ST-ONE

ST-ONE is a fully integrated controller for smart chargers. This is the world’s first digital controller embedding ARM Cortex M0+ core, an offline programmable controller with synchronous rectification, and USB PD PHY in a single package. Such a system is specifically designed to control ZVS non-complementary active clamp flyback converters to create high power density chargers and adapters with USB-PD interface. The device includes an active clamp flyback controller and its HV start-up on the primary side, a microcontroller and all the peripherals required to control the conversion and the USB-PD communication on the secondary side. The two sides are connected through an embedded galvanically isolated dual communication channel. A dedicated memory stores a default device configuration during factory process. The user can change or adapt this memory area to fit the final product specifications.

• ZVS non-complementary active clamp flyback controller
• 800V high voltage start-up with integrated input voltage sensing and brown-in/out functions
• Active input filter capacitor discharge circuitry for reduced standby power compliant
• Fully integrated USB-PD PHY with 24V tolerant protection and integrated load switch driver
• ARM® 32-bit Cortex®-M0+ MCU with 64kB flash memory
• Reinforced galvanically isolated dual communication channel compliant with IEC 62368:4 kV pk
• Synchronous rectification and USB-PD 3.1 PPS interface