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AXP192 does not always start when power is applied #12

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Flyua opened this issue May 7, 2021 · 2 comments
Open

AXP192 does not always start when power is applied #12

Flyua opened this issue May 7, 2021 · 2 comments

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@Flyua
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Flyua commented May 7, 2021

LilyGo-T-PCIE built-in Cell Li-Battery and Power System Management IC AXP192 often does not start correctly due to the operation of its built-in protection at the adapter and USB VBUS inputs.
@LilyGO
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LilyGO commented Sep 25, 2021

Can you describe in detail what happens when it doesn't work? Do you have a video

@star297
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star297 commented Nov 24, 2021

We added a resistor (470R) in position R28 (it's not fitted) to VINT pin.
That worked for us, can be intermittent not stating when applying power via USB or 5v-IN.
Had a couple of boards with this problem, might be an idea for LilyGO to fit the resistor during production.

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@star297 @LilyGO @Flyua