Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > LED Drivers

Infineon Technologies IRS25401PBF

Name: IRS25401PBF
Brand: Infineon Technologies
SKU: IRS25401PBF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: IRS25401PBF

Manufacturer:: Infineon Technologies

Category:: LED Drivers

Package:: 8-DIP (0.260", 6.60mm)

Datasheet:: IRS25401PBF.pdf

Description:: IC LED DRIVER CTRLR PWM 8DIP

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:3,230

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

IRS25401PBF from Infineon Technologies is a 600 V half-bridge gate driver IC for current-regulated synchronous buck LED drivers, featuring 500 mA source / 700 mA sink gate drive outputs, hysteretic current control via IFB pin with 500 mV internal reference, and SO8 package. It enables high-efficiency, non-isolated LED drivers in street lighting and industrial high-bay fixtures.

For engineers reviewing the IRS25401PBF datasheet, IRS25401PBF pinout, IRS25401PBF application, or IRS25401PBF equivalent, key selection criteria include bootstrap-recharge timing (tWD = 20 μs), dead time (140 ns), VCC UVLO thresholds (8.0–10.0 V turn-on), and high-side floating supply capability up to 600 V.

Technical Context

The IRS25401PBF implements time-delayed hysteretic current regulation using an internal 500 mV bandgap reference and propagation delays (tHO-OFF/tLO-ON = 180–320 ns) to control MOSFET switching in continuous conduction mode. It integrates a bootstrap re-charge timer (tWD = 20 μs, tWDCH = 1.0 μs) to sustain VB-VS bias under variable duty cycles.

Its dual-level UVLO (VCCUV+ = 9.0 V typ., VBSUV+ = 7.5 V typ.) ensures robust startup and fault recovery, while fixed 140 ns dead time prevents shoot-through between HO and LO outputs driving external N-channel MOSFETs in high-voltage buck topologies.

Key Specifications

Parameter	Value and Actual Design Meaning
V_B Rating	600 V max floating high-side bias - supports direct connection to 400 V DC bus without level-shifting circuitry
Gate Drive	500 mA source / 700 mA sink - drives standard 10 nC gate charge MOSFETs at ≤500 kHz
Switching Frequency	Up to 500 kHz - determined by inductor value, input/output voltage, and IFB RC filter delay
V_IFBTH	455–540 mV threshold - sets average output current via I_OUT(AVG) = V_IFBTH/R_CS
Dead Time	140 ns fixed - prevents simultaneous conduction of high- and low-side MOSFETs
t_WD	20.0 μs bootstrap re-charge wait time - forces periodic LO activation to replenish C_BOOT
V_CCUV+	8.0–10.0 V - defines minimum bias supply for reliable startup and operation

Pinout & Package

IRS25401PBF is housed in an SO8 (Small Outline, 8-pin) surface-mount package with exposed thermal pad per Infineon's standard marking and thermal design guidelines.

Pin/Terminal	Circuit Role	Design Meaning
1 VCC	Bias supply input	Provides power to logic and low-side driver; clamped internally at 15.6 V typical
2 COM	Ground reference	0 V return for VCC, ENN, IFB, and LO circuits
3 IFB	Current feedback input	Compares shunt voltage against 500 mV reference to regulate LED current
4 ENN	Enable/disable input	Active-low logic input: high = disable (HO=low, LO=low); low = enable
5 LO	Low-side gate drive output	Drives N-MOSFET source to COM; 700 mA sink capability
6 VS	Floating high-side return	Half-bridge node reference for HO; must be connected to source of high-side MOSFET
7 HO	High-side gate drive output	Drives N-MOSFET gate referenced to VS; 500 mA source capability
8 VB	High-side floating supply	Connects to bootstrap capacitor (C_BOOT) to generate V_BS for HO drive

