The TPS54550 is a medium output current synchronous buck PWM converter with an integrated high side MOSFET and a gate driver for an 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 TPS54550 has an under-voltage-lockout circuit to prevent start-up until the input voltage reaches 4.5 V; a 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 TPS54550 device is available in a thermally enhanced 16-pin TSSOP (PWP) PowerPADTM package.
| TPS54060 | TPS54160 | TPS54260 | TPS5430 | 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 |
| 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 |
| TPS54550PWP | ACTIVE | -40 to 150 | 2.05 | 1ku | HTSSOP (PWP) | 16 | 90 | TUBE | PS54550 |
| TPS54550PWPG4 | ACTIVE | -40 to 150 | 2.05 | 1ku | HTSSOP (PWP) | 16 | 90 | TUBE | PS54550 |
| TPS54550PWPR | ACTIVE | -40 to 150 | 1.85 | 1ku | HTSSOP (PWP) | 16 | 2000 | LARGE T&R | PS54550 |
| TPS54550PWPRG4 | ACTIVE | -40 to 150 | 1.85 | 1ku | HTSSOP (PWP) | 16 | 2000 | LARGE T&R | PS54550 |
| 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 |
| TPS54550PWP | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | TPS54550PWP | |
| TPS54550PWPG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | TPS54550PWPG4 | TPS54550PWPG4 |
| TPS54550PWPR | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | TPS54550PWPR | |
| TPS54550PWPRG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | TPS54550PWPRG4 | TPS54550PWPRG4 |
| 名称 | 型号 | 公司 | 工具/软件类型 |
| 6-17V 输入 5A 同步降压转换器模块 | TPS54550EVM-158 | 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 |
| 说明 | 型号 | 公司 |
| Synchronous Buck Controller Doubles as a 2-A Buck Boost Inverter | PMP2933 | Texas Instruments |