STMicroelectronics EV-VNH7070BAS

Overview

EV-VNH7070BAS from STMicroelectronics is a preassembled evaluation board for the VNH7070BAS VIPower® M0-7 full-bridge motor driver IC, designed for rapid prototyping of 12 V/24 V automotive DC motors. It integrates the SO-16N packaged H-bridge, on-board 220 µF/35 V bulk capacitor, 33 nF decoupling capacitor, and thermal vias for junction-to-ambient thermal resistance as low as 55 °C/W in high-side drive mode.

For engineers reviewing the EV-VNH7070BAS datasheet, EV-VNH7070BAS pinout, EV-VNH7070BAS application, or EV-VNH7070BAS equivalent, this board enables immediate validation of motor direction control (INA/INB), PWM speed regulation up to 20 kHz, current sensing via MultiSense (CS) output, and brake/standby functionality - all without external component design.

Technical Context

The EV-VNH7070BAS implements a complete hardware reference design for the VNH7070BAS H-bridge, featuring electrically isolated leadframes and symmetrical SO-16N mechanical layout to support manufacturable PCB assembly. It provides direct microcontroller interface through logic-level inputs (INA, INB, PWM, SEL0) and analog current-sense feedback (CS) with 1 kΩ pull-up resistors and 10 kΩ/1.5 kΩ scaling network.

Thermal performance is enhanced by dual-layer FR4 construction (47 × 41 mm, 35 µm Cu, 1.6 mm thickness), 0.5 mm thermal vias spaced at 1.1 mm intervals, and dedicated GND planes across both layers - enabling sustained operation under 15 A peak load current with verified junction-ambient thermal resistance of 55–75 °C/W depending on drive configuration.

Key Specifications

Availability

EV-VNH7070BAS is available at Aetrix Electronics and suitable for automotive body electronics, industrial actuator development, robotics motor control validation, and educational DC motor drive labs requiring stable component supply and repeatable test conditions.

Supply support for EV-VNH7070BAS 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in automotive, industrial, and power management solutions with over 40 years of analog and power IC innovation.

This evaluation board belongs to ST's VIPower® M0-7 evaluation platform family, engineered specifically to accelerate functional safety-compliant motor control development for automotive HVAC, seat adjustment, wiper, and throttle actuation systems.

FAQ

What microcontroller interfaces are supported on the EV-VNH7070BAS?

The board supports direct connection to 3.3 V or 5 V microcontrollers via INA, INB, PWM, SEL0, and CS pins. All logic inputs accept TTL/CMOS levels; CS provides an analog current-proportional output scaled by on-board R5 (10 kΩ) and R6 (1.5 kΩ), requiring no external signal conditioning.

Does the EV-VNH7070BAS include protection against overcurrent or thermal shutdown?

Yes - the onboard VNH7070BAS IC features integrated overcurrent limiting (15 A typ), thermal shutdown, and undervoltage lockout. The evaluation board preserves all internal protections and routes fault indicators (via CS pin behavior and INx state interpretation) to the host controller without added circuitry.

Can the EV-VNH7070BAS drive bidirectional 24 V DC motors?

Yes - it supports full H-bridge operation for reversible 24 V DC motors up to 15 A peak. Direction is controlled by INA/INB logic states; braking is enabled by setting both inputs high; PWM on the PWM pin modulates average voltage across the motor terminals.

Is external heat sinking required for continuous 10 A operation?

No - with ambient temperature ≤60 °C and free-air convection, the board's thermal design (55 °C/W R_thj-amb, thermal vias, copper pour) sustains 10 A continuous without additional heatsink. For extended duty cycles above 60 °C ambient, forced airflow or optional heatsink attachment is recommended.