Dear c2000 expert,
I'd like to have a 1Mhz I2C speed with using 280049, here I see a pmbus interface could works at 1MHZ, but it needs to config it as i2c mode, and with input frequency of 20MHZ. My question how to config the input frequency to 20MHZ? Where the 20MHZ frequency comes from?
Hi Manoj,
Thanks for your great support.
In my application, I need to sample some of isolated signal(eg. vout), and this signal will be used as feedback signal for voltage loop control.
I have considered with using isolation amplifier before, but gave up because of the room and space limitation on my hardware board. Then l choose to use external ADC and isolator, and the package size of sum of external adc and isolator is smaller than an isolation amplifier.
Please see below hardware structure of sampling the vout signal, I have find a external adc with i2c interface, from my application, it requires i2c support run at 1Mhz to get the signals for having better performance of voltage loop.
Can you please share your comments on this? Thanks...
Jack,
If you replace external ADC which supports SPI you should be able to achieve what you want pretty easily. Will you be able to switch external ADC which supports SPI?
Regards,
Manoj
