AN4043 datasheet(41/60 Pages) STMICROELECTRONICS

Part #	AN4043

Description	In recent years the variable speed motor control market has required high performance

PDF	60 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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41 / 60 page

AN4043

Package

Doc ID 022726 Rev 2

41/60

Positive DC-link

Pin: P

●

This is a DC-link positive power supply pin of the inverter and it is 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 a smoothing filter capacitor close to the P pin. Generally a 0.1 or 0.22 µF high

frequency, high voltage non-inductive capacitor is recommended.

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).

AN4043 Datasheet(PDF) 41 Page - STMicroelectronics