coolsw2003
Newbie level 3

Hi, everybody,
I am designing a step-up DC-DC converter which can
converter 1.5V to 2.5V.
First, here is my simulation netlist.
L1 vdd n1 50u
Diode n1 vout power_diode
Cl vout gnd 220u
m1 n1 in gnd gnd ne w=350u l=0.25u
R1 vout x 20K
R2 x gnd 20K
rload vout gnd 33
Without the load resistor "rload", vout increase continuously more
then 5V when a pulse forsed to signal "in".
However, when the load resistor is connected the output vout stays
around 800mV and vout tends to decrease at very slow rate.
Can anybody help me what wrong with my simulation?
Thanks,
coolsw2003
I am designing a step-up DC-DC converter which can
converter 1.5V to 2.5V.
First, here is my simulation netlist.
L1 vdd n1 50u
Diode n1 vout power_diode
Cl vout gnd 220u
m1 n1 in gnd gnd ne w=350u l=0.25u
R1 vout x 20K
R2 x gnd 20K
rload vout gnd 33
Without the load resistor "rload", vout increase continuously more
then 5V when a pulse forsed to signal "in".
However, when the load resistor is connected the output vout stays
around 800mV and vout tends to decrease at very slow rate.
Can anybody help me what wrong with my simulation?
Thanks,
coolsw2003