TPS54972 9A 有源总线终端/DDR 内存 DC/DC 转换器
TPS54972 描述
As a member of the SWIFT™ family of dc/dc regulators, the TPS54972 low-input voltage high-output current synchronous-buck PWM converter integrates all required active components. Included on the substrate with the listed features are a true, high performance, voltage error amplifier that enables maximum performance under transient conditions and flexibility in choosing the output filter L and C components; an under-voltage-lockout circuit to prevent start-up until the input voltage reaches 3.0 V; an internally set slow-start circuit to limit in-rush currents; and a status output to indicate valid operating conditions.
The TPS54972 is available in a thermally enhanced 28-pin TSSOP (PWP) PowerPAD™ package, which eliminates bulky heatsinks.
|
TPS54372 |
TPS54672 |
TPS54872 |
TPS54972 |
| Iout(Max)(A) |
3 |
6 |
8 |
9 |
| Vin(Min)(V) |
3 |
3 |
4 |
3 |
| Vin(Max)(V) |
6 |
6 |
6 |
4 |
| Vout(Min)(V) |
0.2 |
0.2 |
0.2 |
0.2 |
| Vout(Max)(V) |
4.5 |
4.5 |
3.3 |
2.5 |
| Iq(Typ)(mA) |
6.2 |
11 |
11 |
11 |
| Switching Frequency(Max)(kHz) |
700 |
700 |
700 |
700 |
| Switch Current Limit(Typ)(A) |
4 |
7 |
9 |
11 |
| Topology |
Buck |
Buck |
Buck |
Buck |
| Operating Temperature Range(°C) |
-40 to 85 |
-40 to 85 |
-40 to 85 |
-40 to 85 |
| Pin/Package |
20HTSSOP |
28HTSSOP |
28HTSSOP |
28HTSSOP |
| Rating |
Catalog |
Catalog |
Catalog |
Catalog |
| Duty Cycle(Max)(%) |
90 |
90 |
90 |
90 |
| Regulated Outputs(#) |
1 |
1 |
1 |
1 |
| Thermal Shutdown |
yes |
yes |
yes |
yes |
TPS54972 特性
- Tracks Externally Applied Reference Voltage
- 15-mΩ MOSFET Switches for High Efficiency at 9-A Continuous Output Source or Sink Current
- 6% to 90% VI Output Tracking Range
- Wide PWM Frequency: Fixed 350 kHz or Adjustable 280 kHz to 700 kHz
- Load Protected by Peak Current Limit and Thermal Shutdown
- Integrated Solution Reduces Board Area and Total Cost
- APPLICATIONS
- DDR Memory Termination Voltage
- Active Termination of GTL and SSTL High-Speed Logic Families
- DAC Controlled High Current Output Stage
- Precision Point of Load Power Supply
TPS54972 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 |
| TPS54972PWP |
ACTIVE |
-40 to 85 |
2.05 | 1ku |
HTSSOP (PWP) | 28 |
50 | TUBE |
TPS54972 |
| TPS54972PWPG4 |
ACTIVE |
-40 to 85 |
2.05 | 1ku |
HTSSOP (PWP) | 28 |
50 | TUBE |
TPS54972 |
| TPS54972PWPR |
ACTIVE |
-40 to 85 |
1.85 | 1ku |
HTSSOP (PWP) | 28 |
2000 | LARGE T&R |
TPS54972 |
| TPS54972PWPRG4 |
ACTIVE |
-40 to 85 |
1.85 | 1ku |
HTSSOP (PWP) | 28 |
2000 | LARGE T&R |
TPS54972 |
TPS54972 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 |
| TPS54972PWP |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
|
TPS54972PWP |
| TPS54972PWPG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
TPS54972PWPG4 |
TPS54972PWPG4 |
| TPS54972PWPR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
|
TPS54972PWPR |
| TPS54972PWPRG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
TPS54972PWPRG4 |
TPS54972PWPRG4 |
TPS54972 应用技术支持与电子电路设计开发资源下载
- TPS54972 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)
TPS54972 相关工具
| 名称 |
型号 |
公司 |
工具/软件类型 |
| 9A 有源总线终端/DDR 内存 DC/DC 转换器 |
TPS54972EVM-222 |
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 |
