January 06, 2025 
Professional magazine and portal dedicated to electronics STMicroelectronics’ single-chip digital-power controller simplifies design and increases flexibility in LED-lighting applications
STMicroelectronics’ STNRG012 is a highly integrated and space-saving digital power controller with advanced distortion mitigation that delivers an ideal solution for LED-lighting applications.
The device contains a multimode power-factor correction (PFC) controller, resonant half-bridge controller, and 800V startup circuit, managed by a digital engine. The PFC controller changes dynamically between transition-mode, discontinuous-current mode (DCM), and valley skipping for optimum efficiency. The half-bridge controller executes ST’s patented time-shift control (TSC) for accurate soft switching.
With an input-voltage range up to 305VAC, the STNRG012 also operates from a DC supply targeting designs into both battery-powered and line-powered applications up to 300W.
The digital engine is hosted on an 8-bit core and performs optimized control algorithms. It manages the PFC and half-bridge circuits via high-speed state-machine event driven (SMED) peripherals (more info).
