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AN3338 Datasheet(PDF) 52 Page - STMicroelectronics

No. de pieza AN3338
Descripción Electrónicos  In recent years the variable speed motor control market has required high performance
PDF  72 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN3338 Datasheet(HTML) 52 Page - STMicroelectronics

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AN3338
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Doc ID 18441 Rev 4
Positive DC-link
Pin: P
•
These are three DC-link positive power supply pins of the inverter, which offer
designers more flexibility in their approach. They are internally connected to the
collectors of the high-side IGBTs.
•
To suppress the surge voltage caused by the DC-link wiring or PCB pattern inductance,
connect decoupling capacitors close to
this pin and power ground (typically, high
frequency, high voltage, non-inductive capacitors of about 0.1 or 0.22
μF are used).
Negative DC-link
Pins: NU, NV, NW
•
These are the DC-link negative power supply pins (power ground) of the inverter.
•
These pins are connected to the low side IGBT emitters of each phase.
•
The power ground of the application should be separated from the logic ground of the
system and they should be reconnected at one specific point (star connection).
Inverter power output
Pins: U, V, W
•
Inverter output pins for connecting to the inverter load (e.g. motor).



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