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L6711TR データシート(PDF) 21 Page - STMicroelectronics

部品番号 L6711TR
部品情報  3 Phase controller with dynamic VID and selectable DACs
PDF  50 Pages
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メーカー  STMICROELECTRONICS [STMicroelectronics]
ホームページ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L6711TR データシート(HTML) 21 Page - STMicroelectronics

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L6711
Current reading and current sharing control loop
21/50
current information of each phase, information about the total current delivered (IDROOP =
IINFO1 +IINFO2 + IINFO3) and the average current for each phase (IAVG = (IINFO1 + IINFO2 +
IINFO3)/3) is taken. IINFOX is then compared to IAVG to give the correction to the PWM output
in order to equalize the current carried by the three phases.
Since Rg is designed considering the OC protection, to allow further flexibility in the system
design, the resistor in series to CSx+ can be split in two resistors as shown in Figure 7.
Figure 7.
Inductor current sense
Design Equations:
R
gRC
()
L
R
L
C
g
⋅
------------------
=
R
gRC
()
R
ga
()
+
Rg
=



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