We have an application for an interleaved-output LM5119 based on the PMP7819 reference design. The output current levels and types of loads will vary greatly, including powering up into (and/or, being connected to) discharged batteries and ultracapacitor banks. This will result in the LM119 being forced into current limiting.
If we design for an output current level that is 10%-20% higher than the current limiting level we choose (to keep operating temperatures down), can we operate safely for extended periods (perhaps several minutes) while current limiting? I guess the question boils down to...can the LM5119 can be used as a battery/ultracapacitor charger?
If yes, does output ripple increase during limiting, requiring additional output capacitance? Is the max or min duty cycle percentage affected?
We looked at TI's battery charging solutions but none supported our 16-60Vin, 14Vout @ 1-30A requirements.
Thank you!