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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)

Airbag controller with Safing MOSFET

Airbags have been a standard feature in passenger cars for over 20 years. Naturally these systems need to be extremely robust and reliable, regardless of whether it is just a single airbag for the driver and front passenger or a complete multi-stage airbag system offering a range of protection options (front, side, head, rollover and even pedestrian protection). A Safing MOSFET in series with firing circuit transistors provides cost-effective operational reliability, enabling breakage of the current circuit in case of incorrect operation due to malfunction or electrical noise.

  • 框圖
  • Design considerations
  • Product listing
  • 支持

框圖

TVSdiode ESDdiode 25 V to 35 V 15 V to 20 V SafingMOSFET n squibs(n = 4 to 12) 12 V Airbagcontroller CAN/FlexRay BATTERY aaa-034790 DC/DCboostconverterIC Highlighted components are Nexperia focus products.

Transient Voltage Suppressors (TVS)

Reverse battery protection

DC-DC freewheeling

DC-DC boost low side switch

Safing MOSFET

ESD protection

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

  • Traditional solutions to Airbag applications are being withdrawn from the market due to unsustainability
  • Enhanced SOA technology provides similar linear mode performance in a sustainable silicon technology
  • For pulsed linear mode applications, such as the Safing MOSFET in airbags, Nexperia’s ASFETs provide the required robustness while delivering significant board space savings (up to 84% with an LFPAK33 device) compared to traditional DPAK solutions
  • Airbag firing circuits need a stable voltage of 15 to 20 V, requiring a boost converter to step up the standard 12 V battery voltage to 25–35 V

Product listing

Transient Voltage Suppressors (TVS)

Reverse battery protection

DC-DC freewheeling

ESD protection

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