220 VAC in 28-W non-isolated T8 tube LED driver reference design

The reference design presents non-isolated LED driver solution for 28W T8 tube application. The valley switching mode controller TPS92314 is used to achieve high effiency (>93%) over input range. Inherent PFC achieves high PF>0.92. The design includes EMI driver board and LED driver board. The overall size is around 100mmx16mmx14.5mm.