TPS5124 双通道同步步降 PWM 控制器
TPS5124 描述
The TPS5124 is dual independent high efficiency synchronous step-down controller. It supports a low-voltage/high-current power supply applications that use either a 5-V or 12-V bus voltage. Since both controllers of the TPS5124 operate 180 degree out-of-phase, the input current ripple is minimized resulting in a smaller input capacitance and reduced power supply cost.
The current protection circuit detects the drain-to-source voltage drop across the high-side and low-side power MOSFET while it is conducting. Also, the current protection circuit has a temperature coefficient to compensate for the RDS(on) variation of the MOSFET. This resistor-less current protection and built-in boost diode simplify the system design and reduces the external parts count
|
TPS51020 |
TPS5120 |
TPS51221 |
TPS5122 |
TPS5124 |
| Topology |
Buck |
Buck |
Buck |
Buck |
Buck |
| Vin(Min)(V) |
4.5 |
4.5 |
4.5 |
4.5 |
4.5 |
| Vin(Max)(V) |
28 |
28 |
28 |
32 |
15 |
| Vout(Min)(V) |
0.9 |
0.9 |
1 |
1 |
0.9 |
| Vout(Max)(V) |
24 |
26 |
12 |
12 |
12 |
| Regulated Outputs(#) |
2 |
2 |
2 |
2 |
2 |
| Iout(Max)(A) |
20 |
20 |
20 |
20 |
20 |
| Switching Frequency(Max)(kHz) |
450 |
500 |
1000 |
1000 |
500 |
| Iq(Typ)(mA) |
1.4 |
1.1 |
1.3 |
|
1.1 |
| Pin/Package |
30TSSOP |
30TSSOP |
32QFN |
32QFN |
30TSSOP |
| Thermal Shutdown |
Yes |
Yes |
Yes |
Yes |
No |
| Vout2(Min)(V) |
0.9 |
0.9 |
1 |
1 |
0.9 |
| Vout2(Max)(V) |
24 |
26 |
12 |
12 |
12 |
| Iout2(A) |
20 |
15 |
20 |
20 |
20 |
| Rating |
Catalog |
Catalog |
Catalog |
Catalog |
Catalog |
| Duty Cycle(Max)(%) |
88 |
80 |
99 |
99 |
80 |
TPS5124 特性
- High Efficiency – No Current Sense Resistor Required, RDS(on) Overcurrent Detection with Temperature Compensation
- Adjustable Output Voltage Down to 0.9 V
- Voltage-Mode PWM Control: Maximum 500-kHz Operation
- 180° Out-of-Phase Control
- Individual Standby and Soft-Start for Each Channel - Easy Power Sequencing
- Overvoltage and Undervoltage Protection
- Built-In Boot-Strap Diode
- Built-In 5-V Linear Regulator
- Accurate ± 1% 0.85-V Reference
- APPLICATIONS
- Consumer Game Systems
- DSP Applications
- Digital Set-Top Box
- VGA and Sound Cards
TPS5124 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 |
| TPS5124DBT |
ACTIVE |
-40 to 85 |
2.20 | 1ku |
TSSOP (DBT) | 30 |
60 | TUBE |
PS5124 |
| TPS5124DBTG4 |
ACTIVE |
-40 to 85 |
2.20 | 1ku |
TSSOP (DBT) | 30 |
60 | TUBE |
PS5124 |
| TPS5124DBTR |
ACTIVE |
-40 to 85 |
2.00 | 1ku |
TSSOP (DBT) | 30 |
2000 | LARGE T&R |
PS5124 |
| TPS5124DBTRG4 |
ACTIVE |
-40 to 85 |
2.00 | 1ku |
TSSOP (DBT) | 30 |
2000 | LARGE T&R |
PS5124 |
TPS5124 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 |
| TPS5124DBT |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
|
TPS5124DBT |
| TPS5124DBTG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
TPS5124DBTG4 |
TPS5124DBTG4 |
| TPS5124DBTR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
|
TPS5124DBTR |
| TPS5124DBTRG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
TPS5124DBTRG4 |
TPS5124DBTRG4 |
TPS5124 应用技术支持与电子电路设计开发资源下载
- TPS5124 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)
TPS5124 相关工具
| 名称 |
型号 |
公司 |
工具/软件类型 |
| 双同步降压控制器评估模块 |
TPS5124EVM |
Texas Instruments |
开发电路板/EVM |
| TPS51100EVM-001 评估模块 |
TPS51100EVM-001 |
Texas Instruments |
开发电路板/EVM |
| TPS51116EVM-001 评估模块 |
TPS51116EVM-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 |
TPS5124 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 |