IRS21814PBF

Product Overview

Category: Integrated Circuit (IC)

Use: IRS21814PBF is a high-speed, high-voltage gate driver IC designed for use in power electronics applications. It is specifically used to drive MOSFETs and IGBTs in half-bridge and full-bridge configurations.

Characteristics: - High-speed switching capability - High voltage rating - Low power consumption - Compact package size - Robust design for reliable operation

Package: IRS21814PBF is available in a compact and industry-standard 8-pin DIP (Dual Inline Package) or SOIC (Small Outline Integrated Circuit) package.

Essence: The essence of IRS21814PBF lies in its ability to provide efficient and reliable gate driving for power electronic devices, ensuring optimal performance and protection against voltage spikes and transients.

Packaging/Quantity: IRS21814PBF is typically sold in reels or tubes containing a quantity of 250 units per package.

Specifications

• Supply Voltage Range: 10V to 20V
• Output Current: 2A
• Propagation Delay: 150ns
• Rise/Fall Time: 50ns
• Operating Temperature Range: -40°C to +125°C

Detailed 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
6. SD: Shutdown input
7. VS: Supply voltage for logic inputs
8. IN: Input control signal

Functional Features

• High-speed switching: IRS21814PBF enables fast switching of MOSFETs and IGBTs, reducing power losses and improving overall system efficiency.
• Integrated bootstrap diode: The built-in bootstrap diode simplifies the gate drive circuitry, reducing component count and board space requirements.
• Under-voltage lockout (UVLO) protection: This feature ensures that the gate driver operates only when the supply voltage is within the specified range, preventing damage to the device.
• Over-current protection: IRS21814PBF incorporates a current sense amplifier for over-current protection, safeguarding the power electronic devices from excessive currents.

Advantages and Disadvantages

Advantages: - High-speed switching capability improves system efficiency - Integrated bootstrap diode reduces component count - UVLO and over-current protection enhance device reliability - Compact package size allows for easy integration into various applications

Disadvantages: - Limited output current of 2A may not be suitable for high-power applications - Propagation delay and rise/fall times may impact switching speed in certain scenarios

Working Principles

IRS21814PBF operates by receiving an input control signal (IN) and generating complementary output signals (HO and LO) to drive the high-side and low-side gates of MOSFETs or IGBTs. The bootstrap supply (VB) provides the necessary voltage for driving the high-side gate, while the common ground (COM) ensures proper reference potential. The shutdown input (SD) allows for device enable/disable functionality.

Detailed Application Field Plans

IRS21814PBF finds extensive use in various power electronics applications, including: 1. Motor drives 2. Switch-mode power supplies 3. Uninterruptible power supplies (UPS) 4. Solar inverters 5. Electric vehicle charging systems 6. Industrial automation equipment

Detailed and Complete Alternative Models

Some alternative models to IRS21814PBF include: 1. IRS21844S: Similar features with additional integrated dead-time control 2. IRS21867S: Higher output current capability and integrated protection features 3. IRS21864S: Dual-channel gate driver with independent inputs and outputs

These alternative models offer different specifications and features, allowing designers to choose the most suitable option for their specific application requirements.

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