Categories: Power Supply

5V/10A 50W Offline Switching Power Supply

The following diagram is the 50W offline switching power supply circuit design. The circuit powered by a MOSFET. BUZ80A/IXTP4N8 for 220V AC voltage input and GE IRF823 for 110V AC input voltage. The output will be 5VDC with electric current up to 10A.

The schematic diagram:

Components list:

R1 : 100 ohm at 25 deg Celcius
R2 : 1 ohm – 1W
R3 : 10 ohm – 1/4W
R4 : 100K ohm – 1/4W
R5 : 0.33 ohm – 1W
R6 : 10K ohm – 1/4W
R7 : 390 ohm – 2W
R8 : 22K ohm – 10W
R9 : 68 ohm – 1/4W
R10 : 10 ohm – 1/2W
R11 : 3.3 ohm – 1/2W
RL : 5 ohm – 10W
C1 : 22 nF/400V
C2 : 470 uF/250V
C3 : 470 uF/16V
C4 : 220 pF/100V
C5 : 470 pF/500V
C6 : 2.2 nF/500V
C7 : 270 pF/500V
C8 : 39 pF/500V
C9 : 11000 uF/6.3V
C10 : 100 uF/16V
C11 : 0.047 uF/10V
L1 : 25 uH
D1 : IN4937
D2 : MBR1035
T1 : Lp=9 mH, n=1:15
T2 : 50 uH, n=1:3
F1 : Fuse 1A/SB
M1 : Diode Bridge
Q1 : BUZ80A/IXTP4N80 (220V AC)
Q1 : GE IRF823 (110V AC)

The schematic shows a 50-W power supply with a 5-V 10-A output. It truly is a flyback converter operating inside the continuous mode. The offline switching power supply circuit has functionality of a primary side and secondary side controller will full-protection from fault factors for example, overcurrent. When the error condition has been removed, the power supply will enter the soft-start cycle prior to recommencing normal operation.

circuit diagram

Recent Posts

Power Amplifier 45W Using uPC 1230 + Pre Amp Head uPC 1032

This is the circuit diagram of power amplifier 45W using power uPC 1230 as the…

55 years ago

Horn and Lamp Flasher Circuit for Car Reversing Gear Mode

The Horn Circuit This is a basic circuit of car horn and lamp flasher that…

55 years ago

Alarm Circuit for Drinking Water

This is the circuit diagram of drinking water alarm based a small water sensor by…

55 years ago

200W MOSFET Amplifier based IRFP250N

Here is the 200W MOSFET amplifier powered based on four piece of IRFP250N, they are…

55 years ago

300W RMS Stereo Power Amplifier based IC TDA7294

This is the 300W RMS stereo power amplifier circuit project. This amplifier is based four…

55 years ago

Stereo Tone Control with Line In + Microphone Mixer

This is an active stereo tone control circuit using very well known op-amp IC of…

55 years ago