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UM0527 Datasheet(PDF) 29 Page - STMicroelectronics

Part # UM0527
Description  UPS evaluation board
PDF  66 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

UM0527 Datasheet(HTML) 29 Page - STMicroelectronics

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UM0527
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Figure 12.
Main flowchart
1.2.5
ADC
The ADC thread measures values as described below:
●
Mains voltage - the voltage measured at INP_LEV is needed for calculating the
following values:
–
RMS - true RMS main voltage which determines the working mode of the UPS:
mains mode, buck mode, boost mode or inverter mode. This value is calculated for
one period of input voltage.
–
SAMPLE - actual sample voltage which is the value needed for calculating RMS.
Additionally this value is needed to compare with the predicted value of the mains



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