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AN1625 Fiches technique(PDF) 21 Page - STMicroelectronics

No de pièce AN1625
Description  L6235 THREE PHASE BRUSHLESS DC MOTOR DRIVER
PDF  39 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN1625 Fiches technique(HTML) 21 Page - STMicroelectronics

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AN1625 APPLICATION NOTE
Figure 21. Maximum output current vs. selectable devices.
2.13.2 Power Dissipation Formulae
Figure 22 to Figure 25 are screenshots of a spreadsheet that helps calculating power dissipation in specified
conditions (application and motor data), and estimates the resulting junction temperature for a given package
and copper area available on the PCB [3].
The model considers power dissipation during the on-time and the off-time, taking into account the selected de-
cay, rise and fall time (when a phase change occurs), the switching losses and the quiescent current power dis-
sipation.
0.50
0.70
0.90
1.10
1.30
1.50
1.70
1.90
2.10
2.30
Load Current
[A]



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