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IR2085S
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IR2085S

Product Overview

Category: Integrated Circuit (IC)

Use: The IR2085S is a high-performance integrated circuit designed for use in various electronic applications. It is specifically used for controlling and driving power MOSFETs (Metal-Oxide-Semiconductor Field-Effect Transistors) in switch-mode power supplies.

Characteristics: - High voltage level shifting capability - Low propagation delay times - Wide operating voltage range - Protection features against overcurrent and overvoltage conditions

Package: The IR2085S is available in a compact and industry-standard 8-pin SOIC (Small Outline Integrated Circuit) package.

Essence: The essence of the IR2085S lies in its ability to efficiently control and drive power MOSFETs, enabling the creation of reliable and high-performance switch-mode power supplies.

Packaging/Quantity: The IR2085S is typically packaged 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 manufacturer.

Specifications

  • Supply Voltage Range: 10V to 20V
  • Output Current: Up to 200mA
  • Operating Temperature Range: -40°C to +125°C
  • Input Logic Threshold Voltage: 2.5V (typical)
  • Output Voltage Swing: 10V (typical)
  • Maximum Propagation Delay Time: 250ns (typical)

Detailed Pin Configuration

The IR2085S features the following pin configuration:

  1. VCC: Power supply input pin (+10V to +20V)
  2. HO: High-side gate driver output
  3. LO: Low-side gate driver output
  4. COM: Common ground reference
  5. SD: Shutdown input (active low)
  6. VS: Bootstrap supply voltage input
  7. VB: High-side floating supply voltage input
  8. FB: Feedback input for error amplifier

Functional Features

The IR2085S offers the following functional features:

  1. High Voltage Level Shifting: The IC provides efficient level shifting capability to drive power MOSFETs at high voltages, ensuring reliable switching performance.

  2. Fast Propagation Delay Times: With low propagation delay times, the IR2085S enables precise control and synchronization of power MOSFET switching, resulting in improved overall system efficiency.

  3. Overcurrent and Overvoltage Protection: The integrated circuit incorporates protection features to safeguard against overcurrent and overvoltage conditions, enhancing the reliability and durability of the switch-mode power supply.

Advantages and Disadvantages

Advantages: - High voltage level shifting capability - Low propagation delay times - Wide operating voltage range - Built-in protection features

Disadvantages: - Limited output current capacity (up to 200mA) - Requires external components for complete switch-mode power supply implementation

Working Principles

The IR2085S operates based on a combination of internal circuitry and external components. It utilizes an error amplifier to compare the feedback voltage with a reference voltage, generating an error signal. This signal is then amplified and used to control the gate driver outputs, which in turn control the power MOSFETs. By adjusting the gate voltage of the MOSFETs, the IR2085S regulates the power flow in the switch-mode power supply.

Detailed Application Field Plans

The IR2085S finds applications in various fields where switch-mode power supplies are utilized. Some specific application areas include:

  1. Power Electronics: The IC is commonly used in power electronic systems such as motor drives, uninterruptible power supplies (UPS), and inverters.

  2. Lighting Systems: The IR2085S can be employed in lighting systems, including LED drivers and ballasts, to efficiently control the power delivery.

  3. Industrial Automation: In industrial automation applications, the IC can be utilized in switch-mode power supplies for controlling various equipment and machinery.

Detailed and Complete Alternative Models

  1. IR2104: Similar to the IR2085S, this IC is designed for high-performance power MOSFET driving applications. It offers additional features such as an integrated oscillator and dead-time control.

  2. IRS21844: This IC provides similar functionality to the IR2085S but with higher output current capacity, making it suitable for driving larger power MOSFETs.

  3. FAN7388: Designed for half-bridge and full-bridge motor driver applications, this IC can also be used for power MOSFET driving in switch-mode power supplies.

  4. UC3843: Although not specifically designed for power MOSFET driving, this IC is widely used in switch-mode power supply control circuits due to its versatile features and availability.

These alternative models offer similar functionalities to the IR2085S and can be considered based on specific application requirements.

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Sebutkan 10 pertanyaan dan jawaban umum terkait penerapan IR2085S dalam solusi teknis

Sure! Here are 10 common questions and answers related to the application of IR2085S in technical solutions:

  1. Q: What is IR2085S? A: IR2085S is a high-performance half-bridge gate driver IC designed for driving MOSFETs and IGBTs in various applications.

  2. Q: What voltage range does IR2085S support? A: IR2085S supports a wide voltage range from 10V to 20V, making it suitable for many different power supply designs.

  3. Q: Can IR2085S be used in motor control applications? A: Yes, IR2085S can be used in motor control applications as it provides efficient and reliable gate drive signals for MOSFETs and IGBTs.

  4. Q: Does IR2085S have built-in protection features? A: Yes, IR2085S incorporates various protection features such as under-voltage lockout (UVLO), over-current protection (OCP), and thermal shutdown.

  5. Q: What is the maximum operating frequency of IR2085S? A: The maximum operating frequency of IR2085S is typically around 500kHz, allowing for high-speed switching in power electronics applications.

  6. Q: Can IR2085S be used in high-power applications? A: Yes, IR2085S is suitable for high-power applications as it can handle high peak output currents and has low propagation delay times.

  7. Q: Is IR2085S compatible with both 3.3V and 5V logic levels? A: Yes, IR2085S is compatible with both 3.3V and 5V logic levels, providing flexibility in interfacing with different microcontrollers or control circuits.

  8. Q: Can IR2085S be used in automotive applications? A: Yes, IR2085S is designed to meet the requirements of automotive applications and can operate in harsh environments with its robust design.

  9. Q: Does IR2085S have an enable pin for controlling the output stage? A: Yes, IR2085S has an enable pin (EN) that allows for easy control of the output stage, enabling or disabling the gate drive signals as needed.

  10. Q: Are there any application notes or reference designs available for IR2085S? A: Yes, Infineon Technologies provides application notes and reference designs for IR2085S, offering guidance on its implementation in various technical solutions.

Please note that the answers provided here are general and may vary depending on specific application requirements. It is always recommended to refer to the datasheet and application notes provided by the manufacturer for detailed information.