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UCC256304是一款具有集成高电压栅极驱动器的全功能LLC控制器。此产品的设计目标是与PFC级配对使用以凭借最少的外部组件提供完整的电源系统。根据设计,所产生的电源系统无需单独的待机功率转换器即可满足最严格的待机功率要求.UCC256304使用混合迟滞控制来提供同类产品中最佳的线路和负载瞬态响应。该控制使开环传递函数成为一阶系统,因此很容易进行补偿,且始终保持稳定,具有适当的频率补偿。
UCC256304的独特之处在于该控制器具有较宽的直流输入工作范围。这是通过使输入过压检测阈值远大于输入电压起始阈值来实现的。因此LLC可在无需启动PFC的情况下启动并进入低功耗待机模式,并使LLC能够适应广泛的公共交流输入。
UCC256304提供了在每个突发周期期间具有一致突发功率电平的高效突发模式。率电平是可编程的,并随着输入电压自适应地改变。
<小>铝l商标是其各自所有者的财产。
Topology |
Control Method |
Vin (Min) (V) |
Vin (Max) (V) |
Frequency (Max) (kHz) |
Duty Cycle (Max) (%) |
Gate Drive (Typ) (A) |
Features |
Rating |
Operating Temperature Range (C) |
Pin/Package |
UCC256304 | UCC25600 | UCC256301 | UCC256302 | UCC256303 |
---|---|---|---|---|
Half-Bridge Resonant LLC | Half-Bridge Resonant LLC | Half-Bridge Resonant LLC | Half-Bridge Resonant LLC | Half-Bridge Resonant LLC |
Current | Voltage | Current | Current | Current |
370 | ||||
600 | 410 | 600 | 600 | 600 |
1000 | 350 | 1000 | 1000 | 1000 |
50 | 50 | 50 | 50 | 50 |
0.6 | 0.8 | 0.6 | 0.6 | 0.6 |
HV Start-up Light Load Efficiency Thermal Shutdown Wide AC input Wide DC input X cap discharge integrated | HV Start-up Light Load Efficiency Thermal Shutdown Wide DC input X cap discharge integrated | HV Start-up Light Load Efficiency Thermal Shutdown | Light Load Efficiency Supports external bias Thermal Shutdown | |
Catalog | Catalog | Catalog | Catalog | Catalog |
-40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 |
14SOIC | 8SOIC | 14SOIC | 14SOIC | 14SOIC |