Designing a 12V, 10A SMPS with AC 230V Input - Request for Suggestions

[Krishhhhh]

Hello everyone,

I’m currently working on designing a 12V, 10A SMPS with the following specifications:

• Input: AC 230V RMS, 50Hz (single phase)
• Output: 12V DC, 10A

I would appreciate your advice or suggestions on the following design considerations:

1. Topology:​

Which topology would be best suited for my use case? Some of the options I’ve come across include:

• Flyback, Push-Pull, Half-Bridge/Full-Bridge?

What topology would you recommend for balancing complexity, cost, and efficiency?

2. Part Selection:​

I’d appreciate guidance on selecting the key components:

• Transformer: What should I consider in terms of turns ratio, core size, and type (e.g., ferrite core)?
• Rectifiers: What type would be best for my output stage? Should I consider Schottky diodes or silicon-based rectifiers?
• Filter Capacitors: Any suggestions on choosing the right capacitance and voltage rating for the output filter?
• Voltage Regulator/Control IC: Which control ICs would be ideal for this power range?

Any specific part recommendations would be very helpful.

3. Design Process:​

What’s the best way to approach the design of this power supply from scratch?

4. Simulation Tools:​

I’ve been using Proteus for some simulations, but I’ve noticed that certain components are not available. Are there other good alternatives that might offer more flexibility or accurate results? I’ve heard of LTspice, but I’m not familiar with how comprehensive its library is for SMPS components. Any recommendations on simulation tools would be great.

Lastly, how should I validate the design after simulating it? Are there specific checks or tests I should focus on?

Thanks in advance for your advice! I’m excited to hear from you all and get started on this project.

 

[Delta Prime]

In addition to the basic specifications you have compiled.
Design specifications must be defined!
Requirement for electrical isolation between input and output.
Temperature range of operation.
Expected in-rush current.
Peak and average output current.
Transient exposure and response needs.
Load- and line-regulation
requirements.
Switching frequency.
In addition to EMI, EMC needs, include you need to define power factor correction (PFC), Underwriters
Laboratories (UL), or other certifications. How else are you going to be able to define topology and component requirements?

 

[orson_cart]

Hello everyone,

I’m currently working on designing a 12V, 10A SMPS with the following specifications:

• Input: AC 230V RMS, 50Hz (single phase)
• Output: 12V DC, 10A

I would appreciate your advice or suggestions on the following design considerations:

1. Topology:​

Which topology would be best suited for my use case? Some of the options I’ve come across include:

• Flyback, Push-Pull, Half-Bridge/Full-Bridge?

What topology would you recommend for balancing complexity, cost, and efficiency?

2. Part Selection:​

I’d appreciate guidance on selecting the key components:

• Transformer: What should I consider in terms of turns ratio, core size, and type (e.g., ferrite core)?
• Rectifiers: What type would be best for my output stage? Should I consider Schottky diodes or silicon-based rectifiers?
• Filter Capacitors: Any suggestions on choosing the right capacitance and voltage rating for the output filter?
• Voltage Regulator/Control IC: Which control ICs would be ideal for this power range?

Any specific part recommendations would be very helpful.

3. Design Process:​

What’s the best way to approach the design of this power supply from scratch?

4. Simulation Tools:​

I’ve been using Proteus for some simulations, but I’ve noticed that certain components are not available. Are there other good alternatives that might offer more flexibility or accurate results? I’ve heard of LTspice, but I’m not familiar with how comprehensive its library is for SMPS components. Any recommendations on simulation tools would be great.

Lastly, how should I validate the design after simulating it? Are there specific checks or tests I should focus on?

Thanks in advance for your advice! I’m excited to hear from you all and get started on this project.

Hello there - you could do this with 2 flybacks off the rectified and smoothed mains ( 12V 5A each ) - or with a full bridge running at 37.5kHz using IR2110 as gate drives and the UC3856 as the controller ( current mode ) using a CT on the Tx - you'll need an output choke and snubbers on the output diodes.

 

[Bluejets]

Buy one for $30.

 

[orson_cart]

Buy one for $30.

perhaps you could helpfully post a link to said $30 psu for the OP ?

 

[orson_cart]