- 您现在的位置：买卖IC网 > PDF目录98064 > PTH04T261WAZ (TEXAS INSTRUMENTS INC) 1-OUTPUT DC-DC REG PWR SUPPLY MODULE PDF资料下载
参数资料
| 型号： | PTH04T261WAZ |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 电源模块 |
| 英文描述： | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| 封装： | ROHS COMPLIANT, PLASTIC, DIP-10 |
| 文件页数： | 16/36页 |
| 文件大小： | 1162K |
| 代理商： | PTH04T261WAZ |
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页当前第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
Soft-Start Power Up
UDG06044
VI
Track
GND
2
9
3
+
GND
CI
PTH04T260/261W
VI
(2 V/div)
VO
(1 V/div)
II
(1 A/div)
T Time 4 ms/div
Remote Sense
www.ti.com.................................................................................................................................................. SLTS273E – SEPTEMBER 2006 – REVISED JULY 2009
The Auto-Track feature allows the power-up of multiple PTH/PTV modules to be directly controlled from the
Track pin. However in a stand-alone configuration, or when the Auto-Track feature is not being used, the Track
Figure 19. Defeating the Auto-Track Function
Figure 20. Power-Up Waveform
When the Track pin is connected to the input voltage the Auto-Track function is permanently disengaged. This
allows the module to power up entirely under the control of its internal soft-start circuitry. When power up is
under soft-start control, the output voltage rises to the set-point at a quicker and more linear rate. From the
moment a valid input voltage is applied, the soft-start control introduces a short time delay (typically 2ms–10ms)
before allowing the output voltage to rise. The output then progressively rises to the module’s setpoint voltage.
Figure 20 shows the soft-start power-up characteristic of the PTH04T260/261W operating from a 5-V input bus
and configured for a 1.8-V output. The waveforms were measured with a 3-A constant current load and the
Auto-Track feature disabled. The initial rise in input current when the input voltage first starts to rise is the charge
current drawn by the input capacitors. Power-up is complete within 20 ms.
Differential remote sense improves the load regulation performance of the module by allowing it to compensate
for any IR voltage drop between its output and the load in either the positive or return path. An IR drop is caused
by the output current flowing through the small amount of pin and trace resistance. Connecting the +Sense (pin
5) and –Sense (pin 6) pins to the respective positive and ground reference of the load terminals improves the
load regulation of the output voltage at the connection points.
With the sense pins connected at the load, the difference between the voltage measured directly between the VO
and GND pins, and that measured at the Sense pins, is the amount of IR drop being compensated by the
regulator. This should be limited to a maximum of 300mV.
If the remote sense feature is not used at the load, connect the +Sense pin to VO (pin4) and connect the –Sense
pin to the module GND (pin 3).
The remote sense feature is not designed to compensate for the forward drop of nonlinear or frequency
dependent components that may be placed in series with the converter output. Examples include OR-ing
diodes, filter inductors, ferrite beads, and fuses. When these components are enclosed by the remote sense
connection they are effectively placed inside the regulation control loop, which can adversely affect the
stability of the regulator.
Copyright 2006–2009, Texas Instruments Incorporated
23
Product Folder Link(s): PTH04T260W PTH04T261W
相关PDF资料 |
PDF描述 |
|---|---|
| PTH04T260WAST | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| PTH04T260WAS | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| PTH04T261WAZT | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| PTH04T261WAST | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| PTH05050YAZT | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
相关代理商/技术参数 |
参数描述 |
|---|---|
| PTH04T261WAZT | 功能描述:DC/DC转换器 3A 2.2V-5.5Vin Adj Pwr Module RoHS:否 制造商:Murata 产品: 输出功率: 输入电压范围:3.6 V to 5.5 V 输入电压（标称）: 输出端数量:1 输出电压（通道 1）:3.3 V 输出电流（通道 1）:600 mA 输出电压（通道 2）: 输出电流（通道 2）: 安装风格:SMD/SMT 封装 / 箱体尺寸: |
| PTH05000 WAZ | 制造商:Texas Instruments 功能描述: |
| PTH05000W | 制造商:未知厂家 制造商全称:未知厂家 功能描述:6 A. 5-V Input Wide-Output Adjust Plug-in Power Module |
| PTH05000WAD | 功能描述:DC/DC转换器 6A 5VInput Wide-Out Adj Plug-in Pwr Mod RoHS:否 制造商:Murata 产品: 输出功率: 输入电压范围:3.6 V to 5.5 V 输入电压（标称）: 输出端数量:1 输出电压（通道 1）:3.3 V 输出电流（通道 1）:600 mA 输出电压（通道 2）: 输出电流（通道 2）: 安装风格:SMD/SMT 封装 / 箱体尺寸: |
| PTH05000WAH | 功能描述:DC/DC转换器 6A 5VInput Wide-Out Adj Plug-in Pwr Mod RoHS:否 制造商:Murata 产品: 输出功率: 输入电压范围:3.6 V to 5.5 V 输入电压（标称）: 输出端数量:1 输出电压（通道 1）:3.3 V 输出电流（通道 1）:600 mA 输出电压（通道 2）: 输出电流（通道 2）: 安装风格:SMD/SMT 封装 / 箱体尺寸: |
发布紧急采购，3分钟左右您将得到回复。