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參數(shù)資料
| 型號： | PTH08T220WAST |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| 封裝： | PLASTIC, DIP-11 |
| 文件頁數(shù)： | 16/38頁 |
| 文件大小： | 1290K |
| 代理商： | PTH08T220WAST |
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Soft-Start Power Up
10
Track
GND
3,4
VI
CI
PTH08T220W/221W
2
t Time 4ms/div
VO (2V/div)
V (5V/div)
I
II (2 A/div)
www.ti.com................................................................................................................................................... SLTS252K – NOVEMBER 2005 – REVISED JUNE 2009
The Auto-Track feature allows the power-up of multiple PTH/PTV modules to be directly controlled from the
Track pin. However in a stand-alone configuration, or when the Auto-Track feature is not being used, the Track
Figure 22. Defeating the Auto-Track Function
When the Track pin is connected to the input voltage the Auto-Track function is permanently disengaged. This
allows the module to power up entirely under the control of its internal soft-start circuitry. When power up is
under soft-start control, the output voltage rises to the set-point at a quicker and more linear rate.
From the moment a valid input voltage is applied, the soft-start control introduces a short time delay (typically
2 ms–10 ms) before allowing the output voltage to rise.
Figure 23. Power-Up Waveform
The output then progressively rises to the module’s setpoint voltage. Figure 23 shows the soft-start power-up
characteristic of the PTH08T220/221W operating from a 12-V input bus and configured for a 3.3-V output. The
waveforms were measured with a 10-A constant current load and the Auto-Track feature disabled. The initial rise
in input current when the input voltage first starts to rise is the charge current drawn by the input capacitors.
Power-up is complete within 15 ms.
Copyright 2005–2009, Texas Instruments Incorporated
23
Product Folder Link(s): PTH08T220W PTH08T221W
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PTH08T220WAZ | 功能描述:DC/DC轉(zhuǎn)換器 16A 4.5-14V-Input Wide-Out Adj Pwr Mdl 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: |
| PTH08T220WAZ | 制造商:Texas Instruments 功能描述:DC/DC Converter (DC-DC) / Switching Regu |
| PTH08T220WAZT | 功能描述:DC/DC轉(zhuǎn)換器 16A 4.5-14V-Input Wide-Out Adj Pwr Mdl 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: |
| PTH08T221W | 制造商:TI 制造商全稱:Texas Instruments 功能描述:16-A, 4.5-V to 14-V INPUT, NON-ISOLATED, WIDE-OUTPUT, ADJUSTABLE POWER MODULE WITH TurboTrans |
| PTH08T221WAD | 功能描述:DC/DC轉(zhuǎn)換器 16A 4.5V to 14V Inp Ceramic Cap Version 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: |
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