UCD9090A: GPI1 PWM1 configured as a PWM output

MCM

Part Number: UCD9090A

Hi,

When configuring the UCD9090A GPI1 PWM1 pin 22 as a PWM output, the Fusion Power GUI does not appear to allow change of the frequency, with a default set to 10kHz. The option to change frequency is greyed out. Can you tell me how to enable the option to change frequency?

Thank you.

over 6 years ago

0 yihe over 6 years ago

TI__Guru 65920 points

no, PWM1 is fixed at 10KHz and is not programmable. please use FPWM pins for your desired frequency.
Regards
Yihe

0 MCM over 6 years ago

Prodigy 120 points

Thank you Yihe,
That is not mentioned in the UCD9090A datasheet, right? Or in the Fusion Power GUI user's guide. Is this an errata?
-Valerie

0 yihe over 6 years ago in reply to MCM

TI__Guru 65920 points

This is not a errata. Thanks for the note. we will update the data sheet to address this. This limiation is listed at table 20 of www.ti.com/.../slvu352f.pdf
Regards
Yihe

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UCD9090A: GPI1 PWM1 configured as a PWM output