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`描述及特性 This 12V/5W reference design is optimized for very low cost and yet maintains good efficiency. Two key factors for minimizing cost are a BJT is used for the main power switch, and primary-side regulation eliminates the need for an optocoupler. The UCC28720 quasi-resonant flyback controller is able to implement both of these features. With quasi-resonant switching, efficiency at full load is over 80%, even with a BJT switch. Light-load losses are kept below 100mW due to burst mode operation.
PMP9074 Test Results.pdf
(1.88 MB, 下载次数: 10
)
PMP9074 BOM.pdf
(81.29 KB, 下载次数: 1
)
PMP9074 Gerber.zip
(171.06 KB, 下载次数: 2
)
PMP9074 PCB.pdf
(279.26 KB, 下载次数: 2
)
PMP9074 Schematic.pdf
(126.89 KB, 下载次数: 3
)
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