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Infineon Technologies AUIRS2123STR
- Part No.:
- AUIRS2123STR
- Manufacturer:
- Infineon Technologies
- Category:
- Gate Drivers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AUIRS2123STR.pdf
- Description:
- IC GATE DRVR HIGH-SIDE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,288
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Product details
Overview
AUIRS2123STR 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-down, in-phase output logic, 10–20 V gate drive supply, 500 mA peak output current, and integrated undervoltage lockout on both VCC and VBS rails - deployed in automotive fuel injectors and SMPS half-bridge topologies.
For engineers reviewing the AUIRS2123STR datasheet, AUIRS2123STR pinout, AUIRS2123STR application, or AUIRS2123STR equivalent, key selection criteria include its 600 V offset tolerance, 140 ns typical propagation delay, RESET- input compatibility with 3.3 V/5 V logic, latch-immune HVIC construction, and SOIC-8 automotive qualification per AEC-Q100.
Technical Context
The AUIRS2123STR integrates a floating high-side channel using proprietary HVIC technology, enabling operation with VS referenced up to +600 V relative to COM. Its level-shifting architecture tolerates −50 to +50 V/ns dV/dt transients without false triggering.
It implements dual UVLO detection (VCC and VBS), pulse-filtered input logic, and a reset-controlled RS latch that forces HO low upon RESET- assertion. The output stage delivers ±500 mA peak current into capacitive loads with 80 ns typical rise/fall times under 1 nF load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| High-Side Offset Voltage | Up to +600 V - enables direct drive of high-side switches in buck, half-bridge, and SMPS topologies without external level shifters. |
| Gate Drive Supply Range | 10 V to 20 V - supports standard bootstrap capacitor designs with 15 V nominal bias for robust MOSFET turn-on. |
| Output Peak Current | ±500 mA - sufficient to rapidly charge/discharge gate capacitance of power devices up to 100 nC Qg. |
| Propagation Delay | 140 ns (typ) - ensures precise timing alignment in high-frequency switching applications up to 60 kHz. |
| UVLO Thresholds | VBS: 6.6 V (falling), 7.2 V (rising); VCC: 6.6 V / 7.2 V - prevents erratic output during bootstrap capacitor discharge or supply brownout. |
| Logic Input Type | Schmitt-trigger with internal pull-down - eliminates noise-induced switching in automotive EMI environments. |
| RESET- Compatibility | 3.3 V and 5 V logic - allows direct interface with microcontrollers and FPGA I/O without level translation. |
Pinout & Package
Package: 8-Lead SOIC (Small Outline Integrated Circuit), RoHS-compliant, MSL3, rated for automotive temperature range (−40 °C to +125 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Low-side logic supply input | Powers internal logic and level shifter; requires local 10–20 V decoupling near pin. |
| COM | Reference ground for logic and low-side circuitry | Common return path for input signals and VCC; must be tied to system ground, not floating node. |
| IN | Digital input controlling HO state | CMOS Schmitt-triggered; active-high; internal pull-down ensures default-off state at power-up. |
| HO | High-side gate drive output | Drives gate of N-channel MOSFET/IGBT referenced to VS; capable of sourcing/sinking 500 mA peak. |
| VB | Floating high-side supply input | Connects to bootstrap capacitor positive terminal; supplies gate driver stage referenced to VS. |
| VS | Floating source reference node | Return path for high-side output; tracks switching node voltage up to +600 V relative to COM. |
| RESET- | Active-low asynchronous reset | Forces HO low regardless of IN state; compatible with 3.3 V/5 V logic; internal 120 kΩ pull-up to VCC. |
Key Features
| Feature | Design Value |
|---|---|
| Floating channel with dV/dt immunity | Tolerates −50 to +50 V/ns transients on VS node - eliminates false turn-on in noisy inverter or injector drive circuits. |
| Integrated dual UVLO protection | Independent lockout for VCC and VBS supplies - prevents partial drive and shoot-through during bootstrap recharge cycles. |
| In-phase output logic | HO follows IN state directly - simplifies control firmware and eliminates need for external inversion logic. |
| Automotive qualification | AEC-Q100 Grade 1 (−40 °C to +125 °C), MSL3, HBM Class H1C - validated for under-hood engine control module deployment. |
| Reset- input with logic-level compatibility | Direct interface to MCU GPIO pins at 3.3 V or 5 V - enables safe shutdown during fault conditions without external buffers. |
Applications
| Automotive Fuel Injection | On-Board Charger (OBC) Half-Bridge |
|---|---|
Use Scenario: Precise timing control of solenoid-driven gasoline injectors in port fuel injection systems. IC Role / Device Role / Timing Role: High-side driver enabling fast, reliable gate control of N-channel power MOSFETs switching at 1–10 kHz. Use Value: 140 ns propagation delay and dV/dt immunity ensure accurate pulse-width modulation even during cylinder pressure transients. | Use Scenario: Driving high-side switches in bi-directional AC/DC converter stages of electric vehicle on-board chargers. IC Role / Device Role / Timing Role: Floating high-side gate driver supporting 600 V bus operation and synchronous rectification control. Use Value: Dual UVLO and latch-immune HVIC construction prevent shoot-through during rapid bus voltage transitions and thermal stress. |
