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參數資料
| 型號： | TPS40009DGQRG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩壓器 |
| 英文描述： | SWITCHING CONTROLLER, 700 kHz SWITCHING FREQ-MAX, PDSO10 |
| 封裝： | 3.05 X 4.98 MM, GREEN, PLASTIC, MSOP-10 |
| 文件頁數： | 5/28頁 |
| 文件大小： | 677K |
| 代理商： | TPS40009DGQRG4 |
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TPS40007
TPS40009
SLUS589B NOVEMBER 2003 REVISED FEBRUARY 2005
13
www.ti.com
APPLICATION INFORMATION
Figure 8 shows startup waveforms of a 1.2-V VOUT voltage under different pre-bias scenarios. The first trace
is when the output voltage starts with zero prebias. The second and third traces, respectively, the pre-bias
levels are 0.5 V and 1.0 V.
t Time 2
s/div
VHDRV
VLDRV
Figure 7.
MOSFET Drivers at Beginning of Soft-Start
t Time 500
s/div
Figure 8.
Startup Waveforms
VIN = 5 V
VOUT = 1.2 V
(200 mV/div)
PREBIAS = 0 V
PREBIAS = 0.5 V
PREBIAS = 1 V
The recommended VOUT voltage pre-bias range is less than or equal to 90% of final regulation. That is, a
pre-bias level between 90% and 100% of final regulation could lead to sinking the pre-bias supply. If the VOUT
voltage is initially set to higher than 100% of final regulation, the controller forces sinking current at the end of
soft-start in order to bring the output quickly into regulation.
The following pages include design ideas for a few applications. For more ideas, detailed design information,
and helpful hints, visit the TPS40000 resources at http://power.ti.com.
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相關代理商/技術參數 |
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| TPS40009EVM-001 | 功能描述:電源管理IC開發工具 TPS40009-001 Eval Mod RoHS:否 制造商:Maxim Integrated 產品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| TPS40020 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:ENHANCED LOW INPUT VOLTAGE MODE SYNCHRONOUS BUCK CONTROLLER |
| TPS40020PWP | 功能描述:DC/DC 開關控制器 Enhanced Low Input RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| TPS40020PWPG4 | 功能描述:DC/DC 開關控制器 Enh Lo Input Freq Sync. Buck Cntrlr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| TPS40020PWPR | 功能描述:DC/DC 開關控制器 Enh Lo Input Freq Sync. Buck Cntrlr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
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