EPR-00010 Datasheet, PDF (10/24 Pages) Power Integrations, Inc. – 15W, Universal Input, Single Output, Isolated Converter with TOP233Y

Engineering Prototype Report
7.2 Transformer spreadsheet
Application Variables
VACMIN
VACMAX
FL
FS
VO
PO
N
Z
VB
TC
CIN
85
300
50
124000
15.00
15.00
85.0
0.49
19.00
3
33.0
Volts
Volts
Hertz
Hertz
Volts
Watts
%
Volts
mSeconds
uFarads
Device Variables
Device
VOR
KRPKDP
TOP233
90.00
0.66
Volts
KI
ILIMITEXT
ILIMITMIN
ILIMITMAX
VDS
VO1
VD1
VDB
1.00
0.93
0.93
1.07
10.0
15.00
1.0
1.0
Amps
Amps
Amps
Volts
Volts
Volts
Volts
Transformer Core/ Construction Variables
Core/Bobbin
AE
LE
AL
BW
M
L
NS
EF20
0.32
4.63
1350
12.50
0.0
2.0
13
cm^2
cm
nH/T^2
mm
mm
DC Input Voltage Parameters
VMIN
83
Volts
VMAX
424
Volts
Current Waveform Shape Parameters
DMAX
0.55
IAVG
0.21
Amps
IP
IR
IRMS
0.57 Amps
0.38 Amps
0.30 Amps
Minimum AC Input Voltage
Maximum AC Input Voltage
AC Main Frequency
Device switching Frequency
Main Output Voltage
Total Output Power
Efficiency Estimate
Loss Allocation Factor
Bias Voltage
Bridge Rectifier Conduction Time Estimate
Input Filter Capacitor
Device Name
Reflected Output Voltage
Ripple to Peak Current Ratio
External Current Limit Ratio
Device Current Limit, External Minimum
Device Current Limit, Minimum
Device Current Limit, Maximum
Device On-State Drain to Source Voltage
Output Voltage
Output Winding Diode Forward Voltage Drop
Bias Winding Diode Forward Voltage Drop
Core and Bobbin Type
Core Effective Cross Section Area
Core Effective Path Length
Ungapped Core Effective Inductance
Bobbin Physical Winding Width
Safety Margin Width
Number of Primary Layers
Number of Main Turns
Minimum DC Input Voltage
Maximum DC Input Voltage
Maximum Duty Cycle
Average Primary Current
Peak Primary Current
Primary Ripple Current
Primary RMS Current
EPR-00010
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