AUIRS4427S

Product Overview

Category

AUIRS4427S belongs to the category of integrated circuits (ICs) specifically designed for automotive applications.

Use

This IC is commonly used in automotive systems for driving high-side and low-side switches, such as power MOSFETs, in a half-bridge configuration.

Characteristics

• AUIRS4427S is a high-voltage, high-speed power MOSFET and IGBT driver.
• It operates at a wide supply voltage range of 6V to 20V.
• The IC is capable of delivering high peak output currents, making it suitable for demanding automotive applications.
• It offers protection features like undervoltage lockout (UVLO), overcurrent shutdown, and thermal shutdown.

Package

The AUIRS4427S is available in a compact surface-mount package, typically a SOIC-8 (Small Outline Integrated Circuit) package.

Essence

The essence of AUIRS4427S lies in its ability to efficiently drive power MOSFETs and IGBTs in automotive applications, ensuring reliable and safe operation.

Packaging/Quantity

The IC is usually supplied in reels or tubes, with a typical quantity of 2500 units per reel.

Specifications

• Supply Voltage Range: 6V to 20V
• Peak Output Current: Up to 2.5A
• Operating Temperature Range: -40°C to +125°C
• UVLO Threshold: 4.3V (typical)
• Overcurrent Shutdown Threshold: Adjustable
• Thermal Shutdown Temperature: 150°C (typical)

Detailed Pin Configuration

The AUIRS4427S IC has a standard SOIC-8 pin configuration:

1. VCC: Power supply input
2. IN1: Input control signal for high-side switch
3. LO1: Low-side switch output
4. COM1: Common terminal for high-side and low-side switches
5. HO1: High-side switch output
6. IN2: Input control signal for low-side switch
7. LO2: Low-side switch output
8. VS: Power supply ground

Functional Features

• AUIRS4427S provides independent inputs for controlling the high-side and low-side switches, allowing precise control of the half-bridge configuration.
• It offers a wide operating voltage range, enabling compatibility with various automotive power systems.
• The IC incorporates protection features like UVLO, overcurrent shutdown, and thermal shutdown to ensure safe operation in demanding conditions.

Advantages and Disadvantages

Advantages

• High-voltage capability allows driving of power MOSFETs and IGBTs in automotive applications.
• Wide operating voltage range enhances compatibility with different automotive power systems.
• Protection features provide safety and reliability.

Disadvantages

• Limited peak output current compared to some other high-power driver ICs.
• Availability may be limited due to specific application requirements.

Working Principles

AUIRS4427S operates by receiving input control signals (IN1 and IN2) to drive the high-side and low-side switches, respectively. These switches are connected to power MOSFETs or IGBTs, forming a half-bridge configuration. The IC ensures proper timing and voltage levels for efficient switching of these devices, enabling the desired functionality in automotive systems.

Detailed Application Field Plans

The AUIRS4427S IC finds extensive use in various automotive applications, including:

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

In these applications, the IC enables efficient and reliable control of power MOSFETs and IGBTs, contributing to the overall performance and safety of the automotive systems.

Detailed and Complete Alternative Models

1. AUIRS4427STR: Similar to AUIRS4427S, but available in a tape and reel packaging format.
2. AUIRS4427SPBF: Similar to AUIRS4427S, but offered in a lead-free package for compliance with environmental regulations.
3. AUIRS4427SDTR: Similar to AUIRS4427S, but supplied in a tube packaging format.

These alternative models provide similar functionality and characteristics as AUIRS4427S, offering flexibility in choosing the most suitable option for specific application requirements.

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