- 您现在的位置：买卖IC网 > PDF目录69254 > PTH08T231WAZ (TEXAS INSTRUMENTS INC) 1-OUTPUT DC-DC REG PWR SUPPLY MODULE PDF资料下载
参数资料
| 型号： | PTH08T231WAZ |
| 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 PACKAGE-10 |
| 文件页数： | 18/39页 |
| 文件大小： | 1281K |
| 代理商： | PTH08T231WAZ |
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页当前第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页第37页第38页第39页
PTH08T230W
GND
3
10
Q1
BSS138
1=Inhibit
Inhibit/
UVLO
C
I
V
I
V
I
2
t-Time=4ms/div
I (1 A/div)
I
V
(2V/div)
O
V
(2V/div)
INH
www.ti.com
SLTS265K – NOVEMBER 2005 – REVISED JUNE 2010
Output On/Off Inhibit
For applications requiring output voltage on/off control, the PTH08T230/231W incorporates an output Inhibit
control pin. The inhibit feature can be used wherever there is a requirement for the output voltage from the
regulator to be turned off.
The power modules function normally when the Inhibit pin is left open-circuit, providing a regulated output
whenever a valid source voltage is connected to VI with respect to GND.
Figure 22 shows the typical application of the inhibit function. Note the discrete transistor (Q1). The Inhibit input
has its own internal pull-up. An external pull-up should never be connected to the inhibit pin. The input is not
compatible with TTL logic devices. An open-collector (or open-drain) discrete transistor is recommended for
control.
Figure 22. On/Off Inhibit Control Circuit
Figure 23. Power-Up Response from Inhibit Control
Turning Q1 on applies a low voltage to the Inhibit control pin and disables the output of the module. If Q1 is then
turned off, the module executes a soft-start power-up sequence. A regulated output voltage is produced within 15
ms. Figure 23 shows the typical rise in both the output voltage and input current, following the turn-off of Q1. The
turn off of Q1 corresponds to the rise in the waveform, VINH. The waveforms were measured with a 6-A constant
current load.
Remote Sense
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 300 mV.
If the remote sense feature is not used at the load, connect the +Sense pin to VO (pin 4) 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 2005–2010, Texas Instruments Incorporated
25
Product Folder Link(s): PTH08T230W PTH08T231W
相关PDF资料 |
PDF描述 |
|---|---|
| PTH08T230WAST | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| PTH08T230WAS | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| PTH08T230WAD | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| PTH08T231WAZT | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| PTH08T240FAH | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
相关代理商/技术参数 |
参数描述 |
|---|---|
| PTH08T231WAZT | 功能描述:DC/DC转换器 6A 4.5V-14Vin Cer Cap 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: |
| PTH08T240F | 制造商:TI 制造商全称:Texas Instruments 功能描述:10-A, 4.5-V to 14-V INPUT, NON-ISOLATED POWER MODULE FOR 3-GHz DSP SYSTEMS |
| PTH08T240F_08 | 制造商:TI 制造商全称:Texas Instruments 功能描述:10-A, 4.5-V to 14-V INPUT, NON-ISOLATED POWER MODULE FOR 3-GHz DSP SYSTEMS |
| PTH08T240FAD | 功能描述:DC/DC转换器 10-A 4.5-14V Input 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: |
| PTH08T240FAS | 功能描述:DC/DC转换器 10-A 4.5-14V Input 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: |
发布紧急采购，3分钟左右您将得到回复。