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
- 30-Ohm, 12-A Peak MOSFET Switches for High Efficiency at 6-A Continuous Output Source or Sink Current
- Disabled Current Sinking During Start-Up
- 0.9-V to 3.3-V Adjustable Output Voltage Range With 1.0% Accuracy
- Wide PWM Frequency:
Fixed 350 kHz, 550 kHz or Adjustable 280 kHz to 700 kHz
- Synchronizable to 700 kHz
- Load Protected by Peak Current Limit and Thermal Shutdown
- Integrated Solution Reduces Board Area and Component Count
- APPLICATIONS
- Low-Voltage, High-Density Distributed Power Systems
- Point of Load Regulation for High Performance DSPs, FPGAs, ASICs and Microprocessors
- Broadband, Networking and Optical Communications Infrastructure
- Power PC Series Processors
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
- TPS54673 数据资料 dataSheet 下载.PDF
- TI 德州仪器非隔离式开关 DC/DC 调节器选型与价格参考 . xls
- Dual MOSFET Driver
(PDF 498 KB)
- 全面认识开关型电源中的BUCK-BOOST功率级 (Rev. A)
(PDF 2206 KB)
- Understanding Boost Power Stages In Switchmode Power Supplies
(PDF 149 KB)
- Understanding Buck Power Stages In Switchmode Power Supplies
(PDF 173 KB)
- 标准线性产品交叉参考 (Rev. D)
(PDF 1058 KB)
- 模数规格和性能特性术语表 (Rev. A) (PDF 1993 KB)
- 所选封装材料的热学和电学性质 (PDF 645 KB)
- 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 |