IRS21834PBF

Product Overview

Category: Integrated Circuit (IC)

Use: The IRS21834PBF is a high-performance, high-voltage, half-bridge gate driver IC. It is specifically designed for driving MOSFETs and IGBTs in applications such as motor drives, power supplies, and inverters.

Characteristics: - High voltage capability - Fast switching speed - Low power consumption - Protection features against overcurrent and overtemperature - High noise immunity

Package: The IRS21834PBF is available in a compact and industry-standard 14-pin PDIP (Plastic Dual In-line Package) or SOIC (Small Outline Integrated Circuit) package.

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

Packaging/Quantity: The IRS21834PBF is typically sold in reels or tubes, with each reel containing 250 units or each tube containing 50 units.

Specifications

• Supply Voltage Range: 10V to 20V
• Output Current: ±2A
• Operating Temperature Range: -40°C to +125°C
• Propagation Delay Time: 120ns (max)
• Rise/Fall Time: 35ns (typ)
• Input Logic Compatibility: CMOS/TTL

Detailed Pin Configuration

The IRS21834PBF features a total of 14 pins, each serving a specific function:

1. VCC: Power 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. HS: High-side floating supply input
7. LS: Low-side floating supply input
8. COM: Common connection for floating supplies
9. SD: Shutdown input (active low)
10. IN: Logic input
11. NC: No connection
12. VSS: Ground reference
13. HO2: High-side gate driver output (second channel)
14. LO2: Low-side gate driver output (second channel)

Functional Features

• High voltage level shifting capability
• Integrated bootstrap diode for high-side gate drive
• Undervoltage lockout protection
• Overcurrent protection with adjustable threshold
• Shoot-through prevention logic
• Fault reporting output
• UVLO and thermal shutdown protection

Advantages and Disadvantages

Advantages: - High-performance gate driver suitable for demanding applications - Robust protection features enhance system reliability - Compact package size allows for space-efficient designs - Fast switching speed enables efficient power conversion - Wide operating temperature range for versatile usage

Disadvantages: - Limited output current compared to some specialized gate drivers - Requires external components for bootstrap supply

Working Principles

The IRS21834PBF operates by receiving logic-level signals at the IN pin, which control the switching of the high-side and low-side gate driver outputs. These outputs provide the necessary voltage and current to drive MOSFETs or IGBTs in a half-bridge configuration. The integrated bootstrap diode simplifies the high-side gate drive circuitry.

The IC incorporates various protection mechanisms, such as undervoltage lockout (UVLO), overcurrent detection, and thermal shutdown. These features ensure safe operation and protect the connected power devices from damage.

Detailed Application Field Plans

The IRS21834PBF finds extensive use in various applications, including: - Motor drives - Power supplies - Inverters - Uninterruptible Power Supplies (UPS) - Solar inverters - Electric vehicle charging systems - Industrial automation

Detailed and Complete Alternative Models

• IRS21834SPBF: Surface-mount version of IRS21834PBF
• IRS21834S: Single-channel version of IRS21834PBF
• IRS21834STRPBF: Tape and reel packaging variant of IRS21834PBF

These alternative models offer similar functionality and performance, providing flexibility in design and application requirements.

In conclusion, the IRS21834PBF is a high-performance gate driver IC designed for driving MOSFETs and IGBTs in various power electronics applications. Its robust features, compact package, and wide operating temperature range make it an ideal choice for demanding systems requiring efficient and reliable control of high-power devices.