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UCC28700系列反激式電源控制器,此控制器在無需使用光耦合器的情況下提供恒定電壓(CV)和恒定電流(CC )輸出調節。此器件處理來自初級電源開關和一個輔助反激式繞組的信息以實現對輸出電壓和電流的精確控制。低啟動電流,動態控制運轉狀態和一個定制的調制參數在不犧牲啟動時間
UCC28700系列中的控制算法使得運行效率符合或者超過適用標準。輸出驅動接至一個MOSFET電源開關。帶有谷值<關鍵詞:開關頻率的調制和初級電流峰值振幅(FM和AM)在整個負載和線路范圍內保持較高的轉換效率。
控制器有一個130kHz的最大開關頻率并且一直保持對變壓器內初級峰值電流的控制。保護特性有助于保持控制中的初級和次級應力分量UCC28701,UCC28702和UCC28703器件在提供固定線纜補償電平的同時使用一個負溫度系數(NTC)熱敏電阻實現遠程溫度感測。
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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) |
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UCC28700 | UCC28703 | UCC28704 | UCC28710 | UCC28720 | UCC28722 | UCC28740 | UCC28742 |
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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) ? ? |