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參數資料
型號： TPS40131RHBR
廠商： TEXAS INSTRUMENTS INC
元件分類： 穩壓器
英文描述： SWITCHING CONTROLLER, 1200 kHz SWITCHING FREQ-MAX, PQCC32
封裝： GREEN, PLASTIC, QFN-32
文件頁數： 17/40頁
文件大?。?/td> 940K
代理商： TPS40131RHBR
www.ti.com
fESR
OUT
1
176.8 kHz
2
C
ESR
=
p
(45)
+
C2
R2
R3
C1
V
REF
C3
R1
(
)
(
)
(
)
(
) (
)
(
)
C(s)
s
R1
R3
C1
1
s
R2
C2
1
G
C2
C3
R1
C2
C3
s
R3
C1
1
s
R2
1
C2
C3
+
+
+
÷
=
÷
+
è
+
+
÷
÷
+
è
è
(46)
V(s)
C(s)
VC(s)
T
G
=
(47)
f
P1
ESR
1
2
R3
C1
=
p
(48)
f
P2
SW
1
C2
C3
2
R2
C2
C3
=
p
÷
+
è
(49)
f
Z1
VCP1
1
2
R2
C2
=
p
(50)
(
)
f
Z 2
VCP 2
1
2
R1
R3
C1
=
p
+
(51)
f
V
C
T ( j
2
)
1
p
=
(52)
(
)
( )
4
CM
1
A
2.09
10
R1
C2
C3
=
÷
÷
+
è
(53)
SLVS635 – FEBRUARY 2007
The ESR zero is calculated in Equation 45.
In this design, a Type III compensator is employed to compensate the loop.
Figure 9. Type III Compensator
The compensator transfer function is shown in Equation 46.
The loop gain transfer function is shown in Equation 47.
Assume the desired crossover frequency is 20 kHz. Place one zero at fVCP1 and another zero at fVCP2, then
place one pole at fESRand another pole at fSW. The compensator gain is then calculated to achieve the desired
bandwidth. In this design, the compensator gain, pole and zero are selected using the following equations:
From Equation 52 the compensator gain is solved as 2.09
×104.
Set R1 equal to 10 k
, and then calculate all the other components.
24
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相關代理商/技術參數
參數描述
TPS40131RHBRG4 功能描述:DC/DC 開關控制器 Two-Phase Synch Buck Cntrlr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK
TPS40131RHBT 功能描述:DC/DC 開關控制器 2-Ph Synch Buck Cntr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK
TPS40131RHBT 制造商:Texas Instruments 功能描述:DC/DC Converter (DC-DC) / Switching Regu 制造商:Texas Instruments 功能描述:IC, SYNC BUCK CONTROLLER, QFN-32
TPS40131RHBTG4 功能描述:DC/DC 開關控制器 Two-Phase Synch Buck Cntrlr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK
TPS40132 制造商:TI 制造商全稱:Texas Instruments 功能描述:TWO-PHASE, SYNCHRONOUS BUCK CONTROLLER WITH INTEGRATED MOSFET DRIVERS
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