| Automotive DC-DC Converters | Industrial Motor Control Inverters |
Use Scenario: Isolated step-down conversion in 12 V/48 V dual-battery architectures for ADAS and infotainment systems. IC Role / Device Role / Timing Role: High-side driver in synchronous buck regulators operating up to 60 kHz switching frequency. Use Value: 10–20 V gate drive range and ±500 mA output sustain efficient MOSFET switching across wide input voltage and load variations. | Use Scenario: Gate driving in three-phase inverters for HVAC compressors and traction auxiliary systems. IC Role / Device Role / Timing Role: Robust high-side driver for IGBTs/MOSFETs in industrial-grade motor drives requiring long-term reliability. Use Value: AEC-Q100 qualification and −40 °C to +125 °C operation guarantee stable performance across extended thermal cycling and vibration profiles. |
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 |
|---|---|---|---|
| IRS2123PbF | Industrial-grade (non-automotive), same pinout and electrical specs but lacks AEC-Q100 qualification and RESET- input. | Not suitable for safety-critical automotive functions; acceptable for cost-sensitive industrial SMPS. | Select only if automotive qualification and reset functionality are not required. |
| UCC27531DR | Single-channel low-side driver with 5 A peak output; no floating channel or high-side capability. | Cannot replace AUIRS2123STR in high-side configurations; requires external level-shifting for high-side use. | Use only in low-side or bootstrap-assisted high-side designs where isolation and 600 V tolerance are not needed. |
Compared with IRS2123PbF and UCC27531DR, the AUIRS2123STR uniquely combines automotive qualification, integrated RESET-, and true 600 V floating high-side operation - making it irreplaceable in AEC-Q100-compliant injector and inverter modules.
Availability
AUIRS2123STR is available at Aetrix Electronics and suitable for automotive fuel injection systems, on-board chargers, and industrial DC-DC converters requiring stable component supply across extended product lifecycles.
Supply support for AUIRS2123STR 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, with global R&D and manufacturing infrastructure.
The AUIRS2123STR belongs to Infineon's automotive-qualified high-voltage IC family, engineered specifically for robust gate driving in harsh automotive environments including engine control, battery management, and traction inverters.
FAQ
What is the maximum allowable dV/dt on the VS pin?
The AUIRS2123STR is specified to tolerate −50 V/ns to +50 V/ns dV/dt on the VS pin without false triggering. This rating is verified per AEC-Q100 test conditions and ensures reliable operation during fast-switching events in inverter and injector circuits where voltage transients exceed 100 V/µs.
Can AUIRS2123STR drive IGBTs as well as MOSFETs?
Yes - the AUIRS2123STR is explicitly characterized for driving both N-channel MOSFETs and IGBTs. Its ±500 mA peak output current and 140 ns propagation delay meet gate drive requirements for IGBTs with gate charge up to ~100 nC, as confirmed in Infineon Application Note AN-1098.
Is external bootstrap diode required when using AUIRS2123STR?
Yes - an external fast-recovery bootstrap diode (e.g., 1N4148WS or equivalent) is required between VCC and VB to charge the bootstrap capacitor during low-side conduction. The IC does not integrate this diode; omission causes VBS undervoltage and output disable.
Does RESET- require a pull-up resistor externally?
No - the AUIRS2123STR includes an internal 120 kΩ pull-up resistor to VCC on the RESET- pin. External pull-up is unnecessary unless specific timing or noise immunity enhancements are required per system-level EMC testing.
AUIRS2123STR 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
AUIRS2123STR FAQ
1.How can I place an order for AUIRS2123STR through Aetrix?
Please submit a Request for Quotation (RFQ) for AUIRS2123STR 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 AUIRS2123STR reliable?
The price and inventory of AUIRS2123STR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AUIRS2123STR is usually 5 days.
3.What payment methods are accepted for AUIRS2123STR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AUIRS2123STR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AUIRS2123STR?
AUIRS2123STR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AUIRS2123STR 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 AUIRS2123STR?
For technical support, including AUIRS2123STR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AUIRS2123STR requirements.
6.How does Aetrix verify that AUIRS2123STR is sourced from the original manufacturer or authorized distributors?
All AUIRS2123STR 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 AUIRS2123STR meets industry standards.
7.What is the process for return or replacement of AUIRS2123STR?
All AUIRS2123STR units undergo pre-shipment inspection (PSI). If there is an issue with AUIRS2123STR, 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 AUIRS2123STR part is unused and in its original packaging.
Return procedure for AUIRS2123STR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AUIRS2123STR Tags
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