VIPer22A-E dual-output evaluation board with 90 to 264 VAC input and 10 W output
DescriptionThis evaluation board is an offline, wide-range, VIPer22A-E dual-output power supply with a switching frequency of 60 kHz and is set up for secondary regulation with an optocoupler. One output delivers 5 V at 1 A and a second output delivers 12 V at 0.42 A, making for a total output power of 10 W. The evaluation board meets Blue Angel Norms, consuming less than 1 W total when working in standby mode. The board loads are reduced to zero and the output voltages still remain regulated.STEVAL-ISA004V1www.st.comBoard schematicSTEVAL-ISA004V12/4 1 Board schematicFigure 1.SchematicC422uF25V 12 J1CON2 C222uF400V C622nF50V R15 ohmsC5680uF25V2 X 30mHL1 C3100pF1kV R2 2k0.5W 1243 U2H11A817A NL30mH R6470 1234 J2CON4 1W F1FUSE0.5A 5X20mm0 D3BYW100-200 R915k C9220uF25V12V Rtn 1%0.5W L210uH C7100uF25V C10.047uF12V @ 0.42A250V85 to 264Vac 1%All resistors are 1/4 W 5% unless specified.All capacitors are in uF and 50 V unlessspecified.Drain 8Drain 6Drain 7Drain 5Source 1Source 2 Fb 3Vdd 4 U1VI Features Switch-mode general-purpose power supply Input: 90 to 264 VAC 50/60 Hz Output: 12 V @ 0.42 A and 5 V @ 1 A Burst-mode operation in standby for Blue Angel operation Current mode control Switching frequency: 60 kHz 75% efficiency Auxiliary undervoltage lockout with hysteresis Output short-circuit protection Thermal shutdown protection Meets EN55022 Class B EMI specification DescriptionThis evaluation board is an offline, wide-range, VIPer22A-E dual-output power supply with a switching frequency of 60 kHz and is set up for secondary regulation with an optocoupler. One output delivers 5 V at 1 A and a second output delivers 12 V at 0.42 A, making for a total output power of 10 W. The evaluation board meets Blue Angel Norms, consuming less than 1 W total when working in standby mode. The board loads are reduced to zero and the output voltages still remain regulated.STEVAL-ISA004V1www.st.comBoard schematicSTEVAL-ISA004V12/4 1 Board schematicFigure 1.SchematicC422uF25V 12 J1CON2 C222 specification DescriptionThis evaluation board
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C622nF50V, L210uH, VIPer22A-E, D21N5821, ST5V, C3100pF1kV, J2CON4, U3TL431, D11N4148, R915k, C222uF400V, J1CON2, U2H11A817A, C9220uF25V12V, R6470, 5X20mm0, EN55022, U1VIPer22A50V, C7100uF25V, NL30mH, 30mHL1, D3BYW100-200, T1CVP32-002
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