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參數(shù)資料
| 型號(hào)： | PTB48511AAS |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 電源模塊 |
| 英文描述： | 2-OUTPUT 65 W DC-DC REG PWR SUPPLY MODULE |
| 封裝： | DIP-8 |
| 文件頁數(shù)： | 2/17頁 |
| 文件大?。?/td> | 544K |
| 代理商： | PTB48511AAS |
www.ti.com
APPLICATION INFORMATION
ADJUSTING THE OUTPUT VOLTAGE OF THE PTB4851x SERIES OF DC/DC CONVERTERS
5
V
O1
6
V
OAdj
7
COM
8
V
O2
PTB48510
V
O2
UDG-07041
V
O1
R
1
Adjust Up
5
V
O1
6
V
OAdj
7
COM
8
V
O2
PTB48510
V
O2
UDG-07042
V
O1
R
2
Adjust Down
ADJUST RESISTOR CALCULATION
R
1
[Adjust Up] +
Vr Ro
2 Va * Vo
* Rs kW
(1)
R
2
[Adjust Down] +
Ro 2 Va * Vr
2 Vo * Va
* Rs kW
(2)
SLTS219F – FEBRUARY 2004 – REVISED MARCH 2007
The PTB48510 and PTB48511 DC/DC converters produce a balanced pair of complimentary output voltages.
They are identified VO1 and VO2, respectively. The magnitude of both output voltages can be adjusted together as
a pair, higher or lower, by up to ±10% of their nominal. The adjustment method uses a single external resistor.1
The value of the resistor determines the adjustment magnitude, and its placement determines whether the
magnitude is increased or decreased. The resistor values can be calculated using the appropriate formula (see
below). The formula constants are given in Table 1. The placement of each resistor is as follows.
Adjust Up: To increase the magnitude of both output voltages, place a resistor R1 between VO1Adj (pin 7) and
Adjust Down: To decrease the magnitude of both output voltages, add a resistor (R2), between VOAdj (pin 7)
Figure 16. Adjust Up Resistor Placement
Figure 17. Adjust Down Resistor Placement
The value of the adjust resistor is calculated using one of the following equations. Use the equation for R1 to
adjust up, or (R2) to adjust down.
Where:
VO = Magitude of the original VO1 or VO2
Va = Magnitude of the adjusted voltage
10
Copyright 2004–2007, Texas Instruments Incorporated
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參數(shù)描述 |
|---|---|
| PTB48511AAZ | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 65W+/- 5V Dual Comp Outp DC/DC Converter RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT |
| PTB48511B | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Dual Complementary-Output DC/DC Converter for DSL |
| PTB48511BAH | 功能描述:DC/DC轉(zhuǎn)換器 72W+/-12V Dual Comp Outp DC/DC Converter 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(biāo)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(fēng)格:SMD/SMT 封裝 / 箱體尺寸: |
| PTB48511BAS | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 72W+/-12V Dual Comp Outp DC/DC Converter RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT |
| PTB48511BAZ | 功能描述:DC/DC轉(zhuǎn)換器 72W+/-12V Dual Comp Outp DC/DC Converter 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(biāo)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(fēng)格:SMD/SMT 封裝 / 箱體尺寸: |
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