Post History

80%

+6 −0

Q&A How do I design a flyback converter? What are the basics I should know?

I need to design a simple flyback converter like this: - I want to control duty cycle from another circuit such as an MCU but, I'm unsure how to proceed. My requirements are: - Input voltage 125 ...

2 answers · posted 4y ago by Andy aka‭ · last activity 3y ago by Andy aka‭

Question flyback-converter

#3: Post edited by

Andy aka‭ · 2020-07-01T10:58:56Z (over 4 years ago)

Copy Link

Raw

Markdown

I need to design a simple flyback converter like this: -
![Image alt text](https://electrical.codidact.com/uploads/3rFDTsFvTPgrm1EKXbHYxbyG)
I want to control duty cycle from another circuit such as an MCU but, I'm unsure how to proceed. My requirements are: -
~~- Input voltage 125 volts~~
~~- Output voltage 500 volts~~
~~- Load resistance is 10 kohm~~
~~- Transformer 1:1. Inductance 1 mH~~
~~- Operating frequency 100 kHz~~

I need to design a simple flyback converter like this: -
![Image alt text](https://electrical.codidact.com/uploads/3rFDTsFvTPgrm1EKXbHYxbyG)
I want to control duty cycle from another circuit such as an MCU but, I'm unsure how to proceed. My requirements are: -
- Input voltage `125 volts`
- Output voltage `500 volts`
- Load resistance is `10 kohm`
- Transformer turns ratio `1:1`
- Primary/secondary inductance `1 mH`
- Operating frequency `100 kHz`

#2: Post edited by

Andy aka‭ · 2020-07-01T10:57:23Z (over 4 years ago)

Copy Link

Raw

Markdown

I need to design a simple flyback converter like this: -
![Image alt text](https://electrical.codidact.com/uploads/3rFDTsFvTPgrm1EKXbHYxbyG)
I want to control duty cycle from another circuit such as an MCU but, I'm unsure how to proceed. My requirements are: -
~~- Input voltage 12 volts~~
~~- Output voltage 16 volts~~
- Load resistance is 5 ohms
~~- Transformer 1:1. Inductance 1μH~~
- Operating frequency 100 kHz

I need to design a simple flyback converter like this: -
![Image alt text](https://electrical.codidact.com/uploads/3rFDTsFvTPgrm1EKXbHYxbyG)
I want to control duty cycle from another circuit such as an MCU but, I'm unsure how to proceed. My requirements are: -
- Input voltage 125 volts
- Output voltage 500 volts
- Load resistance is 10 kohm
- Transformer 1:1. Inductance 1 mH
- Operating frequency 100 kHz

#1: Initial revision by

Andy aka‭ · 2020-06-30T10:43:59Z (over 4 years ago)

Copy Link

Raw

Markdown

I need to design a simple flyback converter like this: -

![Image alt text](https://electrical.codidact.com/uploads/3rFDTsFvTPgrm1EKXbHYxbyG)

I want to control duty cycle from another circuit such as an MCU but, I'm unsure how to proceed. My requirements are: -

 - Input voltage 12 volts
 - Output voltage 16 volts
 - Load resistance is 5 ohms
 - Transformer 1:1. Inductance 1μH
 - Operating frequency 100 kHz

Communities

Post History