TPS54319 具有集成 FET 的 2.95V 至 6V 输入、3A 输出、2MHz 同步降压转换开关
TPS54319 描述
The TPS54319 device is a full featured 6 V, 3 A, synchronous step down current mode converter with two integrated MOSFETs.
The TPS54319 enables small designs by integrating the MOSFETs, implementing current mode control to reduce external component count, reducing inductor size by enabling up to 2 MHz switching frequency, and minimizing the IC footprint with a small 3mm × 3mm thermally enhanced QFN package.
The TPS54319 provides accurate regulation for a variety of loads with an accurate ±3.0% Voltage Reference (VREF) over temperature.
Efficiency is maximized through the integrated 45mOhm MOSFETs and 360uA typical supply current. Using the enable pin, shutdown supply current is reduced to 2 uA by entering a shutdown mode
|
TPS53311 |
TPS54218 |
TPS54318 |
TPS54319 |
TPS54418 |
| Iout(Max)(A) |
3 |
2 |
3 |
3 |
4 |
| Vin(Min)(V) |
2.9 |
2.95 |
2.95 |
2.95 |
2.95 |
| Vin(Max)(V) |
6.0 |
6 |
6 |
6 |
6 |
| Vout(Min)(V) |
0.6 |
0.8 |
0.8 |
0.8 |
0.8 |
| Vout(Max)(V) |
|
4.5 |
4.5 |
4.5 |
4.5 |
| Iq(Typ)(mA) |
2.2 |
0.35 |
0.35 |
0.36 |
0.35 |
| Switching Frequency(Max)(kHz) |
1100 |
2000 |
2000 |
2000 |
2000 |
| Switch Current Limit(Typ)(A) |
4.5 |
2.9 |
4 |
4 |
5 |
| Topology |
Buck |
Buck |
Buck |
Buck |
Buck |
| Operating Temperature Range(°C) |
-40 to 85 |
-40 to 150 |
-40 to 150 |
-40 to 150 |
-40 to 150 |
| Pin/Package |
16QFN |
16WQFN |
16WQFN |
16WQFN |
16WQFN |
| Rating |
Catalog |
Catalog |
Catalog |
Catalog |
Catalog |
| Duty Cycle(Max)(%) |
84.5 |
98 |
98 |
98 |
98 |
| Regulated Outputs(#) |
1 |
1 |
1 |
1 |
1 |
| Thermal Shutdown |
Yes |
Yes |
Yes |
Yes |
yes |
TPS54319 特性
- Two 45-mOhm (typical) MOSFETs for High Efficiency at 3-A Loads
- 300kHz to 2MHz Switching Frequency
- 0.8 V ± 3.0% Voltage Reference Over Temperature (0°C to 85°C)
- Synchronizes to External Clock
- Adjustable Slow Start/Sequencing
- UV and OV Power Good Output
- –40°C to 150°C Operating Junction Temperature Range
- Thermally Enhanced 3mm × 3mm 16-pin QFN
- Pin Compatible to TPS54318
- APPLICATIONS
- Low-Voltage, High-Density Power Systems
- Point-of-Load Regulation for Consumer Applications such as Set Top Boxes,
LCD Displays, CPE Equipment
TPS54319 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 |
| TPS54319RTER |
ACTIVE |
-40 to 150 |
2.00 | 1ku |
WQFN (RTE) | 16 |
3000 | LARGE T&R |
54319 |
| TPS54319RTET |
ACTIVE |
-40 to 150 |
2.20 | 1ku |
WQFN (RTE) | 16 |
250 | SMALL T&R |
54319 |
TPS54319 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 |
| TPS54319RGTR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
|
TPS54319RGTR |
| TPS54319RTET |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
|
TPS54319RTET |
TPS54319 应用技术支持与电子电路设计开发资源下载
- TPS54319 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)
TPS54319 相关工具
| 名称 |
型号 |
公司 |
工具/软件类型 |
| Evaluation Module for TPS54319 Step-Down SWIFT DC/DC Converter |
TPS54319EVM-626 |
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 |
TPS54319 参考设计
| 说明 |
型号 |
公司 |
| Synchronous Buck Controller Doubles as a 2-A Buck Boost Inverter |
PMP4856 |
Texas Instruments |