1. Burhan ALTUN/Batman University
DC-DC BOOST CONVERTER
The main idea of the DC to DC converter
is based on boost type. The purpose of the project is todevelop DC to DC converter
(boost type) that converts theunregulated DC input to a controlled DC output withdesired
voltage level. The main objectives of this projectare designing and constructing a DC to DC
converter (boosttype) circuit practically with input voltage, 12 V and theoutputvoltage,24V.
𝑉𝑠 = 12𝑉
𝑉𝑜 = 48𝑉
P=50W
f=25kHZ
P=
𝑣 𝑜
2
𝑅
 R=
𝑣 𝑜
2
𝑃
 R=
(48)2
50
 R=46,08 ohm
D=1-
𝑣 𝑠
𝑣 𝑜
D=1-
12
48
D=0,75
𝐿 𝑚𝑖𝑛 =
𝐷(1−𝐷)2(𝑅)
2𝑓
 𝐿 𝑚𝑖𝑛 =
0,75(1−0,75)2(46,08)
2.25,000
 𝐿 𝑚𝑖𝑛 = 43,2 µ𝐻
𝐼𝐿 =
𝑣 𝑠
(1−𝐷)2(𝑅)
 𝐼𝐿 =
12
(1−0,75)2(46,08)
 𝐼𝐿 = 4,167 𝐴
∆𝐼 𝐿
2
=
𝑣 𝑠 𝐷𝑡
2𝐿𝑓

∆𝐼 𝐿
2
=
12.0,75
2(60𝑥10−6)25000
 ∆𝐼𝐿 = 3 𝐴
𝐼 𝑚𝑎𝑥=4,167+3  Imax=7,167 A
𝐼 𝑚𝑖𝑛=4,167-3 𝐼 𝑚𝑖𝑛=1,67 𝐴

2. C≥
𝐷
𝑅(∆𝑣 𝑜/𝑣0) 𝑓
=
0,75
(46,08)(0,01)(25000)
= 65µ𝐹
Dc-dc boost converters are widely used in industrial applications. Many researches on dc-dc
converters concentrate on looking for the best control method. During last decade, digital
control in power electronic has been intensively used. The increasing performance and
cost reduction of digital circuits has made possible their application for power
converters control.
My design is below with ARES.