STMicroelectronics VN920-B5H13TR

Overview

VN920-B5H13TR 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 18 mΩ R_DS(on), 30 A continuous output current, 36 V V_CC rating, CMOS-compatible input logic, and integrated proportional current sense (K ≈ 4400 A/A). It is used in engine control modules, body electronics, and battery-powered industrial actuators requiring robust short-circuit and thermal protection.

For engineers reviewing the VN920-B5H13TR datasheet, VN920-B5H13TR pinout, VN920-B5H13TR application, or VN920-B5H13TR equivalent, key selection criteria include its 150°C thermal shutdown threshold, ±10% current sense ratio drift over temperature, ISO 7637-2 transient immunity (Class C for pulses 1–4), reverse-battery protection capability, and P2PAK package thermal resistance (R_thj-case = 1.3 °C/W).

Technical Context

The VN920-B5H13TR integrates VIPower™ M0-3 technology to combine power MOSFET switching with analog current sensing and multi-layer protection logic. Its active V_CC clamp (41–55 V) and overvoltage shutdown (36 V) operate independently of external components, while thermal shutdown (T_TSD = 150–200°C) triggers automatic restart after hysteresis (T_R = 135°C).

It implements loss-of-ground detection via internal GND monitoring circuitry and supports proportional analog current sense output (I_SENSE) with 500 µs response delay and 0–4 V full-scale range. Protection states-including undervoltage (V_USD = 3–5.5 V), overcurrent (I_LIM = 30–75 A), and demagnetization clamp (V_demag = V_CC − 41 V)-are reflected in truth-table-driven status behavior without MCU intervention.

Key Specifications

Pinout & Package

Packaged in P2PAK (Power Package), the VN920-B5H13TR uses a thermally enhanced 5-pin surface-mount outline with exposed drain pad for low R_thj-case (1.3 °C/W) and high-current routing.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VN920-B5H13TR, STVN920B5TR offers identical performance but lacks current tape-and-reel availability, while BTS724G trades analog sensing and clamp integration for lower unit cost and simpler diagnostics-requiring additional components to match transient and monitoring capabilities.

Availability

VN920-B5H13TR is available at Aetrix Electronics and suitable for automotive engine control, industrial PLC output stages, and off-highway equipment power distribution requiring stable component supply across extended temperature and transient stress conditions.

Supply support for VN920-B5H13TR 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, specializing in automotive, industrial, and power management ICs with vertical manufacturing and AEC-Q100 qualification expertise.

The VN920-B5H13TR belongs to ST's VIPower™ high-side driver product line, engineered specifically for robust, intelligent load switching in automotive and industrial environments where reliability under voltage transients, thermal stress, and wiring faults is critical.

FAQ

What is the maximum continuous output current rating for VN920-B5H13TR?

The VN920-B5H13TR is rated for 30 A continuous output current under specified thermal conditions: T_j ≤ 150°C, with appropriate PCB copper area (≥6 cm²) and ambient temperature ≤ 85°C. Derating applies above 100°C case temperature per Figure 14 (I_LIM vs T_case), and peak current is limited to 45 A during short-circuit events before thermal shutdown activates.

Does VN920-B5H13TR require an external current sense resistor?

No. The device provides a proportional analog current sense output (I_SENSE) directly from its CURRENT SENSE pin, eliminating the need for an external shunt resistor. With a typical ratio of 4400 A/A, it delivers ~2.27 mA per 10 A load into a 10 kΩ load, producing 0–4 V output. An external R_SENSE (e.g., 3.9 kΩ) sets full-scale range and affects accuracy but is not mandatory for basic operation.

How does the VN920-B5H13TR respond to loss of ground connection?

Upon detection of GND pin disconnection, the VN920-B5H13TR immediately disables the OUTPUT pin and forces the CURRENT SENSE pin to 0 V (per Truth Table, row "Loss of ground"). This fail-safe behavior prevents uncontrolled load activation and is implemented via internal GND monitoring circuitry-not dependent on external components or MCU polling.

Is VN920-B5H13TR compliant with automotive transient standards?

Yes. The device meets ISO 7637-2 requirements for pulses 1–4 (Class C) and pulse 5a (Class E), verified per Tables 12–14. Its integrated V_CC clamp (41–55 V) and active overvoltage shutdown (36 V) provide inherent protection against low-energy transients without external TVS diodes, though pulse 5b (load dump) requires external suppression per application guidance in Section 3.2.