IR21834PBF

Product Overview

Category: Integrated Circuit (IC)

Use: The IR21834PBF is a high-performance, half-bridge gate driver IC designed for use in motor control and power conversion applications. It provides the necessary drive signals for controlling the high-side and low-side MOSFETs in a half-bridge configuration.

Characteristics: - High voltage capability - Fast switching speed - Low quiescent current - Protection features (overcurrent, overtemperature, undervoltage lockout) - High noise immunity

Package: The IR21834PBF is available in a compact and industry-standard 14-pin PDIP (Plastic Dual In-line Package) or SOIC (Small Outline Integrated Circuit) package.

Essence: The essence of the IR21834PBF lies in its ability to efficiently drive high-power MOSFETs in motor control and power conversion applications, enabling precise and reliable control of electrical systems.

Packaging/Quantity: The IR21834PBF is typically sold in reels or tubes, with each reel or 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: 200mA (source/sink)
• Operating Temperature Range: -40°C to +125°C
• Propagation Delay Time: 120ns (typical)
• Rise/Fall Time: 35ns (typical)
• Maximum Duty Cycle: 50%

Pin Configuration

The IR21834PBF features a 14-pin configuration as follows:

1. VCC - Supply Voltage
2. HO - High-Side Gate Driver Output
3. LO - Low-Side Gate Driver Output
4. VB - Bootstrap Supply Voltage
5. VS - High-Side Floating Supply Voltage
6. COM - Common Ground
7. HO - High-Side Gate Driver Output
8. LO - Low-Side Gate Driver Output
9. VB - Bootstrap Supply Voltage
10. VS - High-Side Floating Supply Voltage
11. COM - Common Ground
12. VCC - Supply Voltage
13. SD - Shutdown Input
14. NC - No Connection

Functional Features

• High and low-side gate drivers for half-bridge configuration
• Integrated bootstrap diode for high-side driver
• Under-voltage lockout protection
• Overcurrent protection
• Overtemperature protection
• Fault reporting output
• Schmitt-triggered inputs for noise immunity

Advantages and Disadvantages

Advantages: - High voltage capability allows for use in a wide range of applications - Fast switching speed enables efficient motor control and power conversion - Low quiescent current minimizes power consumption - Protection features enhance system reliability - High noise immunity ensures stable operation in noisy environments

Disadvantages: - Limited maximum duty cycle may restrict certain applications - Requires external components (MOSFETs, bootstrap capacitor) for complete functionality

Working Principles

The IR21834PBF operates by receiving control signals from a microcontroller or other control circuitry and generating the necessary drive signals to control the high-side and low-side MOSFETs in a half-bridge configuration. The high-side driver utilizes a bootstrap capacitor to provide the required gate voltage, while the low-side driver directly controls the low-side MOSFET.

Detailed Application Field Plans

The IR21834PBF is widely used in various applications, including: 1. Motor control systems (e.g., electric vehicles, industrial machinery) 2. Power inverters and converters 3. Switch-mode power supplies 4. Uninterruptible power supplies (UPS) 5. Solar inverters

Detailed and Complete Alternative Models

1. IR21834S: Similar to the IR21834PBF, but in a surface-mount SOIC package.
2. IR21834SPBF: Surface-mount version with improved noise immunity and protection features.
3. IR21834MPBF: Multi-channel version with two half-bridge drivers in a single IC.

These alternative models offer similar functionality and can be considered as substitutes for the IR21834PBF depending on specific requirements and application constraints.

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