MCT8315A: MCT8315A Custom PCB - I2C not responding - Target ID : 0x00

Aldrin Rebellow

Part Number: MCT8315A

Tool/software:

Hello Team,

We have made a custom pcb with STM32 MCU and TI's MCT8315A BLDC driver. unfortunately MCT8315 is not detecting over I2C channel with Target ID : 0x00. I have verified I2C channel by interfacing another eeprom and it works fine.

Please find the array which i used to send over I2C:

 static uint8_t arrbuff[] = {0x10 , 0x00 , 0xE6 , 0xCD ,
 0x00 , 0x80 , 0x00 , 0x00};

Please find the attached schematics for your reference and review.

Please look and guide me to fix this.

Aldrin Rebellow

9 months ago

0 Venkatadri Shantaram84961 9 months ago

TI__Mastermind 24052 points

Hi ,

I am OOO until 19th, we will try to answer by 20th.

Just to confirm if device is not in sleep, can try enabling speed pin high and test?

Also, verify databsheet for byte endean order ?

Thanks and Best Regards

Venkatadri S

0 Venkatadri Shantaram84961 9 months ago in reply to Venkatadri Shantaram84961

TI__Mastermind 24052 points

Hi,

I looked at the schematic, if buck is not populated FB_Bk should be tied to AVDD. Otherwise digital will not power up.

Thanks and Best Regards

Venkatadri S

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MCT8315A: MCT8315A Custom PCB - I2C not responding - Target ID : 0x00