STMicroelectronics EV-VN7050AS

Overview

EV-VN7050AS from STMicroelectronics is an evaluation board pre-assembled with the VN7050AS single-channel smart high-side driver in SO-8 package, designed for 12 V automotive grounded loads. It supports 4–28 V operating voltage, delivers 30 A current limiting, features 50 mΩ on-state resistance, and provides proportional analog current sense (MultiSense) with diagnostic enable/disable control.

For engineers reviewing the EV-VN7050AS datasheet, EV-VN7050AS pinout, EV-VN7050AS application, or EV-VN7050AS equivalent, this board enables rapid prototyping of automotive load driving with integrated diagnostics-especially for resistive, inductive, and capacitive loads requiring precise current monitoring, thermal shutdown indication, and open-load detection.

Technical Context

The EV-VN7050AS implements ST's VIPower® M0-7 technology to host the VN7050AS IC, which integrates a high-side power switch, precision current-sense amplifier, and multi-fault diagnostic logic. Its architecture supports CMOS-compatible 3 V/5 V input control and active power-limiting during overload conditions.

Board-level design includes dedicated thermal vias (0.5 mm diameter, 1.1 mm spacing), FR4 double-layer PCB (25 × 41.5 mm), and pre-routed connections for V_BAT, microcontroller interface (IN, S_EN), and external sense resistor placement at TP1–TP2 or SMD pads-enabling immediate functional validation without external component design.

Key Specifications

Availability

EV-VN7050AS is available at Aetrix Electronics and suitable for automotive lighting control, engine management actuators, HVAC blower motor drivers, and body electronics modules requiring stable component supply and validated diagnostic integration.

Supply support for EV-VN7050AS 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 vertical manufacturing capabilities.

The EV-VN7050AS belongs to ST's VIPower® evaluation platform family, developed specifically to accelerate adoption of intelligent power switches in automotive ECUs where robustness, diagnostics, and thermal reliability are critical.

FAQ

What is the purpose of the S_EN pin on the EV-VN7050AS board?

The S_EN pin (J3.9) is an active-high diagnostic enable signal compatible with 3 V and 5 V CMOS outputs. When asserted, it activates the MultiSense current-sense function and enables OFF-state open-load detection. When deasserted, it disables both functions-reducing system quiescent current during low-power modes and allowing shared sense resistor usage across multiple channels.

Can the EV-VN7050AS drive inductive loads like fuel injectors or solenoids?

Yes-the board hosts the VN7050AS, which is explicitly qualified for automotive inductive loads. Its integrated protections include fast thermal transient self-limiting, overtemperature shutdown, and short-to-ground indication. The 30 A current limit and 50 mΩ R_ON ensure reliable switching of typical 12 V solenoid and injector loads without external snubbers under standard operating conditions.

How is current sensing implemented on this evaluation board?

Current sensing uses the VN7050AS's MultiSense pin (J3.8), delivering a precision 1:2000 proportional current output. Users must install an external sense resistor (through-hole at TP1–TP2 or SMD on dedicated pads) to convert this current into a measurable voltage. No internal sense resistor is populated; the board provides flexible, user-configurable sensing with selectable gain via R_SENSE value.

Does the EV-VN7050AS support reverse battery protection?

The VN7050AS IC itself does not integrate reverse battery protection; however, the evaluation board design allows implementation using external components as specified in ST's application guidance. The board includes footprints and routing for optional external diodes or MOSFET-based reverse-polarity circuits-enabling users to validate full-system protection schemes before final ECU layout.