Infineon Technologies
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AUIRS21814STR
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AUIRS21814STR

Product Overview

Category: Integrated Circuit (IC)

Use: Automotive Power MOSFET Driver

Characteristics: - High voltage level shifting capability - Low quiescent current - Wide operating voltage range - Short-circuit protection - Over-temperature shutdown - ESD protection

Package: SOIC-8

Essence: AUIRS21814STR is a high voltage, automotive power MOSFET driver IC designed for use in various automotive applications.

Packaging/Quantity: The AUIRS21814STR is typically sold in reels of 2500 units.

Specifications

  • Operating Voltage Range: 5V to 20V
  • Output Current: 2A
  • Rise and Fall Time: 15ns
  • Propagation Delay: 100ns
  • Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The AUIRS21814STR has the following pin configuration:

  1. VCC: Power supply input
  2. IN: Input control signal
  3. LO: Low-side gate driver output
  4. COM: Ground reference
  5. HO: High-side gate driver output
  6. SD: Shutdown input
  7. VB: Bootstrap supply voltage
  8. VS: High-side floating supply return

Functional Features

  • High voltage level shifting: Allows the control of high-side and low-side power MOSFETs.
  • Short-circuit protection: Safeguards against short circuits by shutting down the outputs.
  • Over-temperature shutdown: Protects the device from excessive heat.
  • ESD protection: Guards against electrostatic discharge events.

Advantages and Disadvantages

Advantages: - High voltage level shifting capability enables efficient control of power MOSFETs. - Low quiescent current reduces power consumption. - Wide operating voltage range provides flexibility in various automotive applications. - Short-circuit protection and over-temperature shutdown enhance system reliability. - ESD protection ensures robustness against electrostatic discharge events.

Disadvantages: - Limited output current of 2A may not be suitable for high-power applications.

Working Principles

The AUIRS21814STR operates by receiving an input control signal (IN) and generating corresponding gate drive signals for the high-side (HO) and low-side (LO) power MOSFETs. The device utilizes a bootstrap supply voltage (VB) to enable high voltage level shifting, allowing efficient control of the power MOSFETs. It also incorporates short-circuit protection, over-temperature shutdown, and ESD protection features to ensure safe and reliable operation in automotive environments.

Detailed Application Field Plans

The AUIRS21814STR is commonly used in automotive applications such as:

  1. Electric vehicle powertrain systems
  2. Hybrid electric vehicle inverters
  3. Automotive lighting systems
  4. Motor control units
  5. Battery management systems

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to AUIRS21814STR are:

  1. Infineon IRS21814S
  2. Texas Instruments UCC27211
  3. ON Semiconductor NCV8402
  4. STMicroelectronics L6387ED013TR

These alternative models offer similar functionality and characteristics, providing options for different design requirements.

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10 domande e risposte comuni relative all'applicazione di AUIRS21814STR nelle soluzioni tecniche

Sure! Here are 10 common questions and answers related to the application of AUIRS21814STR in technical solutions:

  1. Q: What is AUIRS21814STR? A: AUIRS21814STR is a high-voltage, high-speed power MOSFET and IGBT driver specifically designed for automotive applications.

  2. Q: What are the key features of AUIRS21814STR? A: Some key features include high voltage capability (up to 600V), high peak output current (up to 4A), and integrated protection features such as desaturation detection and fault reporting.

  3. Q: What types of applications can AUIRS21814STR be used in? A: AUIRS21814STR is commonly used in automotive systems such as electric vehicle powertrains, hybrid electric vehicles, and motor control applications.

  4. Q: How does AUIRS21814STR help in automotive powertrain applications? A: AUIRS21814STR provides efficient and reliable switching of power MOSFETs and IGBTs, enabling precise control of motor speed and torque in electric and hybrid vehicles.

  5. Q: Can AUIRS21814STR handle high voltages? A: Yes, AUIRS21814STR is designed to handle high voltages up to 600V, making it suitable for various automotive powertrain applications.

  6. Q: Does AUIRS21814STR have any built-in protection features? A: Yes, AUIRS21814STR includes built-in protection features such as desaturation detection, which helps prevent damage to power devices during fault conditions.

  7. Q: What is desaturation detection? A: Desaturation detection is a feature that monitors the voltage across the power device to detect if it enters a desaturated state, indicating a fault condition such as a short circuit or overcurrent.

  8. Q: Can AUIRS21814STR be used in harsh automotive environments? A: Yes, AUIRS21814STR is designed to operate reliably in harsh automotive environments, with features like under-voltage lockout and thermal shutdown protection.

  9. Q: What is the maximum peak output current of AUIRS21814STR? A: AUIRS21814STR can provide a maximum peak output current of up to 4A, allowing it to drive high-power MOSFETs and IGBTs effectively.

  10. Q: Are there any application notes or reference designs available for AUIRS21814STR? A: Yes, Infineon, the manufacturer of AUIRS21814STR, provides application notes and reference designs that can help engineers in implementing the driver in their technical solutions.

Please note that the answers provided here are general and may vary depending on specific requirements and use cases. It's always recommended to refer to the datasheet and documentation provided by the manufacturer for detailed information.