About HiepLe

HiepLe · 2024-08-21

Hi all,I am designing a wearable device with wireless charging.I have consulted the STDES-WLC38WA solution for the receiver circuit.Now I want to buy STDES-WBC86WTX and STDES-WLC38WA (images in the attached) for testing first, but I found they are no...

HiepLe · 2024-07-22

Hi all,I am designing the custom wireless charging receiver using the STWLC38JRM chipCurrently, when I put the circuit on the wireless charging pad (Qi standard), I notice that the STWLC38JRM chip does not output 5V at the VOUT pin. Below is the sche...

HiepLe · 2024-07-24

Hi @willzhou Below is my custom PCB,How can I use these firmware files?Does the MCU need to communicate with the STWLC38 chip to enable the chip?I think when placing the circuit in the TX charger, it will need to power up first, then the MCU can comm...

HiepLe · 2024-07-24

Hi @willzhou,I don't have Qi-snifferThis is the first time I have designed this STWLC38 chip and I don't have experience in this field.My customer plans to produce 10,000 devices for this applicationI am living and working in Vietnam, if you have any...

HiepLe · 2024-07-24

Hi @willzhou,Below is the scope after I modify the 2 capacitors COMA from 22nF to 47nF and 2 capacitors COMB from 10nF to 22nF, it still does not work.What should I do next? Should I continue to increase the capacitor value?Also, I attached the image...

HiepLe · 2024-07-23

Hi @willzhou,My application is a small wearable deviceI copied all the schematics of the STDES-WLC38WA design, but my circuit does not work.I think the schematic is correct.I tried with another wireless charger pad but it still did not work.With the ...

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How to purchase STDES-WBC86WTX and STDES-WLC38WA board ?

STWLC38JRM does not output 5V at VOUT pin

Re: STWLC38JRM does not output 5V at VOUT pin

Re: STWLC38JRM does not output 5V at VOUT pin

Re: STWLC38JRM does not output 5V at VOUT pin

Re: STWLC38JRM does not output 5V at VOUT pin