Monolithic Power Systems Inc. EV6605C-R-00A

Overview

EV6605C-R-00A from Monolithic Power Systems is a 4-channel low-side driver evaluation board built around the MP6605C QFN-24 IC, supporting I²C-configurable control of inductive loads up to 60V supply and 1.5A per channel, with integrated HS clamp diodes and OCP/UVLO/OT protection - used for unipolar stepper motor and solenoid drive validation.

For engineers reviewing the EV6605C-R-00A datasheet, EV6605C-R-00A pinout, EV6605C-R-00A application, or EV6605C-R-00A equivalent, this board enables rapid functional verification of MP6605C's I²C register interface, fault reporting via NFLT/nFAULT, dual-supply operation (3.3V/5V logic + 4.5–60V power), and thermal-safe switching of inductive loads.

Technical Context

The EV6605C-R-00A implements the MP6605C's full I²C command set (7-bit address with R/W bit, 8-bit data byte with 4-bit control/status field) and supports two VIN configurations: TVS-protected 4.5–30V mode (VIN–VCLAMP tied via SMAJ24A) or direct 4.5–60V mode (VCLAMP connected to VIN). It exposes all four OUTx terminals, NFLT open-drain fault signal, and physical address selection via S2 dial switch.

Board-level design includes input filtering (100μF electrolytic + 4.7μF ceramic), output RC snubbers (1kΩ + 100nF), LED-based fault indication (BL-HUE35A-AV-TRB), and standardized 2.54mm connectors (CN1, JP1, P1) for I²C, power, and load interfacing - enabling direct integration into test benches without custom cabling.

Key Specifications

Availability

EV6605C-R-00A is available at Aetrix Electronics and suitable for stepper motor validation, solenoid actuator prototyping, and industrial I²C-controlled load switching applications requiring stable component supply and traceable reference hardware.

Supply support for EV6605C-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 power management ICs, with expertise in DC/DC converters, motor drivers, and interface solutions for industrial and automotive markets.

The EV6605C-R-00A belongs to MPS's evaluation board product line, designed specifically to accelerate adoption of the MP6605C low-side driver by providing validated layout, GUI-enabled configuration, and fault-debugging infrastructure for inductive load control systems.

FAQ

What power supply configurations does the EV6605C-R-00A support?

The board supports two VIN modes: (1) 4.5–30 V with SMAJ24A TVS diode between VIN and VCLAMP; (2) 4.5–60 V with VCLAMP directly tied to VIN. VCC logic supply must be 3.3 V or 5 V, applied separately to the VCC/GND terminals. Both supplies are galvanically isolated on-board.

How is device addressing configured on the EV6605C-R-00A?

Physical I²C address is set using the 4-bit dial switch S2, which maps to bits A3–A0 of the 7-bit slave address. The fixed prefix is '010', so valid addresses range from 0x40 (0100000) to 0x4F (0101111). No external pull-ups are required - onboard 1 kΩ resistors bias SDA/SCL.

Does the board provide access to all MP6605C control and status registers?

Yes - the GUI software communicates full 8-bit data bytes to the MP6605C, where bits D7–D4 are read-only status flags (channel ON/OFF states) and D3–D0 are writeable control bits (individual LS-FET enable/disable). All register reads and writes occur over the CN1 I²C header.

Can the EV6605C-R-00A drive inductive loads without external flyback components?

No - while the MP6605C integrates internal HS clamp diodes, the board requires external freewheeling paths for inductive loads. Each OUTx terminal must connect to a load with return path through VCLAMP (or external diode), as confirmed by schematic Figure 3 and test setup in Section 6.

Is thermal performance validated on this evaluation board?

Yes - the board layout includes exposed thermal pad soldering for the MP6605C QFN-24 package, verified in PCB layer drawings (Figures 4–6), and thermal shutdown behavior is demonstrated in EVB Test Results (Section 6) under sustained 1.5 A per channel loading at TA = 25°C.

What GUI software is compatible with the EV6605C-R-00A?

MPS provides the official "MP6605C GUI" tool (v1.0, Windows-based), distributed with the EV6605C-R-00A documentation bundle. It supports real-time register read/write, fault logging, and waveform capture via USB-to-I²C adapter connected to CN1 - no firmware update or driver installation is required.