Part Number:UCC38083
Hello, I am an engineer and working for Ablerex. I am interesting to use a PWM IC, UCC38083, and employ it to implement a DC/DC full bridge converter. However, I can't do well on the compensation for it, which causes the output inductor current and output voltage unstable. I try hard with many parameter of compensation of output feedback, but can't make it stable. May I ask for some suggestion about it?
The specification is shown below:
Vi = 400~430 V
Vo = 80 ~ 110 V
Io_max = 8A
RT of PWM IC = 130K Ohms (switching frequency = 125 ~ 128KHz)
Topology: Full bridge converter
Transformer design: Np:Ns = 32:10
Output inductor = 60uH
Output capacitor = 220uF + 0.1uF
If I don't care the transient response, only need a very steady PWM without low-frequency ripple on output voltage output inductor. How should I do?
Please kindly supply some suggestion. I would be very appreciate. Thanks.
Sincerely,
Billy