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UCC28704離線反激控制器是一款高度集成的6引腳一次側穩壓脈寬調制(PWM)控制器,旨在設計符合全球效率標準的高效AC轉直流電源。此控制器啟動時的電流消耗超低,可使設計獲得低于30mW的無負載輸入功率,并且節省待機模式能耗。憑借智能一次側感應和控制功能,無需使用光電耦合器或二次側反饋電路即可將輸出電壓和電流控制在5%的變化范圍內。
UCC28704應用了增強型負載瞬態響應技術,有助于最大限度減小輸出電容,從而減小系統整體尺寸并降低成本。此外,該控制器還免除了對環路補償組件的需求,為電源設計人員簡化了設計及調試過程。轉換器的輸出電壓和電流會得到穩定性處理,以防出現可能損壞負載或連接器的過載狀況。同樣,恒流輸出欠壓保護(CCUV)關斷特性會監控輸出欠壓故障以防止由于軟短路問而造成連接器過熱或燒毀,從而大幅度提升系統整體可靠性.NTC接口引腳有助于為電路板或組件施加過熱保護。
UCC28704在2A或更高輸出電流下可輕松與TI的二次側同步整流器(SR)控制器搭配使用,從而提高轉換效率或實現更為緊湊的設計。
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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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UCC28704 | LM5023 | UCC28600 | UCC28610 | UCC28700 | UCC28703 | UCC28710 | UCC28720 | UCC28722 | UCC28740 | UCC28742 | UCC28780 |
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Current ? ? | Current ? ? | Current ? ? | Current ? ? | Current ? ? | Current ? ? | Current ? ? | Current ? ? | Current ? ? | Current ? ? | Current ? ? | Current ? ? |
99 ? ? | 100 ? ? | 99 ? ? | 100 ? ? | 99 ? ? | 99 ? ? | 99 ? ? | 99 ? ? | 99 ? ? | 99 ? ? | 99 ? ? | 99 ? ? |
85 ? ? | 130 ? ? | 130 ? ? | 130 ? ? | 132 ? ? | 132 ? ? | 100 ? ? | 80 ? ? | 80 ? ? | 100 ? ? | 105 ? ? | 1000 ? ? |
21/7.7 ? ? | 12.8/7.5 ? ? | 10.3/9.3 ? ? | 10.2/8 ? ? | 21/8.1 ? ? | 21/8.1 ? ? | 21/8 ? ? | 21/7.7 ? ? | 21/7.7 ? ? | 21/7.75 ? ? | 22/7.7 ? ? | 17.5/10 ? ? |
PSR HV Start-up Configurable Fixed CBC NTC Configurable CV/CC Control DCM USB Type-C Compatible IoT Compatible Power Delivery Compatible ? ? | SSR HV Start-up Configurable QR/TM Green Mode Light Load Efficiency Power Delivery Compatible ? ? | SSR QR/TM Error Amplifier Green Mode Light Load Efficiency Power Delivery Compatible Motor Drive Compatible Audio Compatible ? ? | DCM SSR HV Start-up Soft Switching Power Delivery Compatible Audio Compatible Motor Drive Compatible ? ? | PSR Adjustable CBC CV/CC Control DCM Power Delivery Compatible ? ? | PSR Fixed CBC NTC Configurable CV/CC Control DCM ? ? | 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 ? ? | Zero Voltage Switching Active Clamp Flyback ? ? |
-40 to 125 ? ? | -40 to 125 ? ? | -40 to 105 ? ? | -40 to 125 ? ? | -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 ? ? | VSSOP ? ? | SOIC ? ? | PDIP SOIC ? ? | SOT-23 ? ? | SOT-23 ? ? | SOIC ? ? | SOIC ? ? | SOT-23 ? ? | SOIC ? ? | SOT-23 ? ? | SOIC WQFN ? ? |
Catalog ? ? | Catalog ? ? | Catalog ? ? | Catalog ? ? | Catalog ? ? | Catalog ? ? | Catalog ? ? | Catalog ? ? | Catalog ? ? | Catalog ? ? | Catalog ? ? | Catalog ? ? |
6SOT-23: 8 mm2: 2.8 x 2.9(SOT-23) ? ? | 8VSSOP: 15 mm2: 4.9 x 3(VSSOP) ? ? | 8SOIC: 29 mm2: 6 x 4.9(SOIC) ? ? | See datasheet (PDIP) 8SOIC: 29 mm2: 6 x 4.9(SOIC) ? ? | 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) ? ? | 16SOIC: 59 mm2: 6 x 9.9(SOIC) 16WQFN: 9 mm2: 3 x 3(WQFN) ? ? |