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參數(shù)資料
| 型號： | TPS54900PWG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 模擬信號調(diào)理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PDSO16 |
| 封裝： | GREEN, PLASTIC, TSSOP-16 |
| 文件頁數(shù)： | 3/17頁 |
| 文件大?。?/td> | 318K |
| 代理商： | TPS54900PWG4 |
TPS54900
SLVS405 OCTOBER 2001
11
www.ti.com
APPLICATION INFORMATION
component selection
Components were selected to maximize efficiency while maintaining acceptable area, stability, and output
noise. For instance in choosing the free wheeling diodes, both junctions in the SOT23 package are used in
parallel to save up to 6 mW per channel. The recommended output filter and internal compensation were
selected with the expectation of a 3.3-
H, 15-F post filter located at the load (line driver supply input). Use of
one or more ceramic capacitors in place of the 10-
F tantalum for the output filter can reduce board area at the
cost of increased noise and reduced stability margin. Inductors with smaller mechanical dimensions than those
from GCI or Bourns, such as the Coilcraft, reduce required board area and decrease conversion efficiency up
to 4%. Use of nonshielded inductors may increase efficiency, but add risk of EMI. System level testing should
be performed in qualifying component and layout decisions.
layout considerations
Two portions of the layout are critical and deserve close attention. First, the high frequency input bypass
capacitors (C10 and C11 in the eight channel application circuit diagram) must be placed as close as possible
and routed directly to the TPS54900 VIN and GND pins to minimize trace inductance.
Second, the free wheeling diodes (D18 in the eight channel application circuit diagram) must also be placed
as close as possible and routed directly to the TPS54900 LX_ and GND pins. Placing the diodes on the opposite
side of the board as the TPS54900, immediately opposite the TPS54900, facilitates low impedance routing of
the diodes to the appropriate TPS54900 pins. The EVM layout uses this approach.
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| TPS54900PWR | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 Prog 4-Ch Step Dwn DC/DC Converter RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| TPS54900PWRG4 | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 Prog 4-Ch Step Dwn DC/DC Converter RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| TPS54910 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:3-V TO 4-V INPUT, 9-A OUTPUT SYNCHRONOUS BUCK PWM SWITCHER WITH INTEGRATED FETs (SWIFT) |
| TPS54910EVM-213 | 功能描述:電源管理IC開發(fā)工具 9-A 3-4 Vin DC/DC Converter 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 |
| TPS54910PWP | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 3.3V Inp 9A Sync Buck Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
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