- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄69171 > PT4701C (TEXAS INSTRUMENTS INC) 4-OUTPUT 35 W DC-DC REG PWR SUPPLY MODULE PDF資料下載
參數(shù)資料
| 型號(hào)： | PT4701C |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 電源模塊 |
| 英文描述： | 4-OUTPUT 35 W DC-DC REG PWR SUPPLY MODULE |
| 封裝： | METAL, SIP-15/21 |
| 文件頁(yè)數(shù)： | 9/11頁(yè) |
| 文件大?。?/td> | 195K |
| 代理商： | PT4701C |
Application Notes
For technical support and more information, see inside back cover or visit www.ti.com
Adjusting the Output Voltages of the PT4701
Quad-Output DC/DC Converters
The PT4701 quad-output DC/DC converter produces
two pairs of balanced ±Vo complimentary output voltages.
The magnitude of each balanced pair of outputs may be
adjusted higher or lower by up to ±10 %. The adjustment
method uses a single external resistor 1, which adjusts the
magnitude of the respective +Vo and –Vo simultaneously.
The value of the resistor determines the magnitude of
adjustment, and the placement of the resistor determines the
direction of adjustment (increase or decrease). The resistor
values can be calculated using the appropriate formula
(see below). The formula constants are provided in
Table 3-2. Alternatively the resistor value may be selected
directly from Table 3-3 and Table 3-4, for ±Vo1 and ±Vo2
respectively. The placement of each resistor is as follows.
Adjust Up:
To increase the magnitude of the complimentary
output voltages, add a resistor R1 between the appropriate
±Vox Adj (‘±Vo1 Adj’ or ‘±Vo2 Adj’) and the -Vox voltage rail.
See Figure 3-1(a) and Table 3-1 for the resistor placement
and pin connections.
Figure 3-1b
PT4701
Calculation of Resistor Adjust Values
The adjust resistor value may also be calculated using an
equation. Note that the equation for R1 [Adjust Up] is
different to that for (R2) [Adjust Down].
R1 [Adjust Up]
=
Vr Ro
– Rs
k
2 (Va – Vo )
(R2) [Adjust Down]
=
Ro (2 Va – Vr ) – R
s
k
2 (Vo – Va )
Where: Vo = Original output voltage (±Vox)
Va = Adjusted output voltage (±Vax)
Vr = The reference voltage from Table 3-2
Ro = The resistance value in Table 3-2
Rs = The series resistance from Table 3-2
(R
2)
+Vo
x
±V
x Adj
+Vo
x
DC/DC
Module
#
# - See Table 3-1 for pin connections,
where ±Vo
x indicates ±Vo 1, or ±Vo 2
–Vo
x
–Vo
x
To adjust the
magnitude of a +V
o
& –V
o pair lower
COM
Figure 3-1a
R
1
To adjust the
magnitude of a +V
o
& –V
o pair higher
# - See Table 3-1 for pin connections,
where ±Vo
x indicates ±Vo 1, or ±Vo 2
+Vo
x
±V
x Adj
+Vo
x
DC/DC
Module
#
–Vo
x
–Vo
x
COM
Adjust Down:
To decrease the magnitude of the compli-
mentary output voltages, add a resistor (R2), between the
appropriate Vox Adj (Vo1 Adj or Vo2 Adj,) and the +Vox
voltage rail. See Figure 3-1(b) and Table 3-1 for the
resistor placement and pin connections.
Table 3-1; Adjust Resistor Pin Connections
To Adjust Up
To Adjust Down
Connect R1
Connect (R2)
from
to
from
to
±Vox Adj
–Vox
±Vox Adj
+Vox
±Vo1
17
16
17
14
±Vo2
21
20
21
18
Notes:
1. Use only a single 1 % (or better) tolerance resistor in
either the R1 or (R2) location to adjust a specific output.
Place the resistor as close to the ISR as possible.
2. Never connect capacitors to any of the ‘Vox Adj’ pins. Any
capacitance added to these control pins will affect the
stability of the respective regulated output.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PT4701N | 4-OUTPUT 35 W DC-DC REG PWR SUPPLY MODULE |
| PT4711C | 2-OUTPUT 45 W DC-DC REG PWR SUPPLY MODULE |
| PT4741A | 4-OUTPUT 70 W DC-DC REG PWR SUPPLY MODULE |
| PT4741N | 4-OUTPUT 70 W DC-DC REG PWR SUPPLY MODULE |
| PT4741C | 4-OUTPUT 70 W DC-DC REG PWR SUPPLY MODULE |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PT4701N | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 35W Quad-Outp 48V Inpt 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 |
| PT4711 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:45-W Dual-Output Isolated DC/DC Converter |
| PT4711A | 功能描述:DC/DC轉(zhuǎn)換器 45W Dual 15V Out 48V Inpt Iso DC/DC Cnvtr 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: |
| PT4711C | 功能描述:DC/DC轉(zhuǎn)換器 45W Dual 15V Out 48V Inpt Iso DC/DC Cnvtr 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: |
| PT4711N | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 45W Dual 15V Out 48V Inpt Iso DC/DC Cnvtr 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 |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。