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I have made many boards with JLPCB and their quality and service is very good.

[Country]

Country	brazil
Note	estudante engenhariA DE SOFTWARE

a 4.7uf cap has been now been added for soft-start support which can be omitted as well is this function is not wanted

info is in the schematics sheet as well and so are pdf and gerbers files

do as you wish with it and modify it to your likings

i was sorta lucky and it could be placed with a short track to ground not that it was necessary but the space was sorta easy to make for it

all the extra features can be disable/(not used) info is provided in the schamtics sheet and pdf make it as simple/advanced as you want it to be.

/sphinx

i will have a look at it i havent got a cap with a smallish footprint with that value i guess a 4.7 would work too.

i will have to do some searching for one

hopefully wont be much trouble since it is only connected ground

I would think any 5uF ish cap value will do. A larger value like 6.8 or 10 uF will most probably create a slightly longer soft-start period but nothing more. The track to ground can also be quite long. Or if it is more easy use a low ohm resistor(like one ohm) as a jumper

i will have a look at it i havent got a cap with a smallish footprint with that value i guess a 4.7 would work too.

i will have to do some searching for one

hopefully wont be much trouble since it is only connected ground

Would it be an idea to enable the internal soft-start. To do this you only need a 5uF cap connected to pin 8

Hi

For cheep project or test JLC offer low cost PCB is most suitable
For more complex PCB and batter quality PCBWay is the answer
Till today I only use JLC for doing some test circuit

All the best

Bobi

this is sort the last big edit on the schematics and pcb

nothing i can really think of to modify or any other suggestions to the design

on the schematic i added a resistor (R12) that could be used to set limit of duty sycle if wanted other wise shorted
info is in the schematic sheet

on the pcb i moved around compoents to make the ground trace more compact short efficient, i figured out the word it is optimize
previously it was long and all over the board

thanx PM3295 for for this new design and additive suggestions for extra features

 i made this a single layer board, pdf included and so are gerber files

do as you wish with it

/sphinx

[Country]

Country	South Korea
Note	I am developing automotive modules using microchip cpu. and I am very interesting the development small linux kernel. This forum is very good. so I am very hoping join this forum. Thank you.

this is now in last stages of designing not much wil be changed after this documantation/info is added to schematic

there might be a resistor added to limit the duty cycle. the circuit can be used as is if one knows that 100% might not work properly

i also modified the ground trace to be on bottom for better current handling

i dont know what more i could add

if you have followd this thread you know what this is supposed to work as there could be other ways to use this but i guess the imagination is the limit

pdf's and gerbers are included

latest changes are that now it is a sngle layer boards since it was only one trace that was on top layer now it is possible to make this even at home.

this is also a 12 volt only design since ic 8volts and up

/sphinx