TPS5450 5.5V 至 36V、5A、500kHz 降压 SWIFT™ 转换器
TPS5450 描述
As a member of the SWIFT™ family of DC/DC regulators, the TPS5450 is a high-output-current PWM converter that integrates a low resistance high side N-channel MOSFET. Included on the substrate with the listed features are a high performance voltage error amplifier that provides tight voltage regulation accuracy under transient conditions; an undervoltage-lockout circuit to prevent start-up until the input voltage reaches 5.5 V; an internally set slow-start circuit to limit inrush currents; and a voltage feed-forward circuit to improve the transient response. Using the ENA pin, shutdown supply current is reduced to 18 µA typically. Other features include an active-high enable, overcurrent limiting, overvoltage protection and thermal shutdown.
|
TPS54060 |
TPS54160 |
TPS54260 |
TPS5430 |
TPS54350 |
TPS5450 |
TPS54550 |
| Iout(Max)(A) |
0.5 |
1.5 |
2.5 |
3 |
3 |
5 |
6 |
| Vin(Min)(V) |
3.5 |
3.5 |
3.5 |
5.5 |
4.5 |
5.5 |
4.5 |
| Vin(Max)(V) |
60 |
60 |
60 |
36 |
20 |
36 |
20 |
| Vout(Min)(V) |
0.8 |
0.8 |
0.8 |
1.23 |
0.9 |
1.22 |
0.9 |
| Vout(Max)(V) |
58 |
58 |
58 |
31 |
12 |
31 |
12 |
| Iq(Typ)(mA) |
0.116 |
0.116 |
0.138 |
3 |
5 |
3 |
9 |
| Switching Frequency(Max)(kHz) |
2500 |
2500 |
2500 |
|
700 |
500 |
700 |
| Switching Frequency(Typ)(kHz) |
|
|
|
500 |
|
|
|
| Switch Current Limit(Typ)(A) |
0.6 |
1.8 |
3.5 |
4 |
3.3 |
6 |
7.5 |
| Topology |
Buck, Inverting Buck/Boost |
Buck, Inverting Buck/Boost |
Buck ,Inverting Buck/Boost |
Buck, Inverting Buck/Boost |
Buck, Inverting Buck/Boost |
Buck |
Buck |
| Operating Temperature Range(°C) |
-40 to 150 |
-40 to 150 |
-40 to 150 |
-40 to 125 |
-40 to 150,-40 to 150) |
-40 to 125 |
-40 to 150 |
| Pin/Package |
10MSOP-PowerPAD |
10MSOP-PowerPAD |
10MSOP-PowerPAD |
8SO PowerPAD |
16HTSSOP |
8SO PowerPAD |
16HTSSOP |
| Rating |
Catalog |
Catalog |
Catalog |
Catalog |
Catalog |
Catalog |
Catalog |
| Duty Cycle(Max)(%) |
98 |
98 |
98 |
87 |
80 |
89 |
80 |
| Regulated Outputs(#) |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
| Thermal Shutdown |
Yes |
Yes |
Yes |
Yes |
yes |
|
yes |
TPS5450 特性
- Wide Input Voltage Range: 5.5 V to 36 V
- Up to 5-A Continuous (6-A Peak) Output Current
- High Efficiency Greater than 90% Enabled by 110-mΩ Integrated MOSFET Switch
- Wide Output Voltage Range: Adjustable Down to 1.22 V with 1.5% Initial Accuracy
- Internal Compensation Minimizes External Parts Count
- Fixed 500 kHz Switching Frequency for Small Filter Size
- 18 µA Shut Down Supply Current
- Improved Line Regulation and Transient Response by Input Voltage Feed Forward
- System Protected by Overcurrent Limiting, Overvoltage Protection and Thermal Shutdown
- -40°C to 125°C Operating Junction Temperature Range
- Available in Small Thermally Enhanced 8-Pin SOIC PowerPAD Package
- For SWIFT™ Documentation, Application Notes and Design Software, See the TI Website at www.ti.com/swift
- APPLICATIONS
- High Density Point-of-Load Regulators
- LCD Displays, Plasma Displays
- Battery Chargers
- 12-V/24-V Distributed Power Systems
TPS5450 芯片订购指南
TPS5450 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 |
| TPS5450DDA |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
|
TPS5450DDA |
| TPS5450DDAG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
TPS5450DDAG4 |
TPS5450DDAG4 |
| TPS5450DDAR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
|
TPS5450DDAR |
| TPS5450DDARG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
TPS5450DDARG4 |
TPS5450DDARG4 |
TPS5450 应用技术支持与电子电路设计开发资源下载
- TPS5450 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)
TPS5450 相关工具
| 名称 |
型号 |
公司 |
工具/软件类型 |
| 5A SWIFT 评估模块 |
TPS5450EVM-254 |
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 |
TPS5450 参考设计
| 说明 |
型号 |
公司 |
| Synchronous Buck Controller Doubles as a 2-A Buck Boost Inverter |
PMP2933 |
Texas Instruments |
