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TMS320F28069M: TMDSHVMTRINSPIN development kit : DC-Bus link capacitance

Geon Kim
Expert 1070 points
Part Number: TMS320F28069M
Other Parts Discussed in Thread: TMDSHVMTRINSPIN

Hello,

We purchased two sets of the TMDSHVMTRINSPIN development kit a few years ago.

I have a question on its power circuit.

Specifically it is on the DC-Bus link capacitance.

The capacitor array for the DC-bus link is composed of five electrolytic capacitors of C6, C7, C8, C19 and C20.

The capacitance of each capacitor is 330uF; therefore the total capacitance for the DC-Bus link is 1650uF.

I need to know how the capacitance of 1650uF has been obtained.

Additionally it would be very helpful if you inform me some application note which is related with issue.

Thank you for your guidance.

With regards,

G. Kim

  • 0
    TI__Guru** 115500 points

    The value is not critical, you may use multi capacitors to get a similar value, or use a single capacitor which is close to the value. And the value should be calculated according to the input voltage and frequency of the AC power, load current... You may easily search such papers about this hardware design topic from the website, we don't have such application notes from motor control side.