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參數資料
型號: TPS40074RHL
廠商: TEXAS INSTRUMENTS INC
元件分類: 穩壓器
英文描述: 2 A SWITCHING CONTROLLER, 550 kHz SWITCHING FREQ-MAX, PQCC20
封裝: PLASTIC, QFN-20
文件頁數: 21/37頁
文件大小: 448K
代理商: TPS40074RHL
www.ti.com
fLC_Pole +
1
2p
L
CO
+ 3559 Hz
(47)
fESR_Zero +
1
2p
ESR
CO
+ 8377 Hz
(48)
100
100 k
10 k
1 k
1 M
40
50
10
20
10
20
30
0
60
Frequency Hz
Gain
dB
ESR = 0
Slope = 40 dB / decade
ESR = 0.0095
Slope = 20 dB / decade
Double Pole
ESR Zero
RP1
2SAO
TPS40074
5
6
FB
COMP
UDG04126
CPZ1
RZ1
RPZ2
CP2
CZ2
RSET2
RSET1
TPS40074
SLUS617–APRIL 2005
The resulting bode plot is shown in Figure 15.
Figure 15. PWM and LC Filter Gain
The next step is to establish the required compensation gain to achieve the desired overall system response.
The target response is to have the crossover frequency between 1/10 to 1/4 times the switching frequency. To
have a phase margin greater than 45° and a gain margin greater than 6 dB.
A Type III compensation network, as shown in Figure 16, was used for this design. This network gives the best
overall flexibility for compensating the converter.
Figure 16. Type III Conpensation with TPS40074
A typical bode plot to this type of compensation network is shown in Figure 17.
28
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TPS40075RHLR 2 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PQCC20
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相關代理商/技術參數
參數描述
TPS40074RHLR 功能描述:DC/DC 開關控制器 Mid Input Sync Buck w/Vltg Feed-Fwd 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
TPS40074RHLRG4 功能描述:DC/DC 開關控制器 Mid Input Sync Buck w/Vltg Feed-Fwd 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
TPS40074RHLT 功能描述:DC/DC 開關控制器 Mid Input Sync Buck w/Vltg Feed-Fwd 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
TPS40074RHLTG4 功能描述:DC/DC 開關控制器 Mid Input Sync Buck w/Vltg Feed-Fwd 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
TPS40075 制造商:TI 制造商全稱:Texas Instruments 功能描述:4.5V TO 18V INPUT 10 PIN SYNCHRONOUS BUCK CONTROLLER WITH POWER GOOD
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