STMicroelectronics STNRG011TR, Power Factor Controller

The STNRG011 embodies a multi-mode (transition-mode and DCM) PFC controller, a high-voltage double-ended controller for the LLC resonant half-bridge, an 800 V-rated startup generator and a sophisticated digital engine, that manage optimal operation of three blocks.
The device comes in a 20-pin SO package and offers an advanced solution for power-factor-corrected high-efficiency converters supposed to comply with the most stringent energy saving regulations.

Digital combo multi-mode PFC + time-shift LLC resonant half-bridge controller
Onboard 800 V startup circuit, line sense and X-cap discharge compliant with IEC 62368-1, for reduced standby power
Enhanced fixed on time multi-mode TM PFC controller with input voltage feedforward, THD optimizer and frequency limitation
Complete set of PFC protections
Time-shift control of resonant half-bridge
Enhanced burst-mode at light load with fast transient response and line adaptive half-bridge brown-out protection
Complete set of half-bridge protections
Available in SO20 package