Key Features

Feature	Design Value
Hysteretic current regulation	Eliminates need for external oscillator or error amplifier; enables simple, stable LED current control with minimal components
Integrated bootstrap re-charge timer	Forces periodic LO activation (t_WD = 20 μs) to maintain VB-VS bias - prevents V_BS collapse during extended high-duty cycles
Dual UVLO protection	Independent VCC and VBS under-voltage lockouts ensure safe startup and fault recovery in high-voltage bus applications
Fixed dead-time insertion	140 ns non-overlap window between HO and LO transitions - guarantees shoot-through immunity without external timing circuitry

Applications

Street Lighting Driver

Industrial High-Bay LED Fixture

Use Scenario: Constant-current driver for 40–150 W LED arrays powered from 300–450 V DC bus.

IC Role / Device Role / Timing Role: Half-bridge gate driver controlling synchronous buck stage; regulates LED current via IFB feedback loop with 500 mV reference.

Use Value: Enables >92% efficiency by replacing freewheeling diode with low-R_DS(on) MOSFET and eliminates external PWM controller.

Use Scenario: Dimmable, high-reliability LED driver for warehouse lighting operating in ambient temperatures up to 85°C.

IC Role / Device Role / Timing Role: Hysteretic current controller with integrated bootstrap management; supports 0–100% analog dimming via IFB pin voltage scaling.

Use Value: Reduces BOM count by integrating gate drive, UVLO, dead time, and re-charge logic - simplifies thermal design in enclosed fixtures.

UV-C Disinfection Module

Outdoor Signage Power Supply

Use Scenario: Current-stable driver for pulsed UV-C LEDs requiring precise peak current control and fast transient response.

IC Role / Device Role / Timing Role: Fast-propagation gate driver (t_HO-OFF = 180 ns) enabling tight current ripple control in short-pulse (<100 μs) operation.

Use Value: Maintains ±3% current accuracy across line/load variations without compensation network - critical for germicidal efficacy consistency.

Use Scenario: Weather-resistant LED driver for digital billboards powered from rectified AC mains with wide input range.

IC Role / Device Role / Timing Role: 600 V-rated high-side driver supporting direct connection to 350 V DC link; withstands surge transients per IEC 61000-4-5 Level 3.

Use Value: Eliminates isolated gate drive complexity while meeting long-lifetime requirements (>50,000 hrs) through robust thermal design in SO8 package.

Equivalent & Alternatives

The following parts are listed as comparable options for similar synchronous buck LED driver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
IRS25411SPBF	Same pinout and function; differs only in tape-and-reel packaging and minor marking - electrically identical	No functional difference; both qualified for same JEDEC20/22 test conditions	Select based on logistics preference: IRS25401PBF is tube-packaged; IRS25411SPBF is tape-and-reel
UCC27211D	600 V half-bridge driver but lacks integrated hysteretic controller, IFB input, and bootstrap re-charge timer	Requires external current sense amplifier, comparator, and timing circuitry to replicate IRS25401PBF functionality	Choose UCC27211D only when full system-level control flexibility is needed; IRS25401PBF offers faster time-to-market for LED-specific designs

Compared with IRS25411SPBF, IRS25401PBF provides identical performance in tube format for prototyping and low-volume builds; versus UCC27211D, it delivers complete LED current regulation in one IC - reducing design effort, component count, and layout area.

Availability

IRS25401PBF is available at Aetrix Electronics and suitable for street lighting drivers, industrial high-bay LED fixtures, and UV-C disinfection modules requiring stable component supply and long-term manufacturability.

Supply support for IRS25401PBF 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 German semiconductor manufacturer specializing in power management, automotive, and industrial control ICs, with global manufacturing and quality certification to ISO 9001 and IATF 16949.

The IRS254xx family targets high-voltage, current-regulated LED drivers - designed to replace discrete gate drive + controller solutions with integrated, JEDEC-qualified ICs for reliability-critical lighting applications.

FAQ

What is the recommended bootstrap capacitor value and type for IRS25401PBF?

