參數(shù)資料
型號(hào)： PTH04T240FAS
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： DIP-11
文件頁(yè)數(shù)： 13/35頁(yè)
文件大小： 3835K
代理商： PTH04T240FAS
Soft-Start Power Up
V
I
GND
PTH04T240F
3
2
C
I
4
+
GND
UDG-08162
V
I
Track
10
V
I (2 V/div)
V
O (500 mV/div)
I
I (1 A/div)
T - Time - 4 ms/div
SLTS293A – DECEMBER 2008 – REVISED MARCH 2009 ............................................................................................................................................... www.ti.com
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
pin should be directly connected to the input voltage, VI (see Figure 17).
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
5 ms–15 ms) before allowing the output voltage to rise.
The output then progressively rises to the module’s setpoint voltage. Figure 18 shows the soft-start power-up
characteristic of the PTH04T240F operating from a 5-V input bus and configured for a 1.8-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 30 ms.
Figure 17. Defeating the Auto-Track Function
Figure 18. Power-Up Waveform
20
Copyright 2008–2009, Texas Instruments Incorporated
Product Folder Link(s): PTH04T240F
相關(guān)PDF資料
PDF描述
PTH04T240FAZ 1-OUTPUT DC-DC REG PWR SUPPLY MODULE
PTH04T240FAST 1-OUTPUT DC-DC REG PWR SUPPLY MODULE
PTH04T240WAD 1-OUTPUT DC-DC REG PWR SUPPLY MODULE
PTH04T241WAZ 1-OUTPUT DC-DC REG PWR SUPPLY MODULE
PTH04T241WAST 1-OUTPUT DC-DC REG PWR SUPPLY MODULE
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PTH04T240FAST 功能描述:DC/DC轉(zhuǎn)換器 10A,2.2V-5.5V Inp Pwr Mod 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:
PTH04T240FAZ 功能描述:DC/DC轉(zhuǎn)換器 10A,2.2V-5.5V Inp Pwr Mod 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:
PTH04T240FAZT 功能描述:DC/DC轉(zhuǎn)換器 10A,2.2V-5.5V Inp Pwr Mod 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:
PTH04T240W 制造商:TI 制造商全稱:Texas Instruments 功能描述:10-A, 2.2-V to 5.5-V INPUT, NON-ISOLATED, WIDE-OUTPUT, ADJUSTABLE POWER MODULE WITH TURBOTRANS⑩
PTH04T240WAD 功能描述:DC/DC轉(zhuǎn)換器 10-A 2.2V to 5.5V Adj Pwr Mod 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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