JAJSUV0 June 2024 LM5171
PRODUCTION DATA
LM5171 is suitable for the bidirectional DC-DC converters for dual battery systems, and battery backup systems. It can also create stackable, high power, unidirectional buck or boost converters with balanced current sharing among multiphases.
LM5171 uses average current mode control which is a two-loop system. LM5171 integrates two operational amplifiers to achieve HV voltage regulation and LV voltage regulation. Please note only one operational amplifier is enabled according to DIR1. External operational amplifiers may be necessary for CH-2 in case of independent operation. The interface signals between the inner current loop and outer voltage loop are basically the DIR and ISET signals, of which the DIR signal controls the current direction, and the ISET signal carries the error information of the outer voltage loop.