TPS51218 用于笔记本电源的具有 DCAPTM 模式的 3V 至 28V 输入、 20A 同步降压控制器
TPS51218 描述
The TPS51218 is a small-sized single buck controller with adaptive on-time D-CAPTM mode. The device is suitable for low output voltage, high current, PC system power rail and similar point-of-load (POL) power supply in digital consumer products. A small package with minimal pin-count saves space on the PCB, while a dedicated EN pin and pre-set frequency selections minimize design effort required for new designs. The skip-mode at light load condition, strong gate drivers and low-side FET RDS(on) current sensing supports low-loss and high efficiency, over a broad load range. The conversion input voltage which is the high-side FET drain voltage ranges from 3 V to 28 V and the output voltage ranges from 0.7 V to 2.
|
TPS51117 |
TPS51217 |
TPS51218 |
TPS51513 |
| Topology |
Buck,D-CAPTM Mode |
Buck,D-CAPTM Mode |
Buck,D-CAPTM Mode |
Buck,D-CAP+TM 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 |
TPS51218 特性
- Wide Input Voltage Range: 3 V to 28 V
- Output Voltage Range: 0.7 V to 2.6 V
- Wide Output Load Range: 0 to 20A+
- Built-in 0.5% 0.7 V Reference
- D-CAP Mode with 100-ns Load Step Response
- Adaptive On Time Control Architecture With 4 Selectable Frequency Setting
- 4700 ppm/°C RDS(on) Current Sensing
- Internal 1-ms Voltage Servo Softstart
- Pre-Charged Start-up Capability
- Built in Output Discharge
- Power Good Output
- Integrated Boost Switch
- Built-in OVP/UVP/OCP
- Thermal Shutdown (Non-latch)
- SON-10 (DSC) Package
- APPLICATIONS
- Notebook Computers
- I/O Supplies
- System Power Supplies
TPS51218 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 |
| TPS51218DSCR |
ACTIVE |
-40 to 85 |
1.35 | 1ku |
SON (DSC) | 10 |
3000 | LARGE T&R |
PIYI |
| TPS51218DSCT |
ACTIVE |
-40 to 85 |
1.50 | 1ku |
SON (DSC) | 10 |
250 | SMALL T&R |
PIYI |
TPS51218 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 |
| TPS51218DSCR |
Green (RoHS & no Sb/Br) |
Call TI |
Level-2-260C-1 YEAR |
|
TPS51218DSCR |
| TPS51218DSCT |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
|
TPS51218DSCT |
TPS51218 应用技术支持与电子电路设计开发资源下载
- TPS51218 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)
TPS51218 相关工具
| 名称 |
型号 |
公司 |
工具/软件类型 |
| 20A、12V 输入电压、1.2V 输出电压降压转换器评估模块 |
TPS51218EVM-496 |
Texas Instruments |
开发电路板/EVM |
| High Density, High Current Power Supply Solution Using NexFETTM Power Block and TPS51218 |
CSD86350Q5DEVM-604 |
Texas Instruments |
开发电路板/EVM |
TPS51218 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 |