The Analog Devices LT3800 in this design will operate from a Vin range of 20V – 55V and outputs 12V @ 6.25A (75W). A soft-start feature controls the output voltage slew rate at start-up, reducing current surges and voltage overshoots. The modes of operation, Burst Mode, Discontinuous Current Mode and Continuous Current Mode, are jumper selectable. Both Burst Mode and Discontinuous Current Mode increase the efficiency at light loads. Continuous Current Mode will maintain a constant switching frequency regardless of the load current required.
This design is suitable for a wide range of industrial control systems, 12V/42V automotive, and 48V Telecom power applications
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