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VN7140AS12 Datasheet(PDF) 25 Page - STMicroelectronics

Part # VN7140AS12
Description  High-side driver with Multisense analog feedback for automotive applications
PDF  39 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

VN7140AS12 Datasheet(HTML) 25 Page - STMicroelectronics

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VN7140AS12
Application information
DocID029756 Rev 2
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4.4.1
Principle of Multisense signal generation
Figure 33: Multisense block diagram
Current sense
The Multisense output is capable of providing:
Current mirror proportional to the load current in normal operation, delivering current
proportional to the load according to known ratio named K
Diagnostics flag in fault conditions delivering fixed voltage VSENSEH
The current delivered by the current sense circuit, ISENSE, can be easily converted to a
voltage VSENSE by using an external sense resistor, RSENSE, allowing continuous load
monitoring and abnormal condition detection.
INPUT
Vcc
OUT
To uC ADC
RPROT
RSENSE
Main MOS
Sense MOS
Fault
CS
Current sense Switch Block
Current sense



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