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L9908 数据表(PDF) 92 Page - STMicroelectronics

部件名 L9908
功能描述  Automotive 3-Phase motor gate driver unit
PDF  152 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

L9908 数据表(HTML) 92 Page - STMicroelectronics

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Figure 66. OFD currents in motor phases
Blanking and filtering
To avoid false error detections during the diagnosis settling time and to increase noise robustness, the OSD
implements a two-step digital filtering: an Up/Down counter of length equal to T_ofd_flt on the comparator`s
output filters out the high frequency noise while a blanking time masks the filters output by a programmable delay
time T_ofd_blank.
Figure 67. OFD enabling and masking time start - IPU example
L9908
Functional description
DS13546 - Rev 5
page 92/152



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