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参数资料
| 型号： | PTB48510CAS |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 电源模块 |
| 英文描述： | 2-OUTPUT 66 W DC-DC REG PWR SUPPLY MODULE |
| 封装： | DIP-8 |
| 文件页数： | 2/17页 |
| 文件大小： | 544K |
| 代理商： | PTB48510CAS |
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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相关代理商/技术参数 |
参数描述 |
|---|---|
| PTB48510CAZ | 功能描述:DC/DC转换器 66W+/- 5V Dual Comp Outp DC/DC Converter 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: |
| PTB48511 | 制造商:TI 制造商全称:Texas Instruments 功能描述:Dual Complementary-Output DC/DC Converter for DSL |
| PTB48511A | 制造商:TI 制造商全称:Texas Instruments 功能描述:Dual Complementary-Output DC/DC Converter for DSL |
| PTB48511AAH | 功能描述:DC/DC转换器 65W+/- 5V Dual Comp Outp DC/DC Converter 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: |
| PTB48511AAS | 功能描述:DC/DC转换器 65W+/- 5V Dual Comp Outp DC/DC Converter 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: |
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