TPS51511 Synchronous Switcher Controller With 2A LDO for VGA Power
|
TPS51511 |
| Topology |
Buck,D-CAP™ Mode |
| Vin(Min)(V) |
3 |
| Vin(Max)(V) |
28 |
| Vout(Min)(V) |
0.75 |
| Vout(Max)(V) |
3.3 |
| Regulated Outputs(#) |
1 |
| Iout(Max)(A) |
10 |
| Switching Frequency(Max)(kHz) |
350 |
| Pin/Package |
20QFN |
| Thermal Shutdown |
Yes |
| Rating |
Catalog |
| Duty Cycle(Max)(%) |
86 |
TPS51511 描述
The TPS51511 is a 350-kHz D-CAP-mode synchronous switcher with a 2-A, source-only low drop-out (LDO) regulator. It is specifically designed for low cost/low noise/low external-component count power systems for GPU applications. The integrated 'OD' switch in the buck controller supports dynamic output voltage change. The current mode option of the synchronous buck converter can support pure output ceramic-capacitor applications. The open-drain LDO power-good signal can be accessed through the OD pin when it is needed in the application. The TPS51511 is available in the thermally-enhanced 20-pin QFN package, and is specified from -40°C to 85°C.
TPS51511 特性
- Switcher Controller:
- Adjustable-Output Buck Converter, 0.75 V to 3.3 V
- Wide Input Voltage Range: 3.0-V to 28-V
- D-CAP™ Mode with 100-ns Load Step Response
- Current Mode Option Supports Ceramic Output Capacitors
- Current Sensing From RDS(ON) or Resistor
- Internal Switch Supports Dynamic Output Voltage Change
- Advanced PGOOD Mask Feature
- Equipped With PGOOD, OVP and UVP
- Output Discharge
- 5 V UVLO Protection
- LDO Regulator:
- 2-A LDO for GPU I/O Power
- Input Range: Up to 5 V
- Output Range: 0.75 V to 3.3 V
- Requires Only 20-µF Ceramic Output Capacitor for LDO Output
- Optional PGOOD
- Output Discharge
- Thermal Shutdown
- APPLICATIONS
TPS51511 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 |
| TPS51511RHLR |
ACTIVE |
-40 to 85 |
1.90 | 1ku |
QFN (RHL) | 20 |
3000 | LARGE T&R |
51511 |
| TPS51511RHLRG4 |
ACTIVE |
-40 to 85 |
1.90 | 1ku |
QFN (RHL) | 20 |
3000 | LARGE T&R |
51511 |
| TPS51511RHLT |
ACTIVE |
-40 to 85 |
1.95 | 1ku |
QFN (RHL) | 20 |
250 | SMALL T&R |
51511 |
| TPS51511RHLTG4 |
ACTIVE |
-40 to 85 |
1.95 | 1ku |
QFN (RHL) | 20 |
250 | SMALL T&R |
51511 |
TPS51511 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 |
| TPS51511RHLR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
|
TPS51511RHLR |
| TPS51511RHLRG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
TPS51511RHLRG4 |
TPS51511RHLRG4 |
| TPS51511RHLT |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
|
TPS51511RHLT |
| TPS51511RHLTG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
TPS51511RHLTG4 |
TPS51511RHLTG4 |
TPS51511 应用技术支持与电子电路设计开发资源下载
- TPS51511 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)
TPS51511 相关工具
| 名称 |
型号 |
公司 |
工具/软件类型 |
| TPS51511EVM 评估模块 |
TPS51511EVM |
Texas Instruments |
开发电路板/EVM |
TPS51511 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 |
