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UCC3895是一個相移PWM控制器,通過相移一個半橋的開關來實現(xiàn)全橋功率級的控制。另一個。該器件允許恒定頻率脈沖寬度調制和諧振零電壓開關,以在高頻率下提供高效率。該器件既可用作電壓模式,也可用作電流模式控制器。
雖然UCC3895保持了UC3875 /6/7/8系列和UC3879的功能,但它還增加了該控制器系列的功能。增強控制邏輯,自適應延遲設置和關閉功能等功能。由于該器件采用BCDMOS工藝制造,因此其工作電源電流遠低于雙極性器件。 UCC3895的最大時鐘頻率為1 MHz。
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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 |
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UCC3895 | LM5046 | UCC2895 | UCC28950 |
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Phase-Shifted Full-Bridge ? ? | Phase-Shifted Full-Bridge ? ? | Phase-Shifted Full-Bridge ? ? | Phase-Shifted Full-Bridge ? ? |
Current Feedforward Voltage ? ? | Current Voltage ? ? | Current Feedforward Voltage ? ? | Current Voltage ? ? |
11 ? ? | 14 ? ? | 11 ? ? | 7.3 ? ? |
17 ? ? | 105 ? ? | 17 ? ? | 20 ? ? |
1000 ? ? | 2000 ? ? | 1000 ? ? | 1000 ? ? |
11/9 ? ? | Programmable/1.25V ? ? | 11/9 ? ? | 7.3/6.75 ? ? |
100 ? ? | 50 ? ? | 100 ? ? | 95 ? ? |
0.1 ? ? | 1.5 2 ? ? | 0.1 ? ? | 0.2 ? ? |
Adjustable Switching Frequency Current Limiting Error Amplifier 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 Light Load Efficiency Multi-topology Soft Start Soft Switching Synchronization Pin ? ? |
Catalog ? ? | Catalog ? ? | Catalog ? ? | Catalog ? ? |
0 to 70 ? ? | -40 to 125 ? ? | -40 to 85 ? ? | -40 to 125 ? ? |
20PDIP 20SOIC 20TSSOP ? ? | 28HTSSOP 28WQFN ? ? | 20PDIP 20SOIC 20TSSOP ? ? | 24TSSOP ? ? |