完善资料让更多小伙伴认识你,还能领取20积分哦,立即完善>
数据: UCC28950 Green Phase-Shifted Full-Bridge Controller With Synchronous Rectification 数据表
UCC28950增强型相移控制器基于德州仪器的行业标准UCx895相移控制器系列,其增强功能可提供当今高性能电源的最佳效率系统。 UCC28950实现了对全桥的高级控制以及同步整流器输出级的主动控制。
初级侧信号允许可编程延迟,以确保ZVS在宽负载电流和输入电压范围内工作,而负载电流自然地调整次级侧同步整流器的开关延迟,从而最大限度地提高整体系统效率。
UCC28950还提供多种轻载管理功能,包括突发模式和动态SR开/关控制,当进入和退出不连续电流模式(DCM)操作时,确保ZVS操作延长至更轻负载。
此外,UCC28950还支持电流或电压模式控制。可编程开关频率高达1 MHz,具有多种保护功能,包括逐周期电流限制,UVLO和热关断。可以在两个转换器之间轻松安排90度相移交错同步操作。
UCC28950采用TSSOP-24封装。
对于所有可用封装,请参见可订购的附录。数据表的结尾。
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 |
UCC28950 | LM5046 | UCC2895 | UCC3895 |
---|---|---|---|
Phase-Shifted Full-Bridge | Phase-Shifted Full-Bridge | Phase-Shifted Full-Bridge | Phase-Shifted Full-Bridge |
Current Voltage | Current Voltage | Current Feedforward Voltage | Current Feedforward Voltage |
7.3 | 14 | 11 | 11 |
20 | 105 | 17 | 17 |
1000 | 2000 | 1000 | 1000 |
7.3/6.75 | Programmable/1.25V | 11/9 | 11/9 |
95 | 50 | 100 | 100 |
0.2 | 1.5 2 | 0.1 | 0.1 |
Adjustable Switching Frequency Current Limiting Error Amplifier Light Load Efficiency Multi-topology Soft Start Soft Switching Synchronization Pin | Adjustable Switching Frequency Current Limiting Error Amplifier HV Start-up Soft Start Soft Switching | Adjustable Switching Frequency Current Limiting Error Amplifier Multi-topology Soft Start Soft Switching Synchronization Pin | Adjustable Switching Frequency Current Limiting Error Amplifier Multi-topology Soft Start Soft Switching Synchronization Pin |
Catalog | Catalog | Catalog | Catalog |
-40 to 125 | -40 to 125 | -40 to 85 | 0 to 70 |
24TSSOP | 28HTSSOP 28WQFN | 20PDIP 20SOIC 20TSSOP | 20PDIP 20SOIC 20TSSOP |