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UM0324 Datasheet(PDF) 48 Page - STMicroelectronics

Part # UM0324
Description  This user manual describes
PDF  105 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

UM0324 Datasheet(HTML) 48 Page - STMicroelectronics

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Figure 29.
DT+TN+TS < Low side Phase A duty cycle < DT+TN+2TS+TH+TDMA and
ΔDutyA-B>DT+TN+TS
Case 3: Phase A pulse width < DT+TN+TS
In this case, the duty cycle applied to Phase A is so short that no current sampling can be
performed in between the two low side commutations.
Then if the difference of duty cycles between Phase B and A is long enough to allow two A/D
conversions to be performed between Phase B low side switch on and Phase A high side
switch off, the strategy shown in Figure 31 is used.
Figure 30.
Low side duty cycle Phase A < DT+TN+TS and
ΔDutyA-B > DT+TN+2TS+TH+TDMA



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