- 您现在的位置：买卖IC网 > PDF目录69509 > TPS43000PWRG4 (TEXAS INSTRUMENTS INC) SWITCHING CONTROLLER, 2000 kHz SWITCHING FREQ-MAX, PDSO16 PDF资料下载
参数资料
| 型号： | TPS43000PWRG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING CONTROLLER, 2000 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封装： | GREEN, TSSOP-16 |
| 文件页数： | 7/31页 |
| 文件大小： | 615K |
| 代理商： | TPS43000PWRG4 |
第1页第2页第3页第4页第5页第6页当前第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页第26页第27页第28页第29页第30页第31页
TPS43000
SLUS489 OCTOBER 2001
15
www.ti.com
APPLICATION INFORMATION
The frequency of the poles and zeros are defined by the following equations:
zeros
f
z1 +
1
(2
p
R2
C1)
f
z2 [
1
(2
p
R1
C3)
, assuming R1
R3
poles
f
p1 +
1
(2
p
R3
C3)
f
p2 [
1
(2
p
R2
C2)
, assuming C1
C2
In voltage mode control, the buck, boost, flyback, and SEPIC toplogies all have a 2nd order double-pole LC filter
characteristic when operated in CCM. In the buck topology, the frequency of the LC double pole is straight
forward.
f
LC +
1
2
p(LC)
1 2
buck topology
In the boost, flyback, and SEPIC toplogies, the frequency of the LC double pole varies as a function of the duty
cycle.
f
LC +
(1
* D)
2
p(LC)
1 2
boost, flyback, & SEPIC topologies
In addition, each of the topologies have an ESR zero, which occurs when the output capacitor impedance
transitions from capacitive to resistive. The frequency at which this occurs is the ESR zero frequency, fESR, and
is defined by the equation:
f
ESR +
1
2
p R
ESR
C
In the boost, flyback, and SEPIC topologies operated in CCM, there is also a right half-plane (RHP) zero. The
RHP zero has the same positive gain slope as the conventional zero, but has a 90
° phase lag. This combination,
in conjunction with its dependence on line and load, make it nearly impossible to compensate within the control
loop. The frequency at which this RHP zero occurs, fRHP, is defined by the equations:
f
RHP +
R
O
(1
* D)
2
(2
p L)
boost topology
f
RHP +
R
O
(1
* D)
2
(2
p LD)
flyback topology
where RO is the equivalent output load resistance.
(6)
(7)
(8)
(9)
(10)
(11)
(12)
(13)
(14)
相关PDF资料 |
PDF描述 |
|---|---|
| TPS5102IDBT | 3 A DUAL SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO30 |
| TPS5102IDBTG4 | 3 A DUAL SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO30 |
| TPS51116PWPR | 6 A SWITCHING CONTROLLER, PDSO20 |
| TPS51116RGER | 6 A SWITCHING CONTROLLER, PQCC24 |
| TPS51116PWPRG4 | 6 A SWITCHING CONTROLLER, PDSO20 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TPS43060 | 制造商:TI 制造商全称:Texas Instruments 功能描述:Low Quiescent Current Synchronous Boost DC-DC Controller with Wide VIN Range |
| TPS43060EVM-199 | 功能描述:电源管理IC开发工具 TPS43060 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 |
| TPS43060RTER | 功能描述:DC/DC 开关控制器 Sync Boost Cntlr Wide Input Vtg 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 |
| TPS43060RTET | 功能描述:DC/DC 开关控制器 Sync Boost Cntlr Wide Input Vtg 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 |
| TPS43061EVM-198 | 功能描述:电源管理IC开发工具 TPS43061 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 |
发布紧急采购，3分钟左右您将得到回复。