L9960T Enabling Problems

MTrkan · ‎2024-09-25

Hello I am trying to use L9960T IC. I did the default configuration to IC and I can get the diagnosis from the L9960T. However, although the DIS pin is 0, NDIS is 1 and there is PWM in IN1 pin of L9960T Brdige_En register is still zero. I am using Hbridge in normal mode so I am expecting it to be 1 as soon as it sees the rising of the PWM after DIS pin goes to low. Can you help me with this? Also, I am not getting any error in the diagnosis. I am sharing the state registers just to make it more clear.

Thank you!

NicCes · ‎2024-09-26

I guess you have to do the Hardware Self Check (HWSC). Without this, the bridge cannot be enabled and so the motor driving is switched-off.

As soon as the power supply is connected it is necessary to send the SPI frame corresponding HWSC (i.e. 0x 2201) after this, you should see the start of the motor driving.

View solution in original post

NicCes · ‎2024-09-26

I guess you have to do the Hardware Self Check (HWSC). Without this, the bridge cannot be enabled and so the motor driving is switched-off.

As soon as the power supply is connected it is necessary to send the SPI frame corresponding HWSC (i.e. 0x 2201) after this, you should see the start of the motor driving.

MTrkan · ‎2024-09-26

I tried HWSC in this morning and I could see that bridge is enabled. Thanks for the answer and helpfull information.