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參數(shù)資料
| 型號(hào)： | TPS40021EVM-001 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | High-Efficiency Synchronous Buck Converter with PWM Controller Evaluation Module(帶PWM控制器的高效率同步降壓轉(zhuǎn)換器TPS40021的評(píng)估模塊) |
| 中文描述： | 高效率同步降壓轉(zhuǎn)換器與PWM控制器評(píng)估模塊（帶脈寬調(diào)制控制器的高效率同步降壓轉(zhuǎn)換器TPS40021的評(píng)估模塊） |
| 文件頁數(shù)： | 4/13頁 |
| 文件大?。?/td> | 405K |
| 代理商： | TPS40021EVM-001 |
SLUU144A April 2003 Revised November 2003
4
TPS40021EVM001 High-Efficiency Synchronous Buck Converter with PWM Controller Evaluation Module (HPA009)
2.4
Compensation Design
Voltage-mode control is used in this evaluation module, using R2, R7, R8, C14, C15, and C16
to form a Type-III compensation network. The L-C frequency of the power stage is
approximately 4.9-kHz and the ESR-zero is around 34 kHz. The overall crossover frequency,
f
0db
, is chosen at 43-kHz for reasonable transient response and stability. Two zeros f
Z1
and f
Z2
from the compensator are set at 2.4 kHz and 4 kHz. The two poles,
f
P1
and
f
P2
are set at
34 kHz and 115 kHz. The frequency of poles and zeros are defined by the following equations:
f
Z1
1
2
R7
C14
f
Z2
1
2
R2
C11
(assuming R2
R8)
f
P1
1
2
R8
C11
f
P2
1
2
R7
C12
(assuming C14
C12)
The transfer function for the compensator is calculated in equation (10).
A(s)
(1
s
C14
R7)
[1
s
C11
(R2
R3)]
s
R2
C14
1
C12
C14
s
R7
C12
(1
s
R8
C11)
Figure 3 shows the close loop gain and phase. The overall crossover frequency is approximately
30 kHz. The phase margin is 57
°
.
10
30
10
30
50
50
100
1 k
fOSC Oscillator Frequency kHz
Figure 2.
10 k
100 k
0
20
40
20
40
50
200
100
150
0
100
50
150
G
Gain
Phase
P
°
OVERALL GAIN AND PHASE
vs
OSCILLATOR FREQUENCY
(6)
(7)
(8)
(9)
(10)
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| TPS40021MPWPEP | 功能描述:DC/DC 開關(guān)控制器 Enhanced Prod Synch Buck Controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| TPS40021MPWPREP | 功能描述:DC/DC 開關(guān)控制器 Enhanced Prod Synch Buck Controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| TPS40021PWP | 功能描述:DC/DC 開關(guān)控制器 Low Input Sync Buck Cntrlr source/sink RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| TPS40021PWPG4 | 功能描述:DC/DC 開關(guān)控制器 Low Input Sync Buck Cntrlr source/sink RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| TPS40021PWPR | 功能描述:DC/DC 開關(guān)控制器 Low Input Sync Buck Cntrlr source/sink RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
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