TPS54240 具有 Eco-Mode™ 的 3.5V 至 42V 输入、2.5A 2.5MHz 降压 SWIFT™ 转换器
TPS54240 描述
The TPS54240 device is a 42V, 2.5A, step down regulator with an integrated high side MOSFET. Current mode control provides simple external compensation and flexible component selection. A low ripple pulse skip mode reduces the no load, regulated output supply current to 138µA. Using the enable pin, shutdown supply current is reduced to 1.3µA, when the enable pin is low.
Under voltage lockout is internally set at 2.5V, but can be increased using the enable pin. The output voltage startup ramp is controlled by the slow start pin that can also be configured for sequencing/tracking. An open drain power good signal indicates the output is within 94% to 107% of its nominal voltage.
A wide switching frequency range allows efficiency and external component size to be optimized
|
TPS54040 |
TPS54140 |
TPS54240 |
| Iout(Max)(A) |
0.5 |
1.5 |
2.5 |
| Vin(Min)(V) |
3.5 |
3.5 |
3.5 |
| Vin(Max)(V) |
42 |
42 |
42 |
| Vout(Min)(V) |
0.8 |
0.8 |
0.8 |
| Vout(Max)(V) |
39 |
39 |
39 |
| Iq(Typ)(mA) |
0.116 |
0.116 |
0.138 |
| Switching Frequency(Max)(kHz) |
2500 |
2500 |
2500 |
| Switch Current Limit(Typ)(A) |
0.6 |
1.8 |
3.5 |
| Topology |
Buck, Inverting Buck/Boost |
Inverting Buck/Boost |
Buck, Inverting Buck/Boost |
| Operating Temperature Range(°C) |
-40 to 150 |
-40 to 150 |
-40 to 150 |
| Pin/Package |
10MSOP-PowerPAD |
10MSOP-PowerPAD |
10MSOP-PowerPAD |
| Rating |
Catalog |
Catalog |
Catalog |
| Duty Cycle(Max)(%) |
98 |
98 |
98 |
| Regulated Outputs(#) |
1 |
1 |
1 |
| Thermal Shutdown |
Yes |
Yes |
Yes |
TPS54240 特性
- 3.5V to 42V Input Voltage Range
- 200-mΩ High-Side MOSFET
- High Efficiency at Light Loads with a Pulse Skipping Eco-Mode™
- 138µA Operating Quiescent Current
- 1.3µA Shutdown Current
- 100kHz to 2.5MHz Switching Frequency
- Synchronizes to External Clock
- Adjustable Slow Start/Sequencing
- UV and OV Power Good Output
- Adjustable UVLO Voltage and Hysteresis
- 0.8-V Internal Voltage Reference
- MSOP10 Package With PowerPAD™
- Supported by SwitcherPro™ Software Tool
- For SWIFT™ Documentation, See the TI Website at http://www.ti.com/swift
- APPLICATIONS
- 12-V and 24-V Industrial and Commercial Low Power Systems
- GSM, GPRS Modules in Fleet Management, E-Meters, and Security Systems
TPS54240 芯片订购指南
TPS54240 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 |
| TPS54240DGQ |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
|
TPS54240DGQ |
| TPS54240DGQR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
|
TPS54240DGQR |
TPS54240 应用技术支持与电子电路设计开发资源下载
- TPS54240 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)
TPS54240 相关工具
| 名称 |
型号 |
公司 |
工具/软件类型 |
| 2.5A SWIFT™ 转换器评估模块 |
TPS54240EVM-605 |
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 |
