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Inner Current Loop |
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| Input data |
CTtr= |
0.004 |
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Current Transformer turn ratio |
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Rcsh= |
15.000 |
Ohm |
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RampL= |
50 |
mV |
Ramp valley voltage |
No load |
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RampH= |
330 |
mV |
Ramp peak voltage |
No load |
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| Output data |
CT= |
0.0600 |
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Current Transducer gain |
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Output Voltage Loop |
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| Input data |
RLoad= |
0.302 |
Ohm |
Load Resistor |
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Voutn= |
27.22 |
V |
Nominal DC Output Voltage |
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Lo= |
0.76 |
uH |
Output Inductor, chosen |
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C401= |
3,240 |
uF |
Output Capacitor (before CM/DM
Inductor) |
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C402= |
1,620 |
uF |
Output Capacitor (after CM/DM
Inductor) |
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ESR1= |
8.5 |
mOhm |
C401 ESR |
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ESR2= |
17.0 |
mOhm |
C402 ESR |
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Attn2m= |
7.3 |
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Minimum second stage filter
attenuation |
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Attn2= |
10.4 |
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Second stage filter attenuation,
chosen |
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P_Gain |
36.8 |
A/V |
Power Stage Gain (average current
mode) |
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D_Gain |
60 |
dB |
DC Gain of the Voltage Error Amplifier |
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fr= |
360 |
kHz |
Ripple Frequency in the Output
Capacitor |
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fc= |
10 |
kHz |
Crossover Frequency |
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R401= |
1.101 |
k |
Scale amplifier input resistors |
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R801= |
0.100 |
k |
Scale amplifier feedback resistors |
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R802= |
10.0 |
k |
Error amplifier input resistor |
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| Output data |
Z1= |
8.5 |
mOhm |
C401/ESR1 impedance @ fr |
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Z2= |
17.0 |
mOhm |
C402/ESR2 impedance @ fr |
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f1= |
10.8 |
Hz |
Pole, DC Gain of Error Amplifier |
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f2= |
108.3 |
Hz |
Pole, Load Resistance/Output
Capacitors |
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f3= |
108.3 |
Hz |
Zero, Rzo*Czo |
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f4= |
5.8 |
kHz |
Zero, ESR*Output capacitor |
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f5= |
5.8 |
kHz |
Pole, Rzo*Cpe |
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f6= |
66 |
kHz |
Pole, L1*ESR*(CE1) |
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f7= |
66 |
kHz |
Zero, Rzf*Cpe*(Rzo) |
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L406= |
75.0 |
nH |
Inductor of the second stage output
filter |
75 nH |
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Rslope= |
10.00 |
Meg |
Error amplifier feedback resistor |
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Czo= |
1.47 |
nF |
Rzo series with Czo feedback network |
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Rzo= |
997 |
k |
Rzo series with Czo feedback network |
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Cpe= |
27.6 |
pF |
Rzf series with Cpe feedback network |
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Rzf= |
80.3 |
k |
Rzf series with Cpe feedback network |
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Output Current Loop |
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| Input data |
Rosh= |
0.350 |
mOhm |
Output Shunt Resistor |
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| Output data |
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| A differential scale amplifier, followed by a error amplifier
is assumed to be used. |
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| SMPS Power Supplies, Inc. |
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| Doing The Right Thing Is The Right Thing To Doä |
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| www.PowerSupplies.net |
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| www.GoToPower.net |
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| Copyright © 1998-2005 SMPS Power Supplies,
Inc. All rights reserved. |
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| Copyright © 1990-1997 LCD Consulting |
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| Copyright © 1979-1989 Constantin Darius Livescu |
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