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IR21814STR
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IR21814STR

Product Overview

Category: Integrated Circuit (IC)

Use: The IR21814STR is a high-speed, high-voltage gate driver IC designed for use in power electronics applications. It provides the necessary drive and protection features required to control high-power MOSFETs and IGBTs.

Characteristics: - High-speed switching capability - Wide input voltage range - High output current capability - Built-in protection features - Compact and robust package design

Package: The IR21814STR is available in a small outline integrated circuit (SOIC) package. This package offers excellent thermal performance and ease of integration into various electronic systems.

Essence: The essence of the IR21814STR lies in its ability to efficiently drive and control high-power semiconductor devices, enabling reliable and precise switching operations in power electronics applications.

Packaging/Quantity: The IR21814STR is typically sold in reels or tubes, with each reel or tube containing a specific quantity of ICs. The exact packaging and quantity may vary depending on the supplier.

Specifications

  • Input Voltage Range: 3V to 20V
  • Output Voltage Range: -0.3V to VCC + 0.3V
  • Maximum Output Current: 2A
  • Operating Temperature Range: -40°C to 125°C
  • Supply Voltage Range: 10V to 20V
  • Propagation Delay Time: 120ns (typical)
  • Rise/Fall Time: 35ns (typical)

Detailed Pin Configuration

The IR21814STR features a dual independent high-side and low-side gate driver configuration. It has a total of eight pins, each serving a specific function:

  1. VCC: Power supply voltage for the IC.
  2. VB: Bootstrap supply voltage for the high-side gate driver.
  3. HO: High-side gate driver output.
  4. LO: Low-side gate driver output.
  5. COM: Common ground reference for the IC.
  6. SD: Shutdown input pin for disabling the gate driver outputs.
  7. VS: Supply voltage for the low-side gate driver.
  8. HB: Bootstrap supply voltage for the high-side gate driver.

Functional Features

  • High-speed switching: The IR21814STR is capable of driving power semiconductor devices at high frequencies, enabling efficient power conversion and control.
  • Integrated protection features: The IC incorporates various protection mechanisms such as under-voltage lockout (UVLO), over-current protection (OCP), and thermal shutdown to ensure safe and reliable operation.
  • Independent high-side and low-side drivers: The dual driver configuration allows for precise control of both the high-side and low-side switches, minimizing switching losses and improving overall system efficiency.

Advantages and Disadvantages

Advantages: - High-speed switching capability enables efficient power conversion. - Integrated protection features enhance system reliability. - Compact package design facilitates easy integration into electronic systems. - Wide input voltage range provides flexibility in different applications.

Disadvantages: - Limited maximum output current may restrict usage in certain high-power applications. - Propagation delay time and rise/fall time may affect the overall switching performance in specific scenarios.

Working Principles

The IR21814STR operates by receiving input signals from a microcontroller or other control circuitry. It amplifies and shapes these signals to generate the necessary gate drive voltages for the high-side and low-side switches. By controlling the timing and duration of these gate drive signals, the IC regulates the conduction and blocking states of the power semiconductor devices, allowing for efficient power conversion and control.

Detailed Application Field Plans

The IR21814STR finds extensive application in various power electronics fields, including but not limited to: - Motor drives - Switch-mode power supplies - Uninterruptible power supplies (UPS) - Solar inverters - Electric vehicle charging systems

Detailed and Complete Alternative Models

  1. IR21814: Similar to the IR21814STR, this model offers the same functionality but comes in a different package.
  2. IR2110: A popular alternative with similar features, suitable for driving high-power MOSFETs and IGBTs.
  3. IRS21844: This model provides additional protection features and is designed for high-voltage applications.

These alternative models can be considered based on specific application requirements and availability.

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Lista 10 Vanliga frågor och svar relaterade till tillämpningen av IR21814STR i tekniska lösningar

Sure! Here are 10 common questions and answers related to the application of IR21814STR in technical solutions:

  1. Q: What is IR21814STR? A: IR21814STR is a high-speed, high-voltage MOSFET and IGBT driver IC.

  2. Q: What is the maximum voltage rating of IR21814STR? A: The maximum voltage rating of IR21814STR is typically around 600V.

  3. Q: What is the purpose of using IR21814STR in technical solutions? A: IR21814STR is used to drive and control the switching of power MOSFETs and IGBTs in various applications such as motor drives, inverters, and power supplies.

  4. Q: What is the maximum operating frequency supported by IR21814STR? A: IR21814STR can support operating frequencies up to several hundred kilohertz.

  5. Q: Does IR21814STR have built-in protection features? A: Yes, IR21814STR includes various protection features like under-voltage lockout (UVLO), over-current protection (OCP), and thermal shutdown.

  6. Q: Can IR21814STR be used with both MOSFETs and IGBTs? A: Yes, IR21814STR is designed to work with both MOSFETs and IGBTs.

  7. Q: What is the typical output current capability of IR21814STR? A: The typical output current capability of IR21814STR is around 2A.

  8. Q: Is IR21814STR compatible with logic-level inputs? A: Yes, IR21814STR has TTL and CMOS compatible inputs, making it suitable for use with logic-level signals.

  9. Q: Can IR21814STR operate in a wide temperature range? A: Yes, IR21814STR is designed to operate reliably in a wide temperature range, typically from -40°C to 125°C.

  10. Q: Are there any application notes or reference designs available for IR21814STR? A: Yes, the manufacturer of IR21814STR provides application notes and reference designs that can help users understand and implement the IC effectively in their technical solutions.

Please note that the answers provided here are general and may vary depending on specific datasheet specifications and application requirements.