TPS40305 高功率密度、高效的 1.2MHz 3V 至 20V 宽输入同步降压控制器
TPS40305 描述
The TPS4030x is a family of cost-optimized synchronous buck controllers that operate from 3-V to 20-V input. The controller implements a voltage-mode control architecture with input-voltage feed-forward compensation that responds instantly to input voltage change. The switching frequency is fixed at 300 KHz, 600 KHz or 1.2 MHz.
Frequency Spread Spectrum feature adds dither to the switching frequency, significantly reducing the peak EMI noise and making it much easier to comply with EMI standards.
The TPS4030x offers design with a variety of user programmable functions, including soft-start, Over- Current Protection (OCP) levels, and loop compensation.
OCP level may be programmed by a single external resistor connected from LDRV pin to circuit ground
|
TPS40303 |
TPS40304 |
TPS40305A |
TPS40305 |
| Topology |
Buck |
Buck |
Buck |
Buck |
| Vin(Min)(V) |
3 |
3 |
3 |
3 |
| Vin(Max)(V) |
20 |
20 |
20 |
20 |
| Regulated Outputs(#) |
1 |
1 |
1 |
1 |
| Iout(Max)(A) |
25 |
25 |
25 |
25 |
| Switching Frequency(Max)(kHz) |
300 |
600 |
600 |
1200 |
| Pin/Package |
10SON |
10SON |
10SON |
10SON |
| Thermal Shutdown |
Yes |
Yes |
Yes |
Yes |
| Rating |
Catalog |
Catalog |
Catalog |
Catalog |
| Duty Cycle(Max)(%) |
90 |
90 |
90 |
85 |
TPS40305 特性
- Input Voltage Range from 3 V to 20 V
- 300 KHz (TPS40303), 600 KHz (TPS40304) and 1.2 MHz (TPS40305) Switching Frequencies
- High- and Low-Side FET RDS(on) Current Sensing
- Programmable Thermally Compensated OCP Levels
- Programmable Soft-Start
- 600 mV, 1% Reference Voltage
- Voltage Feed-Forward Compensation
- Supports Pre-Biased Output
- Frequency Spread Spectrum
- Thermal Shutdown Protection at 145°C
- 10-Pin 3 mm × 3 mm SON Package with Ground Connection to Thermal Pad
- APPLICATIONS
- POL Modules
- Printer
- Digital TV
- Telecom
TPS40305 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 |
| TPS40305DRCR |
ACTIVE |
-40 to 125 |
1.40 | 1ku |
SON (DRC) | 10 |
3000 | LARGE T&R |
0305 |
| TPS40305DRCT |
ACTIVE |
-40 to 125 |
1.55 | 1ku |
SON (DRC) | 10 |
250 | SMALL T&R |
0305 |
TPS40305 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 |
| TPS40305DRCR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
|
TPS40305DRCR |
| TPS40305DRCT |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
|
TPS40305DRCT |
TPS40305 应用技术支持与电子电路设计开发资源下载
- TPS40305 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)
TPS40305 相关工具
| 名称 |
型号 |
公司 |
工具/软件类型 |
| DualCoolTM NexFETTM 功率 MOSFET 和 TPS40304 降压控制器评估模块 |
CSD163CEVM-591 |
Texas Instruments |
开发电路板/EVM |
| 具有 NexFETTM 功率 MOSFET 的 8-14V 输入电压、1.8V 输出电压同步降压控制器评估模块 |
TPS40305EVM-488 |
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 |
TPS40305 参考设计
| 说明 |
型号 |
公司 |
| Buck Converter with Minimum Component Count to Drive LEDs |
PMP2493 |
Texas Instruments |