IRS2118PBF

Product Overview

• Category: Integrated Circuit (IC)
• Use: Motor Drive and Control
• Characteristics: High voltage, high-speed power MOSFET and IGBT driver
• Package: 16-Lead SOIC (Small Outline Integrated Circuit)
• Essence: Efficient and reliable motor drive and control solution
• Packaging/Quantity: Available in tubes of 50 units or reels of 2,500 units

Specifications

• Supply Voltage: 10V to 20V
• Output Current: ±0.5A
• Operating Temperature Range: -40°C to +125°C
• Propagation Delay: 120ns (typical)
• Input Logic Compatibility: CMOS, LSTTL
• Protection Features: Under-voltage lockout, over-current protection, thermal shutdown

Detailed Pin Configuration

1. VCC: Supply voltage for the IC
2. HO: High-side gate driver output
3. LO: Low-side gate driver output
4. VB: Bootstrap supply voltage for high-side driver
5. VS: High-side floating supply return
6. COM: Common connection for low-side driver and bootstrap capacitor
7. LIN: Logic input for low-side driver
8. HB: High-side floating supply voltage
9. SD: Shutdown input
10. GND: Ground reference
11. VREF: Reference voltage output
12. CT: External capacitor for dead-time control
13. RT: External resistor for dead-time control
14. NC: No connection
15. VSS: Negative supply voltage for the IC
16. HO: High-side gate driver output

Functional Features

• High voltage level shifting capability
• Integrated bootstrap diode
• Adaptive shoot-through protection
• Adjustable dead-time control
• UVLO (Under-Voltage Lockout) protection
• Over-current protection
• Thermal shutdown protection

Advantages and Disadvantages

Advantages: - High voltage capability enables driving of power MOSFETs and IGBTs - Integrated bootstrap diode simplifies circuit design - Adaptive shoot-through protection enhances system reliability - Adjustable dead-time control allows optimization for different applications - Comprehensive protection features ensure safe operation

Disadvantages: - Limited output current may not be suitable for high-power applications - Requires external components for proper operation - Relatively high propagation delay compared to some other driver ICs

Working Principles

The IRS2118PBF is a high-voltage, high-speed power MOSFET and IGBT driver IC. It provides the necessary level shifting and gate drive signals to control the switching of power devices in motor drive and control applications. The IC utilizes a bootstrap supply technique to generate the high-side gate drive voltage, eliminating the need for an additional isolated power supply.

By receiving logic inputs, the IRS2118PBF generates complementary gate drive signals with adjustable dead-time to prevent shoot-through current. It also incorporates various protection features such as under-voltage lockout, over-current protection, and thermal shutdown to safeguard the system from faults and failures.

Detailed Application Field Plans

The IRS2118PBF is widely used in various motor drive and control applications, including:

1. Industrial automation systems
2. Electric vehicles
3. Robotics
4. HVAC (Heating, Ventilation, and Air Conditioning) systems
5. Renewable energy systems (e.g., wind turbines)
6. Power tools
7. Appliances

Its high voltage capability, adaptive shoot-through protection, and comprehensive protection features make it suitable for demanding applications that require efficient and reliable motor control.

Detailed and Complete Alternative Models

1. IRS21844S: Similar functionality with additional integrated features
2. IR2104: Lower voltage capability but suitable for lower power applications
3. IRS2336DJ: Higher output current capability for high-power applications
4. IRS2453D: Integrated half-bridge driver with additional features

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

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