TPS55289EVM: driving code for reference?

Hi Depeng,

To configure the TPS55289:

1. Configure the register 00h and 01h to set the Vref. Configure the register 04h Feedback selection to select the feedback ratio. The Vout = REF/Feedback ratio.

2. Set the OE bit in register 06h to 1 to enable the switching. The Vout rises to setting value.

You could also configure other registers value per datasheet. Let me know if you further questions.

Hello ,

Good day,

I have another question. Does 0x07 register need to be configured? Can I output voltage without configuration?

Best Regards

James Man

Hi Depeng,

0x07 register is not needed to be configured.

TPS55289 needs to be configured first so that the device could start swtiching.

If you need a buck-boost converter without I2C configuration, you could take a look at TPS552882. 

Hi Zack，

Is there a programmable (DAC) IC that controls the size of the voltage output,

1. The voltage range is 0.8v-22v or the output range is wider,

2. The output current can reach more than 3a,

3. I2C communication can be used to control multiple outputs

Tps552882 does not meet our needs

Best Regards

James Man

Hello ,

Thank you for your quick reply.

I've conveyed it to my customer.

Have a good day .

James

Hi James,

Thank you for the update. There is no other part recommended.