IRS21091SPBF

Product Overview

Category: Integrated Circuit (IC)

Use: The IRS21091SPBF is a high-performance half-bridge 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 in various systems.

Characteristics: - High voltage level shifting capability - Low propagation delay and rise/fall times - Integrated bootstrap diode - Under-voltage lockout protection - Over-current protection - Fault reporting output - Wide operating temperature range

Package: The IRS21091SPBF is available in a compact surface-mount package, allowing for easy integration into electronic circuits.

Essence: This IC serves as a crucial component in power electronics systems, enabling efficient and reliable control of high-power MOSFETs and IGBTs.

Packaging/Quantity: The IRS21091SPBF is typically sold in reels or tubes, with each reel/tube containing a specific quantity of ICs. The exact packaging and quantity may vary depending on the supplier.

Specifications

• Supply Voltage Range: 10V to 20V
• Output Current: ±2A
• Operating Temperature Range: -40°C to +125°C
• Input Logic Compatibility: CMOS, TTL
• Maximum Propagation Delay: 150ns
• Maximum Rise/Fall Time: 50ns

Detailed Pin Configuration

The IRS21091SPBF has a total of 16 pins, which are assigned specific functions. The pin configuration is as follows:

1. VCC: Supply voltage input
2. HO: High-side gate driver output
3. LO: Low-side gate driver output
4. VB: Bootstrap supply voltage input
5. VS: High-side floating supply return
6. COM: Common connection for low-side and high-side drivers
7. SD: Shutdown input
8. VSS: Ground connection
9. NC: No connection
10. NC: No connection
11. NC: No connection
12. NC: No connection
13. NC: No connection
14. NC: No connection
15. NC: No connection
16. NC: No connection

Functional Features

• High voltage level shifting capability allows direct control of high-power MOSFETs and IGBTs.
• Integrated bootstrap diode simplifies the design by eliminating the need for an external diode.
• Under-voltage lockout protection ensures safe operation by preventing the IC from operating below a specified voltage threshold.
• Over-current protection safeguards the system by limiting the current flowing through the MOSFET or IGBT.
• Fault reporting output provides a signal indicating any detected faults, enabling timely troubleshooting.

Advantages and Disadvantages

Advantages: - High-performance gate driver with fast switching characteristics - Comprehensive protection features enhance system reliability - Compact package enables easy integration into electronic circuits - Wide operating temperature range allows for versatile applications

Disadvantages: - Limited output current may restrict usage in certain high-power applications - Requires external components for proper operation (e.g., bootstrap capacitor)

Working Principles

The IRS21091SPBF operates by receiving input signals from a microcontroller or other control circuitry. These input signals determine the desired state (ON/OFF) of the high-side and low-side gate driver outputs. The IC utilizes high voltage level shifting techniques to provide the necessary drive voltage for controlling the MOSFET or IGBT. The integrated bootstrap diode simplifies the design by generating the required voltage for the high-side gate driver. Various protection features, such as under-voltage lockout and over-current protection, ensure safe and reliable operation of the power electronics system.

Detailed Application Field Plans

The IRS21091SPBF is widely used in various power electronics applications, including:

1. Motor Drives: Controlling the speed and direction of electric motors.
2. Switching Power Supplies: Regulating the output voltage and current in power supply circuits.
3. Inverters: Converting DC power to AC power in renewable energy systems or motor drives.
4. Uninterruptible Power Supplies (UPS): Providing backup power during mains power failures.
5. Electric Vehicle (EV) Charging Stations: Managing the charging process of electric vehicles.

Detailed and Complete Alternative Models

1. IRS2101SPBF: Similar to IRS21091SPBF but without fault reporting output.
2. IRS21844SPBF: Dual half-bridge gate driver IC with additional features like dead-time control and shoot-through protection.
3. IR2110SPBF: High-voltage, high-speed power MOSFET and IGBT driver IC with independent high-side and low-side outputs.

These alternative models offer similar functionality and can be considered as substitutes for the IRS21091SPBF based on specific application requirements.

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