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參數(shù)資料
| 型號(hào)： | PTB48501AAZ |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類(lèi)： | 電源模塊 |
| 英文描述： | 2-OUTPUT 32.4 W DC-DC REG PWR SUPPLY MODULE |
| 封裝： | ROHS COMPLIANT PACKAGE-10 |
| 文件頁(yè)數(shù)： | 15/18頁(yè) |
| 文件大?。?/td> | 400K |
| 代理商： | PTB48501AAZ |
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DEVICE INFORMATION
SLTS218C – SEPTEMBER 2003 – REVISED AUGUST 2006
TERMINAL FUNCTIONS
TERMINAL
DESCRIPTION
NAME
NO.
The positive input supply for the module with respect to –VI. When powering the module from a –48 V telecom
+VI(1)
1
central office supply, this input is connected to the primary system ground.
The negative input supply for the module, and the 0 VDC reference for the Enable, EN Out, and Sync Out
–VI
5
signals. When the module is powered from a +48-V supply, this input is connected to the 48-V Return.
VO1
10
The higher regulated power output voltage, which is referenced to the COM node.
VO2
6
The lower regulated power output voltage, which is referenced to the COM node.
The secondary return reference for the module's two regulated output voltages. It is dc isolated from the input
COM
7
supply pins.
Using a single resistor, this pin allows VO2 to be adjusted higher or lower than the preset value. If not used,
VO2 Adjust
9
this pin should be left open circuit.
This is an open-collector (open-drain) positive logic input that enables the module output. This pin is
Enable(2)
3
referenced to –VI. A logic 0 at this pin disables the module's outputs, and a high impedance enables the
outputs. If not used the pin should be left unconnected.
This open-collector output may be used to enable the output of other DC/DC converters in applications where
the power-up sequence of the related voltages must be precisely controlled. The output is used principally to
EN Out
4
control the startup up of a PTB4851xx module when powering ADSL circuits based on the AC7 chipset. The
signal is referenced to –VI, and is active low. It is initially off (high impedance), and turns on when the output
voltage, VO1, has risen to its nominal set-point voltage.
The signal generated by this pin is designed to be used exclusively with the PTB48510 in AC7 ADSL
Sync Out
2
applications. When the Sync Out of this converter is connected directly to the Sync In pin of the PTB48510,
both modules will operate at the same switch conversion frequency.
(POR: Available to PTB48500 and PTB48501 only.) This pin produces an active-low power-on reset signal that
may be used to reset logic circuitry. The output is set low during power up just as the output voltage from VO1
POR(3)/COM(4)
8
starts to rise. It remains low for 10 ms after the voltage at VO1 has reached its nominal set-point voltage. This
signal is referenced to the COM node, and has a 3.3-k
internal pull-up resistor to V
O1.
(1)
Shaded functions indicate signals that are referenced to –VI.
(2)
Denotes positive logic: Open = Normal operation, –VI = Outputs Off
(3)
Denotes negative logic: High = Normal operation, Low = Reset
(4)
This pin is COM on the PTB48502.
6
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| PTB48501AAS | 2-OUTPUT 32.4 W DC-DC REG PWR SUPPLY MODULE |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PTB48502 | 制造商:TI 制造商全稱(chēng):Texas Instruments 功能描述:DUAL-OUTPUT, 48-V INPUT ISOLATED DC/DC CONVERTER for xDSL |
| PTB48502AAH | 功能描述:DC/DC轉(zhuǎn)換器 3.3/1.2V 45W Out 48V Inp 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(chēng)）: 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: |
| PTB48502AAS | 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 3.3/1.2V 45W Out 48V Inp DC/DC Converter RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)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 |
| PTB48502AAZ | 功能描述:DC/DC轉(zhuǎn)換器 3.3/1.2V 45W Out 48V Inp 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(chēng)）: 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: |
| PTB48510 | 制造商:TI 制造商全稱(chēng):Texas Instruments 功能描述:Dual Complementary-Output DC/DC Converter for DSL |
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