</a>led" title="led">led" title="led">led circuit diagram, the entire bill of materials required to build the supply, extensive documentation of the power transformer, along with test data and waveform plots of the most important electrical waveforms. This report describes a universal input, 5 V, 1000 mA and 18 V, 670 mA isolated flyback converter employing LNK6774V from the LinkSwitch-HP family of ICs. It contains the complete specification of the power supply, a detailed circuit diagram, the entire bill of materials required to build the supply, extensive documentation of the power transformer, along with test data and waveform plots of the most important electrical waveforms. This report describes a universal input, 5 V, 1000 mA and 18 V, 670 mA isolated flyback converter employing LNK6774V from the LinkSwitch-HP family of ICs. It contains the complete specification of the power supply, a detailed circuit diagram, the entire bill of materials required to build the supply, extensive documentation of the power transformer, along with test data and waveform plots of the most important electrical waveforms.
17W雙輸出反激轉換器參考設計主要特性和指標:
? Primary side regulated isolated flyback converter with ±5% regulation.
? 132 kHz switching frequency for small transformer and output filter size
? Full load continuous conduction mode operation for improved efficiency and reduced output capacitor ripple currents
? Multi-mode operation maximizes efficiency over full load range
? Below 100 mW power consumption with 50 mW standby load at 230 VAC.
? Extensive protection features including OVP, OTP, brown-in/out, line overvoltage, and lost-regulation (auto-restart)
? Meets EN-550022 and CISPR-22 Class B conducted EMI with 5 dB margin.
? Meets IEC61000-4-5 1 kV / 2 kV surge.
圖3. 17W轉換器參考設計外形圖
17W轉換器參考設計主要性能指標:
圖4. 17W轉換器參考設計電路圖
17W轉換器參考設計材料清單:
圖5. 17W轉換器參考設計變成壓器電路圖
圖6. 17W轉換器參考設計PCB布局圖
詳情請見:
http://www.powerint.com/sites/default/files/product-docs/linkswitch-hp_family_datasheet.pdf
和
http://www.powerint.com/sites/default/files/PDFFiles/rdr321.pdf
17W雙輸出反激轉換器參考設計主要特性和指標:
? Primary side regulated isolated flyback converter with ±5% regulation.
? 132 kHz switching frequency for small transformer and output filter size
? Full load continuous conduction mode operation for improved efficiency and reduced output capacitor ripple currents
? Multi-mode operation maximizes efficiency over full load range
? Below 100 mW power consumption with 50 mW standby load at 230 VAC.
? Extensive protection features including OVP, OTP, brown-in/out, line overvoltage, and lost-regulation (auto-restart)
? Meets EN-550022 and CISPR-22 Class B conducted EMI with 5 dB margin.
? Meets IEC61000-4-5 1 kV / 2 kV surge.
圖3. 17W轉換器參考設計外形圖
17W轉換器參考設計主要性能指標:
圖4. 17W轉換器參考設計電路圖
17W轉換器參考設計材料清單:
圖5. 17W轉換器參考設計變成壓器電路圖
圖6. 17W轉換器參考設計PCB布局圖
詳情請見:
http://www.powerint.com/sites/default/files/product-docs/linkswitch-hp_family_datasheet.pdf
和
http://www.powerint.com/sites/default/files/PDFFiles/rdr321.pdf
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