IR2131STR

Product Overview

Category: Integrated Circuit (IC)

Use: The IR2131STR is a high-performance, three-phase bridge driver IC designed for use in motor control applications. It provides an interface between the microcontroller and power MOSFETs to drive three-phase brushless DC motors.

Characteristics: - High voltage capability - Low power consumption - Fast switching speed - Built-in protection features - Compact package size

Package: The IR2131STR is available in a small outline integrated circuit (SOIC) package, which allows for easy integration into motor control systems.

Essence: The essence of the IR2131STR lies in its ability to efficiently control the operation of three-phase brushless DC motors, enabling precise speed and torque control.

Packaging/Quantity: The IR2131STR 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: Up to 500mA per phase
• Operating Temperature Range: -40°C to 125°C
• Maximum PWM Frequency: 25kHz
• Fault Protection Features: Overcurrent, overtemperature, undervoltage lockout

Pin Configuration

The IR2131STR has a total of 16 pins, which are assigned specific functions as follows:

1. VCC - Power supply voltage input
2. GND - Ground reference
3. HO1 - High-side gate driver output for Phase 1
4. LO1 - Low-side gate driver output for Phase 1
5. VS - Bootstrap supply voltage input
6. VB - Bootstrap capacitor voltage output
7. HO2 - High-side gate driver output for Phase 2
8. LO2 - Low-side gate driver output for Phase 2
9. HO3 - High-side gate driver output for Phase 3
10. LO3 - Low-side gate driver output for Phase 3
11. SD - Shutdown input (active low)
12. VREF - Reference voltage input
13. CS - Current sense input
14. RT - External resistor connected to set dead time
15. CT - External capacitor connected to set dead time
16. VSS - Ground reference

Functional Features

• High-speed switching: The IR2131STR is capable of driving power MOSFETs at high frequencies, allowing for efficient motor control.
• Integrated protection features: The IC includes built-in protection against overcurrent, overtemperature, and undervoltage conditions, ensuring safe operation of the motor.
• Bootstrap capacitor voltage generation: The VB pin generates a bootstrap capacitor voltage required for driving the high-side MOSFETs.

Advantages and Disadvantages

Advantages: - High-performance motor control - Compact package size - Built-in protection features - Efficient switching speed

Disadvantages: - Limited output current capability (up to 500mA per phase) - Requires external components for setting dead time

Working Principles

The IR2131STR operates by receiving control signals from a microcontroller and amplifying them to drive the power MOSFETs that control the three-phase brushless DC motor. It utilizes a bootstrap capacitor to generate the necessary voltage for driving the high-side MOSFETs. The IC also incorporates protection features to ensure safe operation and prevent damage to the motor or the IC itself.

Detailed Application Field Plans

The IR2131STR is widely used in various motor control applications, including: - Electric vehicles - Industrial automation - Robotics - HVAC systems - Appliances

Alternative Models

Some alternative models that offer similar functionality to the IR2131STR include: - IR2132STR - IR2133STR - IR2136STR - IR2137STR

These alternative models may have slight differences in specifications and pin configuration, but they serve the same purpose of driving three-phase brushless DC motors.

In conclusion, the IR2131STR is a high-performance integrated circuit designed for motor control applications. Its compact size, efficient switching speed, and built-in protection features make it an ideal choice for various industries.