- 您现在的位置：买卖IC网 > PDF目录69508 > TPS40050PWP (TEXAS INSTRUMENTS INC) 0.2 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO16 PDF资料下载
参数资料
| 型号： | TPS40050PWP |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 0.2 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封装： | GREEN, PLASTIC, HTSSOP-16 |
| 文件页数： | 10/36页 |
| 文件大小： | 648K |
| 代理商： | TPS40050PWP |
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页当前第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页第32页第33页第34页第35页第36页
TPS40050
TPS40051
TPS40053
SLUS540F DECEMBER 2002 REVISED JUNE 2004
www.ti.com
18
APPLICATION INFORMATION
Minimum Load Resistance
Care must be taken not to load down the output of the error amplifier with the feedback resistor, R2, that is too
small. The error amplifier has a finite output source and sink current which must be considered when sizing R2.
Too small a value does not allow the output to swing over its full range.
R2
(MIN) +
V
C(max)
I
SOURCE (min)
+ 3.5 V
2mA
+ 1750 W
CALCULATING THE BOOST AN BP10 BYPASS CAPACITOR
The BOOST capacitance provides a local, low impedance source for the high-side driver. The BOOST capacitor
should be a good quality, high-frequency capacitor. The size of the bypass capacitor depends on the total gate
charge of the MOSFET and the amount of droop allowed on the bypass capacitor. The BOOST capacitance
is described in equation (29).
C
BOOST +
Qg
DV
(Farads)
The 10-V reference pin, BP10V provides energy for both the synchronous MOSFET and the high-side
MOSFET via the BOOST capacitor. Neglecting any efficiency penalty, the BP10V capacitance is described in
equation (30).
C
BP10 +
Q
gHS ) QgSR
DV
(Farads)
dv/dt INDUCED TURN-ON
MOSFETs are susceptible to dv/dt turn-on particularly in high-voltage (VDS) applications. The turn-on is caused
by the capacitor divider that is formed by CGD and CGS. High dv/dt conditions and drain-to-source voltage, on
the MOSFET causes current flow through CGD and causes the gate-to-source voltage to rise. If the
gate-to-source voltage rises above the MOSFET threshold voltage, the MOSFET turns on, resulting in large
shoot-through currents. Therefore, the SR MOSFET should be chosen so that the CGD capacitance is smaller
than the CGS capacitance.
(28)
(29)
(30)
相关PDF资料 |
PDF描述 |
|---|---|
| TPS40050PWPG4 | 0.2 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO16 |
| TPS40051PWPR | 0.2 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO16 |
| TPS40053PWPG4 | 0.2 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO16 |
| TPS40053PWP | 0.2 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO16 |
| TPS40053PWPRG4 | 0.2 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO16 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TPS40050PWPG4 | 功能描述:DC/DC 开关控制器 Wide Input Vltg Synch Buck Cntrlr 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 |
| TPS40050PWPR | 功能描述:DC/DC 开关控制器 Wide Input Vltg Synch Buck Cntrlr 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 |
| TPS40050PWPRG4 | 功能描述:DC/DC 开关控制器 Wide Input Vltg Synch Buck Cntrlr 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 |
| TPS40050-Q1 | 制造商:TI 制造商全称:Texas Instruments 功能描述:WIDE-INPUT SYNCHRONOUS BUCK CONTROLLER |
| TPS40050QPWPRQ1 | 功能描述:DC/DC 开关控制器 Auto Cat Wide-Input Synch Buck 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 |
发布紧急采购，3分钟左右您将得到回复。