Sw6106 power bank

Engineer asked Nov 28,2020
0

Can you help me to understand why my pcb works only with usbc connected 

If leave only the battery it not works ... no 5v as out 


This is the schema 

https://pasteboard.co/JChc1yR.png

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    The SW6106 should turn on when a load is connected or the KEY is quickly pressed. Does the 5V (Port-A) turn on when you press the KEY? There is also a light-load detection feature that will automatically turn off the 5V if the load is too small. So you can try applying a load > 60mA and see what happens. I copied this from the datasheet and seems like it could be relevant. Check to see if your circuit is doing this: https://www.waveshare.com/w/upload/e/ed/SW6106_Datasheet_Release_DS008_v1.0.pdf "9.4 Type C Interface The SW6106 integrates Type-C logic controller include try.SRC role. When SOURCE is attached, charger will automatically turn on to charge battery. When SOURCE is detached, charger will automatically turn off. When SINK is attached, boost will automatically turn on to supply device. When SINK is detached, boost will turn off . When SINK is attached and boost turns on , the SW6106 works in SOURCE role, and will broadcast power level of 3A. if adapter inserts in Micro-B port and boost not turns on, the 6106 will also broadcast power level of 3A."

    Dec 21,20200 Comments
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