FAN7602N

Overview

Category: Integrated Circuit (IC)

Use: Power Management IC

Characteristics: - High voltage startup - PWM controller for flyback converters - Built-in high-voltage MOSFET - Frequency jittering for EMI reduction - Auto-restart protection - Overload protection - Overvoltage protection - Over-temperature protection

Package: DIP-8, SOIC-8

Essence: The FAN7602N is a power management IC designed for use in flyback converters. It integrates a high-voltage startup circuit, a PWM controller, and various protection features into a single chip.

Packaging/Quantity: The FAN7602N is available in two package options - DIP-8 and SOIC-8. The quantity per package depends on the supplier.

Specifications

Input Voltage Range: 9V to 38V
Output Voltage Range: 5V to 24V
Maximum Output Power: 25W
Operating Frequency: 65kHz
Startup Current: 100μA
Operating Temperature Range: -40°C to +125°C

Pin Configuration

The FAN7602N has 8 pins arranged as follows:

```

| | --|1 2 3 |-- VCC --|4 5 6 |-- GND --|7 8 |-- FB |___________| ```

Pin Description: 1. VCC: Power supply input 2. GND: Ground 3. NC: No connection 4. GND: Ground 5. GND: Ground 6. NC: No connection 7. GND: Ground 8. FB: Feedback pin for output voltage regulation

Functional Features

High Voltage Startup: The FAN7602N can start up at high input voltages, making it suitable for a wide range of applications.
PWM Controller: It incorporates a pulse-width modulation (PWM) controller that regulates the output voltage of the flyback converter.
Built-in High-Voltage MOSFET: The IC includes a high-voltage MOSFET, eliminating the need for an external switch.
Frequency Jittering: The frequency jittering feature reduces electromagnetic interference (EMI) generated by the converter.
Auto-Restart Protection: In case of a fault or overload condition, the IC automatically restarts after a short delay.
Overload Protection: The FAN7602N provides protection against excessive load currents, preventing damage to the circuit.
Overvoltage Protection: It safeguards the system from voltage spikes or transients that could harm the connected devices.
Over-Temperature Protection: The IC monitors its own temperature and shuts down if it exceeds a safe operating limit.

Advantages and Disadvantages

Advantages: - Integrated design reduces component count and board space requirements. - Wide input voltage range allows for versatile applications. - Comprehensive protection features enhance system reliability. - Frequency jittering minimizes EMI emissions. - Auto-restart functionality improves fault tolerance.

Disadvantages: - Limited maximum output power of 25W may not be sufficient for high-power applications. - Only available in DIP-8 and SOIC-8 packages, limiting flexibility in PCB layout.

Working Principles

The FAN7602N operates as a flyback converter, which is a type of switched-mode power supply. It converts the input voltage into a regulated output voltage using a transformer and a high-voltage MOSFET. The PWM controller adjusts the duty cycle of the switching signal to regulate the output voltage. The IC incorporates various protection mechanisms to ensure safe and reliable operation.

Application Field Plans

The FAN7602N is commonly used in the following applications:

Power Adapters: It is suitable for designing power adapters used in consumer electronics, such as laptops, smartphones, and gaming consoles.
LED Lighting: The IC can be employed in LED driver circuits for efficient and reliable illumination systems.
Industrial Power Supplies: Its wide input voltage range and protection features make it suitable for industrial power supply applications.
Home Appliances: The FAN7602N can be utilized in power management circuits of home appliances like refrigerators, air conditioners, and washing machines.

Alternative Models

FAN7602: Similar to FAN7602N but without over-temperature protection.
FAN7602B: Enhanced version with additional features like burst mode operation and adjustable frequency.

Note: Please refer to the manufacturer's datasheet for detailed specifications and application guidelines.

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Listen Sie 10 häufige Fragen und Antworten im Zusammenhang mit der Anwendung von FAN7602N in technischen Lösungen auf

Sure! Here are 10 common questions and answers related to the application of FAN7602N in technical solutions:

Q: What is FAN7602N? A: FAN7602N is a high-performance, integrated power supply controller IC used in various technical solutions.
Q: What are the main features of FAN7602N? A: FAN7602N features include overvoltage protection, undervoltage lockout, adjustable frequency operation, and built-in soft-start function.
Q: What is the typical application of FAN7602N? A: FAN7602N is commonly used in offline flyback converters, such as AC-DC adapters, LED drivers, and auxiliary power supplies.
Q: What is the maximum input voltage supported by FAN7602N? A: The maximum input voltage supported by FAN7602N is typically around 30V.
Q: Can FAN7602N handle high output power applications? A: Yes, FAN7602N can handle high output power applications up to several tens of watts, depending on the design and external components used.
Q: Does FAN7602N have built-in protection features? A: Yes, FAN7602N has built-in protection features like overcurrent protection, thermal shutdown, and short-circuit protection.
Q: How does FAN7602N achieve adjustable frequency operation? A: FAN7602N achieves adjustable frequency operation through an external resistor connected to its RT pin.
Q: Can FAN7602N operate in continuous or discontinuous mode? A: FAN7602N can operate in both continuous and discontinuous modes, depending on the load conditions and design parameters.
Q: What is the typical efficiency of FAN7602N-based power supplies? A: The typical efficiency of FAN7602N-based power supplies can range from 80% to 90%, depending on the specific application and operating conditions.
Q: Are there any application notes or reference designs available for FAN7602N? A: Yes, the manufacturer of FAN7602N provides application notes and reference designs that can help in implementing the IC in various technical solutions.

Please note that the answers provided here are general and may vary based 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.