IWRL6432: IWRL6432 ref design with 1.8V/1.2V power supply.

Hi Daniel, 

Thanks for your inquiry. No, we don't have a IWRL6432 reference design utilizing the 1.8V/1.2V power supply topology.

However, you can use the reference page 5 of the IWRL6432BOOST schematic and design files and pages 19-21 of the IWRL6432 Datasheet starting place. The EVM uses the 3.3V/1.8V/1.2V topology and steps down 5V into the needed rails. However, in your case, you would simply use the 1.8V/1.2V converters. Just make sure to route the power to the appropriate IOs listed in Table 8.3 of the datasheet. No matter what power topology or DC/DCs or LDOs you use, please take care to ensure the noise and ripple specifications laid out in Table 8.5 of the datasheet are met. 

As long as you use the correct IO voltage on the flash, there should be no other external modifications needed. There may be some code changes that are required if you are using the ES1.0 silicon version of IWRL6432. 

Please see this thread: https://e2e.ti.com/support/sensors-group/sensors/f/sensors-forum/1238746/iwrl6432-flashing-device