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| 型号： | TPS54900PWR |
| 厂商： | Texas Instruments |
| 文件页数： | 11/16页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK ADJ .1A QUAD 16TSSOP |
| 标准包装： | 2,000 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 4 |
| 输出电压： | 7.5 V ~ 13.1 V |
| 输入电压： | 15V |
| PWM 型： | 电压模式 |
| 频率 - 开关： | 450kHz |
| 电流 - 输出： | 100mA |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-TSSOP（0.173"，4.40mm 宽） |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 16-TSSOP |
| 配用： | 296-17304-ND - EVAL MODULE FOR XILINX FPGA |
TPS54900
SLVS405 ? OCTOBER 2001
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 SOT?23 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- μ H, 15- μ F post filter located at the load (line driver supply input). Use of
one or more ceramic capacitors in place of the 10- μ 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 (D1?8 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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相关代理商/技术参数 |
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|---|---|
| TPS54900PWRG4 | 功能描述:开关变换器、稳压器与控制器 Prog 4-Ch Step Dwn DC/DC Converter RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| TPS54910 | 制造商:TI 制造商全称: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:电源管理IC开发工具 9-A 3-4 Vin DC/DC Converter RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| TPS54910PWP | 功能描述:直流/直流开关调节器 3.3V Inp 9A Sync Buck Converter RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| TPS54910PWP | 制造商:Texas Instruments 功能描述:IC's |
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