The presented article explains a simple buck converter or an SMPS circuit using the IC VIPer12A from STMicroelectronics. The circuit uses negligible number of external components yet is able to operate directly from mains AC input.
Parts List for the proposed simple SMPS buck converter circuit:
Rr 10W 1/2W
Rf 10KW 1/4W
Rburden 4.7kW 1/4W
Cin 4.7 μF, 450V Electrolytic Capacitor
C1 33 μF, 50V Electrolytic Capacitor
C2 100 μF, 16V Electrolytic Capacitor
C3 1 μF, 25V Electrolytic Capacitor
C4 22 nF Ceramic capacitor
Dr Diode 1N4007
D1 Diode BA159 (fast)
D2 Diode 1N4148 (fast)
D3 Diode 1N4004
Dz 22V Zener
Dz1 27V Zener
Dz2 5.6V Zener
L 1.5 mH
Lf 470 μH Inductor
IC1 STMicroelectronics VIPer12ADIP
PCB Design and Component Layout of the above explained SMPS buck converter circuit using IC VIPer12A
Rr 10W 1/2W
Rf 10KW 1/4W
Rburden 4.7kW 1/4W
Cin 4.7 μF, 450V Electrolytic Capacitor
C1 33 μF, 50V Electrolytic Capacitor
C2 100 μF, 16V Electrolytic Capacitor
C3 1 μF, 25V Electrolytic Capacitor
C4 22 nF Ceramic capacitor
Dr Diode 1N4007
D1 Diode BA159 (fast)
D2 Diode 1N4148 (fast)
D3 Diode 1N4004
Dz 22V Zener
Dz1 27V Zener
Dz2 5.6V Zener
L 1.5 mH
Lf 470 μH Inductor
IC1 STMicroelectronics VIPer12ADIP
PCB Design and Component Layout of the above explained SMPS buck converter circuit using IC VIPer12A
