IRS21851STRPBF

Product Overview

Category: Integrated Circuit (IC)

Use: IRS21851STRPBF is a high-speed, high-voltage gate driver IC designed for driving MOSFETs and IGBTs in various power applications.

Characteristics: - High voltage capability - Fast switching speed - Low propagation delay - High noise immunity - Wide operating temperature range

Package: IRS21851STRPBF is available in a small outline package (SOP) with 8 pins.

Essence: The essence of IRS21851STRPBF lies in its ability to provide efficient and reliable gate drive signals to power transistors, enabling them to switch on and off rapidly.

Packaging/Quantity: IRS21851STRPBF is typically sold in reels containing 2500 units per reel.

Specifications

• Supply Voltage Range: 10V to 20V
• Output Current: ±2A
• Input Logic Level: CMOS/TTL compatible
• Operating Temperature Range: -40°C to +125°C
• Maximum Propagation Delay: 200ns

Detailed Pin Configuration

1. VCC: Power supply input
2. HO: High-side gate driver output
3. LO: Low-side gate driver output
4. COM: Common ground
5. VB: Bootstrap supply voltage input
6. VS: High-side floating supply return
7. HS: High-side floating supply input
8. LS: Low-side floating supply input

Functional Features

• High-speed switching: IRS21851STRPBF enables fast switching of power transistors, reducing power losses and improving overall system efficiency.
• Overcurrent protection: The IC incorporates overcurrent protection circuitry to safeguard the power devices from excessive current flow.
• Undervoltage lockout: It includes undervoltage lockout functionality to prevent improper operation when the supply voltage drops below a specified threshold.
• Shoot-through protection: IRS21851STRPBF features built-in shoot-through protection, preventing simultaneous conduction of high-side and low-side power devices.

Advantages and Disadvantages

Advantages: - High voltage capability allows driving of MOSFETs and IGBTs in various power applications. - Fast switching speed reduces power losses and improves system efficiency. - Integrated protection features enhance reliability and protect power devices from damage.

Disadvantages: - Limited output current may restrict its use in high-power applications. - Requires external bootstrap capacitor for proper operation.

Working Principles

IRS21851STRPBF operates by receiving input signals from a microcontroller or control circuitry. It generates gate drive signals with appropriate voltage levels and timing to switch the power transistors on and off. The IC incorporates internal circuitry to provide protection against overcurrent, undervoltage, and shoot-through conditions.

Detailed Application Field Plans

IRS21851STRPBF finds applications in various fields, including: 1. Motor control systems 2. Power inverters 3. Switch-mode power supplies 4. Industrial automation 5. Renewable energy systems

Detailed and Complete Alternative Models

1. IRS21850STRPBF: Similar to IRS21851STRPBF but without shoot-through protection.
2. IRS21852STRPBF: Enhanced version with higher output current capability.
3. IRS21853STRPBF: Dual-channel version for driving multiple power devices simultaneously.

These alternative models offer different features and specifications to cater to specific application requirements.

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