STMicroelectronics VNI8200XPTR-32

Overview

VNI8200XPTR-32 from STMicroelectronics is an octal high-side smart power solid-state relay with selectable SPI/parallel interface, designed for industrial I/O control. It delivers 1.0 A per channel (VNI8200XP-32 variant), operates from 10.5 V to 36 V, integrates a 100 mA adjustable DC-DC regulator, and features per-channel overload/short-circuit and independent junction/case overtemperature protection in PowerSSO-36 package.

For engineers reviewing the VNI8200XPTR-32 datasheet, VNI8200XPTR-32 pinout, VNI8200XPTR-32 application, or VNI8200XPTR-32 equivalent, key selection considerations include its dual-mode interface (SPI up to 5 MHz or parallel), integrated 4×2 LED matrix for output status indication, fast demagnetization clamp (VCC−45 V), loss-of-GND protection, and compliance with IEC61131-2 and IEC61000-4-x immunity standards.

Technical Context

This monolithic VIPower™ device implements eight independent high-side switches with embedded charge-pump gate drivers, enabling direct connection of resistive, capacitive, and inductive loads to ground. Each channel includes active current limiting (1.0 A typ.), thermal shutdown with restart hysteresis (TTSD = 160–180 °C, TR = 160 °C), and fast turn-off dV/dt control (4 V/µs).

The integrated buck regulator (400 kHz, 0.9 A peak) supplies VREG at 3.3 V or 5 V via FB pin configuration and powers logic, SPI, and the 4×2 LED matrix (COL0/COL1, ROW0–ROW3). Diagnostic outputs (FAULT, TWARN, PG) provide open-drain fault reporting with dedicated thresholds: PG activates below 15.2 V (OFF) and above 17.5 V (ON); FAULT asserts on junction overtemperature or SPI parity/modulo-8 errors.

Key Specifications

Pinout & Package

Package: PowerSSO-36 (10.3 × 10.3 mm), exposed tab connected internally to VCC, optimized for high-power dissipation in industrial PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IPS2050H and VNQ7E100AJTR, VNI8200XPTR-32 uniquely combines eight channels, dual-mode interface, integrated 3.3/5 V DC-DC, and 4×2 LED matrix in one package-reducing BOM count by ≥12 components and enabling full I/O module functionality without external support circuitry.

Availability

VNI8200XPTR-32 is available at Aetrix Electronics and suitable for programmable logic controllers, industrial PC peripheral I/O, and numerical control machines requiring stable component supply, long-term lifecycle assurance, and traceable sourcing for safety-critical deployments.

Supply support for VNI8200XPTR-32 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 strong IP in ruggedized analog and smart-power technologies.

The VNI8200XPTR-32 belongs to ST's VIPower™ high-side driver product line, engineered specifically for industrial automation I/O modules demanding high reliability, integrated diagnostics, and compliance with IEC electromagnetic immunity standards.

FAQ

What interface modes does VNI8200XPTR-32 support, and how are they selected?

VNI8200XPTR-32 supports both SPI and parallel interfaces, selected via the SEL2 pin: high voltage enables SPI mode (using SDI/CLK/SS/SDO pins), while low voltage enables parallel mode (IN1–IN8 directly drive OUT1–OUT8). The SEL2 pin has an internal weak pull-down, ensuring default parallel operation if left unconnected. In SPI mode, SEL1 selects 8-bit or 16-bit frame length, and daisy-chaining is supported with MCU freeze detection.

How does the integrated DC-DC regulator operate, and what output voltages can it deliver?

The integrated buck regulator delivers up to 100 mA at either 3.3 V or 5 V, configured by connecting the FB pin: tie FB to VREG for 3.3 V output, or use an external resistor divider for higher voltages (e.g., 5 V). It features 400 kHz switching, 0.9 A peak inductor current, and built-in short-circuit protection. The DCVDD and VREF pins require 10 nF capacitors, and PHASE/BOOT support internal bootstrap operation without external diodes.

What protection features are implemented per channel, and how do they behave during fault conditions?

Each channel includes active current limitation (1.0 A), fast demagnetization clamp (VCC−45 V), and independent junction thermal shutdown (TTSD = 160–180 °C) with automatic restart (TR = 160 °C). Overload or short-circuit triggers immediate current limiting; sustained fault raises junction temperature until TTSD trips, turning off that channel only. Non-faulted channels remain operational, preserving partial system functionality.

Can VNI8200XPTR-32 drive inductive loads safely, and what design considerations apply?

Yes-VNI8200XPTR-32 is explicitly designed for inductive loads (solenoids, relays, valves) with fast demagnetization clamping (VOUT ≤ VCC−45 V) and dV/dt control (4 V/µs turn-off slope). No external flyback diode is required. For optimal performance, ensure PCB layout minimizes parasitic inductance on OUTx traces, and verify load energy (EOFF) remains within datasheet limits (e.g., ≤3.5 J at 0.9 A, 125 °C ambient) using the provided EOFF vs. IOUT curves.