參數(shù)資料
型號: TPS51113DRCR
廠商: TEXAS INSTRUMENTS INC
元件分類: 穩(wěn)壓器
英文描述: SWITCHING CONTROLLER, 330 kHz SWITCHING FREQ-MAX, PDSO10
封裝: 3 X 3 MM, GREEN, PLASTIC, SON-10
文件頁數(shù): 7/26頁
文件大小: 2137K
代理商: TPS51113DRCR
( )
(
)
(
)
(
)
(
)
(
)
2
1
3
2
1
2
1
2
3
1
2
sR C
1
s R
R
C
1
G s
R C C
sR
C
s
1
sR C
1
C
+
+
=
+
+
+
÷
÷
÷
+
è
è
Z1
2
1
f
2
R
C
=
p
(
)
(
)
P1
1
2
1
2
1
f
C
2
R
C
=
p
÷
÷
+
è
P2
3
1
f
2
R
C
=
p
(
)
Z2
1
3
1
f
2
R
C
=
p
+
(
)
C
1
2
1
f
2
R
C
=
p
+
1
BIAS
OUT
0.8
R
V
0.8
=
-
www.ti.com ....................................................................................................................................................................................................... SLUS864 – MAY 2009
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fP1 is usually used to cancel the ESR zero in Equation 20. fP2 can be placed at higher frequency in order to
attenuate the high frequency noise and the switching ripple. fZ1 and fZ2 are chosen to be lower than the switching
frequency, and fZ1 is lower than resonant frequency f0. Suitable values can be selected to achieve the
compromise between high phase margin and fast response. A phase margin of over 60° is usually
recommended. Then, the compensator gain is chosen to achieve the desired bandwidth.
The value of RBIAS is calculated to set the output voltage VOUT.
(27)
Copyright 2009, Texas Instruments Incorporated
15
Product Folder Link(s) :TPS51113 TPS51163
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