參數(shù)資料
型號： AN-17
英文描述： Flyback Transformer Design for TOPSwitch Power Supplies
中文描述： 回掃變壓器設計的TOPSwitch電源
文件頁數(shù)： 6/12頁
文件大?。?/td> 133K
代理商： AN-17
AN-17
C
6/96
6
Figure 6. Spreadsheet for ST202A Flyback Transformer Design
.
1
2
3
4
5
6
7
8
9
1 0
1 1
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
2 0
2 1
2 2
2 3
2 4
2 5
2 6
2 7
2 8
2 9
3 0
3 1
3 2
3 3
3 4
3 5
3 6
3 7
3 8
3 9
4 0
4 1
4 2
4 3
4 4
4 5
4 6
4 7
4 8
4 9
5 0
5 1
5 2
5 3
5 4
5 5
5 6
5 7
5 8
5 9
6 0
6 1
6 2
6 3
6 4
6 5
6 6
6 7
6 8
6 9
7 0
7 1
7 2
7 3
7 4
7 5
7 6
7 7
7 8
7 9
8 0
8 1
8 2
A
B
C
D
E
F
ENTER APPLICATION VARIABLES
VACMIN
VACMAX
fL
fS
VO
PO
n
Z
VB
tC
CIN
INPUT
OUTPUT
85
265
60
Volts
Volts
Hertz
Hertz
Volts
Watts
Minimum AC Input Voltage
Maximum AC Input Voltage
AC Mains Frequency
TOPSwitch Switching Frequency
Output Voltage
Output Power
Efficiency Estimate
Loss Allocation Factor
Bias Voltage
Bridge Rectifier Conduction Time Estimate
Input Filter Capacitor
100000
7.5
15
0.8
0.5
10.4
3.2
33
Volts
mSeconds
uFarads
ENTER TOPSWITCH VARIABLES
VOR
VDS
VD
VDB
KRP
85
10
0.4
0.7
Volts
Volts
Volts
Volts
Reflected Output Voltage
TOPSwitch on-state Drain to Source Voltage
Output Winding Diode Forward Voltage Drop
Bias Winding Diode Forward Voltage Drop
Ripple to Peak Current Ratio (0.4 < KRP < 1.0)
0.92
ENTER TRANSFORMER CORE/CONSTRUCTION VARIABLES
EE22-Z
AE
0.41
LE
3.96
AL
2400
BW
8.43
M
0
L
2
NS
5
Core Type
Core Effective Cross Sectional Area
Core Effective Path Length
Ungapped Core Effective Inductance
Bobbin Physical Winding Width
Safety Margin Width (Half the Primary to Secondary Creepage Distance)
Number of Primary Layers
Number of Secondary Turns
cm^2
cm
nH/T^2
mm
mm
DC INPUT VOLTAGE PARAMETERS
VMIN
VMAX
93 Volts
375 Volts
Minimum DC Input Voltage
Maximum DC Input Voltage
CURRENT WAVEFORM SHAPE PARAMETERS
DMAX
IAVG
I P
I R
IRMS
0.51
0.20 Amps
0.74 Amps
0.68 Amps
0.32 Amps
Duty Cycle at Minimum DC Input Voltage (VMIN)
Average Primary Current
Peak Primary Current
Primary Ripple Current
Primary RMS Current
TRANSFORMER PRIMARY DESIGN PARAMETERS
LP
NP
NB
ALG
BM
BAC
ur
LG
BWE
OD
INS
DIA
AWG
CM
CMA
623 uHenries
54
7
nH/T^2
2085
Gauss
Gauss
Primary Inductance
Primary Winding Number of Turns
Bias Winding Number of Turns
Gapped Core Effective Inductance
Maximum Flux Density (2000 < BM < 3000)
AC Flux Density for Core Loss Curves (0.5 X Peak to Peak)
Relative Permeability of Ungapped Core
Gap Length (Lg >> 0.051 mm)
Effective Bobbin Width
Maximum Primary Wire Diameter including insulation
Estimated Total Insulation Thickness (= 2 * film thickness)
Bare conductor diameter
Primary Wire Gauge (Rounded to next smaller standard AWG value)
Bare conductor effective area in circular mils
Primary Winding Current Capacity (200 < CMA < 500)
215
959
1845
0.22
mm
16.86
mm
0.31 mm
0.05
mm
0.26 mm
30 AWG
102
Cmils
321
Cmils/Amp
TRANSFORMER SECONDARY DESIGN PARAMETERS
ISP
ISRMS
IO
IRIPPLE
7.95 Amps
3.36 Amps
2.00 Amps
2.70 Amps
Peak Secondary Current
Secondary RMS Current
Power Supply Output Current
Output Capacitor RMS Ripple Current
CMS
AWGS
DIAS
ODS
INSS
1079
Cmils
Secondary Bare Conductor minimum circular mils
Secondary Wire Gauge (Rounded up to next larger standard AWG value)
Secondary Minimum Bare Conductor Diameter
Secondary Maximum Insulated Wire Outside Diameter
Maximum Secondary Insulation Wall Thickness
19 AWG
0.91 mm
1.69 mm
0.39
mm
VOLTAGE STRESS PARAMETERS
VDRAIN
PIVS
PIVB
573 Volts
42 Volts
59 Volts
Maximum Drain Voltage Estimate (Includes Effect of Leakage Inductance)
Output Rectifier Maximum Peak Inverse Voltage
Bias Rectifier Maximum Peak Inverse Voltage
ADDITIONAL OUTPUTS
VX
VDX
NX
PIVX
12
0.7
Volts
Volts
Auxiliary Output Voltage
Auxiliary Diode Forward Voltage Drop
Auxiliary Number of Turns
Auxiliary Rectifier Maximum Peak Inverse Voltage
8.04
68 Volts
相關PDF資料
PDF描述
AN-18 TOPSwitch Flyback Transformer Construction Guide
AN-19 TOPSwitch Flyback Power Supply Efficiency
AN-20 Transient Suppression Techniques for TOPSwitch Power Supplies
AN-22 OBSOLETE when inventory is depleted. 10% tolerance no l
AN-23 TinySwitch Flyback Design Methodology
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