參數(shù)資料
型號(hào)： PTH12030LAH
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： ROHS COMPLIANT PACKAGE-13
文件頁(yè)數(shù)： 9/26頁(yè)
文件大?。?/td> 794K
代理商： PTH12030LAH
PREBIAS STARTUP CAPABILITY
VI (5 V/div)
t Time 5 ms/div
Startup
Period
UVLO Threshold
VO (1 V/div)
www.ti.com .................................................................................................................................................... SLTS211H – MAY 2003 – REVISED DECEMBER 2008
Notes on Use of Auto-Track
TM
1. The Track pin voltage must be allowed to rise above the module set-point voltage before the module
regulates at its adjusted set-point voltage.
2. The Auto-Track function tracks almost any voltage ramp during power up, and is compatible with ramp
speeds of up to 1 V/ms.
3. The absolute maximum voltage that may be applied to the Track pin is the input voltage VI.
4. The module cannot follow a voltage at its track control input until it has completed its soft-start initialization.
This takes about 40 ms from the time that a valid voltage has been applied to its input. During this period, it
is recommended that the Track pin be held at ground potential.
5. The Auto-Track function is disabled by connecting the Track pin to the input voltage (VI). When Auto-Track is
disabled, the output voltage rises at a quicker and more linear rate after input power has been applied.
The capability to start up into an output prebias condition is now available to all the 12-V input, PTH series of
power modules. (Note that this is a feature enhancement for the many of the W-suffix products).[1]
A prebias startup condition occurs as a result of an external voltage being present at the output of a power
module prior to its output becoming active. This often occurs in complex digital systems when current from
another power source is backfed through a dual-supply logic component, such as an FPGA or ASIC. Another
path might be via clamp diodes, sometimes used as part of a dual-supply power-up sequencing arrangement. A
prebias can cause problems with power modules that incorporate synchronous rectifiers. This is because under
most operating conditions, such modules can sink as well as source output current. The 12-V input PTH modules
all incorporate synchronous rectifiers, but will not sink current during startup, or whenever the Inhibit pin is held
low. Startup includes an initial delay (approximately 8 ms–15 ms), followed by the rise of the output voltage
under the control of the module’s internal soft-start mechanism; see Figure 18.
Figure 18. Startup Waveforms
Copyright 2003–2008, Texas Instruments Incorporated
17
Product Folder Link(s): PTH12030W/L
相關(guān)PDF資料
PDF描述
PTH12030WAS 1-OUTPUT DC-DC REG PWR SUPPLY MODULE
PTH12030LAST 1-OUTPUT DC-DC REG PWR SUPPLY MODULE
PTH12030LAZT 1-OUTPUT DC-DC REG PWR SUPPLY MODULE
PTH12030LAZ 1-OUTPUT DC-DC REG PWR SUPPLY MODULE
PTH12030LAS 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
PTH12030LAS 功能描述:DC/DC轉(zhuǎn)換器 0.8 to 1.8V 26A 12V Input WideAdj Module 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:
PTH12030LAST 功能描述:DC/DC轉(zhuǎn)換器 0.8 to 1.8V 26A 12V Input WideAdj Module 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:
PTH12030LAZ 功能描述:DC/DC轉(zhuǎn)換器 10.2-13.8Vin 1.8V26A 1.370" x1.120"x0.354 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:
PTH12030LAZT 功能描述:DC/DC轉(zhuǎn)換器 0.8 to 1.8V 26A 12V Input WideAdj Module 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:
PTH12030W 制造商:未知廠家 制造商全稱:未知廠家 功能描述:26 A. 12-V Input Wide-Output Adjust Plug-in Power Module
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