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參數(shù)資料
| 型號： | LTC3538EDCB#TRM |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 0.8 A SWITCHING REGULATOR, 1200 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | 2 X 3 MM, PLASTIC, DFN-8 |
| 文件頁數(shù)： | 5/16頁 |
| 文件大?。?/td> | 197K |
| 代理商： | LTC3538EDCB#TRM |
LTC3538
13
3538f
VOUT
R1
1V
FB
CP2
CP1
RZ
VC
R2
CZ1
3538 F05
–
+
1
2
Figure 5. Error Amplier with Type III Compensation
OPERATION
Most applications demand an improved transient response
to allow a smaller output lter capacitor. To achieve a higher
bandwidth, Type III compensation is required, providing
two zeros to compensate for the double-pole response of
the output lter. Referring to Figure 5, the location of the
poles and zeros are given by:
POLE
P
eR
C
Hz
1
3
1
232
1
π
(which is extremly close to DC)
ZERO
ZP
ZERO
Z
PO
RC
Hz
RC
Hz
1
2
1
2
1
21
=
=
π
L
LE
ZP
RC
Hz
2
1
2
=
π
where resistance is in Ohms and capacitance is in
Farads.
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