AUIRS21811S

Product Overview

Category

AUIRS21811S belongs to the category of integrated circuits (ICs) specifically designed for automotive applications.

Use

This product is primarily used in automotive electronic systems, particularly in powertrain and motor control applications.

Characteristics

• AUIRS21811S is a high-voltage, high-speed power MOSFET and IGBT driver.
• It is capable of driving both N-channel power MOSFETs and IGBTs with high efficiency.
• The device operates at a wide input voltage range, making it suitable for various automotive applications.
• AUIRS21811S offers protection features such as under-voltage lockout (UVLO), over-current protection (OCP), and thermal shutdown.

Package

The AUIRS21811S is available in a compact surface-mount package, allowing for easy integration into automotive electronic systems.

Essence

The essence of AUIRS21811S lies in its ability to provide efficient and reliable driving of power MOSFETs and IGBTs in automotive applications.

Packaging/Quantity

This product is typically packaged in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

• Input Voltage Range: 5V - 20V
• Output Current: 2.5A
• Operating Temperature Range: -40°C to +125°C
• Supply Voltage Range: 10V - 20V
• Maximum Propagation Delay: 150ns

Detailed Pin Configuration

The AUIRS21811S has the following pin configuration:

1. VCC - Power supply voltage input
2. IN - Logic input for controlling the output stage
3. LO - Low-side gate driver output
4. HO - High-side gate driver output
5. COM - Common connection for low-side and high-side drivers
6. VB - Bootstrap supply voltage input for high-side driver
7. VS - High-side floating supply return

Functional Features

• High-voltage level shifting capability
• Integrated bootstrap diode for high-side driver
• Under-voltage lockout protection
• Over-current protection
• Thermal shutdown protection
• Fast switching speed for efficient power conversion

Advantages and Disadvantages

Advantages

• Wide input voltage range allows for versatile application in automotive systems.
• High-speed switching capability enables efficient power conversion.
• Comprehensive protection features enhance system reliability.
• Compact package facilitates easy integration into electronic systems.

Disadvantages

• Limited output current may restrict usage in high-power applications.
• Requires external components for proper operation.

Working Principles

AUIRS21811S operates by receiving logic input signals through the IN pin, which controls the output stage. The device utilizes high-voltage level shifting to drive both N-channel power MOSFETs and IGBTs efficiently. The integrated bootstrap diode provides the necessary voltage supply for the high-side driver. Protection features such as under-voltage lockout, over-current protection, and thermal shutdown ensure safe operation of the device.

Detailed Application Field Plans

The AUIRS21811S is widely used in various automotive applications, including:

1. Powertrain control modules
2. Motor control units
3. Battery management systems
4. Electric vehicle charging systems
5. LED lighting systems in automobiles

Detailed and Complete Alternative Models

1. AUIRS21814S: Similar to AUIRS21811S but with higher output current capability (5A).
2. AUIRS21817S: Enhanced version with additional protection features and wider operating temperature range (-40°C to +150°C).
3. AUIRS21820S: Higher voltage rating variant suitable for applications requiring higher voltage levels.

These alternative models offer similar functionality to AUIRS21811S but with varying specifications to cater to different application requirements.

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