STMicroelectronics VN920DSP13TR

Overview

VN920DSP13TR from STMicroelectronics is a high-side power switch IC fabricated in VIPower M0-3 technology, designed for driving grounded loads in automotive and industrial power distribution systems. It delivers 25 A DC output current with 16 mΩ on-state resistance at 10 A and 25°C, features CMOS-compatible input control, integrated open-load detection (both ON and OFF states), short-to-VCC detection, thermal shutdown with automatic restart, and reverse battery protection. It operates across 5.5–36 V supply range and supports ISO 7637-1 transient immunity up to Level IV.

For engineers reviewing the VN920DSP13TR datasheet, VN920DSP13TR pinout, VN920DSP13TR application, or VN920DSP13TR equivalent, this device is selected for robust load switching where diagnostics (status reporting), fault resilience (undervoltage/overvoltage shutdown, ground-loss detection), and low quiescent current (<25 µA off-state) are critical in 12 V/24 V vehicle electrical architectures.

Technical Context

The VN920DSP13TR integrates a vertical power MOSFET with embedded logic driver, current limiter, thermal sensing, and status feedback circuitry. Its active VCC clamp handles low-energy transients per ISO 7637-1 Pulse 1/2/3a/3b/4/5, while internal current limitation (30–75 A depending on temperature) combined with junction temperature monitoring (trip at 150–200°C) enables safe demagnetization of inductive loads.

Open-load detection operates via voltage threshold comparison: ON-state detection triggers when output current falls below 300–700 mA; OFF-state detection activates when output voltage exceeds 1.5–3.5 V. The STATUS pin provides open-drain diagnostic output with clamped voltage (−0.7 to 8 V) and 0.5 V low-level output at 1.6 mA sink current.

Key Specifications

Pinout & Package

Delivered in PowerSO-10™ package: thermally enhanced 10-pin surface-mount housing with exposed die pad for efficient heat dissipation. Case operating temperature range: −40°C to +150°C.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STSPIN250 and TPS27081A, the VN920DSP13TR uniquely combines 25 A capability, full diagnostic coverage (including OFF-state open-load and short-to-VCC), automotive transient immunity, and reverse battery resilience - making it irreplaceable for mission-critical 12 V/24 V load management where functional safety and field reliability are mandatory.

Availability

VN920DSP13TR is available at Aetrix Electronics and suitable for automotive body control modules, commercial vehicle lighting systems, and industrial PLC output stages requiring stable component supply, long-lifecycle support, and traceable sourcing for production programs.

Supply support for VN920DSP13TR 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, designing and manufacturing silicon solutions for automotive, industrial, and power management applications.

The VN920DSP belongs to ST's VIPower family of intelligent power switches - engineered specifically for automotive power distribution and industrial solid-state relay replacement, emphasizing ruggedness, integrated diagnostics, and system-level protection.

FAQ

What is the maximum continuous output current for VN920DSP13TR?

The VN920DSP13TR is rated for 25 A continuous DC output current when mounted on a standard FR-4 PCB with 6 cm² of 35 µm-thick copper. This rating assumes ambient temperature ≤85°C and proper thermal management; derating applies above 85°C ambient or with reduced copper area. Peak current capability reaches 75 A under short-duration overload conditions before thermal shutdown activates.

How does the STATUS pin indicate an open-load condition?

The STATUS pin asserts low (≤0.5 V at 1.6 mA) during open-load events: in ON state when output current drops below 300–700 mA; in OFF state when output voltage rises above 1.5–3.5 V. It also pulls low for overtemperature, undervoltage, overvoltage, and short-to-VCC faults - requiring an external pull-up resistor (typically 10 kΩ) to generate valid logic-high/idle state.

Can VN920DSP13TR operate with a 5 V microcontroller logic interface?

Yes - its INPUT pin accepts CMOS-compatible logic levels: VIH ≥3.25 V and VIL ≤1.25 V with 0.5 V hysteresis, fully compatible with 5 V MCU GPIO. Input leakage is ≤10 µA, and internal clamping limits input voltage to −0.7 V to 8 V, allowing direct connection without level-shifting. A series resistor (e.g., 10 kΩ) is recommended if VCC transients could induce negative spikes on the input line.

What PCB layout practices are required for thermal performance?

To achieve the rated 25 A continuous current and 96.1 W power dissipation, the PowerSO-10™ package must be mounted on ≥6 cm² of 35 µm-thick copper (minimum), preferably connected to internal ground/power planes. Thermal resistance junction-to-ambient drops from 51.3°C/W (0.5 cm² Cu) to 37°C/W (6 cm² Cu). The exposed die pad must be soldered to the copper pour with ≥8 thermal vias (0.3 mm diameter) to inner layers to minimize R_th(j-amb).