LT8316

LT8316 560VIN Micropower No-Opto Isolated Flyback Controller FEATURES n Wide Input Voltage Range: 16V to 560V (600V max) n No Opto-Isolator Required for Regulation n Quasi-Resonant Boundary Mode Operation n Constant-Current and Constant-Voltage Regulation n Low-Ripple Light Load Burst Mode® Operation n Low Quiescent Current: 75μA n Programmable Current Limit and Soft-Start n TSSOP Package with High-Voltage Spacing n Available in 20(15)-Lead Package with Extended Creepage Distance n AEC-Q100 Compliant with Exception n HBM ESD Classification Level 1C APPLICATIONS n Isolated Telecom, Automotive, Industrial, Medical Power Supplies n Isolated Off-Line Housekeeping Power Supplies n Electric Vehicles and Battery Stacks n Multioutput Isolated Power Supplies for Inverter Gate Drives DESCRIPTION The LT®8316 is a micropower, high voltage flyback controller. No opto-isolator is needed for regulation. The device samples the output voltage from the isolated flyback waveform appearing across a third winding on the transformer. Quasi-resonant boundary mode operation improves load regulation, reduces transformer size, and maintains high efficiency. At start-up, the LT8316 charges its INTVCC capacitor via a high voltage current source. During normal operation, the current source turns off and the device draws its power from a third winding on the transformer minimizing standby power dissipation. The LT8316 operates from a wide range of input supply voltages and can deliver up to 100W of powe...