STMicroelectronics EV-VNH7070AS

Overview

EV-VNH7070AS from STMicroelectronics is a preassembled evaluation board for the VNH7070AS VIPower® M0-7 H-Bridge motor driver IC, designed for rapid prototyping of 12V/24V automotive DC motor control circuits. It integrates the SO-16N-packaged VNH7070AS with recommended passive components (33 nF/220 µF capacitors, 1 kΩ–10 kΩ resistors), supports up to 20 kHz PWM speed control, delivers 15 A current limiting, and provides MultiSense current monitoring via CS pin.

For engineers reviewing the EV-VNH7070AS datasheet, EV-VNH7070AS pinout, EV-VNH7070AS application, or EV-VNH7070AS equivalent, this board enables immediate connection of microcontroller GPIOs (INA/INB/PWM/SEL0), motor load, and 4–28 V supply without external component design-ideal for validating bidirectional drive, brake, and current-sense functionality in automotive seat/mirror/window subsystems.

Technical Context

The EV-VNH7070AS implements a complete interface for the VNH7070AS dual-channel H-bridge, featuring electrically isolated SO-16N mounting with thermal vias (0.5 mm diameter, 1.1 mm spacing) and FR4 double-layer PCB (47 × 41 mm, 35 µm Cu) achieving 55–75 °C/W junction-to-ambient thermal resistance. It routes all critical signals-including OUTA/OUTB high-current paths, GND planes across J1/J2 connectors, and dedicated CS/SEL0 analog sensing lines-to preserve signal integrity during motor commutation.

Board-level design strictly follows ST's VNH7070AS datasheet recommendations: C1 (33 nF) stabilizes logic supply, C2 (220 µF/35 V) buffers input rail, R1–R4 (1 kΩ) pull INA/INB/SEL0/PWM, R5 (10 kΩ) sets CS gain, and R6 (1.5 kΩ) configures MultiSense scaling-enabling direct microcontroller interfacing without external level-shifting or filtering.

Key Specifications

Availability

EV-VNH7070AS is available at Aetrix Electronics and suitable for automotive window lift control, seat position adjustment, and HVAC damper actuation requiring stable component supply, fast-turn prototyping, and production-ready thermal validation.

Supply support for EV-VNH7070AS 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, designing and manufacturing microcontrollers, power ICs, sensors, and analog devices for automotive, industrial, and consumer markets.

The EV-VNH7070AS belongs to ST's VIPower® evaluation board family, engineered specifically to accelerate development of robust, thermally managed H-bridge motor control solutions for automotive body electronics applications.

FAQ

Is EV-VNH7070AS a standalone motor driver IC?

No. EV-VNH7070AS is an evaluation board-not an IC. It hosts the VNH7070AS H-bridge IC in SO-16N package and includes all recommended external components (capacitors, resistors) per ST's datasheet. The board itself has no active silicon beyond the mounted VNH7070AS device.

What microcontroller interfaces are supported on EV-VNH7070AS?

The board exposes INA, INB, PWM, SEL0, and CS pins via J1/J2 headers for direct connection to 3.3 V or 5 V microcontrollers. INA/INB control direction and brake state; PWM sets speed; SEL0 selects MultiSense data; CS outputs proportional motor current-no level-shifting required.

Can EV-VNH7070AS drive brushed DC motors above 15 A continuously?

No. While the VNH7070AS IC features 15 A typical current limit, continuous operation above ~8 A requires forced air cooling or external heatsinking. The board's thermal design (55–75 °C/W) supports short-duration 15 A pulses but not sustained high-current loads without additional thermal management.

Does EV-VNH7070AS include protection against voltage transients?

Yes. The board supports the VNH7070AS's built-in 41 V max transient supply voltage rating. Its input capacitor network (C2 = 220 µF/35 V) and layout minimize impedance, helping absorb load-dump spikes common in 12 V automotive systems-though external TVS diodes are recommended for full ISO 7637-2 compliance.