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SaGa_4641021
Level 4
Level 4
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Hi

PSoC63 datasheet (specifically CYBLE-416045-02) states "1.71 V to 3.6 V Operation".

Can I power the PSoC directly from LiPO battery without using a voltage regulator ?

I am only interested in the digital inputs/outputs and not the analogues.

Thanks

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1 Solution

@SaGa_4641021 ,

If you decide to ditch the rechargeable LiPo secondary battery and go with a Lithium metal-oxide primary  battery (non-rechargeable), the battery starts at 3.3V at full charge and can still be used down to 1.7V when significantly discharged.   This battery type can be directly connected to the CYBLE-416045-02.

Good examples of easily available batteries are the CR2032 and the CR2450.

Note:  Since this type of battery is a primary battery and CANNOT BE RECHARGED, the battery can only be replaced when depleted.

Len
"Engineering is an Art. The Art of Compromise."

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6 Replies
Gautami_12
Moderator
Moderator
Moderator
50 likes received 100 solutions authored 250 replies posted

Hi @SaGa_4641021 ,

I believe that this issue is already being discussed in this thread - Can-this-kit-be-operated-directly-from-Li-battery  and Powering-PSoC-63-BLE-dev-kit-using-battery

Please refer to this and let me know if you need further help.

Warm Regards,
Gautami J

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SaGa_4641021
Level 4
Level 4
50 replies posted 100 sign-ins 50 sign-ins

Hi Gautami

Thanks for the reply.

The link you provided is very helpful but it discusses the pioneer eval-kit.

I am asking about using the CYBLE-416045-02 module separately.

Thanks

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@SaGa_4641021 ,

The answers found in the links provided by @Gautami_12 still apply to the CYBLE-416045-02.

The issue is that LiPo batteries at full charge are charged to 4.2V.  Connecting the battery directly to the CYBLE-416045-02 at this voltage would permanently damage it.

Therefore it is recommended to use a LDO vreg to reduce the battery voltage to no more than 3.6V.

Also, many LiPo batteries start having internal damage when the voltage is allowed to drop below 2.0V.  This would significantly limit the overall battery life.

I hope this helps.

Len
"Engineering is an Art. The Art of Compromise."
SaGa_4641021
Level 4
Level 4
50 replies posted 100 sign-ins 50 sign-ins

Hello Len

Thank you for your reply.

Would I also need a boost converter in case I use 3V source ? Or would 3V work directly; as referring to the link shared by Gautami; there is an internal boost circuit in the kit that needs 3.3-4.2V to start the system.

thanks

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@SaGa_4641021 ,

If you decide to ditch the rechargeable LiPo secondary battery and go with a Lithium metal-oxide primary  battery (non-rechargeable), the battery starts at 3.3V at full charge and can still be used down to 1.7V when significantly discharged.   This battery type can be directly connected to the CYBLE-416045-02.

Good examples of easily available batteries are the CR2032 and the CR2450.

Note:  Since this type of battery is a primary battery and CANNOT BE RECHARGED, the battery can only be replaced when depleted.

Len
"Engineering is an Art. The Art of Compromise."
SaGa_4641021
Level 4
Level 4
50 replies posted 100 sign-ins 50 sign-ins

thanks a lot for the hint

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