MP2642 Datasheet | Monolithic Power Systems

DESCRIPTION The MP2642 is a highly integrated, bidirectional active balancer that provides up to 1A of charge redistribution among Li-ion, Li-polymer, or lithium iron phosphate batteries in a two-series battery pack. As an alternative to dissipating energy with passive balancing, the MP2642 efficiently moves charge between cells to minimize balancing time and heat generation. The device can also pensate for cell capacity mismatch to extend battery runtime. By bining multiple MP2642 devices, active balancing can be scaled to any number of series cells, and charge can be redistributed to and from any cells within the pack. The MP2642 can balance adjacent cells using two modes: buck-balance mode and boostbalance mode. In buck-balance mode, the MP2642 transfers energy from the upper cell (CU) to the lower cell (CL). In boost-balance mode, the MP2642 transfers energy from CL to CU. To guarantee safe operation, the MP2642 provides CL and CU over-voltage protection (OVP), under-voltage protection (UVP), and thermal shutdown. The MP2642 is available in a QFN-26 (4mmx4mm) package. Integrated, 1A, Bidirectional Active Balancer FEATURES - Wide Operating Voltage Range patible with Li Fe PO4 Batteries: o 2.4V Minimum Cell Voltage o 4.35V Maximum Cell Voltage - Low Quiescent Current (IQ): o CU Pin IQ: Below 15μA o CL Pin IQ: Below 0.1μA - Buck-Balance Mode: o Net Transfer Current to Lower Cell (CL) o Configurable between 0.5A and 1A - Boost-Balance Mode: o Net Transfer Current to Upper Cell (CU) o Configurable between 0.5A and 1A - Protections: o Thermal Shutdown o Internal CL Port Battery Reverse Leakage Blocking o Integrated CU Low Voltage Protection in Boost-Balance Mode - Directly Powered from the Battery Cells - Interleavable for Transfer across Many Cells - Available in a QFN-26 (4mmx4mm) Package APPLICATIONS - Grid-Level Energy Storage Systems (ESS) - Residential ESS - Battery Backup Systems - Material Handling Equipment All MPS parts are lead-free, halogen-free,...