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UM0877
3.5.1
Power supply
Figure 13. STEVAL-ISF002V1 - power supply section
The mains has to be provided by pins 1 and 3 of the J7 connector (pin 2 can be linked up to
earth). The voltage input range must be within 185 ÷ 265 Vrms at 50 Hz.
The digital section is provided by means of a circuit based on the VIPER12 to obtain 15 Vdc
and a positive voltage regulator L7805 to obtain 5 Vdc.
The VIPER12 can be left out by removing J9. In this case, 15 Vdc have to be provided on
J10 (positive on pin 1).
www.BDTIC.com/ST
STEVAL-ISF002V1 hardware description
Doc ID 16854 Rev 1
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