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L9945TR 数据表(PDF) 29 Page - STMicroelectronics

部件名 L9945TR
功能描述  Automotive fully configurable 8-channel High/Low side MOSFET pre-driver suitable for 12 V and 24 V systems
PDF  151 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

L9945TR 数据表(HTML) 29 Page - STMicroelectronics

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Table 17. Truth table
HiZ
DIR
NPWM
HBx_AFW
Q1
Q2
Q3
Q4
Load’s driving direction
0
0
0
X (1)
OFF
ON
ON
OFF
Reverse
0
0
1
0
OFF
OFF
ON
OFF
Freewheeling (reverse)
0
0
1
1
OFF
OFF
ON
ON
Active freewheeling (reverse)
0
1
0
X
ON
OFF
OFF
ON
Forward
0
1
1
0
OFF
OFF
OFF
ON
Freewheeling (forward)
0
1
1
1
OFF
OFF
ON
ON
Active freewheeling (forward)
1
X
X
X
OFF
OFF
OFF
OFF
High Impedance
1. X = don't care.
The freewheeling is performed on low side, as shown in Figure 15. Software brake mode can be performed by
setting the active freewheeling bit (HBx_AFW).
L9945
H-Bridge
DS12275 - Rev 8
page 29/151



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