TPS40197 具有 4 位 VID 接口和电源状态良好指示的 4.5V 至 14V 输入同步降压控制器
|
TPS40197 |
| Topology |
Buck |
| Vin(Min)(V) |
4.5 |
| Vin(Max)(V) |
14 |
| Vout(Min)(V) |
0.9 |
| Vout(Max)(V) |
1.2 |
| Regulated Outputs(#) |
1 |
| Iout(Max)(A) |
6 |
| Switching Frequency(Max)(kHz) |
520 |
| Pin/Package |
16VQFN |
| Thermal Shutdown |
Yes |
| Rating |
Catalog |
| Duty Cycle(Max)(%) |
85 |
TPS40197 描述
The TPS40197 is a synchronous buck controller that operates from 4.5 V to 14 V input supply nominally. The controller implements voltage-mode control architecture with the switching frequency fixed at 520 kHz. The higher switching frequency facilitates the use of smaller inductor and output capacitors, thereby providing a compact power-supply solution. An adaptive anti-cross conduction scheme is used to prevent shoot through current in the power FETs.
The TPS40197 integrates the PWM control and 4-bit VID interface in a single chip to allow seamless on-the-fly VID changes with programmable transition rate. It provides a simple power solution for Smart-Reflex™ DSP cores.
Short circuit detection is done by sensing the voltage drop across the low-side FET when it is on and comparing it with a user selected threshold of 100 mV, 200 mV or 280 mV.
TPS40197 特性
- Input Voltage Range: 4.5 V to 14 V
- 4-Bit Dynamic VID-On-The-Fly Support
- VID Programmable Output Voltage with Programmable Transition Rate
- Fixed Switching Frequency of 520 kHz
- Selectable Low-Side (Three Settings) and Fixed High-Side Thermally Compensated Overcurrent Protection
- Power Good Indicator
- Internal 5-V Regulator
- Voltage Mode Control
- InternallyFixed 5.5-ms Soft-Start Time
- Pre-Bias Output Safe
- Thermal Shutdown at 140°C
- 16-Pin QFN Package
- APPLICATIONS
- Smart-Reflex™ DSPs
- POL Modules
- Telecom
TPS40197 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 |
| TPS40197RGYR |
ACTIVE |
-40 to 85 |
1.75 | 1ku |
VQFN (RGY) | 16 |
3000 | LARGE T&R |
40197 |
| TPS40197RGYT |
ACTIVE |
-40 to 85 |
1.95 | 1ku |
VQFN (RGY) | 16 |
250 | SMALL T&R |
40197 |
TPS40197 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 |
| TPS40197RGYR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
|
TPS40197RGYR |
| TPS40197RGYT |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
|
TPS40197RGYT |
TPS40197 应用技术支持与电子电路设计开发资源下载
- TPS40197 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)
TPS40197 相关工具
| 名称 |
型号 |
公司 |
工具/软件类型 |
| TPS40197 20V 输入、3.3V 输出、20A 评估模块 |
TPS40197EVM-001 |
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 |
TPS40197 参考设计
| 说明 |
型号 |
公司 |
| High-Frequency Synchronous Buck Converter for Optimized Efficiency |
PMP3080 |
Texas Instruments |
