1. Stefanov N., “Power supply”, Sofia, Technika, 2010 (in bulgarian).
2. Yudov D., V. Valchev, “Converters technic”, Varna, Technical University –Varna, 2005 (in bulgarian).
3. www.onsemi.com, “DC-DC Converters Feedback”.
4. www.infineon.com ”Buck Converter Design” Design Note DN 2013-01V1.0 January 2013.
5. Barry Rowland, “Initial Evaluation of a DC/DC Switch Mode Power Supply”, Application Note11. 2013 – 1TD04_0e, www.rohde-schwarz.com.