DRV8353RS-EVM: DRV8353 indicates fault GDUV

NICK LIN

Part Number: DRV8353RS-EVM
Other Parts Discussed in Thread: DRV8353

Hi,

I use launchpad_F28069M to work with DRV8353RS_EVM. The codes were modified based on this one: https://e2e.ti.com/cfs-file/__key/communityserver-discussions-components-files/171/0042.sw_5F00_drv8353.zip from F2802X to F2806X

With iso-F28027F (the board shipped with drv8353), Motor identified and spun well. Then I changed the control board to F28069M, The motor also recognized, But after a while, the fault led was on. GDUV = 1. Reboot board has no use to this fault indication.

Idrive settings are:

gDrvSpi8353Vars.Ctrl_Reg_03.IDRIVEN_HS = ISink_HS_0p300_A;
gDrvSpi8353Vars.Ctrl_Reg_03.IDRIVEP_HS = ISour_HS_0p300_A;
gDrvSpi8353Vars.Ctrl_Reg_04.IDRIVEN_LS = ISink_LS_0p300_A;
gDrvSpi8353Vars.Ctrl_Reg_04.IDRIVEP_LS = ISour_LS_0p300_A;

Are they too high for DRV8353_EVM? Should I change them to 100_A/050_A/100_A/050_A ? Does the chip drv8353RS broken and must be replaced? Why no fault indication happened while work with iso-F28027F?

The motor is 48V/18A(peak current 45A), 5 pole pairs, 3000RPM.

Thanks

over 5 years ago

0 Adam Sidelsky over 5 years ago

TI__Guru 65190 points

Nick,

It is hard to comment what happened because the board and code has been changed. Are you connecting the F28069M directly to the EVM pins or using wires?

This type of fault usually indicates IDRIVE was set too high, maybe somewhere in your development the IDRIVE was used at a higher value? As a reminder IDRIVE must be programmed every time because the default IDRIVE is set to maximum which may damage the DRV.

Please replace the DRV and use the lowest IDRIVE as you mentioned.

Regards,

-Adam

0 NICK LIN over 5 years ago in reply to Adam Sidelsky

Intellectual 270 points

Hi Adam,

Thanks for your reply.

I connect two boards directly using a male to male connector. Hal.c is copied from this code https://e2e.ti.com/cfs-file/__key/communityserver-discussions-components-files/171/boostxldrv8323_5F00_package_5F00_mw.zip. And just modified the driver from 8323 to 8353.

The original codes about IDRIVE in DRV8353RS for IOS-F28027F are

Still too high for this EVM?

Thanks

0 Adam Sidelsky over 5 years ago in reply to NICK LIN

TI__Guru 65190 points

Nick,

Yes, we recommend the minimum settings for all IDRIVEP and IDRIVEN.

Regards,

-Adam

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DRV8353RS-EVM: DRV8353 indicates fault GDUV