Automotive ASFETs for Repetitive Avalanche

Guaranteed repetitive avalanche performance, automotive qualified

When using MOSFETs to power inductive loads such as driving solenoids, most circuit designs include additional components to protect the MOSFET when the load current continues to flow during switch off. This can range from highly efficient but expensive boost topologies that reuse the energy, to the less efficient but more cost-effective approach of using a freewheeling diode. The simple alternative option of a repetitive avalanche set-up has historically only been possible using planar technology. By optimizing MOSFETs to comfortably handle repetitive avalanche currents while maintaining a junction temperature below 175 °C, Nexperia offers a truly rugged device that delivers numerous system level savings.

ASFETs for Repetitive Avalanche

ASFETs for Repetitive Avalanche are designed to meet the needs of a range of automotive and inductive loads:

  • Qualified to AEC-Q101
  • Guaranteed repetitive avalanche performance, tested up to 1 billion cycles
  • Rugged silicon technology combined with thermal performance of LFPAK, ensures die temperature stays below 175 °C
  • Simplicity of using a single MOSFET reduces BOM and circuit complexity, delivering system cost and space savings
  • Modern trench alternative to older planar technologies 
  • Offers increased efficiency and faster switching in comparison to freewheeling diode approach 

 

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Products

Type number Description Status Quick access
BUK9K13-60RA Dual N-channel 60 V, 12.5 mOhm logic level MOSFET in LFPAK56D using Repetitive Avalanche technology Production
BUK9K25-40RA Dual N-channel 40 V, 29 mOhm logic level MOSFET in LFPAK56D using Repetitive Avalanche technology Production
BUK9K35-60RA Dual N-channel 60 V, 35 mOhm logic level MOSFET in LFPAK56D using Repetitive Avalanche technology Production
BUK9K52-60RA Dual N-channel 60 V, 55 mOhm logic level MOSFET in LFPAK56D using Repetitive Avalanche technology Production
Visit our documentation center for all documentation

Application note (2)

File name Title Type Date
AN50003 Driving solenoids in automotive applications Application note 2020-12-04
AN10273 Power MOSFET single-shot and repetitive avalanche ruggedness rating Application note 2020-07-02

Design support (1)

File name Title Type Date
SOT1205 3D model for products with SOT1205 package Design support 2017-06-30

Selection guide (1)

File name Title Type Date
Nexperia_Selection_guide_2021 Nexperia Selection Guide 2021 Selection guide 2021-01-08

SPICE model (4)

File name Title Type Date
BUK9K52-60RA BUK9K52-60RA SPICE model SPICE model 2020-12-04
BUK9K35-60RA BUK9K35-60RA SPICE model SPICE model 2020-12-04
BUK9K25-40RA BUK9K25-40RA SPICE model SPICE model 2020-12-04
BUK9K13-60RA BUK9K13-60RA SPICE model SPICE model 2020-12-04

Thermal model (4)

File name Title Type Date
BUK9K52-60RA_Zth BUK9K52-60RA thermal model Thermal model 2020-12-04
BUK9K35-60RA_Zth BUK9K35-60RA thermal model Thermal model 2020-12-04
BUK9K25-40RA_Zth BUK9K25-40RA thermal model Thermal model 2020-12-04
BUK9K13-60RA_Zth BUK9K13-60RA thermal model Thermal model 2020-12-04

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