The L6699DTR by STMicroelectronics is a high voltage dc/dc controller that supports a wide input voltage range and delivers up to 600 volts of output. It includes various protection functions, such as overload, short-circuit, and input under-voltage protection. The part is energy-saving, easy to use, and cost-effective. It also features a high switching frequency and fast transient response. It is designed to provide improved efficiency and system reliability in applications such as power supplies, e-bikes, and automotive systems.