UCC28881 在单片器件中集成了控制器和 14Ω、700V 功率 MOSFET。该器件还集成了高电压电流源,能够在经整流的市电电压下直接启动和运行。UCC28881 与 UCC28880 属于同一器件系列,具备高电流处理能力。
该器件的静态电流较低,能够提供出色的效率。凭借 UCC28881,使用最少的外部组件即可构建降压、降压/升压以及反激拓扑等最常用的转换器拓扑。
UCC28881 集成了控制功率级启动的软启动功能,能够最大程度地减小功率级组件所受的压力。
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| Control mode | Voltage |
| UVLO thresholds on/off (V) | 3.9/3.6 |
| Duty cycle (max) (%) | 55 |
| Switching frequency (max) (kHz) | 62 |
| Features | Current limiting, Green mode, High voltage startup, High-voltage startup, Integrated Switch, Leading edge blanking, Light load efficiency, Light-load efficiency, Low power, Overcurrent protection, Overtemperature protection, Soft start, Thermal shutdown |
| Operating temperature range (°C) | -40 to 125 |
| Rating | Catalog |
| Device type | Controllers |
| Topology | Buck, Buck boost, Buck-Boost, Flyback |
| SOIC (D) | 7 | 29.4 mm² 4.9 x 6 |