Abedin, Amina HasanKhan, Md. Abdul MobinRahman, AsifurHoque, Md. Rezuanul2017-02-132017-02-1320162016ID 12321073ID 12221116ID 11321058http://hdl.handle.net/10361/7737Cataloged from PDF version of thesis report.Includes bibliographical references (page 41-42).This thesis report is submitted in partial fulfillment of the requirements for the degree of Bachelor of Science in Electrical and Electronic Engineering, 2016.Direct current to direct current (DC-DC) converters are power electronics circuits that converts direct current (DC) voltage input from one level to another. DC-DC converters are also known as switching converters, switching power supplies or switches. DC-DC converters are important in portable device such as cellular phones and laptops. In this project, the configuration of DC-DC converter chosen for study was buck configuration. Buck converter converts the DC supply voltage to a lower DC output voltage level. The buck converter is suitable for low power application due to the low voltage level at the output. The control method chosen to maintain the output voltage from the buck converter in this thesis was voltage-mode control. Voltage-mode control technique compares the actual output voltage with the reference voltage. The difference between both voltages will drive the control element to adjust the output voltage to a fix voltage level. At last we used some hardware control tools along with mat lab simulink to have the desired output voltage level.43 pagesenBRAC University thesis are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission.Feedback loopBuck converterDirect current (DC)Thesis