Other Parts Discussed in Thread: LM5116, LM5112,
Dear engineers,
First of all, I will try to explain my situation:
I need to make symmetrical power supply +/-30V @15V:
Input voltage is 75V
For the positive side, I chose LM5116.
For the negative side I would like to use LM5112 like negative buck:
Here you can find my design for the negative side: zaporna cast v1.pdf
Since LM5112 can stand only 65V, I made a simple voltage regulator with Zener and NPN.
I would like to ask you a few questions about my design:
- Is it possible to calculate the external components the same way as in LM5116 (positive buck)?
- As a template, I used this designof positive buck with LLM5116
- As you can see I used the same Rt, Css, input and output capacitors, inductor, compensation network
- As a template, I used this designof positive buck with LLM5116
- Since LM5122 has a different principle of slope compensation, I would like to ask you how to deal with this problem.
Many thanks for your reply.