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雙極性晶體管

二極管

ESD保護、TVS、濾波和信號調節(jié)ESD保護

MOSFET

氮化鎵場效應晶體管(GaN FET)

絕緣柵雙極晶體管(IGBTs)

模擬和邏輯IC

汽車應用認證產(chǎn)品(AEC-Q100/Q101)

48 V Battery Management System (BMS)

48 V batteries tend to be created using Li-ion multi-cell battery packs using 8-16 cells. From a safety perspective, but also to ensure the best efficiency and longest battery life these battery packs need to be carefully monitored and controlled. This requires accurate voltage, temperature and current as well as battery state of charge (SoC) and state of health (SoH) monitoring. In addition for most efficient battery use, good cell balancing and battery optimization is a must.

car-blueprint-multiple-highlights
  • 框圖
  • Design considerations
  • Product listing
  • Videos
  • 支持

框圖

V ccA V ccB B uc k c o n v e r t e r D C / D C f o r M C U c o r e s u pp l y charge balancing M O SFE T s cell 1 cell 2 24/36/48 V multi-cell bat t e r y cell n BMS IC aaa-035590 C A N- F D b u s S en s o r s ( d i gi t a l ) P T C h e a t e r 5 V L D O 3 . 3 V < 1 . 8 V A i r / W a t e r c o olin g Sensors(analog) Highlighted components are Nexperia focus products.

Charge balancing MOSFETs

推薦產(chǎn)品 (1)

Zener diodes

推薦產(chǎn)品 (1)

TVS diodes

推薦產(chǎn)品 (1)

e-fuse / regulation

推薦產(chǎn)品 (1)

Autosense translators

推薦產(chǎn)品 (1)

Analog switch

推薦產(chǎn)品 (1)

ESD protection

推薦產(chǎn)品 (1)

Buck converter

Related sub-systems (1)

MCU core supply

Related sub-systems (1)

選擇元件

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Design considerations

  • Depending on the current being drawn some systems can use internal cell balancing topologies, but where there is a higher current then external MOSFETs are recommended.
  • Engineers also have a choice between passive and active cell balancing, although active cell balancing is often more complex give, its need for charge storage elements
  • Zener diodes utilized in the cell balancing stage protect the FETs and battery cell

Product listing

Charge balancing MOSFETs

TVS diodes

Autosense translators

Analog switch

Buck converter

LFPAK88: The automotive Power MOSFET driving power density to the next level

Providing a true alternative to D²PAK, Nexperia’s LFPAK88 delivers industry leading power density in truly innovative 8mm x 8mm footprint.

支持

Design handbooks

Boards

Documentation and videos