Intel® Makers
Intel® Edison, Intel® Joule™, Intel® Curie™, Intel® Galileo
Announcements
Welcome - This is a Peer-to-Peer Forum only. Intel has discontinued these products but you may find support from other customers on this Forum
9872 Discussions

Can Curie be powered by 3.7v battery directly?

idata
Community Manager
916 Views

I have found that the range of VSYS is 1.9V~4.4V and I want to set 3.3V as Curie's main power. Does it mean that I can power Curie with 3.7v Li battery directly and not need a LDO chip to transform 3.7V to 3.3V?

0 Kudos
7 Replies
idata
Community Manager
68 Views

Hi liuzhu,

Thanks for your interest in the Intel Curie Platform.

I have checked the datasheet for the Intel Curie Module and it states that it only works with 3.3 V or 1.8V interfaces. Please see Section 4 of this datasheet: https://software.intel.com/en-us/articles/intel-curie-module-datasheet Intel® Curie™ Module Datasheet | Intel® Software .

Could you be so kind to provide me the link where you find this information?

I will be waiting for your reply, have a nice day!

Best Regards,

 

-Jose.
idata
Community Manager
68 Views

Hi Jose,

I have found the information from Table 3-1 of this datasheet: https://software.intel.com/en-us/articles/intel-curie-module-datasheet Intel® Curie™ Module Datasheet | Intel® Software .

And from Figure 5 of https://software.intel.com/en-us/articles/intel-curie-module-design-guide Intel® Curie™ Module Design Guide ,it seems like I can connect VBATT to pin VSYS as main power of Curie and there is no need to transform 3.7V of the battery to 3.3V.

Am I right?

Bset Regards.

idata
Community Manager
68 Views

 

Hi liuzhu,

 

 

Seems like you are right! Reading again Section 4, it is talking about internal voltage regulators. I apologize for the misunderstanding.

 

 

Thanks for providing the right information!

 

 

Have a nice day!

 

 

Best Regards,

 

-Jose.
idata
Community Manager
68 Views

Hi Jose,

I have another question and need your help. If VSYS is not powered, is it possible to power Curie by USB_3P3?

Thank you !

idata
Community Manager
68 Views

Hi liuzhu,

 

 

The USB_3P3 is a dedicated LDO for the USB, if you power the Curie by using the VDD_USB you should be fine. Since the Curie is intended to be supplied by direct USB power, a charging device or a battery.

 

 

Hope you find this information useful, have a nice day!

 

 

Best Regards,

 

-Jose.
idata
Community Manager
68 Views

Hi Jose,

I want to confirm the message you send. If I leave ball L4(VSYS) floating and at the same time ball K4(VDD_USB) is connected to USB power, the chip could still work well and every function is normal?

Best Regards,

idata
Community Manager
68 Views

Hi liuzhu,

 

 

Yes that is right!

 

 

Have a nice day!

 

 

Best Regards,

 

-Jose.
Reply