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參數(shù)資料
| 型號： | TPS40192DRCTG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING CONTROLLER, 700 kHz SWITCHING FREQ-MAX, PDSO10 |
| 封裝： | 3 X 3 MM, GREEN, PLASTIC, SON-10 |
| 文件頁數(shù)： | 5/38頁 |
| 文件大?。?/td> | 707K |
| 代理商： | TPS40192DRCTG4 |
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V
ENABLE
V
COMP
V
OUT
SC Threshold
Configured
(1 ms)
Soft Start Time (4 ms)
Compensation
Network Zeroed
(1 ms)
UDG-06062
www.ti.com
SLUS719C – MARCH 2007 – REVISED AUGUST 2010
Startup Sequence and Timing
The TPS40192/3 startup sequence is as follows. After input power is applied, the 5-V onboard regulator comes
up. Once this regulator comes up, the device goes through a period where it samples the impedance at the
COMP pin and determines the short circuit protection threshold voltage, by placing 400 mV on the COMP pin for
approximately 1 ms. During this time, the current is measured and compared against internal thresholds to select
the short circuit protection threshold. After this, the COMP pin is brought low for 1 ms. This ensures that the
feedback loop is preconditioned at startup and no sudden output rise occurs at the output of the converter when
the converter is allowed to start switching. After these initial two milliseconds, the internal soft-start circuitry is
engaged and the converter is allowed to start. See Figure 13.
Figure 13. Startup Sequence
Copyright 2007–2010, Texas Instruments Incorporated
13
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| TPS40192EVM-001 | 功能描述:電源管理IC開發(fā)工具 TPS40192 Evaluation Module RoHS:否 制造商:Maxim Integrated 產(chǎn)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 |
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