The TPS51124 is a dual, adaptive on-time D-CAP™ mode synchronous buck controller. The part enables system designers to cost effectively complete the suite of notebook power bus regulators with the absolute lowest external component count and lowest standby consumption. The fixed frequency emulated adaptive on-time control supports seamless operation between PWM mode at heavy load condition and reduced frequency operation at light load for high efficiency down to milliampere range. The main control loop for the TPS51124 uses the D-CAP mode that optimized for low ESR output capacitors such as POSCAP or SP-CAP promises fast transient response with no external compensation. Simple and separate power good signals for each channel allow flexibility of power sequencing.
| TPS51120 | TPS51123 | TPS51124 | TPS51125A | TPS51220 | TPS51220A | |
| Topology | Buck,D-CAP™ Mode | Buck,D-CAP™ Mode | Buck,D-CAP™ Mode | Buck,D-CAP™ Mode | Buck,D-CAP™ Mode | Buck,D-CAP™ Mode |
| Vin(Min)(V) | 4.5 | 5.5 | 3 | 5.5 | 4.5 | 4.5 |
| Vin(Max)(V) | 28 | 28 | 28 | 28 | 28 | 32 |
| Vout(Min)(V) | 1.05 | 2.0 | 0.76 | 2 | 1 | 1 |
| Vout(Max)(V) | 5.5 | 5.5 | 5.5 | 5.5 | 12 | 12 |
| Regulated Outputs(#) | 2 | 2 | 2 | 2 | 2 | 2 |
| Iout(Max)(A) | 20 | 20 | 15 | 20 | 20 | 20 |
| Switching Frequency(Max)(kHz) | 580 | 460 | 420 | 460 | 1000 | 1000 |
| Iq(Typ)(mA) | 0.75 | 0.55 | 0.35 | 0.55 | 1.3 | 1.3 |
| Pin/Package | 32QFN | 24VQFN | 24VQFN | 24VQFN | 32QFN | 32QFN |
| Thermal Shutdown | Yes | Yes | Yes | Yes | Yes | Yes |
| Vout2(Min)(V) | 1.05 | 2.0 | 0.76 | 2 | 1 | 1 |
| Vout2(Max)(V) | 5.5 | 5.5 | 5.5 | 5.5 | 12 | 12 |
| Iout2(A) | 20 | 20 | 20 | 20 | 20 | 20 |
| Rating | Catalog | Catalog | Catalog | Catalog | Catalog | Catalog |
| Duty Cycle(Max)(%) | 88 | 93 | 88 | 93 | 99 | 99 |
| 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 |
| TPS51124RGER | ACTIVE | -40 to 85 | 2.10 | 1ku | VQFN (RGE) | 24 | 3000 | LARGE T&R | TPS 51124 |
| TPS51124RGERG4 | ACTIVE | -40 to 85 | 2.10 | 1ku | VQFN (RGE) | 24 | 3000 | LARGE T&R | TPS 51124 |
| TPS51124RGET | ACTIVE | -40 to 85 | 2.35 | 1ku | VQFN (RGE) | 24 | 250 | SMALL T&R | TPS 51124 |
| TPS51124RGETG4 | ACTIVE | -40 to 85 | 2.35 | 1ku | VQFN (RGE) | 24 | 250 | SMALL T&R | TPS 51124 |
| 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 |
| TPS51124RGER | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-2-260C-1 YEAR | TPS51124RGER | |
| TPS51124RGERG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-2-260C-1 YEAR | TPS51124RGERG4 | TPS51124RGERG4 |
| TPS51124RGET | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-2-260C-1 YEAR | TPS51124RGET | |
| TPS51124RGETG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-2-260C-1 YEAR | TPS51124RGETG4 | TPS51124RGETG4 |
| 名称 | 型号 | 公司 | 工具/软件类型 |
| Highly Efficient, Dual Synchronous Buck Converter Evaluation Module | TPS51124EVM-001 | Texas Instruments | 开发电路板/EVM |
| 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 |
