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AN2344 Datasheet(PDF) 3 Page - STMicroelectronics

Part # AN2344
Description  Power MOSFET avalanche characteristics and ratings
PDF  27 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN2344 Datasheet(HTML) 3 Page - STMicroelectronics

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AN2344
List of figures
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List of figures
Figure 1.
MOSFET vertical structure and parasitic elements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Figure 2.
UIS reference diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 3.
Typical UIS waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 4.
Constant current avalanche fixture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 5.
Disconnected supply UIS fixture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 6.
EAS vs temperature STP9NK80Z . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Figure 7.
Triangular pulse thermal response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 8.
BVDSS vs ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 9.
VDS/ID shapes with the Coil during the UIS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 10.
Modeling triangular pulses using rectangular pulses example . . . . . . . . . . . . . . . . . . . . . . 16
Figure 11.
Triangular-to-rectangular pulse superimposition principle application . . . . . . . . . . . . . . . . 16
Figure 12.
Thermal response comparison . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 13.
Steady-state STP11NM60FP switching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 14.
STP11NM60FP switch-OFF details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 15.
STP11NM60FP switch-ON details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 16.
Normalized STP11NM60FP impedante . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 17.
STP11NM60FP rectangular pulse switching approximation. . . . . . . . . . . . . . . . . . . . . . . . 21
Figure 18.
STP11NM60FP rectangular pulse superimposition principle graph . . . . . . . . . . . . . . . . . . 22
Figure 19.
Equally spaced, same amplitude pulse train timing diagram . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 20.
Rectangular approximation of ramp curve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Figure 21.
Rectangular approximation of triangular curve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Figure 22.
Rectangular approximation of parabolic curve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24



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