- 您现在的位置：买卖IC网 > PDF目录98281 > TPS40077PWPRG4 (TEXAS INSTRUMENTS INC) 2 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO16 PDF资料下载
参数资料
| 型号： | TPS40077PWPRG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 2 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封装： | GREEN, PLASTIC, HTSSOP-16 |
| 文件页数： | 26/43页 |
| 文件大小： | 847K |
| 代理商： | TPS40077PWPRG4 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页当前第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页
f Frequency kHz
20
10
0
10
20
30
40
Gain
dB
G029
0.1
1
10
1k
100
High-Frequency Gain
fZ1
fZ2
fP1
fP2
VOUT + VREF
R
Z1 ) RSET
R
SET
(50)
GAIN + RPZ2
R
Z1 ) RP1
R
Z1
R
P1
(51)
f
P1 +
1
2p
R
P1
C
PZ1
(52)
f
P2 +
C
P2 ) CZ2
2p
R
PZ2
C
P2
C
Z2
[
1
2p
R
PZ2
C
P2
(53)
f
Z1 +
1
2p
R
Z1
C
PZ1
(54)
f
Z2 +
1
2p
R
PZ2 ) RP1
C
Z2
[
1
2p
R
PZ2
C
Z2
(55)
SLUS714D – JANUARY 2007 – REVISED APRIL 2009 ..................................................................................................................................................... www.ti.com
Figure 33. Type-III Compensation Typical Bode Plot
The high-frequency gain and the break (pole and zero) frequencies are calculated using the following equations.
Looking at the PWM and LC bode plot, there are a few things which must be done to achieve stability.
1. Place two zeros close to the double pole, e.g., fZ1 = fZ2 = 4.3 kHz
2. Place both poles well above the crossover frequency. The crossover frequency was selected as one sixth the
switching frequency, fco1 = 50 kHz, fP1 = 66 kHz
3. Place the second pole at three times fco1. This ensures that the overall system gain falls off quickly to give
good gain margin, fp2 = 150 kHz
4. The high-frequency gain should be sufficient to ensure 0 dB at the required crossover frequency, GAIN = –1
× gain of PWM and LC at the crossover frequency, GAIN = 16.9 dB
Using these values and Equation 50 through Equation 55, the Rs and Cs around the compensation network can
be calculated.
1. Set RZ1 = 51 k
32
Copyright 2007–2009, Texas Instruments Incorporated
Product Folder Link(s) :TPS40077
相关PDF资料 |
PDF描述 |
|---|---|
| TPS40077PWPG4 | 2 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO16 |
| TPS40090QPWRQ1 | SWITCHING CONTROLLER, 1200 kHz SWITCHING FREQ-MAX, PDSO24 |
| TPS40101RGET | 1.3 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PQCC24 |
| TPS40131RHBT | SWITCHING CONTROLLER, 1200 kHz SWITCHING FREQ-MAX, PQCC32 |
| TPS40131RHBTG4 | SWITCHING CONTROLLER, 1200 kHz SWITCHING FREQ-MAX, PQCC32 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TPS40090 | 制造商:TI 制造商全称:Texas Instruments 功能描述:HIGH FREQUENCY MULTIPHASE CONTROLLER |
| TPS40090EVM-001 | 功能描述:电源管理IC开发工具 TPS40090-001 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 |
| TPS40090EVM-002 | 功能描述:电源管理IC开发工具 TPS40090-002 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 |
| TPS40090PW | 功能描述:DC/DC 开关控制器 4 Ch Multiphase Buck DC/DC Controller 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 |
| TPS40090PW | 制造商:Texas Instruments 功能描述:CONTROLLER IC |
发布紧急采购，3分钟左右您将得到回复。