Design of a Switching Mode Power Supply with Ddual Iisolated Outputs based on TinySwitch-II
Cai Ru-hai · Telecom Power Technology · 2010
There is a need for dual isolated DC power supply in certain occasions.For the multiple isolated output switching mode power supply,the methods used in non-isolated output circuits can't be used to improve their cross-regulation,and those methods which can be used are too complex.In this paper,a kind of dual isolated output low power switching mode power supply based on TNY264 is designed,and the linear regulator is used in the auxiliary circuit to improve the cross-regulation.The design is easy and simple,and the detailed design of the high-frequency transformer is presented.The test results show that this switching mode power supply has good capability in voltage regulation and load regulation.