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TPS54673 启动过程中禁用吸入的低输入电压 6A 同步降压转换器

TPS54673 描述

As a member of the SWIFTTM family of dc/dc regulators, the TPS54673 low-input voltage high-output current synchronous buck PWM converter integrates all required active components. Included on the substrate with the listed features are a true, high performance, voltage error amplifier that enables maximum performance and flexibility in choosing the output filter L and C components; an under-voltage-lockout circuit to prevent start-up until the input voltage reaches 3 V; an internally or externally set slow-start circuit to limit in-rush currents; and a power good output useful for processor/logic reset, fault signaling, and supply sequencing.

For reliable power up in output precharge applications, the TPS54673 is designed to only source current during startup

TPS54373 TPS54673 TPS54873 TPS54973
Iout(Max)(A) 3 6 8 9
Vin(Min)(V) 3 3 4 3
Vin(Max)(V) 6 6 6 4
Vout(Min)(V) 0.9 0.9 0.9 0.9
Vout(Max)(V) 3.3 4.5 3.3 2.5
Iq(Typ)(mA) 6.2 11 11 11
Switching Frequency(Max)(kHz) 700 700 700 700
Switch Current Limit(Typ)(A) 4 7.2 9 11
Topology Buck Buck Buck Buck
Operating Temperature Range(°C) -40 to 85 -40 to 85 -40 to 85 -40 to 85
Pin/Package 20HTSSOP 28HTSSOP 28HTSSOP 28HTSSOP
Rating Catalog Catalog Catalog Catalog
Duty Cycle(Max)(%) 90 90 90 90
Regulated Outputs(#) 1 1 1 1
Thermal Shutdown yes yes yes yes
TPS54673 特性
TPS54673 芯片订购指南
器件 状态 温度 (oC) 价格(美元) 封装 | 引脚 封装数量 | 封装载体 丝印标记
TPS54673PWP ACTIVE -40 to 85 2.05 | 1ku HTSSOP (PWP) | 28 50 | TUBE TPS54673
TPS54673PWPG4 ACTIVE -40 to 85 2.05 | 1ku HTSSOP (PWP) | 28 50 | TUBE TPS54673
TPS54673PWPR ACTIVE -40 to 85 1.85 | 1ku HTSSOP (PWP) | 28 2000 | LARGE T&R TPS54673
TPS54673PWPRG4 ACTIVE -40 to 85 1.85 | 1ku HTSSOP (PWP) | 28 2000 | LARGE T&R TPS54673
TPS54673 质量与无铅数据
器件 环保计划* 铅/焊球涂层 MSL 等级/回流焊峰 环保信息与无铅 (Pb-free) DPPM / MTBF / FIT 率
TPS54673PWP Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR   TPS54673PWP
TPS54673PWPG4 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR TPS54673PWPG4 TPS54673PWPG4
TPS54673PWPR Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR   TPS54673PWPR
TPS54673PWPRG4 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR TPS54673PWPRG4 TPS54673PWPRG4
TPS54673 应用技术支持与电子电路设计开发资源下载
  1. TPS54673 数据资料 dataSheet 下载.PDF
  2. TI 德州仪器非隔离式开关 DC/DC 调节器选型与价格参考 . xls
  3. Dual MOSFET Driver (PDF 498 KB)
  4. 全面认识开关型电源中的BUCK-BOOST功率级 (Rev. A) (PDF 2206 KB)
  5. Understanding Boost Power Stages In Switchmode Power Supplies (PDF 149 KB)
  6. Understanding Buck Power Stages In Switchmode Power Supplies (PDF 173 KB)
  7. 标准线性产品交叉参考 (Rev. D) (PDF 1058 KB)
  8. 模数规格和性能特性术语表 (Rev. A) (PDF 1993 KB)
  9. 所选封装材料的热学和电学性质 (PDF 645 KB)
  10. 高速数据转换 (PDF 1967 KB)
TPS54673 相关工具
名称 型号 公司 工具/软件类型
6A,输入电压为 3.3/5V 且启动过程中可禁用吸入的 DC/DC 转换器 TPS54673EVM Texas Instruments 开发电路板/EVM
SwitcherPro(TM) 开关电源设计工具 SWITCHERPRO Texas Instruments 应用软件