The LinkSwitch™-II dramatically simplifies low-power CV/CC charger designs by eliminating an optocoupler and secondary control circuitry. The device introduces a revolutionary control technique to provide very tight output voltage and current regulation, compensating for transformer and internal parameter tolerances along with input voltage variations. The device incorporates a 700 V power MOSFET, a novel ON/OFF control state machine, a high-voltage switched current source for self-biasing, frequency jittering, cycle-by-cycle current limit, and hysteretic thermal shutdown circuitry onto a monolithic IC.
