STMicroelectronics IPS1025HTR-32

Overview

IPS1025HTR-32 from STMicroelectronics is a single-channel high-side switch IC designed for industrial load control, featuring 8 V to 60 V supply operation, 5.6 A steady-state output current, ≤25 mΩ R_DS-ON at T_J = 125 °C, dual-threshold overload protection (IPKH = 25.1 A, ILIMH = 17.9 A typ.), and integrated junction/case over-temperature shutdown. It drives resistive, capacitive (e.g., incandescent lamps), and inductive loads in PLC I/O modules and CNC machine tool interfaces.

For engineers reviewing the IPS1025HTR-32 datasheet, IPS1025HTR-32 pinout, IPS1025HTR-32 application, or IPS1025HTR-32 equivalent, key selection criteria include its VFQFPN-48L 8×6×0.9 mm package, smart capacitive-load driving via IPD-configurable thresholds, fast demagnetization (V_DEMAG = V_CC−72.5 V), dual diagnostic pins (FLT1/FLT2), and compliance with IEC 61000-4-2/4/5.

Technical Context

This device implements a thermally robust high-side power switch with two independent thermal protection mechanisms: junction temperature sensing (T_JSD = 170 °C, T_JR = 150 °C) and case temperature monitoring (T_CSD = 130 °C, T_CR = 110 °C), ensuring fail-safe shutdown under sustained overload. Its active clamp circuit enables fast demagnetization of inductive loads by pulling OUT to V_CC−V_DEMAG, dissipating stored energy across internal switch and load resistance.

The IPD pin configures three distinct overload response modes: dual-threshold (capacitive load handling with time-limited IPKH), single-low (IPKL = 13.1 A, ILIML = 8.0 A), or single-high (IPKH only). Diagnostic outputs FLT1 (over-temperature) and FLT2 (overload) are open-drain current sources with 200–550 µs blanking time and 6–8 V clamp voltage, enabling direct MCU fault detection without external components.

Key Specifications

Pinout & Package

IPS1025HTR-32 uses the VFQFPN-48L (8 mm × 6 mm × 0.9 mm) package with exposed thermal pad for enhanced power dissipation (R_th(JC) = 1.0 °C/W). Pin functions are validated per DS13780 Rev 7, Table 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IPS1025HTR and STLD201MTR, the IPS1025HTR-32 delivers higher current capacity, configurable overload response, and dual-point thermal monitoring-making it uniquely suited for mission-critical industrial actuators requiring both robustness and intelligent fault management.

Availability

IPS1025HTR-32 is available at Aetrix Electronics and suitable for programmable logic control, numerical control machines, and industrial PC peripheral power management requiring stable component supply across extended temperature ranges (−40 °C to 150 °C case).

Supply support for IPS1025HTR-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 broad manufacturing and quality certifications.

The IPS1025 family belongs to ST's industrial high-side switch product line, engineered specifically for robust load control in harsh electromagnetic environments-emphasizing thermal resilience, IEC-compliant immunity, and intelligent diagnostics for factory automation systems.

FAQ

What is the maximum allowable junction temperature before shutdown?

The IPS1025HTR-32 initiates junction thermal shutdown at T_JSD = 170 °C (typ.), with automatic recovery once junction temperature falls below T_JR = 150 °C. This hysteresis prevents oscillation during thermal transients and is verified per DS13780 Rev 7, Table 11. The device sustains continuous operation up to 125 °C junction temperature under normal load conditions.

How does the IPD pin configure overload protection modes?

The IPD pin selects among three overload configurations: connecting to GND via a capacitor (470 pF–470 nF) enables dual-threshold mode (IPKH = 25.1 A, IPKL = 13.1 A); a 220 kΩ resistor to IN forces single-low mode (IPKL only); a 10 kΩ resistor to GND enables single-high mode (IPKH only). Floating IPD defaults to 1 µs IPKH duration, as specified in Section 7.3 of DS13780 Rev 7.

Can FLT1 and FLT2 be connected directly to a 3.3 V microcontroller GPIO?

Yes-both FLT1 and FLT2 are open-drain current-source outputs with 6–8 V clamp voltage and −4.0 mA sink capability at 1 V. A 10 kΩ pull-up to 3.3 V yields ~3.3 V logic HIGH and ~0.4 V logic LOW, meeting standard CMOS input thresholds. Blanking time (200–550 µs) prevents false triggering from switching noise, per Table 8 in DS13780 Rev 7.

What is the purpose of the active clamp function during inductive load turn-off?

The active clamp pulls the OUT pin to V_CC−72.5 V during inductive turn-off, creating a controlled discharge path that accelerates current decay without external components. This limits voltage overshoot across the load, reduces EMI, and avoids destructive voltage spikes-critical for solenoids and relays in CNC and PLC applications, as detailed in Section 8 of DS13780 Rev 7.