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™
PROFET
+2 12V Arduino Shield
2 Board description
2.5.3
Battery voltage monitoring
The battery voltage can be measured with the board (voltage divider/analogue pin). The PROFET
BTS700x-1EPP Arduino Shield provides the possibility to measure and monitor the V
Voltage V
: max. = 28 V).
s
The voltage divider for V
doesn't get more than 5 V. Furthermore the zener diode D5 is protecting the V
microcontroller against overvoltage. The ADC (analog/digital converter) inputs can get damaged by signals
exceeding the input range specified in the electrical parameters. The inputs need to be protected all the time
(during powered up as well as powered down state) to avoid damaging the ADC. The TVS diode D1 is limiting
the power supply voltage for the PROFET
Figure 9
Voltage divider for V
2.5.4
Supply options
If jumper J1 is connected, the microcontroller board is powered by BAT+. Otherwise, the user has always to
connect the USB port to the microcontroller to supply the device. In case the user is employing the option of the
connected jumper J1, then it has to be ensured that the installed LDO (voltage regulator) on the used
microcontroller board (e.g. Arduino Uno, Aurix shield buddy, XMC
to withstand a maximum of 28 V.
User Manual
monitoring ensures that the analog input pin of the microcontroller (e.g. XMC1100
bat
™
+2 devices and protect our PROFET
monitoring
bat
bat
™
s from voltage transients.
™
1100 boot kit, XMC
15
™
+2
voltage (Power Supply
bat
input pin (A2) of the
™
4700 Relax Kit ...) is able
2019-10-23
™
)
Rev. 1.00
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