A 0.1 μF ceramic capacitor rated for 25 V is specified in the datasheet for C_BOOT. It must be placed close to pins VB and VS with minimal trace inductance. The bootstrap diode D_BOOT requires 600 V rating, 1 A average current, and fast recovery (t_rr < 50 ns) to ensure reliable V_BS generation across temperature and load.

How does the IRS25401PBF achieve zero-voltage switching (ZVS) in buck topology?

The IRS25401PBF itself does not implement ZVS control logic. Instead, it supports ZVS operation when used with external resonant tank components (e.g., auxiliary inductors/capacitors) and proper timing of HO/LO transitions. Its fixed 140 ns dead time and fast propagation delays (180 ns) enable precise gate timing necessary for external ZVS circuit implementation.

Can IRS25401PBF be used with PWM dimming, and how is it implemented?

Yes - PWM dimming is supported by applying a logic-level PWM signal to the ENN pin. When ENN is high, both HO and LO are forced low, halting switching and extinguishing the LED string. The minimum off-time must exceed t_WD (20 μs) to allow full bootstrap recharge before next enable cycle, ensuring consistent startup behavior.

What is the maximum allowable dV/dt at the VS pin, and why is it critical?

The absolute maximum dV/dt at VS is ±50 V/ns. Exceeding this risks false triggering of the level-shift circuitry due to capacitive coupling, causing erratic HO/LO switching or latch-up. Layout best practices require minimizing loop area between VS, VB, and HO; using ground planes beneath high-di/dt paths; and avoiding routing sensitive traces near VS.

IRS25401PBF Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: 8-DIP (0.260", 6.60mm)

Packaging:: Tube

Product Status:: Obsolete

Type:: DC DC Controller

Topology:: Step-Down (Buck)

Internal Switch(s):: No

Number of Outputs:: 1

Voltage - Supply (Min):: 8V

Voltage - Supply (Max):: 16.6V

Voltage - Output:: -

Current - Output / Channel:: -

Frequency:: 500kHz

Dimming:: PWM

Applications:: -

Operating Temperature:: -25°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: 8-PDIP

IRS25401PBF FAQ

1.How can I place an order for IRS25401PBF through Aetrix?

Please submit a Request for Quotation (RFQ) for IRS25401PBF on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for IRS25401PBF reliable?

The price and inventory of IRS25401PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRS25401PBF is usually 5 days.

3.What payment methods are accepted for IRS25401PBF?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRS25401PBF transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IRS25401PBF?

IRS25401PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IRS25401PBF order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for IRS25401PBF?

For technical support, including IRS25401PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRS25401PBF requirements.

6.How does Aetrix verify that IRS25401PBF is sourced from the original manufacturer or authorized distributors?

All IRS25401PBF products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that IRS25401PBF meets industry standards.

7.What is the process for return or replacement of IRS25401PBF?

All IRS25401PBF units undergo pre-shipment inspection (PSI). If there is an issue with IRS25401PBF, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The IRS25401PBF part is unused and in its original packaging.

Return procedure for IRS25401PBF:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…

2026-08-11 LDO Regulator: Dropout Voltage, Noise, PSRR and Power Dissipation

LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…

2026-08-06 Conditional Access Module: CAM, CI/CI+ and DVB Security

Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…

2026-08-03 Electronic Component Obsolescence: EOL Risks, Replacement Options and Last-Time Buy Strategy

Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.

2026-07-29 18650 Battery: Voltage, Capacity, Charging and Pack Design

18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…

2026-07-27 Hall Effect Sensor: Working Principle, Types, Circuits and Applications

Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…

2026-07-20 Product Change Notification (PCN) in Electronic Components: Meaning and Supply Chain Response

Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…

2026-07-19 Blend Door Actuator: Symptoms, Location, Reset and Replacement Guide

A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…

2026-07-17 Raspberry Pi Alternatives: Chip-Level Comparison, Compatibility and Replacement Guide

Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…