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UCC28700系列反激式电源控制器，此控制器在无需使用光耦合器的情况下提供恒定电压（CV）和恒定电流（CC ）输出调节。此器件处理来自初级电源开关和一个辅助反激式绕组的信息以实现对输出电压和电流的精确控制。低启动电流，动态控制运转状态和一个定制的调制参数在不牺牲启动时间
UCC28700系列中的控制算法使得运行效率符合或者超过适用标准。输出驱动接至一个MOSFET电源开关。带有谷值<关键词：开关频率的调制和初级电流峰值振幅（FM和AM）在整个负载和线路范围内保持较高的转换效率。
控制器有一个130kHz的最大开关频率并且一直保持对变压器内初级峰值电流的控制。保护特性有助于保持控制中的初级和次级应力分量UCC28701，UCC28702和UCC28703器件在提供固定线缆补偿电平的同时使用一个负温度系数（NTC）热敏电阻实现远程温度感测。
| Control Method |
| Duty Cycle (Max) (%) |
| Frequency (Max) (kHz) |
| UVLO Thresholds On/Off (V) |
| Features |
| Operating Temperature Range (C) |
| Package Group |
| Rating |
| Package Size: mm2:W x L (PKG) |
| UCC28700 | UCC28703 | UCC28704 | UCC28710 | UCC28720 | UCC28722 | UCC28740 | UCC28742 |
|---|---|---|---|---|---|---|---|
| Current | Current | Current | Current | Current | Current | Current | Current |
| 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 |
| 132 | 132 | 85 | 100 | 80 | 80 | 100 | 105 |
| 21/8.1 | 21/8.1 | 21/7.7 | 21/8 | 21/7.7 | 21/7.7 | 21/7.75 | 22/7.7 |
| PSR Adjustable CBC CV/CC Control DCM Power Delivery Compatible | PSR Fixed CBC NTC Configurable CV/CC Control DCM | PSR HV Start-up Configurable Fixed CBC NTC Configurable CV/CC Control DCM USB Type-C Compatible IoT Compatible Power Delivery Compatible | PSR HV Start-up Adjustable CBC CV/CC Control DCM Green Mode Input Line Monitor Leading Edge Blanking Light Load Efficiency Low Power Soft Start Smart Meters Compatible IoT Compatible Power Delivery Compatible | PSR HV Start-up BJT Switch Adjustable CBC CV/CC Control DCM Current Limiting Green Mode HV Start-up Input Line Monitor Leading Edge Blanking Light Load Efficiency Low Power Soft Start Smart Meters Compatible IoT Compatible Power Delivery Compatible | PSR BJT Switch Adjustable CBC CV/CC Control DCM Smart Meters Compatible IoT Compatible Power Delivery Compatible | SSR HV Start-up CV/CC Control DCM Smart Meters Compatible IoT Compatible USB Type-C Compatible Power Delivery Compatible | SSR DCM Smart Meters Compatible IoT Compatible Power Delivery Compatible |
| -20 to 125 | -20 to 125 | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 |
| SOT-23 | SOT-23 | SOT-23 | SOIC | SOIC | SOT-23 | SOIC | SOT-23 |
| Catalog | Catalog | Catalog | Catalog | Catalog | Catalog | Catalog | Catalog |
| 6SOT-23: 8 mm2: 2.8 x 2.9(SOT-23) | 6SOT-23: 8 mm2: 2.8 x 2.9(SOT-23) | 6SOT-23: 8 mm2: 2.8 x 2.9(SOT-23) | 7SOIC: 29 mm2: 6 x 4.9(SOIC) | 7SOIC: 29 mm2: 6 x 4.9(SOIC) | 6SOT-23: 8 mm2: 2.8 x 2.9(SOT-23) | 7SOIC: 29 mm2: 6 x 4.9(SOIC) | 6SOT-23: 8 mm2: 2.8 x 2.9(SOT-23) |
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