EPR-34 Datasheet, PDF (13/28 Pages) Power Integrations, Inc. – Engineering Prototype Report for EP 34 - Single Output 30 W AC-DC Power Supply

10-Feb-2004
EPR-34 – 12 V, 30 W, Universal Input
8 Transformer Spreadsheets
Power Supply Input
VACMIN
Volts
85
VACMAX
Volts
265
FL
Hertz
50
TC
mSeconds
2.21
Z
0.49
N
%
80.0
Min Input AC Voltage
Max Input AC Voltage
AC Main Frequency
Bridge Rectifier Conduction Time Estimate
Loss Allocation Factor
Efficiency Estimate
Power Supply
Outputs
VOx
Volts
IOx
Amps
VB
Volts
IB
Amps
12.00 9.00 Output Voltage
2.500 0.010 Output Current
15.00
Bias Voltage
0.006
Bias Current
Device Variables
Device
PO
VDRAIN
VDS
FS
KRPKDP
KI
ILIMITEXT
ILIMITMIN
ILIMITMAX
IP
IRMS
DMAX
Watts
Volts
Volts
Hertz
Amps
Amps
Amps
Amps
Amps
TOP245Y/F
30.18
647
5.2
132000
0.40
0.70
1.17
1.67
1.93
0.98
0.63
0.63
Device Name
Total Output Power
Maximum Drain Voltage Estimate (Includes Effect
of Leakage Inductance)
Device On-State Drain to Source Voltage
Device Switching Frequency
Ripple to Peak Current Ratio
External Current Limit Ratio
Device Current Limit External Minimum
Device Current Limit Minimum
Device Current Limit Maximum
Peak Primary Current
Primary RMS Current
Maximum Duty Cycle
Power Supply Components
Selection
CIN
uFarads
68.0
VMIN
Volts
76
VMAX
Volts
375
VCLO
Volts
190
PZ
Watts
2.5
VDB
Volts
0.7
PIVB
Volts
64
Input Filter Capacitor
Minimum DC Input Voltage
Maximum DC Input Voltage
Clamp Zener Voltage
Estimated Primary Zener Clamp Loss
Bias Winding Diode Forward Voltage Drop
Bias Rectifier Maximum Peak Inverse Voltage
Power Supply Output
Parameters
VDx
PIVSx
ISPx
ISRMSx
IRIPPLEx
Volts
Volts
Amps
Amps
Amps
0.5 0.5 Output Winding Diode Forward Voltage Drop
51 39 Output Rectifier Maximum Peak Inverse Voltage
9.17 0.04 Peak Secondary Current
4.52 0.02 Secondary RMS Current
3.77 0.02 Output Capacitor RMS Ripple Current
Page 13 of 28
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