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TPS54311 具有 0.9V 输出的低输入电压 3A 同步降压转换器

	TPS54311
Iout(Max)(A)	3
Vin(Min)(V)	3
Vin(Max)(V)	6
Preset Vout(V)	0.9
Iq(Typ)(mA)	6.2
Switching Frequency(Max)(kHz)	700
Switch Current Limit(Typ)(A)	4
Topology	Buck
Pin/Package	20HTSSOP
Rating	Catalog
Duty Cycle(Max)(%)	90
Regulated Outputs(#)	1
Thermal Shutdown	Yes

TPS54311 描述

As members of the SWIFT family of dc/dc regulators, the TPS54311, TPS54312, TPS54313, TPS54314, TPS54315 and TPS54316 low-input-voltage high-output-current synchronous-buck PWM convertersintegrate all required active components. Included on the substrate with the listed features are a true, high performance, voltage error amplifier that provides fast response under transient conditions; an undervoltage-lockout circuit to prevent start-up until the input voltage reaches 3 V; an internally and 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.

The TPS54311, TPS54312, TPS54313, TPS54314, TPS54315 and TPS54316 devices devices are available in a thermally enhanced 20-pin TSSOP (PWP) PowerPAD™ package, which eliminates bulky heatsinks.

TPS54311 特性

• 60-mΩ MOSFET Switches for High Efficiency at 3-A Continuous Output Source or Sink Current
• 0.9-V, 1.2-V, 1.5-V, 1.8-V, 2.5-V and 3.3-V Fixed Output Voltage Devices With 1% Initial Accuracy
• Internally Compensated for Low Parts Count
• Fast Transient Response
• Wide PWM Frequency: Fixed 350 kHz, 550 kHz or Adjustable 280 kHz to 700 kHz
• Load Protected by Peak Current Limit and Thermal Shutdown
• Integrated Solution Reduces Board Area and Total Cost
• APPLICATIONS
  • Low-Voltage, High-Density Systems With Power Distributed at 5 V or 3.3 V
  • Point of Load Regulation for High-Performance DSPs, FPGAs, ASICs, and Microprocessors
  • Broadband, Networking, and Optical Communications Infrastructure
  • Portable Computing/Notebook PCs

TPS54311 芯片订购指南

器件	状态	价格（美元）	封装 | 引脚	封装数量 | 封装载体	丝印标记
TPS54311PWP	ACTIVE	3.10 | 1ku	HTSSOP (PWP) | 20	70 | TUBE	TPS54311
TPS54311PWPG4	ACTIVE	3.10 | 1ku	HTSSOP (PWP) | 20	70 | TUBE	TPS54311
TPS54311PWPR	ACTIVE	2.85 | 1ku	HTSSOP (PWP) | 20	2000 | LARGE T&R	TPS54311
TPS54311PWPRG4	ACTIVE	2.85 | 1ku	HTSSOP (PWP) | 20	2000 | LARGE T&R	TPS54311

TPS54311 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
TPS54311PWP	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM		TPS54311PWP
TPS54311PWPG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	TPS54311PWPG4	TPS54311PWPG4
TPS54311PWPR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM		TPS54311PWPR
TPS54311PWPRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	TPS54311PWPRG4	TPS54311PWPRG4

TPS54311 应用技术支持与电子电路设计开发资源下载

1. TPS54311 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)

TPS54311 相关工具

名称	型号	公司	工具/软件类型
3A、输入电压为 3V 至 6V、输出电压固定为 1.8V 的 DC/DC 转换器	TPS54311EVM	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