IR2181PBF

Product Overview

Category: Integrated Circuit (IC)

Use: The IR2181PBF is a high-performance half-bridge gate driver IC designed for use in various power electronics applications.

Characteristics: - High voltage level shifting capability - Low propagation delay and shoot-through current - Protection features against overcurrent and undervoltage - Suitable for driving MOSFETs, IGBTs, and other power devices

Package: The IR2181PBF is available in a compact and industry-standard 8-pin DIP (Dual Inline Package) or SOIC (Small Outline Integrated Circuit) package.

Essence: This IC serves as a crucial component in power electronic systems, enabling efficient and reliable switching of power devices.

Packaging/Quantity: The IR2181PBF is typically sold in reels or tubes containing a quantity of 50 units per package.

Specifications

• Supply Voltage Range: 10V to 20V
• Output Current: ±2A
• Operating Temperature Range: -40°C to +125°C
• Maximum Propagation Delay: 200ns
• Maximum Rise/Fall Time: 50ns

Pin Configuration

The IR2181PBF features the following pin configuration:

1. VCC: Power supply input
2. VB: Bootstrap supply input for high-side gate driver
3. HO: High-side gate driver output
4. LO: Low-side gate driver output
5. COM: Common ground reference
6. LIN: Logic input for low-side gate driver
7. HIN: Logic input for high-side gate driver
8. VS: Supply voltage for bootstrap capacitor

Functional Features

• High voltage level shifting: Enables driving of high-side power devices with ease.
• Low propagation delay and shoot-through current: Ensures minimal time delay and prevents simultaneous conduction of high-side and low-side power devices.
• Overcurrent and undervoltage protection: Safeguards the power devices from potential damage.
• Versatile compatibility: Compatible with various power devices such as MOSFETs, IGBTs, etc.

Advantages

• Efficient switching: The IR2181PBF allows for fast and precise switching of power devices, minimizing power losses.
• Compact package: The IC's small form factor makes it suitable for space-constrained applications.
• Robust protection: The built-in protection features enhance the reliability and longevity of the power electronic system.

Disadvantages

• Limited output current: The ±2A output current may not be sufficient for certain high-power applications.
• Temperature limitations: The operating temperature range of -40°C to +125°C may restrict its use in extreme environments.

Working Principles

The IR2181PBF operates by receiving logic inputs (LIN and HIN) to control the gate driver outputs (LO and HO). These outputs drive the low-side and high-side power devices, respectively. The bootstrap supply (VB) provides the necessary voltage for the high-side gate driver. By precisely controlling the timing and voltage levels, the IC ensures efficient switching of power devices.

Application Field Plans

The IR2181PBF finds extensive application in various power electronics systems, including: - Motor drives - Switch-mode power supplies - Inverters - Uninterruptible power supplies (UPS) - Solar inverters - Electric vehicle charging systems

Alternative Models

For those seeking alternative options, the following ICs can be considered: - IR2110 - IRS21844 - TC4427 - HIP4081A

These models offer similar functionalities and can serve as suitable replacements for the IR2181PBF in different applications.

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