TPS54331 具有 Eco-Mode™ 的 3A 28V 570kHz 降压 SWIFT™ DC/DC 转换器
TPS54331 描述
The TPS54331 is a 28-V, 3-A non-synchronous buck converter that integrates a low RDS(on) high side MOSFET. To increase efficiency at light loads, a pulse skipping Eco-mode™ feature is automatically activated. Furthermore, the 1 µA shutdown supply current allows the device to be used in battery powered applications. Current mode control with internal slope compensation simplifies the external compensation calculations and reduces component count while allowing the use of ceramic output capacitors. A resistor divider programs the hysteresis of the input under-voltage lockout. An overvoltage transient protection circuit limits voltage overshoots during startup and transient conditions. A cycle by cycle current limit scheme, frequency fold back and thermal shutdown protect the device and the load in the event of an overload condition.
|
TPS54231 |
TPS54232 |
TPS54233 |
TPS54331 |
TPS54332 |
| Iout(Max)(A) |
2 |
2 |
2 |
3 |
3.5 |
| Vin(Min)(V) |
3.5 |
3.5 |
3.5 |
3.5 |
3.5 |
| Vin(Max)(V) |
28 |
28 |
28 |
28 |
28 |
| Vout(Min)(V) |
0.8 |
0.8 |
0.8 |
0.8 |
0.8 |
| Vout(Max)(V) |
25 |
25 |
25 |
25 |
25 |
| Iq(Typ)(mA) |
0.11 |
0.11 |
0.11 |
0.11 |
0.11 |
| Switching Frequency(Typ)(kHz) |
570 |
1000 |
300 |
570 |
1000 |
| Switch Current Limit(Typ)(A) |
2.3 |
2.3 |
2.3 |
|
|
| Topology |
Buck |
Buck |
Buck |
Buck |
Buck |
| Operating Temperature Range(°C) |
-40 to 150 |
-40 to 150 |
-40 to 150 |
-40 to 150 |
-40 to 150 |
| Pin/Package |
8SOIC |
8SOIC |
8SOIC |
8SOIC |
8SO PowerPAD |
| Rating |
Catalog |
Catalog |
Catalog |
Catalog |
Catalog |
| Duty Cycle(Max)(%) |
90 |
90 |
90 |
90 |
90 |
| Regulated Outputs(#) |
1 |
1 |
1 |
1 |
1 |
| Thermal Shutdown |
Yes |
Yes |
Yes |
Yes |
yes |
TPS54331 特性
- 3.5 V to 28 V Input Voltage Range
- Adjustable Output Voltage Down to 0.8 V
- Integrated 80 mΩ High Side MOSFET Supports up to 2 A Continuous Output Current
- High Efficiency at Light Loads with a Pulse Skipping Eco-mode
- Fixed 1 MHz Switching Frequency
- Typical 1 µA Shutdown Quiescent Current
- Adjustable Slow Start Limits Inrush Currents
- Programmable UVLO Threshold
- Overvoltage Transient Protection
- Cycle by Cycle Current Limit, Frequency Fold Back and Thermal Shutdown Protection
- Available in 8-Pin SOIC Package
- Supported by SwitcherPro Software Tool (http://focus.ti.com/docs/toolsw/folderss/print/switcherpro.html)
- For SWIFT Documentation, See the TI Website at http://www.ti.com/swift
- APPLICATIONS
- Consumer Applications such as Set-Top Boxes, CPE Equipment, LCD Displays, Peripherals, and Battery Chargers
- Industrial and Car Audio Power Supplies
- 5V, 12V and 24V Distributed Power Systems
TPS54331 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 |
| TPS54331D |
ACTIVE |
-40 to 150 |
1.40 | 1ku |
SOIC (D) | 8 |
75 | TUBE |
54331 |
| TPS54331DG4 |
ACTIVE |
-40 to 150 |
1.40 | 1ku |
SOIC (D) | 8 |
75 | TUBE |
54331 |
| TPS54331DR |
ACTIVE |
-40 to 150 |
1.25 | 1ku |
SOIC (D) | 8 |
2500 | LARGE T&R |
54331 |
| TPS54331DRG4 |
ACTIVE |
-40 to 150 |
1.25 | 1ku |
SOIC (D) | 8 |
2500 | LARGE T&R |
54331 |
TPS54331 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 |
| TPS54331D |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
|
TPS54331D |
| TPS54331DG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
TPS54331DG4 |
TPS54331DG4 |
| TPS54331DR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
|
TPS54331DR |
| TPS54331DRG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
TPS54331DRG4 |
TPS54331DRG4 |
TPS54331 应用技术支持与电子电路设计开发资源下载
- TPS54331 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)
TPS54331 相关工具
| 名称 |
型号 |
公司 |
工具/软件类型 |
| TPS54331 28V 输入、3.3V 输出、3A 评估模块 |
TPS54331EVM-232 |
Texas Instruments |
开发电路板/EVM |
| 用于 SWIFT DC/DC 的反向电源计算器，它具有集成 FET |
SWIFTINV-CALC |
Texas Instruments |
计算实用程序 |
| 用于 SWIFT DC/DC 转换器的正负输出电压分离轨计算器 |
SWIFTPOSNEG-CALC |
Texas Instruments |
计算实用程序 |
| SwitcherPro(TM) 开关电源设计工具 |
SWITCHERPRO |
Texas Instruments |
应用软件 |
TPS54331 参考设计
| 说明 |
型号 |
公司 |
| Synchronous Buck Controller Doubles as a 2-A Buck Boost Inverter |
PMP4856 |
Texas Instruments |
