STMicroelectronics VN920SO13TR

Overview

VN920SO13TR from STMicroelectronics is a single-channel high-side solid-state relay (HSD) designed for automotive and industrial load switching with ground-referenced loads. It features 16 mΩ R_DS(on), 30 A continuous output current, 36 V V_CC rating, integrated proportional current sense (K ≈ 4400), and comprehensive protection including thermal shutdown (T_TSD = 150°C), undervoltage/overvoltage shutdown, short-circuit current limiting, and reverse battery protection. It is used in 12 V/24 V vehicle body control modules for driving lamps, solenoids, and actuators.

For engineers reviewing the VN920SO13TR datasheet, VN920SO13TR pinout, VN920SO13TR application, or VN920SO13TR equivalent, key selection considerations include SO-16L package thermal performance (R_thj-amb = 65 °C/W on 0.5 cm² Cu), analog current sense accuracy (±10% ratio drift over −40°C to +150°C), and ISO 7637-1 pulse immunity (Class C up to Level IV).

Technical Context

The VN920SO13TR implements a VIPower M0-3 monolithic high-side switch with active V_CC clamp (41 V typical), internal current limitation (30–75 A depending on V_CC and temperature), and thermal shutdown with 15°C hysteresis. Its analog current sense output delivers I_SENSE = I_OUT/K where K ranges from 3300 to 6000, calibrated at multiple load points (1 A, 10 A, 30 A) and temperatures.

Protection logic integrates loss-of-ground detection (auto-shutdown on GND disconnection), reverse battery tolerance (−0.3 V V_CC min), and demagnetization clamping (V_demag = V_CC − 41 V). Switching behavior is characterized by 50 µs turn-on/turn-off delays and controlled dV/dt slopes (300–700 V/ms) under 1.3 Ω resistive load conditions.

Key Specifications

Pinout & Package

Package: SO-16L (16-lead small-outline package, 10.1 × 10.65 mm, 1.27 mm pitch), optimized for surface-mount assembly and moderate power dissipation (P_TOT = 8.3 W at T_C ≤ 25°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STSPIN32F0B and TPS27081A, the VN920SO13TR uniquely combines 30 A drive capability, SO-16L thermal performance, and calibrated analog current sensing - making it the only option among the three qualified for high-current, diagnostic-enabled automotive body electronics.

Availability

VN920SO13TR is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC output stages, truck lighting systems, and off-highway equipment power distribution requiring stable component supply across extended temperature and voltage ranges.

Supply support for VN920SO13TR 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 VN920SO13TR belongs to ST's VIPower family of intelligent power switches, engineered specifically for automotive-grade high-side load control with integrated diagnostics, protection, and robustness against harsh vehicle electrical environments.

FAQ

What is the maximum continuous output current rating for VN920SO13TR?

The VN920SO13TR is rated for 30 A continuous output current under specified thermal conditions (T_C ≤ 25°C, SO-16L package on 0.5 cm² copper). Actual usable current depends on PCB layout, ambient temperature, and airflow; derating to 22 A is typical at T_A = 85°C with 6 cm² copper.

How does the current sense function work, and what external components are required?

The CSENSE pin delivers a proportional current I_SENSE = I_OUT/K (K ≈ 4400 typ.). An external pull-up resistor (e.g., 3.9 kΩ to V_CC) converts this to a measurable voltage (e.g., 4 V at 10 A). No op-amp or ADC is required for basic monitoring, though signal conditioning may be added for precision.

Does VN920SO13TR support reverse battery conditions, and how is protection implemented?

Yes - the device tolerates −0.3 V on V_CC and supports external reverse-battery protection networks (resistor or diode in GND line). Internal circuitry prevents latch-up and ensures safe shutdown during polarity reversal, but external components are needed for full −12 V or −24 V survivability per ISO 16750-2.

What is the thermal resistance from junction to ambient for the SO-16L package?

R_thj-amb is 65 °C/W when mounted on a standard single-sided FR-4 board with 0.5 cm² of 35 µm-thick copper (per datasheet note). With 6 cm² copper, it improves to 45 °C/W. These values assume natural convection; forced airflow or thermal vias further reduce effective thermal resistance.