Back light module driver of a liquid crystal display for driving multiple lamps

摘要

A back light module driver of a liquid crystal display has an abnormal voltage detection unit and a loop protection unit. The abnormal voltage is connected between a boosting transformer and the loop protection unit. The loop protection unit is connected to a switching unit, that makes the boosting transformer outputs the high voltage driving power to multiple lamps. If the boosting transformer has voltage leakage or high abnormal voltage status the abnormal voltage detection unit will detect and then output a high output voltage to loop protection unit. The loop protection unit will immediately stop operation of the switching unit to stop driving the lamps.