STMicroelectronics VND920-E

Overview

VND920-E from STMicroelectronics is a dual-channel high-side solid-state relay (HSD) built on VIPower M0-3 technology, designed for automotive and industrial loads with one side grounded. It delivers 35 A per channel, features 16 mΩ R_DS(on) at 10 A and 25°C, integrates analog current sense (K = 4400 ±8% at 10 A), and provides short-circuit, overvoltage (36 V shutdown), undervoltage (4 V shutdown), thermal (150°C trip), and reverse-battery protection in SO-28 Double Island package.

For engineers reviewing the VND920-E datasheet, VND920-E pinout, VND920-E application, or VND920-E equivalent, this device is selected for robust 12/24 V automotive power distribution where precise load monitoring, fault diagnostics, and high-current switching with integrated protection are required - not for low-voltage logic-level control or low-power signal routing.

Technical Context

The VND920-E implements two independent high-side driver channels sharing a common SO-28 Double Island thermally isolated package. Each channel integrates CMOS-compatible input logic, active current limiting (30–75 A), thermal shutdown with hysteresis (150°C trip / 135°C reset), and a proportional analog current sense output referenced to ground.

Protection architecture includes correlated overvoltage clamp (41–55 V) and shutdown (36 V), reverse-battery tolerance via internal diode clamping, loss-of-ground detection, and V_CC transient immunity compliant with ISO 7637-2 Pulse 1, 2a, 3a/b, 4, and 5. Switching is characterized with 50 µs turn-on/off delay into 1.3 Ω resistive load.

Key Specifications

Pinout & Package

Package: SO-28 Double Island (PowerSO-10™ variant), thermally optimized for dual-channel isolation with separate V_CC/GND islands and exposed thermal pads. Mounting requires ≥1 cm² copper per island (35 µm thick) for rated 6.25 W dissipation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-side driver applications.

Compared with VND920-E, STSPIN250 lacks dual-channel integration, current sense, and automotive-grade protections; TPS27082L offers faster switching but sacrifices current measurement fidelity and thermal robustness - making VND920-E uniquely suited for high-reliability, high-current, diagnostic-aware automotive power distribution.

Availability

VND920-E is available at Aetrix Electronics and suitable for automotive body control, industrial PLC output stages, truck lighting systems, and off-highway equipment power distribution requiring stable component supply across extended temperature and transient environments.

Supply support for VND920-E 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 rigorous AEC-Q100 qualification processes.

The VND920-E belongs to ST's VIPower® high-side driver product line, engineered specifically for automotive power distribution units (PDUs) and industrial solid-state relays where integrated protection, diagnostics, and high-current capability are mandatory.

FAQ

What is the maximum continuous output current per channel?

The VND920-E supports 35 A DC output current per channel under specified thermal conditions: mounted on a standard FR-4 PCB with ≥1 cm² copper per island, ambient temperature ≤25°C, and horizontal mounting without forced airflow. Derating applies above 25°C ambient per R_thj-amb = 60 °C/W (one channel ON).

How does the current sense output function and what is its accuracy?

The CURRENT SENSE pin sinks a current I_SENSE = I_OUT / K, where K = 4400 ±8% at 10 A and full temperature range (−40 to +150°C). At 35 A, it delivers ~7.95 mA with ±8% gain error; offset is ≤10 µA. It requires an external pull-up resistor (e.g., 10 kΩ to V_CC) to generate a voltage for ADC reading.

Can VND920-E drive inductive loads like solenoids or motors?

Yes - the device includes active demagnetization control and V_CC-clamp protection during inductive turn-off. For L = 6 mH loads, it safely handles 2 A turn-off current (V_demag = V_CC − 48 V). External flyback diodes are not required, but layout must minimize parasitic inductance in high-current paths.

Is reverse-battery protection implemented internally, and how does it work?

Yes - reverse-battery protection is intrinsic to the VIPower M0-3 process. When V_CC is negative, the internal V_CC-to-GND diode conducts, limiting reverse voltage to −0.3 V and sinking up to −200 mA. No external diode is needed, though a series resistor may be added in the ground path for multi-device configurations per datasheet Figure 7.