TPS53125 Dual Synchronous Step-Down Controller for Low Voltage Power Rails
TPS53125 描述
The TPS53125 is a dual, adaptive on-time D-CAP2 mode synchronous buck controller. The part enables system designers to cost effectively complete the suite of various end equipment’s power bus regulators with a low external component count and low standby consumption. The main control loop for the TPS53125 uses the D-CAP2 Mode topology which provides a very fast transient response with no external component.
The TPS53125 also has a proprietary circuit that enables the device to adapt not only low equivalent series resistance (ESR) output capacitors such as POSCAP/SP-CAP, but also ceramic capacitor. The part provides a convenient and efficient operation with conversion voltages from 4.5 V to 24 V and output voltage from 0.
|
TPS53124 |
TPS53125 |
TPS53126 |
TPS53127 |
| Topology |
Buck, D-CAP™Mode |
Buck, D-CAP2™ Mode |
Buck, D-CAP2™ Mode |
Buck, D-CAP2™ Mode |
| Vin(Min)(V) |
4.5 |
4.5 |
4.5 |
4.5 |
| Vin(Max)(V) |
24 |
24 |
24 |
24 |
| Vout(Min)(V) |
0.76 |
0.76 |
0.76 |
0.76 |
| Vout(Max)(V) |
5.5 |
5.5 |
5.5 |
5.5 |
| Regulated Outputs(#) |
2 |
2 |
2 |
2 |
| Iout(Max)(A) |
15 |
15 |
15 |
15 |
| Switching Frequency(Max)(kHz) |
380 |
350 |
350, 700 |
700 |
| Iq(Typ)(mA) |
0.45 |
0.45 |
0.45 |
0.45 |
| Pin/Package |
24VQFN, 28TSSOP |
24TSSOP, 24VQFN |
24TSSOP, 24VQFN |
24TSSOP, 24VQFN |
| Thermal Shutdown |
Yes |
Yes |
Yes |
Yes |
| Vout2(Min)(V) |
0.76 |
0.76 |
0.76 |
0.76 |
| Vout2(Max)(V) |
5.5 |
5.5 |
5.5 |
5.5 |
| Iout2(A) |
15 |
15 |
15 |
15 |
| Rating |
Catalog |
Catalog |
Catalog |
Catalog |
| Duty Cycle(Max)(%) |
89 |
89 |
89 |
89 |
TPS53125 特性
- D-CAP2 Mode Control
- Fast Transient Response
- No External Parts Required for Loop Compensation
- Compatible With Ceramic Output Capacitors
- High Initial Reference Accuracy (±1%)
- Low Output Ripple
- Wide Input Voltage Range: 4.5 V to 24 V
- Output Voltage Range: 0.76 V to 5.5 V
- Low-Side RDS(ON) Loss-Less Current Sensing
- Adaptive Gate Drivers with Integrated Boost Diode
- Adjustable Soft Start
- Non-Sinking Pre-Biased Soft Start
- 350-kHz Switching Frequency
- Cycle-by-Cycle Over-Current Limiting Control
- 30-mV to 300-mV OCP Threshold Voltage
- Thermally Compensated OCP by 4000 ppm/°C at ITRIP
- APPLICATIONS
- Point-of-Load Regulation in Low Power Systems for Wide Range of Applications
- Digital TV Power Supply
- Networking Home Terminal
TPS53125 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 |
| TPS53125PW |
ACTIVE |
-40 to 85 |
2.15 | 1ku |
TSSOP (PW) | 24 |
50 | TUBE |
TPS53125 |
| TPS53125PWR |
ACTIVE |
-40 to 85 |
1.95 | 1ku |
TSSOP (PW) | 24 |
2000 | LARGE T&R |
TPS53125 |
| TPS53125RGER |
ACTIVE |
-40 to 85 |
1.95 | 1ku |
VQFN (RGE) | 24 |
3000 | LARGE T&R |
TPS53125 |
| TPS53125RGET |
ACTIVE |
-40 to 85 |
2.15 | 1ku |
VQFN (RGE) | 24 |
250 | SMALL T&R |
TPS53125 |
TPS53125 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 |
| TPS53125PW |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
|
TPS53125PW |
| TPS53125PWR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
|
TPS53125PWR |
| TPS53125RGER |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
|
TPS53125RGER |
| TPS53125RGET |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
|
TPS53125RGET |
TPS53125 应用技术支持与电子电路设计开发资源下载
- TPS53125 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)
TPS53125 相关工具
| 名称 |
型号 |
公司 |
工具/软件类型 |
| TPS53125EVM 高效双路同步降压控制器评估模块 |
TPS53125EVM |
Texas Instruments |
开发电路板/EVM |
TPS53125 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 |
