STMicroelectronics IPS2050HTR

Overview

IPS2050HTR from STMicroelectronics is a dual-channel high-side switch IC designed for industrial load control, featuring 8–60 V supply operation, ≤50 mΩ R_DS(on) at 125 °C, per-channel overload/over-temperature diagnostics via dedicated FLT pins, and smart dual-threshold current limiting (IPKH-X/IPKL-X) for capacitive loads like incandescent lamps. It supports programmable inrush handling and fast demagnetization of inductive loads in PLC I/O modules.

For engineers reviewing the IPS2050HTR datasheet, IPS2050HTR pinout, IPS2050HTR application, or IPS2050HTR equivalent, key selection criteria include channel-specific fault reporting, configurable peak/steady-state current thresholds, thermal shutdown/reset hysteresis (7–20 °C), active clamp voltage (V_CC−72.5 V), and compatibility with PowerSSO-24 packaging for high-power density PCB layouts.

Technical Context

The IPS2050HTR implements independent per-channel protection logic with two temperature sensors (junction and case), enabling staggered shutdown: junction over-temperature (T_JSD = 150–190 °C) triggers immediate channel disable and FLT activation, while case over-temperature (T_CSD = 130 °C) forces global output disable until both T_J and T_C fall below reset thresholds (T_JR = 150 °C, T_CR = 110 °C). This dual-sensing architecture prevents thermal runaway under sustained overload.

Its smart driving capability relies on configurable IPD pins that select between three protection modes: dual-threshold (capacitor-timed IPKH-X activation), single-low (220 kΩ resistor to IN), or single-high (10 kΩ resistor to GND), each defining distinct ILIM-X levels (e.g., 8.8 A typ. or 3.5 A typ.) and hysteresis (0.3 A) to match load transient profiles without external circuitry.

Key Specifications

Pinout & Package

IPS2050HTR is packaged in PowerSSO-24, a thermally enhanced exposed-pad SO package optimized for high-current switching and PCB heat dissipation (R_th(JC) = 0.7 °C/W per channel). The exposed pad must be soldered to a large copper pour for thermal performance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IPS2050HTR, the IPS2050HQTR offers superior thermal dissipation in compact form factors but requires finer-pitch assembly, while the IPS2051HTR halves channel count and package size at the expense of system-level channel density - making IPS2050HTR optimal for balanced 2-channel industrial I/O where PowerSSO-24 mounting and proven field reliability are priorities.

Availability

IPS2050HTR is available at Aetrix Electronics and suitable for programmable logic controllers, vending machines, and industrial PC peripheral I/O requiring stable component supply, long-term lifecycle support, and automotive-grade reliability validation.

Supply support for IPS2050HTR 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 power management, analog, and microcontroller solutions for industrial, automotive, and consumer markets.

The IPS2050 series belongs to ST's intelligent power switch product line, engineered specifically for robust industrial load switching with integrated diagnostics, thermal resilience, and IEC-compliant EMC performance.

FAQ

What is the maximum continuous output current supported by IPS2050HTR?

The IPS2050HTR supports 2.4 A continuous output current per channel at T_J ≤ 125 °C, validated by its ≤50 mΩ R_DS(on) and thermal resistance (R_th(JC) = 0.7 °C/W). This rating assumes proper PCB copper area for the exposed pad and ambient temperature ≤ 85 °C. Exceeding 2.4 A requires derating per the thermal curves in DS13779 Rev 6, page 6.

How does the IPD pin configure overload protection modes?

The IPD pin selects overload behavior: connecting it to GND via a capacitor (470 pF–470 nF) enables dual-threshold mode (IPKH-X/ILIMH-X for inrush, IPKL-X/ILIML-X for steady state); a 220 kΩ resistor to IN disables IPKH-X for low-threshold-only operation; a 10 kΩ resistor to GND disables IPKL-X for high-threshold-only operation. Floating IPD defaults to 1 µs IPKH-X duration.

Can IPS2050HTR drive inductive loads without external flyback diodes?

Yes - IPS2050HTR integrates an active clamp circuit that demagnetizes inductive loads by pulling OUT to V_CC−72.5 V (typ.), dissipating stored energy internally. This eliminates the need for external freewheeling diodes in most 24 V applications, though TVS devices are still recommended for surge suppression per IEC 61000-4-5.

What is the purpose of the two independent temperature sensors?

One sensor monitors junction temperature per channel (T_J) to trigger fast, localized shutdown if T_J exceeds 150–190 °C; the other monitors case temperature (T_C) to detect system-level overheating. Case over-temperature (T_C > 130 °C) forces global output disable until both T_J and T_C fall below their respective reset thresholds (150 °C and 110 °C), preventing thermal cascade failure.