EPR-33 Datasheet, PDF (13/32 Pages) Power Integrations, Inc. – Engineering Prototype Report for EP 33 - 45 W LCD Monitor External Power Supply using TOP247Y (TOPSwitch-GX)

28-Mar-2003
EPR-33 – 45 W External Adapter Supply
8 Transformer Spreadsheet
Power Supply Input
VACMIN
VACMAX
FL
TC
Z
N
Volts
Volts
Hertz
msonds
%
89
265
50
2.11
0.49
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 Output Voltage
3.750 Output Current
12.00
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
TOP247Y/
F
45.07
605
3.9
132000
0.40
0.55
1.84
3.35
3.85
1.52
0.91
0.56
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
VMIN
VMAX
VCLO
PZ
VDB
PIVB
uFarads
Volts
Volts
Volts
Watts
Volts
Volts
100.0
83
375
150
2.1
0.7
60
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
Page 13 of 32
Power Integrations, Inc.
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