Infineon Technologies IR5001STRPBF

Overview

IR5001STRPBF from Infineon Technologies is a universal active ORing controller and N-channel MOSFET driver for redundant DC power systems. It provides 130 ns typical turn-off delay, 3 A peak gate drive current, and operates with Vline from 36 V to 100 V. Designed for carrier-class telecom equipment, it enables reverse polarity protection and input/output ORing in -48 V/-24 V and +24 V/+48 V systems.

For engineers reviewing the IR5001STRPBF datasheet, IR5001STRPBF pinout, IR5001STRPBF application, or IR5001STRPBF equivalent, key selection criteria include asymmetric comparator offset (-4.0 mV typ), integrated 70 kΩ input resistors, 100 V continuous input clamp rating, UVLO thresholds (9.6 V ON / 7.2 V OFF), and FETst/FETch status signaling for redundancy monitoring.

Technical Context

The IR5001STRPBF integrates a high-speed comparator with asymmetrical offset (-4.0 mV) and 31 mV typical hysteresis to prevent light-load oscillation. Its internal shunt regulator delivers 12.5 V (typ) at Vcc from Vline inputs of 36–100 V, eliminating need for external bias supplies in telecom bus applications.

All comparator inputs (INP, INN, Vline) feature integrated 70 kΩ high-voltage resistors and clamps rated for continuous 100 V operation. The output stage drives N-channel MOSFET gates directly with 11.5 V high-level output and 0.1 V low-level output at 100 mA sink capability.

Key Specifications

Pinout & Package

IR5001STRPBF is housed in an SO-8 package (5.0 mm × 6.0 mm, 1.25 mm height) with standard gull-wing leads and Pb-free (RoHS-compliant) finish.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar active ORing controller applications.

Compared with LM5050-1MMX/NOPB and TPS2412DR, the IR5001STRPBF uniquely combines 100 V continuous input tolerance, 130 ns turn-off, integrated status signaling, and self-biasing capability - making it the only solution qualified for GR-1089-compliant -48 V telecom ORing without external protection or bias components.

Availability

IR5001STRPBF is available at Aetrix Electronics and suitable for carrier-class telecom power redundancy, DC-DC output ORing, and reverse polarity protection requiring stable component supply across extended temperature ranges (-40°C to +125°C).

Supply support for IR5001STRPBF 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

Infineon Technologies is a global semiconductor leader specializing in power management, automotive, and industrial control solutions, with headquarters in Munich, Germany.

The IR5001STRPBF belongs to Infineon's Active ORing Controller product line, engineered specifically for high-reliability redundant power architectures in telecommunications infrastructure and mission-critical power systems.

FAQ

What is the minimum Vline voltage required to operate the IR5001STRPBF?

The IR5001STRPBF requires a minimum of 25 V applied to the Vline pin to bias the internal shunt regulator and ensure proper operation. Below this threshold, the device must be powered via the Vcc pin using an external bias resistor. This design allows flexible deployment across telecom (36–75 V) and broader industrial (25–100 V) input rails while maintaining regulation integrity.

How does the asymmetrical comparator offset improve system stability?

The IR5001STRPBF's comparator has a typical offset of -4.0 mV (centered below zero) and 31 mV hysteresis. This asymmetry ensures the device remains latched in the "on" state during low-current forward conduction, preventing chatter or oscillation when load current drops near zero - a critical behavior for stable ORing in lightly loaded telecom backplanes.

Can the IR5001STRPBF drive high-gate-charge MOSFETs effectively?

Yes - the IR5001STRPBF delivers 3 A peak sink current at Vout, enabling rapid turn-off of N-channel MOSFETs with gate charges up to 100 nC. Combined with its 130 ns propagation delay and 100 mA steady-state sink capability, it maintains tight control over FET switching even with high-Ciss devices commonly used in 48 V ORing applications.

What is the function of the FETst and FETch pins in redundancy monitoring?

FETst is an open-drain status output that goes low when the controlled N-FET is conducting; FETch is a dedicated input that, when pulled low, forces FETst into a known state. Together, they enable inter-controller handshaking in multi-rail ORing systems - allowing master/slave arbitration, fault isolation, and coordinated hot-swap sequencing without additional logic circuitry.