EPR-93 Datasheet, PDF (16/40 Pages) Power Integrations, Inc. – Engineering Prototype Report for EP 93 - 32 W/81 W Peak Supply Using PeakSwitch- (PKS606Y)

EP-93 – 30 V, 1.07 A, 2.7 A (peak), Universal Input Supply
22-Jun-2006
8 Transformer Spreadsheet
ACDC_PeakSwitch_0 INPUT INFO
31006; Rev.1.1;
©Copyright Power
Integrations 2006
ENTER APPLICATION VARIABLES
VACMIN
90
VACMAX
265
fL
50
Nominal Output
30.00
Voltage (VO)
Maximum Output
2.71
Current (IO)
Minimum Output
27.00
Voltage at Peak Load
Continuous Power
32.00
Peak Power
n
0.75
Z
tC Estimate
CIN
3.00
150.00
OUTPUT UNIT
ACDC_PeakSwitch_031006_Rev1-1.xls; PeakSwitch
Continuous/Discontinuous Flyback Transformer Design
Spreadsheet
Volts
Volts
Hertz
Volts
Minimum AC Input Voltage
Maximum AC Input Voltage
AC Mains Frequency
Nominal Output Voltage (at continuous power)
Amps
Power Supply Output Current (corresponding to peak power)
27.00 Volts
32.00 Watts
73.17 Watts
0.60
mSeconds
150 uFarads
Minimum Output Voltage at Peak Power (Assuming output droop
during peak load)
Continuous Output Power
Peak Output Power
Efficiency Estimate at output terminals and at peak load.
Enter 0.7 if no better data available
Loss Allocation Factor (Z = Secondary side losses / Total losses)
Bridge Rectifier Conduction Time Estimate
Input Capacitance
ENTER PeakSwitch VARIABLES
PeakSwitch
PKS606Y
Chosen Device
ILIMITMIN
ILIMITMAX
fSmin
I^2fmin
VOR
VDS
VD
VDB
VCLO
KP (STEADY STATE)
KP (TRANSIENT)
120.00
8.00
1.00
170
PKS606Y
PKS606Y
2.600 Amps
3.000 Amps
250000 Hertz
1955 A^2kHz
120 Volts
8 Volts
1 Volts
0.7 Volts
170 Volts
0.50
0.30
PeakSwitch device
Minimum Current Limit
Maximum Current Limit
Minimum Device Switching Frequency
I^2f (product of current limit squared and frequency is trimmed for
tighter tolerance)
Reflected Output Voltage (VOR <= 135 V Recommended)
PeakSwitch on-state Drain to Source Voltage
Output Winding Diode Forward Voltage Drop
Bias Winding Diode Forward Voltage Drop
Nominal Clamp Voltage
Ripple to Peak Current Ratio (KP < 6)
Ripple to Peak Current Ratio under worst case at peak load
(0.25 < KP < 6)
ENTER UVLO VARIABLES
V_UV_TARGET
V_UV_ACTUAL
RUV_IDEAL
RUV_ACTUAL
89 Volts
92 Volts
3.47 Mohms
3.60 Mohms
Target DC under-voltage threshold, above which the power supply
will start
Typical DC start-up voltage based on standard value of
RUV_ACTUAL
Calculated value for UV Lockout resistor
Closest standard value of resistor to RUV_IDEAL
BIAS WINDING VARIABLES
VB
NB
PIVB
15.00 Volts
5
63 Volts
Bias winding Voltage
Number of Bias Winding Turns
Bias Rectifier Maximum Peak Inverse Voltage
Power Integrations
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