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參數資料
| 型號： | TPS51113DRCR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩壓器 |
| 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： | 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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(26)
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
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