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| 型号： | TPS40130RHBRG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING CONTROLLER, 1200 kHz SWITCHING FREQ-MAX, PQCC32 |
| 封装： | GREEN, PLASTIC, QFN-32 |
| 文件页数： | 7/38页 |
| 文件大小： | 950K |
| 代理商： | TPS40130RHBRG4 |
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Setting Overcurrent Protection
V
ILIM + 2.7
I
PH(max)
R
CS
(7)
I
PH(max) +
I
OUT
2
)
V
IN * VOUT
V
OUT
2
L
OUT
f
SW
V
IN
(8)
Resistor Divider Calculation for VOUT, ILIM, OVSET and UVLO
R
BIAS + 0.7
R1
V
OUT * 0.7
(9)
R6 + R5
V
ILIM
0.7 * VILIM
(10)
R4 + 0.812
R3
V
OUT(ov) * 0.812
(11)
R8 + 1.0
R7
V
IN * 1.0
(12)
Feedback Loop Compensation
f
OP +
1
2p
R
OUT
C
OUT
(13)
f
ESRZ +
1
2p
R
ESR
C
OUT
(14)
SLUS602B – JUNE 2004 – REVISED SEPTEMBER 2005
Setting the overcurrent protection is given in the following equations. Care must be taken when calculating VILIM
to include the increase in RCS caused by the output current as it approaches the overcurrent trip point. The DCR
(RCS in the equation) of the inductor increases approximately 0.39% per degree Centigrade.
where
I
PH(max) is a maximum value of the phase current allowed
I
OUT is the total maximum DC output current
L
OUT is the output inductor value
f
SW is the switching frequency
V
OUT is the output voltage
V
IN is the input voltage
R
CS is a value of the current sense resistor used or the DCR value of the output inductor, LOUT
Use Figure 9 for setting the output voltage, current limit voltage and overvoltage setting voltage. Select RBIAS
using Equation 9. With a voltage divider from VREF, select R6 using Equation 10. WIth a voltage from DIFFO
The TPS40130 operates in a peak-current mode and the converter exhibits a single pole response with ESR
zero for which Type II compensation network is usually adequate as shown in Figure 5.
The load pole is situated at a value calculated using Equation 13.
and the ESR zero is situated at a value calculated using Equation 14.
To achieve the desired bandwidth the error amplifier has to compensate for modulator gain loss at the crossover
frequency. A zero placed at the load pole frequency facilitates that. The ESR zero alters the modulator -1 slope
at higher frequencies. To compensate for the ESR zero, a pole in the error amplifier transfer function should be
placed at the ESR zero frequency.
15
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|---|---|
| TPS40130RHBT | 功能描述:DC/DC 开关控制器 2-Ch Multiphase Buck DC/DC w/Int Drvr RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| TPS40130RHBTG4 | 功能描述:DC/DC 开关控制器 2-Ch Multiphase Buck DC/DC w/Int Drvr RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| TPS40131 | 制造商:TI 制造商全称:Texas Instruments 功能描述:TWO-PHASE, SYNCHRONOUS BUCK CONTROLLER WITH INTEGRATED MOSFET DRIVERS |
| TPS40131EVM | 功能描述:电源管理IC开发工具 TPS40131 Eval Mod RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| TPS40131RHBR | 功能描述:DC/DC 开关控制器 2-Ph Synch Buck Cntr RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
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