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參數(shù)資料
| 型號： | PTEA404120N2AS |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT 50 W DC-DC REG PWR SUPPLY MODULE |
| 封裝： | ONE-EIGHTH BRICK PACKAGE-8 |
| 文件頁數(shù)： | 10/12頁 |
| 文件大?。?/td> | 151K |
| 代理商： | PTEA404120N2AS |
www.ti.com
Differential Remote Sense
Using the Remote On/Off Function on the PTEA404120A DC/DC Converter
Negative Output Enable (NEN)
SLTS274 – DECEMBER 2006
The remote sense pins allows the converter to precisely regulate the DC output voltage at a remote location.
This might be a power plane on an inner layer of the host PCB. Connecting Sense(+) directly to +VO, and
Sense(–) to –VO will improve output voltage accuracy. In the event that the sense pins are left open-circuit, an
internal 10-
resistor between each sense pin and its corresponding output prevents an excessive rise in the
output voltage. For practical reasons, the amount of IR voltage compensation should be limited to 0.5 V
maximum.
The remote sense feature is designed to compensate for limited amounts of IR voltage drop. It is not intended to
compensate for the forward drop of a non-linear or frequency dependent components that may be placed in
series with the converter output. Examples of such components include OR-ing diodes, filter inductors, ferrite
beads, and fuses. Enclosing these components with the remote sense connections effectively places them
inside the regulation control loop, which can affect the stability of the regulator.
For applications requiring output voltage On/Off control, the PTEA404120A DC/DC converter incorporate a
Remote On/Off control (pin 2). This feature can be used to switch the module off without removing the applied
input source voltage. When placed in the Off state, the standby current drawn from the input source is typically
reduced to 3 mA.
Models using the negative enable option, the Remote On/Off (pin 2) control must be driven to a logic low voltage
for the converter to produce an output. This is accomplished by either permanently connecting pin 2 to –VI (pin
3), or driving it low with an external control signal. Table 1 shows the input requirements of pin 2 for those
modules with the NEN option.
Table 1. On/Off Control Requirements
for Negative Enable
PARAMETER
MIN
TYP
MAX
UNITS
VIH
Enable
2.4
20
V
VIL
Disable
–0.2
0.8
Vo/c
Open-Circuit
9
15
II
Pin 2 at –VI
–0.75
mA
7
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| PTEA404120N2AZ | 制造商:TI 制造商全稱:Texas Instruments 功能描述:50-W, 48-V INPUT, 12-V OUTPUT, ISOLATED DC/DC CONVERTER |
| PTEA404120P2AD | 功能描述:DC/DC轉(zhuǎn)換器 50-W 48-V Input 12-V Output Iso RoHS:否 制造商:Murata 產(chǎn)品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標稱）: 輸出端數(shù)量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風格:SMD/SMT 封裝 / 箱體尺寸: |
| PTEA404120P2AS | 制造商:TI 制造商全稱:Texas Instruments 功能描述:50-W, 48-V INPUT, 12-V OUTPUT, ISOLATED DC/DC CONVERTER |
| PTEA404120P2AZ | 制造商:TI 制造商全稱:Texas Instruments 功能描述:50-W, 48-V INPUT, 12-V OUTPUT, ISOLATED DC/DC CONVERTER |
| PTEA415050 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:15-A, 48-V INPUT, 5-V OUTPUT, ISOLATED, 1/8th BRICK DC/DC CONVERTER |
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