Schematic for power supply module ?

[Externet]

Hi.
This newer module step-sets the output voltage by +, - touch buttons on the bottom right; is is not the same as similar ones that use a potentiometer :

Uses a XL4015E1 chip, and a MCP6002i. Probably made by 'WHDTS' Do you know its schematic ?

 

[Nigel Goodwin]

Presumably there's also a microcontroller somewhere, that does all the work?.

 

[Externet]

There is a chip under the numerical display to drive it, and unless it has additional features; the method to step voltage has me scratching my head...
Found application note of a previous model module.
----> http://www.xlsemi.com/datasheet/xl4015 datasheet.pdf

 

[Nigel Goodwin]

There is a chip under the numerical display to drive it, and unless it has additional features; the method to step voltage has me scratching my head...

That chip will be a microcontroller, doing all the work.

The datasheet for the regulator chip doesn't really help, that's easily available and obviously doesn't mention any extra control circuitry.