TPS5120 具有宽输入电压范围的双路输出、二相同步降压控制器
TPS5120 描述
The TPS5120 is a dual channel, high-efficiency synchronous buck controller where the outputs run 180 degrees out of phase, which lowers the input current ripple, thereby reducing the input capacitance cost. The PWM/SKIP pin allows the operating mode to switch from PWM mode to skip mode under light load conditions. The skip mode enables a lower operating frequency and shortens the pulse width to the low-side MOSFET, increasing the efficiency under light load conditions. These two modes, along with synchronous-rectifier drivers, dead time, and very low quiescent current, allow power to be conserved and the battery life to be extended under all load conditions. The 1.5 A (typical) high-side and low-side MOSFET drivers on-chip are designed to drive less expensive N-channel MOSFETs.
|
TPS51020 |
TPS5120 |
TPS51221 |
TPS51222 |
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 |
TPS5120 特性
- Independent Dual-Outputs Operate 180° Out of Phase
- Wide Input Voltage Range: 4.5-V – 28-V
- Adjustable Output Voltage Down to 0.9 V
- Pin-Selectable PWM/SKIP Mode for High Efficiency Under Light Loads
- Synchronous Buck Operation Allows up to 95% Efficiency
- Separate Standby Control and Overcurrent Protection for Each Channel
- Programmable Short-Circuit Protection
- Low Supply (1 mA) and Shutdown (1 nA) Current
- Power Good Output
- High-Speed Error Amplifiers
- Sequencing Easily Achieved by Selecting Softstart Capacitor Values.
- 5-V Linear Regulator Power Internal IC Circuitry
- 30-Pin TSSOP Packaging
TPS5120 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 |
| TPS5120DBT |
ACTIVE |
-40 to 85 |
2.35 | 1ku |
TSSOP (DBT) | 30 |
60 | TUBE |
PS51020 |
| TPS5120DBTG4 |
ACTIVE |
-40 to 85 |
2.35 | 1ku |
TSSOP (DBT) | 30 |
60 | TUBE |
PS51020 |
| TPS5120DBTR |
ACTIVE |
-40 to 85 |
2.10 | 1ku |
TSSOP (DBT) | 30 |
2000 | LARGE T&R |
PS51020 |
| TPS5120DBTRG4 |
ACTIVE |
-40 to 85 |
2.10 | 1ku |
TSSOP (DBT) | 30 |
2000 | LARGE T&R |
PS51020 |
TPS5120 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 |
| TPS5120DBT |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
|
TPS5120DBT |
| TPS5120DBTG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
TPS5120DBTG4 |
TPS5120DBTG4 |
| TPS5120DBTR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
|
TPS5120DBTR |
| TPS5120DBTRG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
TPS5120DBTRG4 |
TPS5120DBTRG4 |
TPS5120 应用技术支持与电子电路设计开发资源下载
- TPS5120 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)
TPS5120 相关工具
TPS5120 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 |