TPS5420 5.5V 至 36V、2A、500kHz 降压 SWIFTTM 转换器
TPS5420 描述
As a member of the SWIFTTM family of DC/DC regulators, the TPS5420 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 is 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 uA typically. Other features include an active-high enable, overcurrent limiting, overvoltage protection and thermal shutdown.
|
TPS5410 |
TPS5420 |
TPS5430 |
TPS5450 |
| Iout(Max)(A) |
1 |
2 |
3 |
5 |
| Vin(Min)(V) |
5.5 |
5.5 |
5.5 |
5.5 |
| Vin(Max)(V) |
36 |
36 |
36 |
36 |
| Vout(Min)(V) |
1.23 |
1.23 |
1.23 |
1.22 |
| Vout(Max)(V) |
31 |
31 |
31 |
31 |
| Iq(Typ)(mA) |
3 |
3 |
3 |
3 |
| Switching Frequency(Max)(kHz) |
|
|
|
500 |
| Switching Frequency(Typ)(kHz) |
500 |
500 |
500 |
|
| Switch Current Limit(Typ)(A) |
1.2 |
3 |
4 |
6 |
| Topology |
Buck |
Buck |
Buck, Inverting Buck/Boost |
Buck |
| Operating Temperature Range(°C) |
-40 to 125 |
-40 to 125 |
-40 to 125 |
-40 to 125 |
| Pin/Package |
8SOIC |
8SOIC |
8SO PowerPAD |
8SO PowerPAD |
| Rating |
Catalog |
Catalog |
Catalog |
Catalog |
| Duty Cycle(Max)(%) |
87.5 |
87 |
87 |
89 |
| Regulated Outputs(#) |
1 |
1 |
1 |
1 |
| Thermal Shutdown |
Yes |
Yes |
Yes |
|
TPS5420 特性
- Wide Input Voltage Range: 5.5 V to 36 V
- Up to 2-A Continuous (3-A Peak) Output Current
- High Efficiency up to 95% Enabled by 110-mOhm 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
- Improved Line Regulation and Transient Response by Input Voltage Feed Forward
- System Protected by Over Current Limiting, Over Voltage Protection and Thermal Shutdown
- -40°C to 125°C Operating Junction Temperature Range
- Available in Small 8-Pin SOIC Package
- For SWIFT Documentation, Application Notes and Design Software, See the TI Website at www.ti.com/swift
- APPLICATIONS
- Consumer: Set-top Box, DVD, LCD Displays
- Industrial and Car Audio Power Supplies
- Battery Chargers, High Power LED Supply
- 12-V/24-V Distributed Power Systems
TPS5420 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 |
| TPS5420D |
ACTIVE |
-40 to 125 |
1.80 | 1ku |
SOIC (D) | 8 |
75 | TUBE |
TPS5420 |
| TPS5420DG4 |
ACTIVE |
-40 to 125 |
1.80 | 1ku |
SOIC (D) | 8 |
75 | TUBE |
TPS5420 |
| TPS5420DR |
ACTIVE |
-40 to 125 |
1.60 | 1ku |
SOIC (D) | 8 |
2500 | LARGE T&R |
TPS5420 |
| TPS5420DRG4 |
ACTIVE |
-40 to 125 |
1.60 | 1ku |
SOIC (D) | 8 |
2500 | LARGE T&R |
TPS5420 |
TPS5420 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 |
| TPS5420D |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
|
TPS5420D |
| TPS5420DG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
TPS5420DG4 |
TPS5420DG4 |
| TPS5420DR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
|
TPS5420DR |
| TPS5420DRG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
TPS5420DRG4 |
TPS5420DRG4 |
TPS5420 应用技术支持与电子电路设计开发资源下载
- TPS5420 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)
TPS5420 相关工具
| 名称 |
型号 |
公司 |
工具/软件类型 |
| 10V 至 36V 输入、2A 步降转换器 |
TPS5420EVM-175 |
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 |