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參數資料
| 型號： | TPS51317RGBT |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩壓器 |
| 英文描述： | SWITCHING REGULATOR, 1500 kHz SWITCHING FREQ-MAX, PQCC20 |
| 封裝： | 4 X 3.50 MM, GREEN, PLASTIC, QFN-20 |
| 文件頁數： | 14/28頁 |
| 文件大小： | 1000K |
| 代理商： | TPS51317RGBT |
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SLUSAH9
– MARCH 2011
Step Eight
Select decoupling and peripheral components.
For TPS51317 peripheral capacitors use the following minimum values of ceramic capacitance. X5R or better
temperature coefficient is recommended. Tighter tolerances and higher voltage ratings are always appropriate.
V5IN decoupling
≥ 22 F, ≥ 10 V
VREF decoupling 0.22
F to 1 F, ≥ 4 V
Bootstrap capacitors
≥ 0.1 F, ≥ 10 V
Pull-up resistors on PGOOD, 100 k
Ω
Layout Considerations
Good layout is essential for stable power supply operation. Follow these guidelines for an efficient PCB layout.
Connect PGND pins (or at least one of the pins) to the thermal PAD underneath the device. Also connect
GND pin to the thermal PAD underneath the device. Use four vias to connect the thermal pad to internal
ground planes.
Place VIN, V5IN and 2VREF decoupling capacitors as close to the device as possible.
Use wide traces for the VIN, VOUT, PGND and SW pins. These nodes carry high current and also serve as
heat sinks.
Place feedback and compensation components as close to the device as possible.
Keep COMP analog signal away from noisy signals (SW, BST).
Copyright
2011, Texas Instruments Incorporated
21
Product Folder Link(s): TPS51317
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相關代理商/技術參數 |
參數描述 |
|---|---|
| TPS51362RVER | 制造商:Texas Instruments 功能描述:22V INPUT, 10A INTEGRATED FET 制造商:Texas Instruments 功能描述:IC REG BUCK SYNC ADJ 10A 28VQFN |
| TPS51362RVET | 制造商:Texas Instruments 功能描述:22V INPUT, 10A INTEGRATED FET 制造商:Texas Instruments 功能描述:IC REG BUCK SYNC ADJ 10A 28VQFN |
| TPS51363 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:22-V Input, 8-A or 10-A Converter With Integrated FET |
| TPS51363RVER | 制造商:Texas Instruments 功能描述:Conv DC-DC Single Step Down 3V to 22V 28-Pin VQFN EP T/R 制造商:Texas Instruments 功能描述:IC REG BCK SYNC ADJ 10/8A 28VQFN |
| TPS51363RVET | 制造商:Texas Instruments 功能描述:Conv DC-DC Single Step Down 3V to 22V 28-Pin VQFN EP T/R 制造商:Texas Instruments 功能描述:IC REG BCK SYNC ADJ 10/8A 28VQFN |
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