Compact Isolated SMPS & PCB Design

Design 150W Isolated SMPS (12V 10A + 5V + 3.3V) with PCB & Gerber

I need a professional electrical engineer to design a compact, isolated SMPS power supply for a commercial product.

## Requirements:

### Input:

* 90–265V AC
* PCB-mounted IEC C6 (laptop-type input)

### Outputs:

* 12V @ 10A (main rail)
* 5V @ 5A
* 3.3V @ 3A

### Topology:

* Preferred: Flyback (or suggest better if needed for reliability)
* Isolation required (safety critical)

### PCB Constraints:

* Size: Approx. 35–45 mm width × 120–150 mm length
* Compact design for slim enclosure
* SMD preferred

### Features:

* EMI filter (MOV, NTC, CM choke)
* Full protections: OVP, OCP, SCP
* Low ripple and stable output
* Proper thermal design

### Deliverables:

* Complete schematic (annotated)
* Transformer design (with winding details)
* PCB layout (EasyEDA preferred)
* Gerber files (manufacturing ready)
* BOM with part numbers
* Test points and debugging guide

### Additional Requirements:

* Should be suitable for 3-year warranty commercial product
* Must follow proper isolation and safety standards

Bonus (optional but preferred):

* Experience with SMPS >100W
* EMI/thermal optimization experience
* Prior similar project samples

Goal:

This will be used in a commercial embedded system, so reliability and manufacturability are very important.

Please include your approach and similar past work in your proposal.