STMicroelectronics IPS2050HTR-32

Overview

IPS2050HTR-32 from STMicroelectronics is a dual-channel high-side switch IC designed for industrial load driving with integrated diagnostics and smart current limiting. It operates from 8 V to 60 V, delivers up to 5.6 A per channel (steady-state), features ≤50 mΩ R_DS(on) at 125 °C, and supports dual-threshold overload protection (IPKH-X up to 19.8 A, ILIMH-X up to 23.2 A) for capacitive loads like incandescent lamps in PLC I/O modules.

For engineers reviewing the IPS2050HTR-32 datasheet, IPS2050HTR-32 pinout, IPS2050HTR-32 application, or IPS2050HTR-32 equivalent, key selection considerations include per-channel fault diagnostics (FLT1/FLT2 current-source outputs), fast demagnetization (V_DEMAG = V_CC−72.5 V), case/junction over-temperature shutdown (T_CSD = 130 °C, T_JSD = 170 °C), and configurable IPD pin logic for adaptive peak-current handling.

Technical Context

This device integrates two independent high-side power switches with embedded current sensing, thermal monitoring, and active clamp circuitry. Each channel includes dedicated junction temperature detection (T_JSD/T_JR) and shared case temperature sensing (T_CSD/T_CR), enabling hierarchical thermal management where junction shutdown occurs first, followed by case-level shutdown if sustained stress persists.

The IPD pin configures three distinct overload response modes: dual-threshold (capacitor-timed IPKH-X → IPKL-X transition), single-low (220 kΩ resistor to INX), or single-high (10 kΩ resistor to GND). Fault reporting uses open-drain current-source FLT pins (I_HFLT = −3 mA typical at V_FLT = 1 V) with 60–400 µs blanking time to reject transient noise.

Key Specifications

Pinout & Package

IPS2050HTR-32 is housed in a PowerSSO-24 package with exposed thermal pad for enhanced heat dissipation. The 24-pin layout features parallel output pins (OUT1: pins 13–20; OUT2: pins 5–12), dual diagnostic outputs (FLT1: pin 21; FLT2: pin 4), and configuration pins (IPD1: pin 22; IPD2: pin 3) enabling flexible overload response tuning.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IPS2050HTR-32, the IPS2050HTR offers identical protection and diagnostics but halves the continuous current capability, making it suitable for space-constrained low-power nodes; STSPIN32F0B provides programmable motor control but lacks integrated power switches and requires significant firmware investment.

Availability

IPS2050HTR-32 is available at Aetrix Electronics and suitable for programmable logic control, vending machine load management, and industrial PC peripheral I/O requiring stable component supply across extended temperature ranges and high EMC resilience.

Supply support for IPS2050HTR-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, with design centers across Europe, Asia, and the Americas, serving industrial, automotive, and consumer markets since 1987.

The IPS2050 family belongs to ST's industrial high-side switch product line, engineered specifically for robustness in harsh electromagnetic environments and thermal cycling - targeting PLCs, factory automation, and building management systems.

FAQ

What is the maximum allowable junction temperature before thermal shutdown activates?

The IPS2050HTR-32 triggers junction thermal shutdown at T_JSD = 170 °C (typical), with reset occurring at T_JR = 150 °C (hysteresis = 20 °C). This threshold is independently monitored per channel and remains active regardless of case temperature status. The device resumes normal operation only after both the affected channel's junction temperature and the overall case temperature fall below their respective reset thresholds.

Can the FLT pins drive an LED directly without external components?

Yes - each FLT pin functions as a current source capable of sinking −3 mA (typical) at 1 V, sufficient to illuminate standard 2 mA LEDs. Connect the LED anode to V_CC and cathode to FLTx, with no series resistor required. However, ensure V_CC does not exceed 60 V to avoid exceeding the FLT pin's 5.5 V absolute maximum voltage rating relative to GND.

How does the IPD pin configuration affect inrush current handling for incandescent lamps?

Connecting IPDx to GND via a 47 nF capacitor sets DPKX ≈ 10 µs, enabling the high-threshold mode (IPKH-X = 19.8 A) during lamp filament cold-start, then automatically switching to low-threshold mode (IPKL-X = 10.5 A) once resistance rises. This prevents false trips during the 10× inrush surge while maintaining tight short-circuit protection during steady-state operation.

Is the PowerSSO-24 package RoHS and REACH compliant?

Yes - the IPS2050HTR-32 in PowerSSO-24 packaging carries STMicroelectronics' ECOPACK2 certification, confirming full compliance with RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006, including restriction of SVHC substances below 0.1% w/w threshold. Full material declarations and test reports are available through ST's official product page.