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VND7004AY Folha de dados(PDF) 30 Page - STMicroelectronics

Nome de Peças VND7004AY
Descrição Electrónicos  Double channel high-side driver with MultiSense analog feedback for automotive applications
PDF  47 Pages
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Fabricante Electrônico  STMICROELECTRONICS [STMicroelectronics]
Página de início  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

VND7004AY Folha de dados(HTML) 30 Page - STMicroelectronics

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DocID027772 Rev 9
4.4.1
Principle of Multisense signal generation
Figure 35: MultiSense block diagram
Current monitor
When current mode is selected via MultiSense, this output is capable of providing:
Current mirror proportional to the load current in normal operation, delivering current
proportional to the load according to a 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.
Normal operation (channel ON, no fault, SEn active)
While device is operating in normal conditions (no fault intervention), VSENSE calculation can
be done using simple equations
Current provided by MultiSense output: ISENSE = IOUT/K
Voltage on RSENSE: VSENSE = RSENSE · ISENSE = RSENSE · IOUT/K



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