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AN280 Datasheet(PDF) 3 Page - STMicroelectronics

Part # AN280
Description  Controlling voltage transients in full-bridge driver applications
PDF  15 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN280 Datasheet(HTML) 3 Page - STMicroelectronics

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AN280
List of figures
Doc ID 1703 Rev 3
3/15
List of figures
Figure 1.
DC motor drive circuit using the L6203. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Figure 2.
Output switching waveform for the L6203 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Figure 3.
Parasitic wiring inductances in DC motor drive circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 4.
Enable input and motor current for examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 5.
Supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 6.
V01 - V02 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 7.
Supply voltage with 0.2 µF bypass capacitor on supply pin . . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 8.
V01 - V02 with 0.2 µF bypass capacitor on supply pin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 9.
RC snubber circuit on output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 10.
Supply voltage with snubber . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 11.
V01 - V02 with snubber . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 12.
Turn-on 2.0 A/div . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Figure 13.
Turn-off 2.0 A/div . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12



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