Need circuit diagram of 5V 9V 12V 20W Phone 12 Quick charger adapter, Portable fast QC3.0 20w PD Fast Charger for smartphone charging. For more details, kindly refer this website https://www.alibaba.com/product-detail/5V-9V-12V-20W-Phone-12_1600155498873.html?s=p
and it must be cheap and best quality keeping in mind indian consumer market. Thank you

 

Need circuit diagram of 5V 9V 12V 20W Phone 12 Quick charger adapter, Portable fast QC3.0 20w PD Fast Charger for smartphone charging. For more details, kindly refer this website https://www.alibaba.com/product-detail/5V-9V-12V-20W-Phone-12_1600155498873.html?s=p
and it must be cheap and best quality keeping in mind indian consumer market. Thank you

I don't understand. You say you want a circuit diagram, but then you say it must be cheap. What is it that you want to be cheap? The circuit diagram or the implementation of that diagram. Your purpose is not clear.

 

Just buy one instead of trying to make one , it's far cheaper.

 

Need circuit diagram of 5V 9V 12V 20W Phone 12 Quick charger adapter, Portable fast QC3.0 20w PD Fast Charger for smartphone charging. For more details, kindly refer this website https://www.alibaba.com/product-detail/5V-9V-12V-20W-Phone-12_1600155498873.html?s=p
and it must be cheap and best quality keeping in mind indian consumer market. Thank you

Are you really expecting one of us to donate our precious time to design a competitive product for you, with no compensation? We are not a charity organization!
If you really want the information that badly, invest in the very small cost to purchase one. Then you can pull it apart and copy it.
Do your own dirty work!

 

How many do you intend to manufacture? It’s going to be hard to beat $3 each.

 

Just buy one instead of trying to make one , it's far cheaper.

He might want to copy the design and make them in volume. This might be tough row to hoe without a design. Given the current state of global relations, buying things from China just might be a problem.

 

I just wanted to know from where can I get the datasheet to have reference circuit to design & develop this type of product with these same i/p & o/p parameters as mentioned in that link? not want to copy that charger, just wanted to design for the same specification of that charger in that same reference link for my indian consumers. thanks

 

Generally speaking, these types of devices require the design of an SMPS (Switch Mode Power Supply). If you have the input and output specifications, then a potential design candidate can be selected. Because isolation from the AC mains is an important consideration the use of a transformer is pretty much a given. Getting regulatory certification is easier as well. In the particular case you cited, the more options you have the more challenging the design will be.

 

Generally speaking, these types of devices require the design of an SMPS (Switch Mode Power Supply). If you have the input and output specifications, then a potential design candidate can be selected. Because isolation from the AC mains is an important consideration the use of a transformer is pretty much a given. Getting regulatory certification is easier as well. In the particular case you cited, the more options you have the more challenging the design will be.

kindly help me with the datasheet source for such smps designs

 

kindly help me with the datasheet source for such smps designs

I am not aware that designs are routinely documented in datasheets. Why would you think that I, or anyone else for that matter, would have access to such information. There may be reference designs associated with particular chips that you might use but they are generally incomplete. You typically will not be able to build a product from such reference designs. Manufacturers may have evaluation boards for new chips they are introducing and maybe those might be of interest to you.

ETA: One or more of the parts used in design referenced by post #1 appear to be obsolete or discontinued parts. Designing a product with these parts is a dubious economic enterprise. You are quite likely to get burned badly.