The design of DC constant current power supply in magnetic controllable transformer based on BUCK topology

摘要

Nowadays, as the development of economy and technology, more and more electric devices need a DC voltage power source to supply a constant current. The Magnetic controllable transformer is also use a DC control module to provide a stable and reliable DC current. By a TMS320F2812 DSP chip as controller, this paper presents a design of DC constant current power supply based on the BUCK topology. A power prototype was set up in the laboratory, test results proved that the design is well applied to a magnetic controllable transformer.