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Demonstration circuit 2332A-A is a multiphase boost converter expander that features the LT8551. The DC2332A-A uses the LTC3769 as primary controller and LT8551 as a phase extender. The increased number of power phases, allowed by the LT8551, results in higher output power without a corresponding increase in design difficulty or a sacrifice of the primary controller LTC3769 features.
The input voltage range of DC2332A-A is from 6V to 46V and the output is 48V. The maximum input current is 10A per power section, so the maximum input current of DC2332A-A is 50A. It can produce a 25A output current and output power of 1,200W with an input voltage of 24V. Correspondingly, output current will drop to 12A and output power to 576W at 12VIN. Higher output power can be achieved at a 12VIN if heat sinks are installed, see Parts List.