EPR-000013 Datasheet, PDF (19/56 Pages) Power Integrations, Inc. – Engineering Prototype Report (EP13) 43 W / 57 W pk, 5 Output TOPSwitch팜-GX (TOP246Y) Power Supply

08-May-2001
EPR-000013 – 43 W Multiple Output TOP246 Power Supply
CURRENT WAVEFORM SHAPE PARAMETERS
DMAX
0.31
Maximum Duty Cycle
IAVG
0.26 Amps
Average Primary Current
IP
1.39 Amps
Peak Primary Current
IR
1.10 Amps
Primary Ripple Current
IRMS
0.50 Amps
Primary RMS Current
TRANSFORMER PRIMARY DESIGN PARAMETERS
LP
458 µHenries Primary Inductance
NP
52
Primary Winding Number of Turns
NB
7
Bias Winding Number of Turns
ALG
169 nH/T^2
Gapped Core Effective Inductance
BM
1501 Gauss
Maximum Flux Density at PO, VMIN (BM<3000)
BP
BAC
ur
2565 Gauss
593 Gauss
1860
Peak Flux Density (BP<4200)
AC Flux Density for Core Loss Curves (0.5 X
Peak to Peak)
Relative Permeability of Ungapped Core
LG
0.57 mm
Gap Length (Lg > 0.1 mm)
BWE
OD
INS
DIA
21.8 mm
0.42 mm
0.06 mm
0.36 mm
Effective Bobbin Width
Maximum Primary Wire Diameter including
insulation
Estimated Total Insulation Thickness (= 2 * film
thickness)
Bare conductor diameter
AWG
28 AWG
Primary Wire Gauge (Rounded to next smaller
standard AWG value)
CM
161 Cmils
Bare conductor effective area in circular mils
CMA
321 Cmils/Amp
Primary Winding Current Capacity (200 < CMA <
500)
TRANSFORMER SECONDARY DESIGN PARAMETERS (SINGLE OUTPUT / SINGLE OUTPUT EQUIVALENT)
Lumped parameters
ISP
36.24 Amps
Peak Secondary Current
ISRMS
19.45 Amps
Secondary RMS Current
IO
13.64 Amps
Power Supply Output Current
IRIPPLE
13.86 Amps
Output Capacitor RMS Ripple Current
CMS
AWGS
DIAS
ODS
INSS
3889 Cmils
14 AWG
1.63 mm
10.90 mm
4.64 mm
Secondary Bare Conductor minimum circular mils
Secondary Wire Gauge (Rounded up to next
larger standard AWG value)
Secondary Minimum Bare Conductor Diameter
Secondary Maximum Outside Diameter for Triple
Insulated Wire
Maximum Secondary Insulation Wall Thickness
VOLTAGE STRESS PARAMETERS
VDRAIN
PIVS
603 Volts
18 Volts
Maximum Drain Voltage Estimate (Includes Effect
of Leakage Inductance)
Output Rectifier Maximum Peak Inverse Voltage
PIVB
60 Volts
Bias Rectifier Maximum Peak Inverse Voltage
Page 19 of 56
Power Integrations, Inc.
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