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IR21844
Product Overview
Category
The IR21844 belongs to the category of high-performance power MOSFET and IGBT drivers.
Use
It is used to drive high-power N-channel MOSFETs or IGBTs in various applications such as motor drives, solar inverters, and switched-mode power supplies.
Characteristics
- High voltage floating supply source for bootstrap operation
- Output fault protection
- CMOS Schmitt-triggered inputs with pull-down
- Undervoltage lockout for both channels
- 3.3V and 5V input logic compatible
- Tolerant to negative transient voltage
Package
The IR21844 comes in a compact and durable package suitable for surface mount technology (SMT) assembly.
Essence
The essence of the IR21844 lies in its ability to efficiently drive high-power MOSFETs and IGBTs while providing essential protection features.
Packaging/Quantity
The IR21844 is typically packaged in tubes or reels, with quantities varying based on manufacturer specifications.
Specifications
- Voltage Range: 10V to 20V
- Output Current: 2A peak
- Operating Temperature: -40°C to 125°C
- Propagation Delay: 120ns
- Input Threshold Voltage: 2.3V
Detailed Pin Configuration
- HO - High-side output
- VS - High-side floating supply voltage
- COM - Common connection
- LIN - Low-side input
- GND - Ground
- SD - Shutdown
- VCC - Logic supply voltage
- HIN - High-side input
Functional Features
- High-side and low-side gate driver in one package
- Bootstrap diode and capacitor integrated
- Built-in deadtime generation
- Over-current shutdown
Advantages
- Integrated bootstrap functionality reduces external component count
- Wide operating voltage range enhances versatility
- Robust fault protection mechanisms ensure system reliability
Disadvantages
- Relatively higher cost compared to basic driver ICs
- Requires careful PCB layout for optimal performance
Working Principles
The IR21844 operates by receiving input signals from a control circuit and generating the necessary high and low-side gate drive voltages to switch the connected MOSFET or IGBT. The integrated bootstrap circuit ensures efficient high-side gate drive without requiring an external isolated power supply.
Detailed Application Field Plans
The IR21844 finds extensive use in applications such as: - Motor drives for electric vehicles - Solar inverters for renewable energy systems - Switched-mode power supplies for industrial equipment
Detailed and Complete Alternative Models
- IR2184: Similar functionality with lower output current capability
- IRS21844S: Enhanced ESD protection and noise immunity
- IR2301: Higher output current and wider operating temperature range
In conclusion, the IR21844 serves as a reliable and efficient solution for driving high-power MOSFETs and IGBTs in diverse applications, offering a balance of performance, protection, and integration.
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Liste 10 perguntas e respostas comuns relacionadas à aplicação de IR21844 em soluções técnicas
What is IR21844?
- IR21844 is a high voltage, high speed power MOSFET and IGBT driver with independent high and low side referenced output channels.
What are the key features of IR21844?
- The key features include floating channel designed for bootstrap operation, gate drive supply range from 10 to 20V, and CMOS Schmitt-triggered inputs.
How can IR21844 be used in technical solutions?
- IR21844 can be used to drive high power MOSFETs and IGBTs in various applications such as motor drives, solar inverters, and UPS systems.
What is the maximum voltage rating for IR21844?
- The maximum voltage rating for IR21844 is typically around 600V.
What is the typical operating frequency range for IR21844?
- The typical operating frequency range for IR21844 is from a few kHz to several tens of kHz.
Does IR21844 have built-in protection features?
- Yes, IR21844 includes features such as under-voltage lockout for both channels and a shutdown function.
Can IR21844 be used in automotive applications?
- Yes, IR21844 is suitable for automotive applications such as motor control and power conversion.
What are the recommended thermal management practices for IR21844?
- It is recommended to use proper heat sinking and thermal vias to ensure efficient heat dissipation.
Are there any application notes or reference designs available for IR21844?
- Yes, Infineon, the manufacturer of IR21844, provides application notes and reference designs for various technical solutions.
Where can I purchase IR21844?
- IR21844 can be purchased from authorized distributors or directly from the manufacturer's website.