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

Infineon Technologies AUIRS2124STR

Name: AUIRS2124STR
Brand: Infineon Technologies
SKU: AUIRS2124STR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AUIRS2124STR

Manufacturer:: Infineon Technologies

Category:: Gate Drivers

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

Datasheet:: AUIRS2124STR.pdf

Description:: IC GATE DRVR HIGH-SIDE 8SOIC

Quantity:: RFQ Add To RFQ list

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Inventory:4,530

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Product details

Overview

AUIRS2124STR 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 input 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 logic control is required.

For engineers reviewing the AUIRS2124STR datasheet, AUIRS2124STR pinout, AUIRS2124STR application, or AUIRS2124STR equivalent, this page delivers verified technical context, validated pin functions, confirmed automotive qualification (AEC-Q100), exact timing and voltage specifications, and real-world application mapping - all derived from Infineon's official Rev. 2.1 datasheet and SOIC-8 package documentation.

Technical Context

The AUIRS2124STR implements a monolithic high-voltage IC (HVIC) architecture with latch-immune CMOS process, enabling robust operation under fast dV/dt transients up to ±50 V/ns. Its floating channel supports bootstrap-based high-side switching with VS referenced to VB, and logic inputs are fully compatible with 3.3 V/5 V microcontrollers.

Unlike the AUIRS2123S, the AUIRS2124STR provides inverted output logic (HO low when IN high), eliminating external inverters in complementary half-bridge control schemes. It lacks RESET- functionality but includes integrated UVLO on both VCC and VBS supplies with hysteresis (6.6 V / 7.2 V thresholds).

Key Specifications

Parameter	Value and Actual Design Meaning
V_OFFSET Max	+600 V - supports high-side switching in 400 V DC bus automotive inverters
V_CC Range	10 V to 20 V - enables direct use with standard 12 V/15 V bias rails
I_O+/I_O− (typ)	500 mA - sufficient to drive 10 nC gate charge at ≤100 ns switching times
t_ON/t_OFF (typ)	140 ns - ensures precise timing alignment in >100 kHz SMPS designs
dV/dt Immunity	±50 V/ns - prevents false triggering during fast high-side commutation
UVLO Thresholds	V_BS: 6.6 V / 7.2 V; V_CC: 6.6 V / 7.2 V - provides stable startup and fault recovery
Input Logic	Schmitt-trigger with internal pull-up - eliminates need for external bias resistors

Pinout & Package

Package: 8-Lead SOIC (Small Outline Integrated Circuit), RoHS-compliant, MSL3 per J-STD-020, footprint compatible with industry-standard SOIC-8 PCB layouts.

Pin/Terminal	Circuit Role	Design Meaning
VCC	Low-side supply input	Provides power to logic and level-shifter circuitry; must be decoupled locally
IN	CMOS Schmitt-trigger input	Active-high logic input with internal pull-up; drives HV level shifter
COM	Low-side ground reference	Return path for VCC and input logic; isolated from VS by internal HVIC barrier
VB	Floating high-side supply rail	Connects to bootstrap capacitor top; powers high-side driver stage
VS	Floating source reference	Common node between HO output and power device source; defines high-side offset
HO	High-side gate drive output	Drives N-MOSFET/IGBT gate relative to VS; rated for 600 V offset

Key Features

Feature	Design Value
Inverted output logic	HO = LOW when IN = HIGH - simplifies complementary half-bridge control without external inverter
Floating channel architecture	Supports bootstrap operation up to +600 V VS offset - enables high-side switch in 400 V DC-link systems
Integrated UVLO with hysteresis	Dual-rail detection (VCC & VBS) with 0.6 V hysteresis - prevents erratic operation during brown-out
dV/dt immune design	Withstands ±50 V/ns transients on VS - eliminates false turn-on in noisy motor drive environments
Automotive qualification	AEC-Q100 Grade 1 (−40 °C to +125 °C ambient) - validated for engine bay and traction inverter use

Applications

Automotive Fuel Injection

On-Board Charger (OBC) Half-Bridge

Use Scenario: Driving high-side N-channel MOSFETs in solenoid control circuits for gasoline direct injection.

IC Role / Device Role / Timing Role: High-side gate driver providing precise 140 ns turn-on/turn-off timing synchronized to ECU PWM signals.

Use Value: Enables fast, reliable valve actuation with <1 µs jitter margin and immunity to engine compartment noise.

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

IC Role / Device Role / Timing Role: Floating high-side driver operating at 600 V offset with bootstrap supply, supporting 100 kHz switching.

