Design Warning (No Optimization)  


Design Results
Var Value Output 1
(main)		 Output 2 Units Description
VACMIN 195     Volts Min Input AC Voltage.
VACMAX 265     Volts Max Input AC Voltage
FL 50     Hertz Line Frequency
TC 1.54     mSeconds Diode Conduction Time
Z 0.60     Loss Allocation Factor
N 85.0     % Efficiency Estimate

Var Value Output 1
(main)		 Output 2 Units Description
VOx   20.00 -20.00 Volts Output Voltage
IOx   3.00 3.00 Amps Output Current
VB 12.0     Volts Bias Voltage
IB 0.006     Amps Bias Current
Var Value Output 1
(main)		 Output 2 Units Description
Device TOP248Y     PI Device Name
PO 120.1     Watts Total Output Power
VDRAIN 678     Volts Maximum Drain Voltage
VDS 4.27     Volts Drain to Source Voltage
FS 132000     Hertz Switching Frequency
KRPKDP 0.70     Continuous/Discontinuous Operating Ratio
KI 1.00     KI Factor
ILIMITEXT 4.18     Amps Device Current Limit External Minimum
ILIMITMIN 4.18     Amps Current Limit Minimum
ILIMITMAX 4.82     Amps Current Limit Maximum
IP 2.47     Amps Peak Primary Current
IRMS 1.01     Amps Primary RMS Current
DMAX 0.36     Maximum Duty Cycle
Var Value Output 1
(main)		 Output 2 Units Description
VBRIDGE 600     Volts Diode Bridge Voltage Rating
IAVG 0.58     Amps Average Diode Bridge Current
CIN 150.0     uFarads Input Capacitance
VMIN 245.2     Volts Minimum DC Input Voltage
VMAX 374.8     Volts Maximum DC Input Voltage
VCLO 200     Volts Clamp Zener Voltage
PZ 4.9     Watts Primary Zener Clamp Loss
See Errors, Warnings, Information section for detail
VDB 0.70     Volts Bias Diode Forward Voltage Drop
PIVB 47     Volts Bias Rectifier Max Peak Inverse Voltage
RLS1 4.7     MOhms Line sense resistor
VUVON_MIN 207.19     Volts Minimum undervoltage threshold beyond which Power supply will start-up
VUVON_MAX 253.71     Volts Maximum undervoltage threshold before which Power Supply will start-up
VOVOFF_MIN 979.43     Volts Minimum overvoltage threshold after which Power Supply will turn off after an over voltage condition
VOVOFF_MAX 1118.99     Volts Maximum overvoltage threshold before the Power Supply will turn off after an over voltage condition
See Errors, Warnings, Information section for detail

Var Value Output 1
(main)		 Output 2 Units Description
VDx   0.70 0.70 Volts Output Winding Diode Forward Voltage Drop
PIVSx   77 77 Volts Output Rectifier Maximum Peak Inverse Voltage
ISPx   7.91 7.91 Amps Peak Secondary Current
ISRMSx   4.31 4.31 Amps Secondary RMS Current
IRIPPLEx   3.09 3.09 Amps Output Capacitor RMS Ripple Current
Var Value Output 1
(main)		 Output 2 Units Description
Core/Bobbin EER40     Core Type
Core Manuf. Generic     Core Manufacturer
Bobbin Manuf Generic     Bobbin Manufacturer
LP 363     uHenries Primary Inductance
NP 84.8     Primary Number of Turns
NB 8.0     Bias Winding Number of Turns
AWG 23     AWG Primary Wire Gauge
See Errors, Warnings, Information section for detail
CMA 509     Cmils/A Primary Winding Current Capacity
VOR 135.00     Volts Reflected Output Voltage
BW 27.50     mm Bobbin Winding Width
M 0.0     mm Safety Margin Width
L 2.00     Primary Number of Layers
AE 149.00     mm^2 Core Cross Sectional Area
ALG 50     nH/T^2 Gapped Core Effective Inductance
BM 709     Gauss Maximum Flux Density
BP 1383     Gauss Peak Flux density
BAC 248     Gauss AC Flux Density for Core Loss
LG 3.658     mm Estimated Gap Length
See Errors, Warnings, Information section for detail
LL 2.7     uHenries Primary Leakage Inductance
LSEC 30     nHenries Secondary Trace Inductance

Var Value Output 1
(main)		 Output 2 Units Description
NSx   13.0 13.0 Secondary Number of Turns
Rounded Down NSx   13 Rounded to Integer Secondary Number of Turns
Rounded Down Vox   -20.00 Volts Auxiliary Output Voltage for Rounded down to Integer Secondary Number of Turns
Rounded Up NSx   13 Rounded to Next Integer Secondary Number of Turns
Rounded Up Vox   -20.00 Volts Auxiliary Output Voltage for Rounded up to Next Integer Secondary Number of Turns
AWGSx Range   18 - 22 18 - 22 AWG Secondary Wire Gauge Range
See Errors, Warnings, Information section for detail

High power flyback design

Recommend split primary winding construction. Zener clamp may require parallel resistor/capacitor.

Errors, Warnings, Information
  Description Fix Show Me Ref #
Gap length too big. Decrease transformer size, decrease secondary turns (NS), decrease KRP/KDP. View detailed help on this error 217
Check Zener clamp temperature. Consider adding parallel RC to zener or move to an RCD clamp, split primary "sandwich" (L>1), use lower switching frequency, reduce reflected voltage (VOR) and minimize secondary trace inductance (LSEC), esp. low-voltage/high current outputs View detailed help on this error 205
Wire gauge is less than recommended minimum. Consider a parallel winding technique (bifilar, trifilar), increase size of transformer (larger BW) or reduce margin (M). View detailed help on this error 221
Drain voltage close to BVDSS at maximum OV threshold Verify BVDSS during line surge, decrease VUVON_MAX or reduce VOR. View detailed help on this error 237
Secondary wire gauge is less than recommended minimum (26 AWG) Consider a parallel winding technique (bifilar, trifilar) for > 1.5 A outputs, increase size of transformer (larger BW) or reduce margin (M). View detailed help on this error 232