Noise Superimposed On The Input Voltage - Toshiba TLP7820 Reference Manual

5.2 Noise superimposed on the input voltage

Running a simulation superimposing a noise signal (a 500-kHz sine wave with 100 mVp-p) on
the input voltage, Vin1. The other conditions are the same as for the previous simulation. Figure
5.3 shows the circuit simulated.
Vin
Figure 5.3 Simulation circuit superimposing a noise
Figure 5.4 shows the simulation results, which indicate that the output waveform was not
measured properly due to the influence of the noise.
250mV
V
i
n
200mV
150mV
100mV
50mV
-0mV
-50mV
-100mV
-150mV
-200mV
>>
-250mV
0s
1
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Toshiba Electronic Devices & Storage Corporation
V_noise is superimposed on Vin1.
1.76 Vp-p
50us 100us
V(Vin) 2 V(Vout)
Figure 5.4 Simulation waveforms with noise
150us 200us
Time
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RD014-RGUIDE-01
2.6V
V
Vout o
u
Vin
2.4V
t
2.2V
2.0V
1.8V
1.6V
1.4V
1.2V
1.0V
0.8V
0.6V
250us 300us
2018-03-15
Vout
Rev. 1