Power supplay requierments for NRF52832

RE: Power supplay requierments for NRF52832

Øyvind Karlsen — Tue, 12 Jul 2016 10:35:38 GMT

Discharge rate depends on the state of the chip. In system off the device consumes very little current and the discharge time will be long.

RE: Power supplay requierments for NRF52832

ahia — Tue, 12 Jul 2016 09:59:21 GMT

hi Øyvind

thanks for your answer
what do you mean by "Vcc capacitor should be discharged" , is it when turning off the chip? what is the discharge rate ?

thanks ahia 3.

RE: Power supplay requierments for NRF52832

Øyvind Karlsen — Tue, 12 Jul 2016 09:02:14 GMT

Hi,

The max continous current is when the radio is transmitting and the CPU is running alongside a slew of peripherals, for calculation use a value on order of 14-20 mA depending on how many peripherals you want to run. This is also the peak current.

Ripple should be below 100 mV pk-pk.

Load regulation, rise and fall time is determined by the power on reset module, electrical speficication here. Make sure to power different parts of your PCB through a star node, and add a sizeable capacitor there to prevent voltage drops.

Vcc capacitor should be discharged.

Best regards,

Øyvind