TPS40040 具有使能端的 2.25V 至 5.5V 输入的 8 引脚 DC/DC 控制器
|
TPS40040 |
TPS40041 |
TPS40042 |
| Topology |
Buck |
Buck |
Buck |
| Vin(Min)(V) |
2.25 |
2.25 |
3.0 |
| Vin(Max)(V) |
5.5 |
5.5 |
5.5 |
| Vout(Min)(V) |
0.6 |
0.6 |
0.6 |
| Vout(Max)(V) |
4.95 |
4.84 |
4.95 |
| Regulated Outputs(#) |
1 |
1 |
1 |
| Iout(Max)(A) |
15 |
15 |
15 |
| Switching Frequency(Max)(kHz) |
300 |
600 |
600 |
| Iq(Typ)(mA) |
2 |
2 |
2 |
| Pin/Package |
8SON |
8SON |
10SON |
| Thermal Shutdown |
Yes |
Yes |
Yes |
| Rating |
Catalog |
Catalog |
Catalog |
| Duty Cycle(Max)(%) |
90 |
88 |
90 |
TPS40040 描述
The TPS40040 and TPS40041 dc-to-dc controllers are designed to operate from a 2.25-V to 5.5-V input source. To reduce the number of external components, several operating parameters are fixed internally; namely, frequency, soft start time, and short circuit protection (SCP) levels. For example, the operating frequencies of TPS40040/1 are 300 kHz/600 kHz, respectively.
One of three short circuit threshold levels may be selected by the addition of an external resistor from the COMP pin to circuit ground. During power on, and before the internal soft start commands the output voltage to rise, the TPS40040/1 enters a calibration cycle, measures the current out of the COMP pin, and selects an internal SCP threshold voltage.
TPS40040 特性
- 2.25-V to 5.5-V Input
- Output Voltage from 0.6 V to 90% of VIN
- High-Side Drive for N-Channel FET
- Supports Pre-Biased Outputs
- Adaptive Anti-Cross Conduction Gate Drive
- 1%, 0.6-V Reference
- Two Fixed Switching Frequency Versions, TPS40040 (300 kHz) and TPS40041 (600 kHz)
- Three Selectable Short Circuit Protection Levels of 105 mV, 180 mV and 310 mV
- Hiccup Restart from Faults
- Voltage Mode Control
- Active Low Enable
- Thermal Shutdown Protection at 145°C
- 8-Pin, 3-mm × 3-mm SON with Ground Connection to Thermal Pad
- APPLICATIONS
- Point of Load
- Telecommunications
- DC to DC Modules
- Set Top Boxes
TPS40040 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 |
| TPS40040DRBR |
ACTIVE |
-40 to 85 |
0.90 | 1ku |
SON (DRB) | 8 |
3000 | LARGE T&R |
0040 |
| TPS40040DRBRG4 |
ACTIVE |
-40 to 85 |
0.90 | 1ku |
SON (DRB) | 8 |
3000 | LARGE T&R |
0040 |
| TPS40040DRBT |
ACTIVE |
-40 to 85 |
0.99 | 1ku |
SON (DRB) | 8 |
250 | SMALL T&R |
0040 |
| TPS40040DRBTG4 |
ACTIVE |
-40 to 85 |
0.99 | 1ku |
SON (DRB) | 8 |
250 | SMALL T&R |
0040 |
TPS40040 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 |
| TPS40040DRBR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
|
TPS40040DRBR |
| TPS40040DRBRG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
TPS40040DRBRG4 |
TPS40040DRBRG4 |
| TPS40040DRBT |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
|
TPS40040DRBT |
| TPS40040DRBTG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
TPS40040DRBTG4 |
TPS40040DRBTG4 |
TPS40040 应用技术支持与电子电路设计开发资源下载
- TPS40040 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)
TPS40040 参考设计
| 名称 |
型号 |
公司 |
工具/软件类型 |
| 5V 输入、1.8V 输出、10A 同步降压评估模块 |
TPS40040EVM-001 |
Texas Instruments |
开发电路板/EVM |
| TPS40041 5V 输入、1.8V 输出、6A 评估模块 |
TPS40041EVM-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 |