The L6599AD from STMicroelectronics is a highly sophisticated resonant controller IC designed for high-efficiency resonant power supplies. This advanced controller is particularly suitable for applications that require energy-efficient solutions, such as flat-panel televisions, high-efficiency adapters, and power supplies for servers and telecommunications equipment.

Key Features

• High-Voltage Capability: The L6599AD operates with a supply voltage up to 18 V, making it robust against high-voltage scenarios often encountered in power supply units.
• Integrated Start-Up Circuitry: This feature allows the device to self-supply directly from the rectified mains, eliminating the need for an auxiliary bias winding and reducing overall complexity and cost.
• Adjustable Dead-Time: This provides flexibility and optimization of system performance, enabling the user to fine-tune the controller for specific circuit requirements.
• Pulse Skipping: To enhance performance at light loads, the L6599AD includes a pulse skipping feature that helps maintain high efficiency across a wide range of operating conditions.
• Soft-Start and Soft-Shutdown: These features ensure a controlled ramp-up and ramp-down of the output voltage, which helps reduce stress on components and increases system reliability.
• Built-In Protection Features: The L6599AD comes with a comprehensive set of protections, including overcurrent, overvoltage, and thermal shutdown, to safeguard the power supply and the load under fault conditions.

Applications

The versatility of the L6599AD makes it an ideal choice for a wide array of high-performance power supply designs. It is especially well-suited for:

• Switched Mode Power Supplies (SMPS)
• LED backlighting units for LCD TVs
• Adapters and power supplies for laptops and PCs
• Power supplies for servers and telecom systems

With its advanced features and comprehensive protection mechanisms, the L6599AD resonant controller from STMicroelectronics is a premier choice for designers looking to create efficient, reliable, and cost-effective power solutions.