TPS40074 具有电压前馈的中等范围输入同步降压控制器
|
TPS40074 |
| Topology |
Buck |
| Vin(Min)(V) |
4.5 |
| Vin(Max)(V) |
28 |
| Vout(Min)(V) |
0.7 |
| Vout(Max)(V) |
23 |
| Regulated Outputs(#) |
1 |
| Iout(Max)(A) |
20 |
| Switching Frequency(Max)(kHz) |
1000 |
| Iq(Typ)(mA) |
1.5 |
| Pin/Package |
20QFN |
| Thermal Shutdown |
Yes |
| Rating |
Catalog |
| Duty Cycle(Max)(%) |
84 |
TPS40074 描述
The TPS40074 is a mid voltage, wide input (4.5-V to 28-V), synchronous, step-down controller, offering design flexibility for a variety of user programmable functions, including; soft start, UVLO, operating frequency, voltage feed-forward and high-side FET sensed short circuit protection.
The TPS40074 incorporates MOSFET gate drivers for external N-channel high side and synchronous rectifier (SR) MOSFETs. The gate drive logic incorporates second generation predictive anti-cross conduction circuitry to prevent simultaneous high side and synchronous rectifier conduction, while minimizing to eliminating current flow in the body diode of the SR FET. The TPS40074 allows for starting into pre-biased outputs by not allowing the synchronous rectifier FET to turn on until the commanded voltage during soft start is greater than the existing pre-bias voltage.
TPS40074 特性
- Operation Over 4.5-V to 28-VInput Range
- Fixed-Frequency Voltage-Mode Controller
- Integrated Unity Gain Amplifier for Remote Output Sensing
- Predictive Gate Drive™ Generation II for Improved Efficiency
- < 1% Internal 700-mV Reference
- Input Voltage Feed Forward Control
- Prebiased Output Compatible
- Internal Gate Drive Outputs for High-Side and Synchronous N-Channel MOSFETs
- Switching Frequency Programmable to 1 MHz
- 20-Pin QFN Package
- Thermal Shutdown Protection
- Software Design Tool and EVM Available
- APPLICATIONS
- Power Modules
- Networking/Telecom
- Industrial
- Servers
TPS40074 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 |
| TPS40074RHLR |
ACTIVE |
-40 to 85 |
1.35 | 1ku |
QFN (RHL) | 20 |
3000 | LARGE T&R |
40074 |
| TPS40074RHLRG4 |
ACTIVE |
-40 to 85 |
1.35 | 1ku |
QFN (RHL) | 20 |
3000 | LARGE T&R |
40074 |
| TPS40074RHLT |
ACTIVE |
-40 to 85 |
1.50 | 1ku |
QFN (RHL) | 20 |
250 | SMALL T&R |
40074 |
| TPS40074RHLTG4 |
ACTIVE |
-40 to 85 |
1.50 | 1ku |
QFN (RHL) | 20 |
250 | SMALL T&R |
40074 |
TPS40074 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 |
| TPS40074RHLR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
|
TPS40074RHLR |
| TPS40074RHLRG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
TPS40074RHLRG4 |
TPS40074RHLRG4 |
| TPS40074RHLT |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
|
TPS40074RHLT |
| TPS40074RHLTG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
TPS40074RHLTG4 |
TPS40074RHLTG4 |
TPS40074 应用技术支持与电子电路设计开发资源下载
- TPS40074 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)
TPS40074 相关工具
| 名称 |
型号 |
公司 |
工具/软件类型 |
| TPS40074 评估模块 |
TPS40074EVM-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 |
TPS40074 参考设计
| 说明 |
型号 |
公司 |
| 非隔离 PoE PD 电源参考设计 |
PMP841 |
Texas Instruments |
