TPS54357 具有 5.0V 输出电压的 4.5V 至 20V、3A 同步降压 SWIFTTM 转换器
TPS54357 描述
The TPS5435x 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. The TPS5435x has an under-voltage-lockout circuit to prevent start-up until the input voltage reaches a preset value; 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 TPS5435x devices are available in a thermally enhanced 16-pin TSSOP (PWP) PowerPADTM package
|
TPS54352 |
TPS54353 |
TPS54354 |
TPS54355 |
TPS54356 |
TPS54357 |
| Iout(Max)(A) |
3 |
3 |
3 |
3 |
3 |
3 |
| Vin(Min)(V) |
4.5 |
4.5 |
4.5 |
4.5 |
4.5 |
6.5 |
| Vin(Max)(V) |
20 |
20 |
20 |
20 |
20 |
20 |
| Vout(Min)(V) |
1.2 |
1.5 |
1.8 |
2.5 |
3.3 |
5.0 |
| Vout(Max)(V) |
1.2 |
1.5 |
1.8 |
2.5 |
3.3 |
5.0 |
| Preset Vout(V) |
1.2 |
1.5 |
1.8 |
2.5 |
3.3 |
5 |
| Iq(Typ)(mA) |
9 |
9 |
9 |
9 |
9 |
9 |
| Switching Frequency(Max)(kHz) |
700 |
700 |
700 |
700 |
700 |
700 |
| Switch Current Limit(Typ)(A) |
3.3 |
3.3 |
3.3 |
3.3 |
3.3 |
3.3 |
| Topology |
Buck |
Buck |
Buck |
Buck |
Buck |
Buck |
| Operating Temperature Range(°C) |
-40 to 85 |
-40 to 85 |
-40 to 85 |
-40 to 85 |
-40 to 85 |
-40 to 85 |
| Pin/Package |
16HTSSOP |
16HTSSOP |
16HTSSOP |
16HTSSOP |
16HTSSOP |
16HTSSOP |
| Rating |
Catalog |
Catalog |
Catalog |
Catalog |
Catalog |
Catalog |
| Duty Cycle(Max)(%) |
80 |
80 |
80 |
80 |
80 |
80 |
| Regulated Outputs(#) |
1 |
1 |
1 |
1 |
1 |
1 |
| Thermal Shutdown |
yes |
yes |
yes |
yes |
yes |
yes |
TPS54357 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
- Fixed Output Versions — 1.2V/1.5V/1.8V/2.5V/3.3V/5.0V
- Internally Compensated for Low Parts Count
- 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 PowerPADTM 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
TPS54357 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 |
| TPS54357PWP |
ACTIVE |
-40 to 85 |
2.05 | 1ku |
HTSSOP (PWP) | 16 |
90 | TUBE |
PS54357 |
| TPS54357PWPG4 |
ACTIVE |
-40 to 85 |
2.05 | 1ku |
HTSSOP (PWP) | 16 |
90 | TUBE |
PS54357 |
| TPS54357PWPR |
ACTIVE |
-40 to 85 |
1.85 | 1ku |
HTSSOP (PWP) | 16 |
2000 | LARGE T&R |
PS54357 |
| TPS54357PWPRG4 |
ACTIVE |
-40 to 85 |
1.85 | 1ku |
HTSSOP (PWP) | 16 |
2000 | LARGE T&R |
PS54357 |
TPS54357 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 |
| TPS54357PWP |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
|
TPS54357PWP |
| TPS54357PWPG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
TPS54357PWPG4 |
TPS54357PWPG4 |
| TPS54357PWPR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
|
TPS54357PWPR |
| TPS54357PWPRG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
TPS54357PWPRG4 |
TPS54357PWPRG4 |
TPS54357 应用技术支持与电子电路设计开发资源下载
- TPS54357 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)
TPS54357 相关工具
| 名称 |
型号 |
公司 |
工具/软件类型 |
| 具有固定 3.3V 输出电压、3A、4.5-20V 输入电压的 DC/DC 转换器 |
TPS54357EVM-058 |
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 |