DI-33, TNY268PN, Wide Range DVD Supply: <50 mW No-load Consumption

DI-33, Reference Design for TNY268PN, Wide Range DVD Supply: <50 mW No-load Consumption. An optional low voltage bias circuit, D9 and C10, Powers U1 via R6, reducing light and zero load power consumption. This provides bias current that would otherwise be provided from the DRAIN by the internal high voltage current source