VND7004AY datasheet(30/47 Pages) STMICROELECTRONICS

Part #	VND7004AY

Description	Double channel high-side driver with MultiSense analog feedback for automotive applications

PDF	47 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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Application information

VND7004AY

30/47

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

VND7004AY Datasheet(PDF) 30 Page - STMicroelectronics