WMSIC Electronic Components

TI TPS548A28RWWR

ModelTPS548A28RWWR
PackageVQFN-21-HR(3x4)
BrandTI
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
TI(Texas Instruments) TPS548A28RWWR
Type
TI
Minimum package
3000 个

Technical parameters

Electronic Component
Electronic Component
Electronic Component
TI(Texas Instruments)
Electronic Component
TPS548A28RWWR
Electronic Component
1
Package
VQFN-21-HR(3x4)
Electronic Component
DC-DC Power Supply IC
Electronic Component
0.51g
Electronic Component
1
Type
Electronic Component
Synchronous
Electronic Component
Electronic Component
BM0230006600
Operating Temperature
40℃~+125℃@(TJ)
Operating Voltage
2.7V~16V
Switching Frequency
1MHz
Electronic Component
Electronic Component
Output Voltage
600mV~5.5V

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

TPS548A28RWWR 产品概述

一、概述

TPS548A28RWWR 是德州仪器(TI)推出的一款高集成度降压型(Buck)DC-DC转换器,专为中大功率点应用设计。该器件支持宽工作电压范围 2.7V 至 16V,输出电压可调 0.6V 至 5.5V,最大输出电流 15A,开关频率为 1MHz,采用同步整流并内置功率开关。器件封装为 VQFN-21-HR (3 x 4 mm),工作结温范围为 -40°C 到 +125°C,静态电流(Iq)约为 680 µA,适合对功率密度、效率与成本有平衡要求的电源设计。

二、主要特性(要点)

  • 功能类型:降压型(Buck)开关稳压器
  • 输入电压:2.7V ~ 16V(适用于多种电源轨与电池供电场景)
  • 输出电压:可调 0.6V ~ 5.5V(支持低压核心和高压外围)
  • 输出电流:最大 15A(适用于中大电流点)
  • 开关频率:1MHz(高频小体积元件,利于尺寸优化)
  • 同步整流:支持(内部同步MOSFET,减少整流损耗,提高效率)
  • 开关管:内置(降低设计复杂度和BOM)
  • 静态电流:约 680 µA(待机功耗较低)
  • 输出通道数:单通道
  • 封装:VQFN-21-HR (3x4 mm)(小型化、热性能需关注)
  • 工作温度:-40°C ~ +125°C (@TJ)

三、优势与适用场景

  • 高功率密度:1MHz 开关频率配合内置开关管,使设计可采用更小的电感与滤波电容,从而实现紧凑电源模块,适合空间受限的板级应用。
  • 高效率:同步整流结构在较高电流下可显著降低导通损耗,适合要求高效率的系统(例如通信设备、工业控制、电源分配)。
  • 宽输入范围:可直接兼容单节至多节电池或常见中高压分布式电源,适用于便携式设备、车载电子(但车规级要求需另行确认)与工业系统。
  • 可调输出:0.6V 起的可调范围覆盖 SoC/FPGA/ASIC 等多种核心电压需求,灵活性高。
  • 小封装:VQFN-21-HR 的小尺寸适合板端密集布局,但需良好散热设计以释放器件热量。

典型应用:

  • 嵌入式处理器/FPGA/ASIC 的主供电
  • 通信与服务器模块的点位调压
  • 工业控制与仪器仪表电源
  • 电池供电的高效率降压方案

四、设计与布局建议

  • 热管理:VQFN-21-HR 封装需良好底部焊盘与多通孔(via)散热路径,将热量有效导出至 PCB 内层或底层铜箔。高输出电流工作时应考虑器件热降额。
  • 布局要点:输入侧电容应尽量靠近器件 VIN 与 GND 引脚放置,开关节点(SW)走线短且尽量离敏感模拟节点远离,以降低 EMI。输出电感与电容应靠近 SW 与 VOUT 节点以减少环路面积。
  • 输入/输出滤波:选择低 ESR 的输入和输出电容以优化启动性能与减小纹波;在高电流应用下注意电容的纹波电流能力与热特性。
  • 电感选型:依据最大输出电流和工作频率选取额定电流与低 DCR 的电感,避免磁芯饱和并使温升可控。
  • 稳定性与补偿:器件内部或外部的环路补偿方式会影响瞬态响应,设计时参考 TI 官方参考电路与应用手册进行补偿与参数匹配。

五、系统注意事项

  • 输入电压留有裕量:确保输入电源在瞬态与起动过程中不会低于器件最低 VIN,尤其在电池掉电场景。
  • 热降额:在高 ambient 温度或受限散热条件下,注意降低输出电流或增加散热措施以保持器件在安全结温范围内。
  • EMC 合规:1MHz 开关频率虽有利于体积,但仍需做好滤波与地平面设计以满足系统 EMI 要求。
  • 参考资料:在实际产品开发中应参考 TI 的详细数据手册、参考设计和布局指南,以获得稳定可靠的输出与最佳效率。

TPS548A28RWWR 以其高集成度、宽输入范围、15A 输出能力和 1MHz 高频运行,适合对体积、效率与成本有综合要求的降压电源方案。合理的版图与热设计能够充分发挥器件性能,满足多种工业与消费类电源应用需求。

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