TPS51117 针对轻载效率优化的具有 DCAP™ 模式的 1.8V 至 28V 输入同步 降压控制器
TPS51117 描述
The TPS51117 is a cost effective, synchronous buck controller for POL voltage regulation in notebook PC applications. The controller is dedicated for Adaptive On-Time D-CAP Mode operation that provides ease of use, low external component count, and fast transient response. Auto-skip mode for high efficiency down to the milli-ampere load range, or PWM-only mode for low noise operation is selectable.
The current sensing scheme for positive overcurrent and negative overcurrent protection is loss-less low-side RDS(on) sensing plus temperature compensation. The device receives a 5-V (4.5 V to 5.5 V) supply from another regulator such as the TPS51120 or TPS51020. The conversion input can be either VBAT or a 5-V rail, ranging from 1.
|
TPS51117 |
TPS51217 |
TPS51218 |
TPS51513 |
| Topology |
Buck,D-CAP™ Mode |
Buck,D-CAP™ Mode |
Buck,D-CAP™ Mode |
Buck,D-CAP+™ Mode |
| Vin(Min)(V) |
1.8 |
3 |
3 |
3 |
| Vin(Max)(V) |
28 |
28 |
28 |
28 |
| Vout(Min)(V) |
0.76 |
0.6 |
0.7 |
0.7 |
| Vout(Max)(V) |
5.5 |
2.6 |
2.6 |
1.05 |
| Regulated Outputs(#) |
1 |
1 |
1 |
1 |
| Iout(Max)(A) |
10 |
20 |
20 |
25 |
| Switching Frequency(Max)(kHz) |
550 |
340 |
430 |
500 |
| Pin/Package |
14TSSOP, 14VQFN |
10SON |
10SON |
32QFN |
| Thermal Shutdown |
Yes |
Yes |
Yes |
Yes |
| Rating |
Catalog |
Catalog |
Catalog |
Catalog |
| Duty Cycle(Max)(%) |
95 |
89 |
91 |
90 |
TPS51117 特性
- High Efficiency, Low Power Consumption, 4.5-µA Typical Shutdown Current
- Fixed Frequency Emulated On-Time Control, Adjustable from 100 kHz to 550 kHz
- D-CAP™ Mode with 100-ns Load Step Response
- < 1% Initial Reference Accuracy
- Output Voltage Range: 0.75 V to 5.5 V
- Wide Input Voltage Range: 1.8 V to 28 V
- Selectable Auto-Skip/PWM-Only Operation
- Temperature Compensated (4500 ppm/°C) Low-Side RDS(on) Overcurrent Sensing
- Negative Overcurrent Limit
- Integrated Boost Diode
- Integrated OVP/UVP and Thermal Shutdown
- Power-Good Signal
- Internal 1.2-ms Voltage Softstart
- Integrated Output Discharge (Softstop)
- APPLICATIONS
- Notebook Computers
- I/O Supplies
- System Power Supplies
TPS51117 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 |
| TPS51117PW |
ACTIVE |
-40 to 85 |
1.35 | 1ku |
TSSOP (PW) | 14 |
90 | TUBE |
51117 |
| TPS51117PWG4 |
ACTIVE |
-40 to 85 |
1.35 | 1ku |
TSSOP (PW) | 14 |
90 | TUBE |
51117 |
| TPS51117PWR |
ACTIVE |
-40 to 85 |
1.20 | 1ku |
TSSOP (PW) | 14 |
2000 | LARGE T&R |
51117 |
| TPS51117PWRG4 |
ACTIVE |
-40 to 85 |
1.20 | 1ku |
TSSOP (PW) | 14 |
2000 | LARGE T&R |
51117 |
| TPS51117RGYR |
ACTIVE |
-40 to 85 |
1.20 | 1ku |
VQFN (RGY) | 14 |
3000 | LARGE T&R |
51117 |
| TPS51117RGYRG4 |
ACTIVE |
-40 to 85 |
1.20 | 1ku |
VQFN (RGY) | 14 |
3000 | LARGE T&R |
51117 |
| TPS51117RGYT |
ACTIVE |
-40 to 85 |
1.20 | 1ku |
VQFN (RGY) | 14 |
250 | SMALL T&R |
51117 |
| TPS51117RGYTG4 |
ACTIVE |
-40 to 85 |
1.20 | 1ku |
VQFN (RGY) | 14 |
250 | SMALL T&R |
51117 |
TPS51117 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 |
| TPS51117PW |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
|
TPS51117PW |
| TPS51117PWG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
TPS51117PWG4 |
TPS51117PWG4 |
| TPS51117PWR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
|
TPS51117PWR |
| TPS51117PWRG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
TPS51117PWRG4 |
TPS51117PWRG4 |
| TPS51117RGYR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
|
TPS51117RGYR |
| TPS51117RGYRG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
TPS51117RGYRG4 |
TPS51117RGYRG4 |
| TPS51117RGYT |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
|
TPS51117RGYT |
| TPS51117RGYTG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
TPS51117RGYTG4 |
TPS51117RGYTG4 |
TPS51117 应用技术支持与电子电路设计开发资源下载
- TPS51117 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)
TPS51117 相关工具
| 名称 |
型号 |
公司 |
工具/软件类型 |
| 10A Evaluation Module Featuring the TPS51117 Synchronous Buck Controller with D-CAP Mode |
TPS51117EVM |
Texas Instruments |
开发电路板/EVM |
TPS51117 参考设计
| 说明 |
型号 |
公司 |
| 二相同步 降压，输入电压为 5V 或 12V。 多路输出电压：1.8V 和 3.3V |
PMP176 |
Texas Instruments |
| 同步降压时，输入电压为 19.5V |
PMP070 |
Texas Instruments |
| 同步降压，输入电压为 12V |
PMP217 |
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 |
| 集成 FET、正向、双路同步的同步降压 降压参考设计 |
PMP041 |
Texas Instruments |
