LNK460VG

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management IC

Characteristics: - High-voltage switcher - Energy-efficient - Low standby power consumption - Wide input voltage range - Compact size

Package: TO-220

Essence: LNK460VG is a power management integrated circuit designed for high-voltage switching applications. It offers energy-efficient solutions with low standby power consumption, making it suitable for various power management needs.

Packaging/Quantity: The LNK460VG is typically packaged in a TO-220 package and is available in quantities suitable for both individual and industrial use.

Specifications

The LNK460VG has the following specifications:

• Input Voltage Range: 85VAC to 265VAC
• Output Power: Up to 20W
• Switching Frequency: 132 kHz
• Maximum Duty Cycle: 75%
• Operating Temperature Range: -40°C to +150°C
• Efficiency: Up to 88%

Detailed Pin Configuration

The LNK460VG features a standard pin configuration as follows:

1. VCC: Power supply input
2. BP/M: Brownout protection or multi-function pin
3. FB: Feedback pin for output regulation
4. D: Drain pin for primary-side MOSFET
5. S: Source pin for primary-side MOSFET
6. GND: Ground reference
7. NC: No connection pin

Functional Features

The LNK460VG offers several functional features that make it a versatile power management IC:

1. Primary-Side Regulation (PSR): The PSR technology eliminates the need for an optocoupler and secondary-side feedback components, reducing cost and complexity.
2. Auto-restart Protection: In case of a fault condition, the IC automatically enters a self-recovery mode, ensuring continuous operation and protection against system failures.
3. Frequency Jittering: The frequency jittering feature reduces EMI emissions, enabling compliance with international electromagnetic compatibility (EMC) standards.
4. Advanced Thermal Foldback: This feature protects the IC from overheating by reducing the switching frequency as the temperature rises, preventing thermal damage.

Advantages and Disadvantages

Advantages: - High efficiency - Compact size - Cost-effective solution - Wide input voltage range - Integrated protection features

Disadvantages: - Limited output power (up to 20W) - Requires external components for complete power management solution

Working Principles

The LNK460VG operates on a flyback topology, where energy is stored in the transformer during the switch-on time and transferred to the output during the switch-off time. It utilizes primary-side regulation (PSR) technology to achieve accurate output voltage regulation without the need for an optocoupler or secondary-side feedback components.

The IC incorporates a high-voltage MOSFET, which enables efficient power conversion and reduces power losses. By utilizing advanced control algorithms, the LNK460VG achieves high efficiency across a wide load range.

Detailed Application Field Plans

The LNK460VG finds applications in various fields, including:

1. LED Lighting: The IC can be used in LED drivers for efficient power management and dimming control.
2. Home Appliances: It can be employed in power supplies for appliances such as refrigerators, air conditioners, and washing machines.
3. Industrial Equipment: The LNK460VG is suitable for power management in industrial equipment like motor drives, power tools, and automation systems.
4. Consumer Electronics: It can be utilized in power adapters, chargers, and other consumer electronic devices requiring efficient power conversion.

Detailed and Complete Alternative Models

1. LNK562VG: Similar to LNK460VG, but with higher output power capability (up to 30W).
2. LNK564VG: Offers additional features like built-in over-temperature protection and adjustable current limit.
3. LNK566VG: Suitable for applications requiring higher input voltage range (up to 400VAC).

These alternative models provide similar functionality to the LNK460VG while offering different specifications and features to meet specific application requirements.

In conclusion, the LNK460VG is a versatile power management IC designed for high-voltage switching applications. With its energy-efficient operation, compact size, and integrated protection features, it finds applications in various fields such as LED lighting, home appliances, industrial equipment, and consumer electronics. The detailed pin configuration, functional features, advantages, and disadvantages make it a suitable choice for efficient power management solutions.