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

Infineon Technologies AUIRS2124S

Name: AUIRS2124S
Brand: Infineon Technologies
SKU: AUIRS2124S
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AUIRS2124S

Manufacturer:: Infineon Technologies

Category:: Gate Drivers

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: AUIRS2124S.pdf

Description:: IC GATE DRVR HIGH-SIDE 8SOIC

Quantity:: RFQ Add To RFQ list

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Inventory:1,738

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Product details

Overview

AUIRS2124S from Infineon Technologies is an automotive-qualified high-side gate driver IC designed to control N-channel MOSFETs/IGBTs in floating high-voltage configurations up to +600 V. It features CMOS Schmitt-triggered inputs with internal pull-up, 10–20 V gate drive supply range, 500 mA peak output current, 140 ns typical propagation delay (tON/tOFF), and undervoltage lockout on both VCC and VBS rails. Used in automotive SMPS and inverters where phase-inverted input-to-output logic is required.

For engineers reviewing the AUIRS2124S datasheet, AUIRS2124S pinout, AUIRS2124S application, or AUIRS2124S equivalent, key selection criteria include its 600 V offset tolerance, bootstrap-compatible floating channel, inverting logic behavior, automotive AEC-Q100 qualification, and SOIC8 package compatibility with high dV/dt noise immunity.

Technical Context

The AUIRS2124S implements a monolithic high-voltage IC (HVIC) architecture with latch-immune CMOS process, enabling robust operation under fast transient conditions. Its floating channel uses level-shifting circuitry referenced to VS, supporting gate drive for high-side switches with VB up to +625 V and VS offset up to +600 V.

Input logic is inverting: a high IN signal produces low HO output, and vice versa. Unlike the AUIRS2123S, it omits RESET functionality and replaces the internal pull-down with a 120 kΩ pull-up resistor on IN, ensuring defined logic state at power-up without external biasing.

Key Specifications

Parameter	Value and Actual Design Meaning
V_OFFSET Max	600 V - supports high-side switching in 400 V DC bus automotive inverters and SMPS
I_O+/I_O− Peak	500 mA - drives gate capacitance of medium-power MOSFETs (e.g., 10–50 nF) with low RC delay
t_ON/t_OFF Typ	140 ns - enables >1 MHz switching in resonant topologies with tight timing control
V_CC Range	10–20 V - compatible with standard 12 V/15 V automotive supply rails and LDO outputs
V_BS UVLO Threshold	6.6–9.0 V - prevents erratic gate drive during bootstrap capacitor discharge or startup
dV/dt Immunity	±50 V/ns - suppresses false triggering in noisy motor drive or inverter environments
AEC-Q100 Grade	Qualified - meets automotive reliability requirements for under-hood temperature cycling and lifetime stress

Pinout & Package

Package: 8-Lead SOIC (Small Outline Integrated Circuit), RoHS-compliant, MSL3 per J-STD-020.

Pin/Terminal	Circuit Role	Design Meaning
VCC	Low-side logic supply input	Provides power to internal logic and level shifter; must be decoupled locally
IN	Inverting digital input	CMOS Schmitt-triggered with internal 120 kΩ pull-up; accepts 3.3 V/5 V logic
COM	Logic ground reference	Common return for VCC and input circuitry; isolated from power ground
VB	Floating high-side supply input	Connects to bootstrap capacitor positive terminal; supplies HO stage
VS	Floating source reference	Return node for high-side output; tracks switching node voltage up to +600 V
HO	High-side gate driver output	Drives N-channel MOSFET/IGBT gate; referenced to VS, not COM

Key Features

Feature	Design Value
Inverting input logic	Eliminates need for external inverter in half-bridge complementary drive schemes
Floating channel with 600 V offset	Enables direct high-side drive in buck, boost, and inverter topologies without optocouplers
Integrated VCC and VBS undervoltage lockout	Prevents partial turn-on and shoot-through during supply brown-out or bootstrap failure
120 kΩ internal pull-up on IN	Ensures default high logic state at power-up, simplifying control interface design
dV/dt immune level-shifting	Maintains correct output state even during rapid VS transients (e.g., IGBT switching edges)

Applications

Automotive Fuel Injection

On-Board Charger (OBC) Half-Bridge

Use Scenario: Driving high-side N-channel injector drivers in 12 V/24 V engine control units with PWM duty cycle modulation.

IC Role / Device Role / Timing Role: High-side gate driver providing isolated logic-level-to-power-level translation with precise edge timing.

Use Value: Enables compact, efficient injector control with 140 ns propagation matching across channels to minimize dead-time uncertainty.

Use Scenario: Controlling upper switch in interleaved half-bridge stages of 3.3 kW EV on-board chargers.

IC Role / Device Role / Timing Role: Floating high-side driver synchronizing with low-side counterpart under 600 V DC link conditions.

Use Value: Delivers 500 mA peak gate current to rapidly charge/discharge SiC MOSFET gates while maintaining dV/dt immunity at 50 V/ns.

Automotive HVAC Inverter

48 V Mild Hybrid DC-DC Converter

Use Scenario: Driving high-side IGBTs in 3-phase inverter modules for electric compressor motor control.

IC Role / Device Role / Timing Role: Ruggedized HVIC-based gate driver operating with VS referenced to switching node up to +600 V.