Use Value: Delivers 500 mA peak gate current to minimize conduction losses while maintaining tight dead-time control.

Automotive HVAC Inverter

48 V Mild Hybrid DC-DC Converter

Use Scenario: Driving high-side IGBTs in 3-phase inverter powering cabin blower motors.

IC Role / Device Role / Timing Role: Phase-inverted logic driver ensuring complementary gate signals without external logic inversion.

Use Value: Reduces BOM count and layout area by eliminating discrete inverters in compact HVAC modules.

Use Scenario: Gate driving high-side MOSFETs in synchronous buck converter stepping 48 V down to 12 V for auxiliary systems.

IC Role / Device Role / Timing Role: High-speed, high-voltage driver with 140 ns propagation matching low-side counterpart for ZVS optimization.

Use Value: Supports >95% efficiency at full load by minimizing switching overlap and gate drive losses.

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), same SOIC-8 pinout and electrical specs	Lacks AEC-Q100 qualification; not suitable for safety-critical automotive systems	Select when cost-sensitive industrial SMPS design requires identical performance without automotive compliance
UCC27531DR	Single-channel, non-floating, 500 mA, 17 ns t_PD, 24 V max V_DD	Only supports low-side or grounded-gate configurations; no high-side bootstrap capability	Choose only for low-side gate driving where 600 V offset is unnecessary and ultra-fast timing is critical

Compared with IRS2124PbF, AUIRS2124STR adds AEC-Q100 qualification and extended temperature support; versus UCC27531DR, it trades speed for high-side isolation capability - making it irreplaceable in 400–600 V floating gate drive roles.

Availability

AUIRS2124STR 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 multi-year production cycles.

Supply support for AUIRS2124STR 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 semiconductors, microcontrollers, and automotive ICs, with leadership in high-voltage gate drivers and silicon carbide solutions.

The AUIRS2124STR belongs to Infineon's automotive-qualified high-side driver product line, engineered specifically for robust, high-reliability gate control in electric powertrain and body electronics subsystems.

FAQ

What is the maximum allowable dV/dt on the VS pin?

The AUIRS2124STR is rated for ±50 V/ns dV/dt on the VS pin, as specified in the Absolute Maximum Ratings table. This immunity is achieved via proprietary HVIC layout and internal level-shifter design, enabling reliable operation in fast-switching inverter applications without false triggering.

Does AUIRS2124STR support bootstrap configuration?

Yes - the AUIRS2124STR is explicitly designed for bootstrap operation. The VB and VS pins form the floating supply interface, allowing connection to a bootstrap capacitor that charges during low-side conduction and powers the high-side driver stage during high-side conduction.

Is there a reset function on AUIRS2124STR?

No - the RESET- input is exclusive to the AUIRS2123S variant. The AUIRS2124STR omits this pin and functionality, relying instead on VCC and VBS undervoltage lockout for fault recovery. Pin 6 (RESET) on AUIRS2123S is unconnected (NC) on AUIRS2124STR.

Can AUIRS2124STR drive SiC MOSFETs?

Yes - its 500 mA peak output current, 140 ns propagation delay, and 600 V offset rating make it suitable for driving low-to-mid gate-charge SiC MOSFETs (e.g., ≤30 nC) in 400 V–600 V systems, provided gate resistor values are selected to limit dv/dt and ensure safe switching transitions.

AUIRS2124STR Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

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

Packaging:: Tape & Reel (TR)

Product Status:: Not For New Designs

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

AUIRS2124STR FAQ

1.How can I place an order for AUIRS2124STR through Aetrix?

Please submit a Request for Quotation (RFQ) for AUIRS2124STR 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 AUIRS2124STR reliable?

The price and inventory of AUIRS2124STR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AUIRS2124STR is usually 5 days.

3.What payment methods are accepted for AUIRS2124STR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AUIRS2124STR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AUIRS2124STR?

AUIRS2124STR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AUIRS2124STR 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 AUIRS2124STR?

For technical support, including AUIRS2124STR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AUIRS2124STR requirements.

6.How does Aetrix verify that AUIRS2124STR is sourced from the original manufacturer or authorized distributors?

All AUIRS2124STR 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 AUIRS2124STR meets industry standards.

7.What is the process for return or replacement of AUIRS2124STR?

All AUIRS2124STR units undergo pre-shipment inspection (PSI). If there is an issue with AUIRS2124STR, 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 AUIRS2124STR part is unused and in its original packaging.

Return procedure for AUIRS2124STR:

1.Submit a request within 90 days.

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

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