QFAB schematic with DC/DC (how to connect vcc properly)

[prabhudurai]

Hello everyone

i am using QFAB/DCconcverter reference layout to design my prototype, using the 3V coin cell battery as a power source .my question is in the reference layout they have mentioned VDD/AVDD pins are directly connected to VCC does it means i have to connect the poqstive terminal of the battery to VDD/AVDD pins directly ?please i request somebody to clarify my doubt

[Øyvind Karlsen]

Hi,

Connect your positive battery pole to VCC and the negative to VSS(GND). There is an internal connection between VDD and the DC/DC, the DC/DC should power AVDD through an external LC-filter, as shown in the reference schematic.

Best regards,

Øyvind