FAN7602BN

Overview

Category: Integrated Circuit (IC)

Use: Power Management IC

Characteristics: - High voltage startup - Current mode control - Frequency modulation for EMI reduction - Built-in leading-edge blanking (LEB) - Internal slope compensation - Overload protection - Overvoltage protection - Overcurrent protection - Thermal shutdown protection

Package: DIP-8

Essence: The FAN7602BN is a power management integrated circuit designed for offline flyback converters. It provides various protection features and control functions to ensure efficient and reliable power delivery.

Packaging/Quantity: The FAN7602BN is typically sold in reels of 2500 units.

Specifications

• Input Voltage Range: 85VAC to 265VAC
• Output Voltage Range: 5V to 24V
• Maximum Output Power: 10W
• Operating Temperature Range: -40°C to +105°C
• Switching Frequency: 65kHz

Pin Configuration

The FAN7602BN has the following pin configuration:

1. VCC: Power supply input
2. GND: Ground reference
3. FB: Feedback pin for output voltage regulation
4. COMP: Compensation pin for loop stability
5. CS: Current sense input for current mode control
6. DRV: Gate driver output for external MOSFET
7. DRAIN: Drain pin for power switch
8. NC: No connection

Functional Features

1. High Voltage Startup: The FAN7602BN can start up from a high input voltage, making it suitable for a wide range of applications.
2. Current Mode Control: The IC utilizes current mode control for improved stability and transient response.
3. Frequency Modulation: Frequency modulation is employed to reduce electromagnetic interference (EMI) emissions.
4. Built-in Leading-Edge Blanking (LEB): The LEB feature prevents false triggering of the current sense comparator during the leading edge of the current waveform.
5. Internal Slope Compensation: Internal slope compensation ensures stable operation and prevents subharmonic oscillation.
6. Protection Features: The FAN7602BN incorporates overload, overvoltage, overcurrent, and thermal shutdown protection mechanisms to safeguard the circuit and connected components.

Advantages and Disadvantages

Advantages: - Wide input voltage range allows for versatile applications - Current mode control enhances stability and transient response - Frequency modulation reduces EMI emissions - Built-in leading-edge blanking prevents false triggering - Internal slope compensation ensures stable operation - Comprehensive protection features provide circuit and component safety

Disadvantages: - Limited maximum output power of 10W may not be suitable for high-power applications - DIP-8 package may require additional space compared to smaller surface-mount packages

Working Principles

The FAN7602BN operates as an offline flyback converter. It utilizes a current mode control scheme to regulate the output voltage. The IC starts up from a high input voltage and employs frequency modulation to reduce EMI emissions. The built-in leading-edge blanking feature prevents false triggering during the leading edge of the current waveform. Internal slope compensation ensures stable operation and prevents subharmonic oscillation. The IC also incorporates various protection mechanisms to safeguard the circuit and connected components.

Application Field Plans

The FAN7602BN is commonly used in the following application fields:

1. Power adapters
2. LED lighting
3. Home appliances
4. Industrial equipment
5. Consumer electronics

Alternative Models

Some alternative models that offer similar functionality to the FAN7602BN include:

1. FAN7602CN
2. FAN7602DN
3. FAN7602EN
4. FAN7602FN

These models are part of the same IC family and provide comparable features and specifications.

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