11
Recommendations and suggestions
•
The BOM list is not provided with a bulk capacitor already inserted in the PCB. However, the necessary
space has been included (C1). In order to obtain a stable supply voltage, according to the application
conditions and current ripple requirements, it's advisable to use an adequate bulk capacitor. For general
motor control applications, an electrolytic capacitor of at least 100 μF is suggested
•
Similary, the PCB does not come with an heat sink, it can be placed above the IPM on the back of the PCB
with thermal conductive foil and screws. Heat sink R
TH
value is an important factor for good thermal
performance and depends on certain factors such as current phase, switching frequency, power factor and
ambient temperature. For an adequate heat sink dimensioning, it is suggest to use ST PowerStudio software
(STSW-POWERSTUDIO), available on www.st.com.
•
The board re5 V and +3.3 V to be supplied externally through the 34-pin motor control connector J2.
Please refer to the relevant board manuals for information on key connections and supplies.
UM2702
Recommendations and suggestions
UM2702
-
Rev 1
page 28/34