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L6711TR bảng dữ liệu(PDF) 21 Page - STMicroelectronics

tên linh kiện L6711TR
Giải thích chi tiết về linh kiện  3 Phase controller with dynamic VID and selectable DACs
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
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L6711TR bảng dữ liệu(HTML) 21 Page - STMicroelectronics

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L6711
Current reading and current sharing control loop
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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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