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UCC3810是一款高速BiCMOS控制器,集成了两个同步脉冲宽度调制器,可用于离线和DC-DC电源。 UCC3810系列通过使用相同的振荡器在两个PWM之间提供完美的同步。如果需要,振荡器的锯齿波形可用于斜率补偿。
使用切换触发器在调制器之间交替,UCC3810确保一个PWM不会从属,干扰或以其他方式影响其他PWM。该切换触发器还确保每个PWM限制在50%的最大占空比,确保足够的关断时间来复位磁性元件。该器件包含许多与UC3842电流模式控制器系列相同的元件,并结合了UCC3802的增强功能。这最大限度地减少了电源部件数量。增强功能包括电流检测信号的前沿消隐,全周期故障重启,CMOS输出驱动器以及即使电源电压消除也保持低电平的输出。
Topology |
Control Method |
Vin (Min) (V) |
Vin (Max) (V) |
Frequency (Max) (kHz) |
UVLO Thresholds On/Off (V) |
Duty Cycle (Max) (%) |
Gate Drive (Typ) (A) |
Features |
Rating |
Operating Temperature Range (C) |
Pin/Package |
UCC3810 | UCC2810 | UCC28220 | UCC28221 |
---|---|---|---|
Boost Buck Flyback Forward | Boost Flyback Forward | Flyback Forward | Flyback Forward |
Current | Current | Current | Current |
8.3 | 8.3 | 10 | 13 |
11 | 11 | 15 | 110 |
1000 | 1000 | 2000 | 2000 |
11.3/8.3 | 11.3/8.3 | 10.0/8.0 | 13.0/8.0 |
50 | 50 | 90 | 90 |
1 | 1 | 0.01 | 0.01 |
Adjustable Switching Frequency Error Amplifier Leading Edge Blanking Multi-topology Programmable Max Duty Cycle Soft Start Synchronization Pin | Adjustable Switching Frequency Error Amplifier Leading Edge Blanking Multi-topology Programmable Max Duty Cycle Soft Start Synchronization Pin | Adjustable Switching Frequency Current Limiting Input Line Monitor Multi-topology Programmable Max Duty Cycle Programmable Slope Compensation Soft Start | Adjustable Switching Frequency Current Limiting HV Start-up Input Line Monitor Multi-topology Programmable Max Duty Cycle Programmable Slope Compensation Soft Start |
Catalog | Catalog | Catalog | Catalog |
0 to 70 | -40 to 85 | -40 to 105 | -40 to 105 |
16PDIP 16SOIC | 16PDIP 16SOIC | 16SOIC 16TSSOP | 16SOIC 20TSSOP |