Electronics > Projects, Designs, and Technical Stuff

AP63203WU-7 layout review

<< < (3/4) > >>

k0cka:
Final layout with used components:

Thermal fuse - https://www.lcsc.com/product-detail/Resettable-Fuses_BHFUSE-BSMD1206-100-30V_C5358568.html (U1)

Protection diode - https://www.lcsc.com/product-detail/Diodes-General-Purpose_BORN-S3A_C19078059.html (D1)

Input capacitors - https://www.lcsc.com/product-detail/Solid-Capacitors_AISHI-Aihua-Group-SPZ1VM101E08O00RAXXX_C122240.html (C5),
                        - https://www.lcsc.com/product-detail/Multilayer-Ceramic-Capacitors-MLCC-SMD-SMT_Samsung-Electro-Mechanics-CL31A106KBHNNNE_C13585.html (C1)

Buck IC - https://www.lcsc.com/product-detail/DC-DC-Converters_Diodes-Incorporated-AP63203WU-7_C780769.html (U3)

BST capacitor - https://www.lcsc.com/product-detail/Multilayer-Ceramic-Capacitors-MLCC-SMD-SMT_Samsung-Electro-Mechanics-CL10B104KB8NNNC_C1591.html (C3)

Inductor - https://www.lcsc.com/product-detail/Power-Inductors_cjiang-Changjiang-Microelectronics-Tech-FXL0530-4R7-M_C177246.html (L2)

Output capacitors - https://www.lcsc.com/product-detail/Multilayer-Ceramic-Capacitors-MLCC-SMD-SMT_Samsung-Electro-Mechanics-CL31A226KOHNNNE_C90146.html (C2,C4)
                          - C6 not selected yet(won't be populated)

AnshumanFauzdar:
I am trying a similar circuit with AP63205WU-7 for 5v output, did you get your PCB fabricated and tested out?
I made mistakes in layout of the PCB and now the AP63205 is emitting smoke due to overheating!

T3sl4co1l:

--- Quote from: eugene on April 22, 2024, 04:00:41 pm ---
--- Quote from: mariush on April 21, 2024, 12:45:08 pm ---The rest ... some people say it's best to not have ground copper pour under the inductor (on the other side of the pcb is fine) ... I don't think it matters that much but I wouldn't put vias right under the inductor.

--- End quote ---

I'm one of those people. I found through testing with an Agilent LCR meter that a copper plane/pour below the inductor both lowers the inductance and reduces the Q. Just don't do it.

--- End quote ---

Of which types? How many styles have you tested?

Tim

k0cka:
Yes I did and it's working fine so far, I hope it helps you.
Can you share your layout by a chance?

AnshumanFauzdar:

--- Quote from: k0cka on June 20, 2024, 08:44:30 pm ---Yes I did and it's working fine so far, I hope it helps you.
Can you share your layout by a chance?

--- End quote ---

Its a total disaster but I will follow your layout design and order new PCBs to test out the new design and hopefully not fry the AP62305s ;D

Navigation

[0] Message Index

[#] Next page

[*] Previous page