The following is an overview of how the power supply unit is controlled.
The control method of this power supply unit is pulse width modulation.
When Q
is ON, the energy is charged in the transfer primary coil according to E
1
OFF, the energy is output from the secondary transfer as follows.
L
D
Load
1
Then the power is supplied to the Load. When Q
side. The output voltage is fed back in the control IC according to the error amp rectifier. Then
depending on how T
too large, in order to decrease the voltage output, the increase in
output voltage is stabilized.
Therefore, basically the timing: Ton/Toff of Q1 controls the output voltage.
L
is controlled,stabilization occurs. Also, when the current load becomes
ON
is ON, power is not output from the secondary
1
191
. When Q
is
1
1
is controlled and the