TPS51020 双路 DDR 可选同步降压控制器
TPS51020 描述
The TPS51020 is a multi-function dual-synchronous step-down controller for notebook system power. The part is specifically designed for high performance, high efficiency applications where the loss associated with a current sense resistor is unacceptable. The TPS51020 utilizes feed forward voltage mode control to attain high efficiency without sacrificing line response. Efficiency at light load conditions can be maintained high as well by incorporating autoskip operation. A selectable, Suspend to RAM (STR) supported, DDR option provides a one chip solution for all switching applications from 5-V/3.3-V supply to a complete DDR termination solution.
|
TPS51020 |
TPS5120 |
TPS51221 |
TPS51222 |
TPS5124 |
| Topology |
Buck |
Buck |
Buck |
Buck |
Buck |
| Vin(Min)(V) |
4.5 |
4.5 |
4.5 |
4.5 |
4.5 |
| Vin(Max)(V) |
28 |
28 |
28 |
32 |
15 |
| Vout(Min)(V) |
0.9 |
0.9 |
1 |
1 |
0.9 |
| Vout(Max)(V) |
24 |
26 |
12 |
12 |
12 |
| Regulated Outputs(#) |
2 |
2 |
2 |
2 |
2 |
| Iout(Max)(A) |
20 |
20 |
20 |
20 |
20 |
| Switching Frequency(Max)(kHz) |
450 |
500 |
1000 |
1000 |
500 |
| Iq(Typ)(mA) |
1.4 |
1.1 |
1.3 |
|
1.1 |
| Pin/Package |
30TSSOP |
30TSSOP |
32QFN |
32QFN |
30TSSOP |
| Thermal Shutdown |
Yes |
Yes |
Yes |
Yes |
No |
| Vout2(Min)(V) |
0.9 |
0.9 |
1 |
1 |
0.9 |
| Vout2(Max)(V) |
24 |
26 |
12 |
12 |
12 |
| Iout2(A) |
20 |
15 |
20 |
20 |
20 |
| Rating |
Catalog |
Catalog |
Catalog |
Catalog |
Catalog |
| Duty Cycle(Max)(%) |
88 |
80 |
99 |
99 |
80 |
TPS51020 特性
- Wide Input Voltage Range: 4.5-V to 28-V
- Selectable Dual and DDR Modes
- Selectable Fixed Frequency Voltage Mode
- Advanced Power Good Logic Monitors both Channels
- Selectable Autoskip Mode
- Integrated Boot Strap Diodes
- 180° Phase Shift Between Channels
- Integrated 5-V, 60-mA Regulator
- Input Feedforward Control
- 1% Internal 0.85-V Reference
- RDS(on) Overcurrent Detection (4200 ppm/°C)
- Integrated OVP, UVP and Power Good Timers
- 30-pin TSSOP Package
- APPLICATIONS
- Notebook Computers System Bus and I/O
- DDR I or DDR II Termination
TPS51020 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 |
| TPS51020DBT |
ACTIVE |
-40 to 85 |
2.35 | 1ku |
TSSOP (DBT) | 30 |
60 | TUBE |
PS51020 |
| TPS51020DBTG4 |
ACTIVE |
-40 to 85 |
2.35 | 1ku |
TSSOP (DBT) | 30 |
60 | TUBE |
PS51020 |
| TPS51020DBTR |
ACTIVE |
-40 to 85 |
2.10 | 1ku |
TSSOP (DBT) | 30 |
2000 | LARGE T&R |
PS51020 |
| TPS51020DBTRG4 |
ACTIVE |
-40 to 85 |
2.10 | 1ku |
TSSOP (DBT) | 30 |
2000 | LARGE T&R |
PS51020 |
TPS51020 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 |
| TPS51020DBT |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
|
TPS51020DBT |
| TPS51020DBTG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
TPS51020DBTG4 |
TPS51020DBTG4 |
| TPS51020DBTR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
|
TPS51020DBTR |
| TPS51020DBTRG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
TPS51020DBTRG4 |
TPS51020DBTRG4 |
TPS51020 应用技术支持与电子电路设计开发资源下载
- TPS51020 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)
TPS51020 相关工具
TPS51020 参考设计
| 说明 |
型号 |
公司 |
| SEPIC，输入电压 3.3V，输出电压 3.3V |
PMP169 |
Texas Instruments |
| 热插拔、推挽、同步 降压、负反向、双路同步 降压参考设计 |
PMP156 |
Texas Instruments |
