63V electrolytics, 100mΩ sense resistors), making it suitable for pre-compliance functional testing in automotive environments.

How is the nSLEEP signal used on this evaluation board?

The nSLEEP signal (accessible via yellow test point) places the MPQ6528 into low-power sleep mode when pulled low, reducing quiescent current to <100µA. It is controlled externally and monitored alongside nFAULT for coordinated system power management.

Does the board support independent control of each half-bridge?

Yes - the CN1 connector provides separate PWMA/PWMB, ENA/ENB, and nSLEEP/nFAULT signals, allowing full independent control of the two half-bridges (OUTA and OUTB) for bidirectional motor control or synchronous rectification applications.

What MOSFETs are populated on the EVQ6528-V-00A?

The board is populated with four AM90N08-10B-T1-PE N-channel MOSFETs (80V, 90A, R_DS(on) = 11mΩ @ V_GS = 10V, Q_G = 60nC), mounted in TO-263 packages with dedicated thermal pads and Kelvin source connections for accurate current sensing.