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雙極性晶體管

二極管

ESD保護(hù)、TVS、濾波和信號(hào)調(diào)節(jié)ESD保護(hù)

MOSFET

氮化鎵場(chǎng)效應(yīng)晶體管(GaN FET)

絕緣柵雙極晶體管(IGBTs)

模擬和邏輯IC

汽車(chē)應(yīng)用認(rèn)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

Zener diodes

TVS diodes

e-fuse / regulation

Autosense translators

Analog switch

ESD protection

Buck converter

MCU core supply

選擇元件

想要查看本應(yīng)用中,所使用的 Nexperia 元件的更多信息,請(qǐng)選擇上面的元件或單擊框圖中的元件(藍(lán)色突出顯示的部分)。

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.

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