VN7007ALH datasheet(23/37 Pages) STMICROELECTRONICS

Il numero della parte	VN7007ALH

Spiegazioni elettronici	High-side driver with CurrentSense analog feedback

PDF	37 Pages

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Produttore elettronici	STMICROELECTRONICS [STMicroelectronics]

Homepage	http://www.st.com

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VN7007ALH

Application information

4.4.1

Principle of CurrentSense signal generation

Figure 29: CurrentSense block diagram

Current sense

This output is capable to provide:

•

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.

Normal operation (channel ON, no fault)

While device is operating in normal conditions (no fault intervention), VSENSE calculation can

be done using simple equations

Current provided by CurrentSense output: ISENSE = IOUT/K

Voltage on RSENSE: VSENSE = RSENSE

∙ ISENSE = RSENSE ∙ IOUT/K

DocID027958 Rev 1

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