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雙極性晶體管

二極管

ESD保護、TVS、濾波和信號調(diào)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)

Electronic Fuel Injection

One result of the continuing pressure for ever more fuel-efficient vehicles is a greater use of direct electronic fuel injection (EFI) systems. These injector/valve controller systems help ensure the most efficient air-fuel mix within both diesel and gasoline engines regardless of the running conditions of the vehicle. By connecting the fuel injectors to the engine control unit and various sensors, including exhaust gas temperature (EGT), ensure the appropriate and precise spraying of the atomized fuel.

  • 框圖
  • Design considerations
  • Product listing
  • 支持

框圖

TVSdiode D1 D2 ESDdiode Signalconditioning BATTERY Sensors incl.EGT, O2,etc. Hold - Vbat Vbat Vboost DC-DC boost (50-70 V) aaa-028523 Engine management sensors Pull-in - Vboost A2 A2 A4 drive 1 injector 1 driverecirc drive 2 current monitoring LS1 LS2 shunt LS3 LS4 injector 2 drive 3 injector 3 drive 4 injector 4 CAN/FlexRay Reverse batteryprotection 12 V ECU Highlighted components are Nexperia focus products.

Transient Voltage Suppressors (TVS)

Reverse battery protection

Pull-in transistor

Hold current transistor

Freewheeling diode

Cylinder select transistor

Avalanche diodes

DC-DC boost low side switch

ESD bus protection

DC-DC freewheeling diode

選擇元件

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

Design considerations

  • Controlling coil current is the key to injector fuel accuracy, with ‘pull-in’ requiring large currents while less current is needed to ‘hold’
  • N-channel MOSFETs for switch pull-in, hold current and cylinder select need high current transient robustness
  • Schottky rectifier or PN rectifier for freewheeling and protection of inductive load
  • Ensure adequate suppression and filtering of EMI noise
  • Using 100 V, ultra-low-leakage Schottky technology helps prevent thermal runaway

Product listing

Transient Voltage Suppressors (TVS)

Reverse battery protection

Hold current transistor

DC-DC boost low side switch

ESD bus protection

DC-DC freewheeling diode

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