công cụ tìm kiếm bảng dữ liệu linh kiện điện tử
  Vietnamese  ▼
ALLDATASHEET.VN

X  

Preview PDF HTML

ADP3188 bảng dữ liệu(PDF) 21 Page - Analog Devices

tên linh kiện ADP3188
Giải thích chi tiết về linh kiện  6-Bit Programmable 2-/3-/4-Phase Synchronous Buck Controller
PDF  28 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
nhà sản xuất  AD [Analog Devices]
Trang chủ  http://www.analog.com
Logo AD - Analog Devices

ADP3188 bảng dữ liệu(HTML) 21 Page - Analog Devices

Back Button ADP3188 Datasheet HTML 17Page - Analog Devices ADP3188 Datasheet HTML 18Page - Analog Devices ADP3188 Datasheet HTML 19Page - Analog Devices ADP3188 Datasheet HTML 20Page - Analog Devices ADP3188 Datasheet HTML 21Page - Analog Devices ADP3188 Datasheet HTML 22Page - Analog Devices ADP3188 Datasheet HTML 23Page - Analog Devices ADP3188 Datasheet HTML 24Page - Analog Devices ADP3188 Datasheet HTML 25Page - Analog Devices Next Button
Zoom Inzoom in Zoom Outzoom out
 21 / 28 page
background image
ADP3188
Rev. A | Page 21 of 28
A type-three compensator on the voltage feedback is adequate
for proper compensation of the output filter. Equations 25 to 29
yield an optimal starting point for the design; some adjustments
may be necessary to account for PCB and component parasitic
effects (see the section).
The first step is to compute the time constants for all of the
poles and zeros in the system
(
)
VID
O
X
RT
VID
RT
L
DS
D
O
E
V
R
C
n
V
D
n
L
V
V
R
R
A
R
n
R
×
×
×
×
×
−
×
×
+
×
+
×
+
×
=
1
2
(
)
Ω
m
24.2
V
1.3
Ω
m
1
mF
4.45
4
V
0.49
0.432
1
nH
320
2
V
1.3
V
0.49
Ω
m
1.4
Ω
m
2.4
5
Ω
m
1
4
=
×
×
×
×
−
×
×
+
×
+
×
+
×
=
E
R
(25)
()
()
µs
2.50
Ω
m
10.63
Ω
m
0.65
Ω
m
1
Ω
m
1
pH
350
Ω
m
0.5
Ω
m
1
mF
4.45
=
−
×
+
−
×
=
′
−
×
+
′
−
×
=
X
O
O
X
O
X
A
R
R
R
R
L
R
R
C
T
(26)
()
(
)
ns
580
mF
4.45
Ω
m
1
Ω
m
0.5
Ω
m
0.63
=
×
−
+
=
×
−
′
+
=
X
O
X
B
C
R
R
R
T
(27)
µs
4.7
Ω
m
24.2
V
1.3
kHz
330
2
Ω
m
2.4
5
nH
320
V
0.49
2
=
×
⎟⎟
⎠
⎞
⎜⎜
⎝
⎛
×
×
−
×
=
×
⎟⎟
⎠
⎞
⎜⎜
⎝
⎛
×
×
−
×
=
E
VID
SW
DS
D
RT
C
R
V
f
R
A
L
V
T
(28)
()
(
)
()
ns
333
Ω
m
1
µF
180
Ω
m
0.5
Ω
m
1
mF
4.45
Ω
m
1
µF
180
mF
4.45
'
2
2
=
×
+
−
×
×
×
=
×
+
−
×
×
×
=
O
Z
O
X
O
Z
X
D
R
C
R
R
C
R
C
C
T
(29)
where, for the ADP3188, R' is the PCB resistance from the
bulk capacitors to the ceramics and where RDS is the total low-
side MOSFET on resistance per phase. In this example, AD is 5,
VRT equals 0.49 V, R' is approximately 0.5 mΩ (assuming a
4-layer, 1 ounce motherboard), and LX is 350 pH for the eight
Al-Poly capacitors.
The compensation values can then be solved using the following:
pF
342
Ω
k
1.21
Ω
m
24.2
µs
2.50
Ω
m
1
4
=
×
×
×
=
×
×
×
=
CA
R
R
T
R
n
C
B
E
A
O
A
(30)
Ω
k
13.7
pF
342
µs
4.7
=
=
=
A
C
A
C
T
R
(31)
nF
479
Ω
k
1.21
ns
580
=
=
=
B
B
B
R
T
C
(32)
F
p
24.3
Ω
k
13.7
ns
333
=
=
=
A
D
FB
R
T
C
(33)
These are the starting values, prior to tuning the design, to
account for layout and other parasitic effects (see the section).
The final values selected after tuning are
pF
22
pF
470
Ω
k
1
.
12
pF
470
=
=
=
=
FB
B
A
A
C
C
R
C



Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28


bảng dữ liệu tải về

Go To PDF Page


Link URL



Cho đến nay ALLDATASHEET có giúp ích cho doanh nghiệp của bạn hay không?  [ DONATE ] 

Alldatasheet là   |   Quảng cáo   |   Liên lạc với chúng tôi   |   Chính sách bảo mật   |   Liên kết đến bảng dữ liệu    |   Trao đổi link   |   Tìm kiếm theo nhà sản xuất
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com