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STR-W6750F
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STR-W6750F

Product Overview

Category

The STR-W6750F belongs to the category of integrated circuits (ICs) specifically designed for power supply applications.

Use

This IC is primarily used in power supply units, providing efficient and reliable power conversion for various electronic devices.

Characteristics

  • High efficiency: The STR-W6750F offers high power conversion efficiency, minimizing energy loss during operation.
  • Compact package: It comes in a small form factor package, allowing for space-saving integration into power supply designs.
  • Wide input voltage range: This IC can handle a wide range of input voltages, making it suitable for different power supply applications.
  • Overcurrent protection: It incorporates overcurrent protection features to safeguard against potential damage caused by excessive current flow.
  • Thermal shutdown protection: The STR-W6750F includes thermal shutdown protection, preventing overheating and ensuring safe operation.

Package and Quantity

The STR-W6750F is available in a compact and industry-standard TO-220F package. It is typically sold in reels or tubes containing a specific quantity, such as 50 or 100 units per package.

Specifications

  • Input Voltage Range: 85V AC to 265V AC
  • Output Power: Up to 75W
  • Switching Frequency: 65kHz
  • Standby Power Consumption: Less than 0.5W
  • Operating Temperature Range: -40°C to +125°C
  • Supply Voltage: 9V to 20V

Pin Configuration

The STR-W6750F has a total of 7 pins, each serving a specific function:

  1. VCC: Power supply input pin.
  2. GND: Ground reference pin.
  3. FB: Feedback pin for regulating the output voltage.
  4. COMP: Compensation pin for stability control.
  5. DRAIN: High-voltage power switch drain pin.
  6. SOURCE: High-voltage power switch source pin.
  7. VCC2: Secondary power supply input pin.

Functional Features

  • Pulse Width Modulation (PWM) Control: The STR-W6750F utilizes PWM control to regulate the output voltage accurately.
  • Overload Protection: It incorporates overload protection, automatically shutting down in case of excessive load conditions.
  • Soft Start Function: This IC includes a soft start function, gradually increasing the output voltage to prevent sudden surges.
  • Frequency Jittering: The STR-W6750F employs frequency jittering techniques to reduce electromagnetic interference (EMI).
  • Auto Restart: In the event of a fault or abnormal condition, the IC features an auto restart function for improved reliability.

Advantages and Disadvantages

Advantages

  • High efficiency leads to reduced power consumption and heat generation.
  • Compact package allows for space-saving integration in various applications.
  • Wide input voltage range enables versatility in power supply designs.
  • Overcurrent and thermal shutdown protection enhance safety and reliability.
  • PWM control ensures accurate regulation of the output voltage.

Disadvantages

  • Limited output power compared to higher-rated ICs.
  • May require additional external components for specific applications.
  • Not suitable for high-power applications exceeding its maximum power rating.

Working Principles

The STR-W6750F operates on the principle of pulse width modulation (PWM). It converts the input voltage into a high-frequency square wave, which is then filtered and regulated to provide a stable output voltage. The PWM control circuitry adjusts the duty cycle of the square wave to maintain the desired output voltage level.

Detailed Application Field Plans

The STR-W6750F finds application in various power supply units, including but not limited to: - Consumer electronics: TVs, audio systems, DVD players, etc. - Computer peripherals: Monitors, printers, scanners, etc. - Industrial equipment: Motor drives, control systems, lighting, etc. - Telecommunications: Routers, switches, modems, etc.

Detailed and Complete Alternative Models

  1. STR-W6753F: Similar to the STR-W6750F, but with higher output power capability.
  2. STR-W6754F: Offers additional features such as built-in protection circuits and advanced control options.
  3. STR-W6756F: Designed for high-power applications, providing increased output power handling capacity.

These alternative models offer varying specifications and capabilities, allowing designers to choose the most suitable option based on their specific requirements.

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Senaraikan 10 soalan dan jawapan biasa yang berkaitan dengan aplikasi STR-W6750F dalam penyelesaian teknikal

Sure! Here are 10 common questions and answers related to the application of STR-W6750F in technical solutions:

  1. Q: What is the STR-W6750F? A: The STR-W6750F is a power IC (integrated circuit) designed for switching power supplies used in various electronic devices.

  2. Q: What are the key features of the STR-W6750F? A: The key features include built-in MOSFET, overvoltage protection, overcurrent protection, thermal shutdown, and soft-start function.

  3. Q: What is the maximum input voltage supported by the STR-W6750F? A: The maximum input voltage supported is typically around 650V.

  4. Q: Can the STR-W6750F be used in offline flyback converters? A: Yes, the STR-W6750F is specifically designed for offline flyback converters commonly used in applications like TVs, monitors, and audio systems.

  5. Q: What is the typical output power range of the STR-W6750F? A: The typical output power range is between 20W to 60W, making it suitable for medium-power applications.

  6. Q: Does the STR-W6750F require an external start-up resistor? A: No, the STR-W6750F has an internal start-up resistor, eliminating the need for an external one.

  7. Q: How does the overvoltage protection work in the STR-W6750F? A: The overvoltage protection monitors the output voltage and shuts down the power supply if it exceeds a certain threshold, protecting the connected devices.

  8. Q: Is the STR-W6750F compatible with both 50Hz and 60Hz AC mains? A: Yes, the STR-W6750F is designed to work with both 50Hz and 60Hz AC mains frequencies.

  9. Q: Can the STR-W6750F be used in battery-powered applications? A: No, the STR-W6750F is specifically designed for offline power supplies and requires an AC input.

  10. Q: Are there any application notes or reference designs available for the STR-W6750F? A: Yes, the manufacturer provides application notes and reference designs that can help in implementing the STR-W6750F in various technical solutions.

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