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FAN7621N

FAN7621N

Overview

Product Category

FAN7621N belongs to the category of integrated circuits (ICs) specifically designed for power management applications.

Use

This IC is commonly used in power supply systems, particularly in switch-mode power supplies (SMPS), where it plays a crucial role in regulating and controlling the power flow.

Characteristics

  • FAN7621N is a highly efficient and reliable IC that offers excellent performance in power management applications.
  • It operates at a wide input voltage range, making it suitable for various power supply designs.
  • The IC incorporates advanced protection features such as overvoltage protection (OVP), overcurrent protection (OCP), and thermal shutdown.
  • It is designed to provide stable and accurate output voltage regulation, ensuring the proper functioning of the power supply system.

Package and Quantity

FAN7621N is available in a compact and industry-standard package, such as a 16-pin dual in-line package (DIP). It is typically sold in reels or tubes containing a specific quantity, usually around 250 units per reel.

Specifications

  • Input Voltage Range: 10V - 20V
  • Output Voltage Range: 3V - 15V
  • Maximum Output Current: 2A
  • Operating Temperature Range: -40°C to 85°C
  • Package Type: 16-pin DIP

Pin Configuration

The detailed pin configuration of FAN7621N is as follows:

| Pin Number | Pin Name | Description | |------------|----------|-------------| | 1 | VCC | Power Supply Voltage Input | | 2 | GND | Ground | | 3 | FB | Feedback Input for Voltage Regulation | | 4 | COMP | Compensation Pin for Stability Control | | 5 | CS | Current Sense Input | | 6 | VREF | Reference Voltage Output | | 7 | RT/CT | Timing Components Connection | | 8 | CT | Timing Capacitor Connection | | 9 | OSC | Oscillator Frequency Control | | 10 | SS | Soft-Start Control | | 11 | SD | Shutdown Control | | 12 | OVP | Overvoltage Protection Input | | 13 | OCP | Overcurrent Protection Input | | 14 | INV | Inverting Input for Error Amplifier | | 15 | COMP | Compensation Pin for Stability Control | | 16 | HV | High-Voltage Power Supply |

Functional Features

  • FAN7621N incorporates a high-voltage startup circuit, enabling it to operate directly from the rectified AC line voltage.
  • It includes an error amplifier that compares the feedback voltage with the reference voltage and adjusts the duty cycle of the PWM (Pulse Width Modulation) signal accordingly.
  • The IC features a built-in oscillator that generates the necessary timing signals for controlling the power supply system.
  • It offers soft-start functionality, gradually ramping up the output voltage to prevent excessive inrush current during startup.
  • FAN7621N provides comprehensive protection features such as overvoltage and overcurrent protection, ensuring the safety and reliability of the power supply system.

Advantages and Disadvantages

Advantages

  • High efficiency and reliability in power management applications.
  • Wide input voltage range allows for versatile power supply designs.
  • Advanced protection features enhance system safety.
  • Compact package size facilitates easy integration into various electronic devices.

Disadvantages

  • Limited maximum output current may restrict its use in high-power applications.
  • Requires external timing components for proper operation.

Working Principles

FAN7621N operates based on the principles of pulse width modulation (PWM). It generates a PWM signal that controls the switching of power transistors, regulating the output voltage of the power supply. The feedback loop continuously compares the actual output voltage with the desired reference voltage, adjusting the duty cycle of the PWM signal to maintain stable and accurate voltage regulation.

Application Field Plans

FAN7621N finds extensive application in various power supply systems, including: - AC-DC converters - LED drivers - Battery chargers - Industrial power supplies - Consumer electronics

Alternative Models

Some alternative models that offer similar functionality to FAN7621N include: - FAN7602: A lower-power variant suitable for low-current applications. - FAN7625: Provides higher maximum output current for more demanding power supply designs. - FAN7626: Offers additional features such as frequency hopping for improved electromagnetic interference (EMI) performance.

In conclusion, FAN7621N is a highly efficient and reliable integrated circuit designed for power management applications. Its wide input voltage range, advanced protection features, and compact package make it suitable for various power supply designs. While it has some

10个与FAN7621N在技术解决方案中的应用相关的常见问题及解答

Sure! Here are 10 common questions and answers related to the application of FAN7621N in technical solutions:

Q1: What is FAN7621N? A1: FAN7621N is a high-performance, half-bridge gate driver IC designed for driving MOSFETs and IGBTs in various power applications.

Q2: What is the maximum voltage rating of FAN7621N? A2: The maximum voltage rating of FAN7621N is typically around 600V.

Q3: Can FAN7621N be used in both AC and DC applications? A3: Yes, FAN7621N can be used in both AC and DC applications as it supports both types of power supplies.

Q4: What is the maximum operating frequency of FAN7621N? A4: The maximum operating frequency of FAN7621N is typically around 500kHz.

Q5: Does FAN7621N have built-in protection features? A5: Yes, FAN7621N has built-in protection features such as over-current protection, under-voltage lockout, and thermal shutdown.

Q6: Can FAN7621N drive multiple MOSFETs or IGBTs simultaneously? A6: Yes, FAN7621N can drive multiple MOSFETs or IGBTs simultaneously as it has two independent outputs.

Q7: Is FAN7621N suitable for high-power applications? A7: Yes, FAN7621N is suitable for high-power applications as it can handle high voltages and currents.

Q8: What is the recommended input voltage range for FAN7621N? A8: The recommended input voltage range for FAN7621N is typically between 10V and 20V.

Q9: Can FAN7621N be used in motor control applications? A9: Yes, FAN7621N can be used in motor control applications as it provides efficient and reliable gate drive signals.

Q10: Does FAN7621N require external components for operation? A10: Yes, FAN7621N requires external components such as bootstrap diodes, gate resistors, and decoupling capacitors for proper operation.

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 of FAN7621N for detailed information and guidelines.