- 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： | 9/36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页当前第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页第32页第33页第34页第35页第36页
TURBOTRANS
TurboTrans Technology
TurboTrans Selection
www.ti.com.................................................................................................................................................. SLTS273E – SEPTEMBER 2006 – REVISED JULY 2009
TurboTrans technology is a feature introduced in the T2 generation of the PTH/PTV family of power modules.
TurboTrans optimizes the transient response of the regulator with added external capacitance using a single
external resistor. Benefits of this technology include reduced output capacitance, minimized output voltage
deviation following a load transient, and enhanced stability when using ultra-low ESR output capacitors. The
amount of output capacitance required to meet a target output voltage deviation is reduced with TurboTrans
activated. Likewise, for a given amount of output capacitance, with TurboTrans engaged, the amplitude of the
voltage deviation following a load transient is reduced. Applications requiring tight transient voltage tolerances
and minimized capacitor footprint area benefits greatly from this technology.
Using TurboTrans requires connecting a resistor, RTT, between the +Sense pin (pin5) and the TurboTrans pin
(pin8). The value of the resistor directly corresponds to the amount of output capacitance required. All T2
products require a minimum value of output capacitance whether or not TurboTrans is used. For the
PTH04T260W, the minimum required capacitance is 200
F ceramic. When using TurboTrans, capacitors with a
capacitance × ESR product below 10,000
F×m are required. (Multiply the capacitance (in F) by the ESR (in
m
) to determine the capacitance × ESR product.) See the Capacitor Selection section of the datasheet for a
variety of capacitors that meet this criteria.
Figure 10 shows the amount of output capacitance required to meet a desired transient voltage deviation with
and without TurboTrans for several capacitor types; TypeA (e.g. ceramic), TypeB (e.g. polymer-tantalum), and
TypeC (e.g. OS-CON). To calculate the proper value of RTT, first determine the required transient voltage
deviation limits and magnitude of the transient load step. Next, determine what type of output capacitors is used.
(If more than one type of output capacitor is used, select the capacitor type that makes up the majority of the
total output capacitance). Knowing this information, use the chart in Figure 10 that corresponds to the capacitor
type selected. To use the chart, begin by dividing the maximum voltage deviation limit (in mV) by the magnitude
of the load step (in Amps). This gives a mV/A value. Find this value on the Y-axis of the appropriate chart. Read
across the graph to the 'With TurboTrans' plot. From this point, read down to the X-axis which lists the minimum
required capacitance, CO, to meet that transient voltage deviation. The required RTT resistor value can then be
calculated using the equation or selected from the TurboTrans table. The TurboTrans tables include both the
required output capacitance and the corresponding RTT values to meet several values of transient voltage
deviation for 25%(0.75A), 50%(1.5A), and 75%(2.25A) output load steps.
The chart can also be used to determine the achievable transient voltage deviation for a given amount of output
capacitance. Selecting the amount of output capacitance along the X-axis, reading up to the 'With TurboTrans'
curve, and then over to the Y-axis, gives the transient voltage deviation limit for that value of output capacitance.
The required RTT resistor value can be calculated using the equation or selected from the TurboTrans table.
As an example, consider a 5-V application requiring a 30mV deviation during a 1.5-A, 50% load transient. A
majority of 330
F, 10m ouput capacitors are used. Use the Type B capacitor chart, Figure 11. Dividing 30mV
by 1.5A gives 20mV/A transient voltage deviation per amp of transient load step. Select 20mV/A on the Y-axis
and read across to the 'With TurboTrans' plot. Following this point down to the X-axis gives us a minimum
required output capacitance of approximately 570
F. The required R
TT resistor value for 570F can then be
To see the benefit of TurboTrans, follow the 20mV/A marking across to the 'Without TurboTrans' plot. Following
that point down shows that you would need a minimum of 1200
F of output capacitance to meet the same
transient deviation limit. This is the benefit of TurboTrans. A typical TurboTrans schematic is shown in Figure 16.
Copyright 2006–2009, Texas Instruments Incorporated
17
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。