STMicroelectronics SRK2000ATR - Advanced Synchronous Rectification Controller

The SRK2000ATR from STMicroelectronics is a state-of-the-art synchronous rectification (SR) controller designed for LLC resonant converters that are widely used in high-performance power supply units. This advanced controller enhances the efficiency of these power supplies, particularly beneficial for applications where energy efficiency is paramount.

The SRK2000ATR integrates a control circuit that is capable of precisely driving the SR MOSFETs. By ensuring that the MOSFETs are turned on and off at the optimal moment, the SRK2000ATR minimizes power losses that typically occur during the rectification process. This timing precision is crucial for maintaining the high efficiency of the power conversion process.

One of the key features of the SRK2000ATR is its ability to operate in continuous conduction mode (CCM), discontinuous conduction mode (DCM), and burst mode, which makes it highly adaptable to various load conditions. This flexibility allows the controller to maintain high efficiency even under light load conditions, which is essential for meeting modern energy-saving standards.

The device is equipped with a 200V high-voltage startup source, which ensures a quick and reliable start-up. Additionally, the SRK2000ATR boasts an adaptive dead-time control, further optimizing the SR MOSFETs' conduction time to reduce power dissipation and enhance overall efficiency.

For safety and protection, the SRK2000ATR includes various features such as under-voltage lockout (UVLO), over-voltage protection (OVP), and thermal shutdown. These protective measures ensure the longevity and reliability of the power supply unit by preventing damage due to abnormal operating conditions.

Available in a compact SO-8 package, the SRK2000ATR is designed for easy integration into a wide range of applications, including server and telecom power supplies, flat-panel television power supplies, and high-efficiency adapters. Its small footprint allows for the design of power supplies with reduced size and increased power density, catering to the needs of modern electronic devices.