IR21844S
Product Overview
Category
The IR21844S belongs to the category of integrated circuits (ICs) and is specifically designed for use in power management applications.
Use
This IC is commonly used for driving high-power N-channel MOSFETs in various applications such as motor drives, switch-mode power supplies, and Class D audio amplifiers.
Characteristics
- Package: The IR21844S is available in a 14-pin PDIP (Plastic Dual In-line Package) or SOIC (Small Outline Integrated Circuit) package.
- Essence: It serves as a high-speed power MOSFET and IGBT driver with independent high and low side referenced output channels.
- Packaging/Quantity: The IC is typically packaged in reels containing a specific quantity based on the manufacturer's specifications.
Specifications
The IR21844S features: - Wide supply voltage range: 10V to 20V - High output current: 2A peak - Propagation delay matching: 50ns typical - CMOS Schmitt-triggered inputs with pull-down - Undervoltage lockout for both channels - 3.3V and 5V input logic compatible
Detailed Pin Configuration
The IR21844S has a detailed pin configuration that includes pins for VCC, COM, HO, LO, VB, VS, and more. Refer to the datasheet for the complete pinout diagram.
Functional Features
- Independent high and low side outputs
- Floating channel designed for bootstrap operation
- Tolerant to negative transient voltage
- Gate drive supply range from 10V to 20V
- Under-voltage lockout for both channels
Advantages and Disadvantages
Advantages
- High output current capability
- Wide supply voltage range
- Compatibility with different input logic levels
Disadvantages
- Sensitivity to negative transient voltage
- Limited to driving N-channel MOSFETs
Working Principles
The IR21844S operates by providing high and low side gate drive outputs for driving N-channel power MOSFETs or IGBTs in a half-bridge configuration. It utilizes bootstrap operation to ensure efficient switching of the power devices.
Detailed Application Field Plans
The IR21844S finds extensive application in various fields including: - Motor control systems - Switch-mode power supplies - Class D audio amplifiers - Uninterruptible power supplies (UPS) - Renewable energy systems
Detailed and Complete Alternative Models
Some alternative models to the IR21844S include: - IR2110 - IRS21844 - FAN7382 - HIP4081A
In conclusion, the IR21844S is a versatile IC designed for driving high-power N-channel MOSFETs in a wide range of power management applications, offering high output current capability and compatibility with different input logic levels.
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10个与IR21844S在技术解决方案中的应用相关的常见问题及解答
What is IR21844S?
- IR21844S is a high voltage, high speed power MOSFET and IGBT driver with independent high and low side referenced output channels.
What are the typical applications of IR21844S?
- The typical applications of IR21844S include motor drives, solar inverters, UPS, and switched-mode power supplies.
What is the maximum supply voltage for IR21844S?
- The maximum supply voltage for IR21844S is 20V.
What is the maximum output current capability of IR21844S?
- The maximum output current capability of IR21844S is ±2A peak.
Does IR21844S have built-in deadtime control?
- Yes, IR21844S has built-in deadtime control to prevent shoot-through in the inverter bridge.
What is the operating frequency range for IR21844S?
- The operating frequency range for IR21844S is typically up to 500kHz.
Can IR21844S be used in half-bridge configurations?
- Yes, IR21844S can be used in half-bridge configurations.
What is the recommended operating temperature range for IR21844S?
- The recommended operating temperature range for IR21844S is -40°C to 125°C.
Does IR21844S have under-voltage lockout protection?
- Yes, IR21844S has under-voltage lockout protection to ensure proper operation under low voltage conditions.
Is IR21844S available in surface mount packages?
- Yes, IR21844S is available in surface mount packages for easy integration into PCB designs.