Switch Mode Power Supply Based Battery Charger

The design is based on the fly back topology. High switching frequency makes the
components sizes to decrease, and hence reduction in the size. The efficiency of the unit
is greater than 80%. The input voltage is applied to the transformer primary which is
switched at high frequency controlled by the feedback. The feedback is incorporated
using Opto - isolators. The output of the transformer is rectified using proper rectifier diodes.
The output is further smoothened with the use of smoothing inductors to reduce the ripple
to the desired level.

• Wide input voltage tolerance
• High efficiency
• Overload, short circuit & reverse polarity protection
• Very low load & line regulation
• Output power up to 480W
• Rugged, reliable and tropicalised design
• Work with natural convection cooling(No forced air cooling required)
• The operating temp. is -5° C to +55 ° C
• Input and output terminations and LED indications