Use Value: Supports AEC-Q100 temperature range (−40 °C to +125 °C ambient) and withstands automotive load-dump transients.

Use Scenario: Gate driving high-side GaN FETs in bidirectional LLC resonant converters interfacing 48 V battery and 12 V systems.

IC Role / Device Role / Timing Role: Fast, inverting high-side driver enabling zero-voltage switching (ZVS) with matched tON/tOFF.

Use Value: 140 ns propagation symmetry reduces timing skew, improving ZVS window and efficiency at 300–500 kHz switching.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
IRS2124PbF	Industrial-grade (non-automotive), identical pinout and electrical specs except AEC-Q100 qualification	Lacks automotive qualification testing; unsuitable for safety-critical vehicle systems	Select when cost-sensitive industrial SMPS or motor drives require same performance without automotive compliance
UCC27531DR	Single-channel low-side driver only; no floating channel or VS reference; max VDD = 24 V	Cannot replace high-side function; requires external level-shifting for high-side use	Choose only for low-side gate drive where isolation and high-voltage tolerance are unnecessary

Compared with IRS2124PbF, AUIRS2124S adds AEC-Q100 qualification and extended temperature support; compared with UCC27531DR, it provides integrated high-side capability and 600 V offset tolerance-making it irreplaceable in true high-side automotive power stages.

Availability

AUIRS2124S is available at Aetrix Electronics and suitable for automotive inverters, on-board chargers, and 48 V mild hybrid DC-DC converters requiring stable component supply across long production lifecycles.

Supply support for AUIRS2124S 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 electronics, and industrial control ICs.

The AUIRS2124S belongs to Infineon's high-voltage IC (HVIC) product line, engineered specifically for robust, AEC-Q100-compliant high-side gate driving in automotive traction, charging, and thermal management systems.

FAQ

What is the logic relationship between IN and HO on the AUIRS2124S?

The AUIRS2124S features inverting logic: a logic-high signal at IN results in a logic-low output at HO, and a logic-low IN produces a logic-high HO. This eliminates external inverters in complementary half-bridge designs. The internal 120 kΩ pull-up ensures IN defaults to high at power-up, making HO default low-safe for most high-side switch configurations.

Can AUIRS2124S drive SiC MOSFETs or GaN HEMTs?

Yes-the AUIRS2124S delivers 500 mA peak gate current and 140 ns propagation delay, suitable for driving moderate gate charge SiC MOSFETs (Qg < 30 nC) and GaN HEMTs in hard-switched or resonant topologies. Its 600 V offset rating and ±50 V/ns dV/dt immunity ensure reliable operation with fast-switching wide-bandgap devices in 400–600 V DC-link applications.

Does AUIRS2124S include a built-in bootstrap diode?

No-the AUIRS2124S does not integrate a bootstrap diode. An external fast-recovery diode (e.g., 1N4148WS or BAS21) must be placed between VCC and VB to charge the bootstrap capacitor during low-side conduction. The IC expects a properly sized capacitor (typically 0.1–1 µF) on VB–VS to sustain gate drive during high-side on-time.

How does the AUIRS2124S handle negative VS transients?

The AUIRS2124S tolerates VS down to −25 V for 0.4 µs transients per datasheet, and its level-shifter is dV/dt immune up to ±50 V/ns. This allows safe operation during inductive kickback or shoot-through events in motor drives and inverters. The internal protection prevents false triggering or latch-up, but sustained VS < −5 V may violate recommended operating conditions and should be avoided via layout and snubbing.

AUIRS2124S Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: 8-SOIC (0.154", 3.90mm Width)

Packaging:: Tube

Product Status:: Obsolete

Programmable:: Not Verified

Driven Configuration:: High-Side

Channel Type:: Single

Number of Drivers:: 1

Gate Type:: IGBT, N-Channel MOSFET

Voltage - Supply:: 10V ~ 20V

Logic Voltage - VIL, VIH:: -

Current - Peak Output (Source, Sink):: 500mA, 500mA

Input Type:: Non-Inverting

High Side Voltage - Max (Bootstrap):: 600 V

Rise / Fall Time (Typ):: 80ns, 80ns

Operating Temperature:: -55°C ~ 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SOIC

AUIRS2124S FAQ

1.How can I place an order for AUIRS2124S through Aetrix?

Please submit a Request for Quotation (RFQ) for AUIRS2124S 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 AUIRS2124S reliable?

The price and inventory of AUIRS2124S are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AUIRS2124S is usually 5 days.

3.What payment methods are accepted for AUIRS2124S?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AUIRS2124S transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AUIRS2124S?

AUIRS2124S orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AUIRS2124S 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 AUIRS2124S?

For technical support, including AUIRS2124S datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AUIRS2124S requirements.

6.How does Aetrix verify that AUIRS2124S is sourced from the original manufacturer or authorized distributors?

All AUIRS2124S 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 AUIRS2124S meets industry standards.

7.What is the process for return or replacement of AUIRS2124S?

All AUIRS2124S units undergo pre-shipment inspection (PSI). If there is an issue with AUIRS2124S, 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 AUIRS2124S part is unused and in its original packaging.

Return procedure for AUIRS2124S:

1.Submit a request within 90 days.

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

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