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参数资料
| 型号： | TPS40001EVM-001 |
| 厂商： | Texas Instruments, Inc. |
| 英文描述： | TPS40001 Evaluation Module(TPS40001评估板) |
| 中文描述： | TPS40001评估模块（TPS40001评估板） |
| 文件页数： | 15/16页 |
| 文件大小： | 318K |
| 代理商： | TPS40001EVM-001 |
SLUU131A – September 2002 – Revised February 2003
8
TPS40001 Based Converter Delivers 10-A Output
4.7
Compensation Design
The TPS40000 uses voltage mode control in conjunction with a high frequency error amplifier. The power circuit
L-C double pole corner frequency fC is located in equation (7).
Freq
LC +
1
2
p
L
OUT
C
OUT
+ 5.1 kHz
The output capacitor ESR zero is calculated by equation (8),
F
Z(esr) +
1
2
p
R
ESR
C
OUT
+ 33.8 kHz
where the two POSCAPs ESR of 5 m
is used in the calculation because the 1 F is effectively out of the picture
at these relatively low frequencies.
The feedback compensation network is implemented to provide two zeroes and three poles. The first pole is
placed near the origin to improve dc regulation.
The first zero is placed below fC at 2.2 kHz in equation (9).
f
z1 +
1
2
p
R
6 ) R7
C
15
The second zero is placed at 18 kHz shown in equation (10).
f
z2 +
1
2
p
R
4
C
7
The first pole is placed near the ESR zero frequency in equation (11),
f
p1 +
1
2
p
R
7
C
15
and the second pole is placed at one-half the switching frequency at 150 kHz to allow a high-speed transient
response, shown in equation (12).
f
p2 +
1
2
p
R
4
C
7
C
11
C
7)C11
(7)
(8)
(9)
(10)
(11)
(12)
相关PDF资料 |
PDF描述 |
|---|---|
| TPS40001 | Low Input Voltage Mode Synchronous Buck Controller |
| TPS40002 | "Low Input (2.25V-5.5V) 600 kHz Frequency |
| TPS40003EVM | TPS40003 Evaluation Module(TPS40003评估板) |
| TPS40003 | Low Input Voltage Mode Synchronous Buck Controller |
| TPS40004 | "Low Input (2.25V-5.5V) 300 kHz Frequency |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TPS40002 | 制造商:TI 制造商全称:Texas Instruments 功能描述:LOW-INPUT VOLTAGE-MODE SYNCHRONOUS BUCK CONTROLLER |
| TPS40002DGQ | 功能描述:电压模式 PWM 控制器 Lo Input 600kHz Freq Synch Buck Cntrlr RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| TPS40002DGQG4 | 功能描述:电压模式 PWM 控制器 Lo Input 600kHz Freq Synch Buck Cntrlr RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| TPS40002DGQR | 功能描述:电压模式 PWM 控制器 Lo Input 600kHz Freq Synch Buck Cntrlr RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| TPS40002DGQRG4 | 功能描述:电压模式 PWM 控制器 Lo Input 600kHz Freq Synch Buck Cntrlr RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
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