DN05049/D, Universal AC Input, 5 Volt Output, 15 to 24 Watt Power Supply Design Note
Reference Design using part NCP1077ST by onsemi
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For End Products
- Electronic Meter
- Smart Electric Meter
- White Goods
Description
- DN05049/D, Design Note describes a simple, low power (25W or less), universal AC input, constant voltage power supply intended for powering utility electric meters or similar industrial equipment or white goods where isolation from the AC mains is required and low cost and high efficiency is essential. The featured power supply is a simple CCM flyback topology utilizing new NCP1076/1077 series of monolithic switchers in an SOT-223 package. This Design Note provides the complete circuit schematic details and transformer design for 5V/4A power supplies
Key Features
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Conversion TypeAC to DC
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Input Voltage85 to 270 (AC) V
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Output Voltage5 V
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Output Current4.5 A
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Output Power15 to 25 W
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Efficiency80 %
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TopologyFlyback- CCM
Featured Parts (10)
| Part Number | Manufacturer | Type | Description | |||
|---|---|---|---|---|---|---|
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NCP431AISNT1G | onsemi | Voltage References | V-Ref Adjustable 2.5V to 36V 100mA 3-Pin SOT-23 T/R | Buy | |
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NCP431AVSNT1G | onsemi | Voltage References | V-Ref Adjustable 2.5V to 36V 100mA 3-Pin SOT-23 T/R | Buy | |
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NCP431ACSNT1G | onsemi | Voltage References | V-Ref Adjustable 2.5V to 36V 100mA 3-Pin SOT-23 T/R | Buy | |
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NCP1076STAT3G | onsemi | AC to DC Switching Converters | AC to DC Switching Converter Off-Line Switcher 6.6V 65kHz T/R 4-Pin(3+Tab) SOT-223 | Buy | |
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PS2561BL-1-Q-A | Renesas Electronics | Transistor and Photovoltaic Output Photocouplers | Optocoupler DC-IN 1-CH Transistor DC-OUT 4-Pin DIP SMD T/R | Buy | |
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NCP1076STBT3G | onsemi | AC to DC Switching Converters | AC to DC Switching Converter Off-Line Switcher 6.6V 100kHz T/R 4-Pin(3+Tab) SOT-223 | Buy | |
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PS2561BL-1-F3-Q-A | Renesas Electronics | Transistor and Photovoltaic Output Photocouplers | Optocoupler DC-IN 1-CH Transistor DC-OUT 4-Pin PDIP SMD T/R | Buy | |
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NCP1077STCT3G | onsemi | AC to DC Switching Converters | AC to DC Switching Converter Off-Line Switcher 6.6V 130kHz T/R 4-Pin(3+Tab) SOT-223 | Buy | |
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NCP1077STBT3G | onsemi | AC to DC Switching Converters | AC to DC Switching Converter Off-Line Switcher 6.6V 100kHz T/R 4-Pin(3+Tab) SOT-223 | Buy | |
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NCP1077STAT3G | onsemi | AC to DC Switching Converters | AC to DC Switching Converter Off-Line Switcher 6.6V 65kHz T/R 4-Pin(3+Tab) SOT-223 | Buy | |