TL494: Voltage feedback configuration and resistor values

Nafi Can Ereli

Part Number: TL494
Other Parts Discussed in Thread: UCC28251

Tool/software:

Hello,

I am designing a Full-Bridge SMPS by using TL494. Output voltage is 400 V and output current is 4.5 A.

I want to implement a voltage feedback but I don't know how to do it. What my resistor values should be and how should I connect them?

Can you help me please?

over 1 year ago

0 Hong Huang over 1 year ago

TI__Guru 74115 points

Hi,

I suggest you use UCC28251 and its datasheet has design steps. It looks you already have another e2e thread asking a different IC.

0 Nafi Can Ereli over 1 year ago in reply to Hong Huang

Prodigy 85 points

Hello Mr./Mrs. Huang,

In the other question you mentioned, I asked for another integrated circuit suggestion that could replace the TL494 IC.

However, here, I am curious about the resistors to be used for voltage feedback that their values, wattage requirements, connection types, etc. when using the TL494 IC.

I apologize for my lack of information.

Thanks in advance

Nafi Can

+1 Hong Huang over 1 year ago in reply to Nafi Can Ereli

TI__Guru 74115 points

Hi,

You can use ucc28251 design steps. For how to design a voltage feedback control please search the internet and you find many application notes. For example

Power management

Power management forum

TL494: Voltage feedback configuration and resistor values