STMicroelectronics EV-VN9012AJ

Overview

EV-VN9012AJ from STMicroelectronics is an evaluation board for the VN9012AJ single-channel smart high-side driver in PowerSSO-16 package, designed for 12 V automotive grounded loads with 3 V/5 V CMOS-compatible control, 12 mΩ on-resistance, 56 A current limit, and multiplexed analog current/voltage/temperature sensing.

For engineers reviewing the EV-VN9012AJ datasheet, EV-VN9012AJ pinout, EV-VN9012AJ application, or EV-VN9012AJ equivalent, this board enables rapid validation of VN9012AJ diagnostics-including short-to-ground, short-to-VCC, open-load (OFF-state), thermal shutdown, and proportional load current feedback-in ADAS power supply and cold-cranking automotive systems.

Technical Context

The EV-VN9012AJ implements a hardware-based evaluation platform for the VN9012AJ VIPower M0-9 IC, supporting real-time fault detection via dedicated pins (FaultRST, SEn, CS) and analog multichannel sensing through the CS pin. It integrates recommended external components per ST's DB4940 data brief, including pull-up resistors (R1, R3), sense resistor (Rsense), and decoupling capacitors (C1, C2).

Board-level connections follow ST's defined CN5–CN10 interface mapping: CN9 carries digital control signals (IN, FaultRST, SEn, In_PullUP), CN8 routes analog diagnostics (MultiSense, VBAT_ADC), and CN5/CN6 provide GND return paths. No microcontroller firmware or configuration is required to observe basic driver behavior and fault responses.

Key Specifications

Availability

EV-VN9012AJ is available at Aetrix Electronics and suitable for automotive ADAS power sequencing, cold-cranking validation, and high-side driver diagnostic development requiring stable component supply and traceable evaluation hardware.

Supply support for EV-VN9012AJ 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 ICs with vertical manufacturing and application-focused design centers.

The VN9012AJ product line belongs to ST's VIPower family of intelligent power switches, engineered specifically for robust, diagnostic-rich 12 V automotive high-side driving in safety-critical and low-voltage environments.

FAQ

What is the purpose of the MultiSense pin (CN8 pin 5) on the EV-VN9012AJ?

The MultiSense pin connects to the VN9012AJ's CS (Current Sense) terminal and delivers time-multiplexed analog signals: proportional load current, supply voltage (VBAT_ADC), and internal die temperature. This enables single-ADC channel monitoring of three critical parameters without external signal conditioning or multiplexing circuitry.

Does the EV-VN9012AJ require external firmware or configuration to operate the VN9012AJ device?

No. The board operates the VN9012AJ in default mode using factory-configured protection thresholds. Digital control (IN, FaultRST, SEn) and analog diagnostics (CS, VBAT_ADC) are accessible via standard headers-no programming, bootloader, or initialization sequence is needed to observe basic switching and fault response.

Can the EV-VN9012AJ be used to validate open-load detection during OFF-state?

Yes. OFF-state open-load detection requires an external pull-up resistor on the IN pin (provided by R1/R3 on CN9), and the board includes test points (TP1–TP10) and LED indicators (LED1/LED2) to visually confirm diagnostic status. Detection is reported via CS pin modulation and confirmed in the VN9012AJ's datasheet timing diagrams.

Is the EV-VN9012AJ compatible with other devices in the VN90xxAJ series?

Yes - the board's PowerSSO-16 footprint and reference design match VN9004AJ, VN9006AJ, VN9008AJ, VN9012AJ, and VN9016AJ. Component values (e.g., Rsense, R_UP) may require adjustment per device-specific current-sense gain and protection thresholds as specified in each device's datasheet.