TPS54350 4.5V 至 20V、3A 同步降压 SWIFT™ 转换器
TPS54350 描述
The TPS54350 is a medium output current synchronous buck PWM converter with an integrated high side MOSFET and a gate driver for an optional low side external MOSFET. Features include a high performance voltage error amplifier that enables maximum performance under transient conditions and flexibility in choosing the output filter inductors and capacitors. The TPS54350 has an under-voltage-lockout circuit to prevent start-up until the input voltage reaches 4.5 V; an internal slow-start circuit to limit in-rush currents; and a power good output to indicate valid output conditions. The synchronization feature is configurable as either an input or an output for easy 180° out of phase synchronization.
The TPS54350 device is available in a thermally enhanced 16-pin TSSOP (PWP) PowerPAD™ package.
|
TPS54060 |
TPS54160 |
TPS54260 |
TPS54350 |
TPS54350 |
TPS5450 |
TPS54550 |
| Iout(Max)(A) |
0.5 |
1.5 |
2.5 |
3 |
3 |
5 |
6 |
| Vin(Min)(V) |
3.5 |
3.5 |
3.5 |
5.5 |
4.5 |
5.5 |
4.5 |
| Vin(Max)(V) |
60 |
60 |
60 |
36 |
20 |
36 |
20 |
| Vout(Min)(V) |
0.8 |
0.8 |
0.8 |
1.23 |
0.9 |
1.22 |
0.9 |
| Vout(Max)(V) |
58 |
58 |
58 |
31 |
12 |
31 |
12 |
| Iq(Typ)(mA) |
0.116 |
0.116 |
0.138 |
3 |
5 |
3 |
9 |
| Switching Frequency(Max)(kHz) |
2500 |
2500 |
2500 |
|
700 |
500 |
700 |
| Switching Frequency(Typ)(kHz) |
|
|
|
500 |
|
|
|
| Switch Current Limit(Typ)(A) |
0.6 |
1.8 |
3.5 |
4 |
3.3 |
6 |
7.5 |
| Topology |
Buck, Inverting Buck/Boost |
Buck, Inverting Buck/Boost |
Buck ,Inverting Buck/Boost |
Buck, Inverting Buck/Boost |
Buck, Inverting Buck/Boost |
Buck |
Buck |
| Operating Temperature Range(°C) |
-40 to 150 |
-40 to 150 |
-40 to 150 |
-40 to 125 |
-40 to 150,-40 to 150) |
-40 to 125 |
-40 to 150 |
| Pin/Package |
10MSOP-PowerPAD |
10MSOP-PowerPAD |
10MSOP-PowerPAD |
8SO PowerPAD |
16HTSSOP |
8SO PowerPAD |
16HTSSOP |
| Rating |
Catalog |
Catalog |
Catalog |
Catalog |
Catalog |
Catalog |
Catalog |
| Duty Cycle(Max)(%) |
98 |
98 |
98 |
87 |
80 |
89 |
80 |
| Regulated Outputs(#) |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
| Thermal Shutdown |
Yes |
Yes |
Yes |
Yes |
yes |
|
yes |
TPS54350 特性
- 100 mΩ, 4.5-A Peak MOSFET Switch for High Efficiency at 3-A Continuous Output Current
- Uses External Lowside MOSFET or Diode
- Output Voltage Adjustable Down to 0.891 V With 1% Accuracy
- Synchronizes to External Clock
- 180° Out of Phase Synchronization
- Wide PWM Frequency – Fixed 250 kHz, 500 kHz or Adjustable 250 kHz to 700 kHz
- Internal Slow Start
- Load Protected by Peak Current Limit and Thermal Shutdown
- Adjustable Undervoltage Lockout
- 16-Pin TSSOP PowerPAD™ Package
- APPLICATIONS
- Industrial & Commercial Low Power Systems
- LCD Monitors and TVs
- Computer Peripherals
- Point of Load Regulation for High Performance DSPs, FPGAs, ASICs and Microprocessors
TPS54350 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 |
| TPS54350PWP |
ACTIVE |
-40 to 150 |
2.05 | 1ku |
HTSSOP (PWP) | 16 |
90 | TUBE |
PS54350 |
| TPS54350PWPG4 |
ACTIVE |
-40 to 150 |
2.05 | 1ku |
HTSSOP (PWP) | 16 |
90 | TUBE |
PS54350 |
| TPS54350PWPR |
ACTIVE |
-40 to 150 |
1.85 | 1ku |
HTSSOP (PWP) | 16 |
2000 | LARGE T&R |
PS54350 |
| TPS54350PWPRG4 |
ACTIVE |
-40 to 150 |
1.85 | 1ku |
HTSSOP (PWP) | 16 |
2000 | LARGE T&R |
PS54350 |
TPS54350 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 |
| TPS54350PWP |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
|
TPS54350PWP |
| TPS54350PWPG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
TPS54350PWPG4 |
TPS54350PWPG4 |
| TPS54350PWPR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
|
TPS54350PWPR |
| TPS54350PWPRG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
TPS54350PWPRG4 |
TPS54350PWPRG4 |
TPS54350 应用技术支持与电子电路设计开发资源下载
- TPS54350 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)
TPS54350 相关工具
| 名称 |
型号 |
公司 |
工具/软件类型 |
| 3A， 输入电压为 4.5V 至 20V 且输出电压可调节的 DC/DC 转换器 |
TPS54350EVM-235 |
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 |
