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VND7004AY датащи(PDF) 30 Page - STMicroelectronics |
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VND7004AY датащи(HTML) 30 Page - STMicroelectronics |
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30 / 47 page ![]() 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 |
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