1
Hiper_PFS_Boost_04241
3; Rev.1.4; Copyright
Power Integrations 2011 INPUT INFO OUTPUT UNIT
Hiper_PFS_Boost_042413_Rev1-4.xls;
Continuous Mode Boost Converter Design
Spreadsheet
48
LP_TOL 10 % Tolerance of PFC Inductor Value
49
50
Inductor Construction
Parameters
51
Core Type
Sendu
st
Sendust
Enter "Sendust", "Pow Iron" or "Ferrite"
52
Core Material
Auto 125u
Select from 60u, 75u, 90u or 125 u for Sendust cores.
Fixed at PC44 or equivalent for Ferrite cores. Fixed at 52
material for Pow Iron cores.
53
Core Geometry
Auto TOROID
Select from Toroid or EE for Sendust cores and from EE,
or PQ for Ferrite cores
54
Core
77324(
OD=36
.7)
77324(OD
=36.7)
Core part number
55
AE 67.8 mm^2 Core cross sectional area
56
LE 89.8 mm Core mean path length
57
AL 119 nH/t^2 Core AL value
58
VE 6088 cm^3 Core volume
59
HT 11.35 mm Core height/Height of window
60
MLT 43.4 mm Mean length per turn
61
BW N/A mm Bobbin width
62
NL 155 Inductor turns
63
LG N/A mm Gap length (Ferrite cores only)
64
ILRMS 3.39 A Inductor RMS current
65
Wire type
Litz Litz
Select between "Litz" or "Regular" for double coated
magnet wire
66
AWG 38 AWG Inductor wire gauge
67
Filar 90 Inductor wire number of parallel strands
68
OD 0.102 mm Outer diameter of single strand of wire
69
AC Resistance Ratio 1.70
Ratio of AC resistance to the DC resistance (using Dowell
curves)
70
J 4.64
A/mm
^2
Estimated current density of wires. It is recommended that
4 < J < 6
71
BM_TARGET N/A Gauss Target flux density at VACMIN (Ferrite cores only)
72
BM 2579 Gauss Maximum operating flux density
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BP 6954 Gauss Peak Flux density (Estimated at VBROWNOUT)
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LPFC_CORE_LOSS 1.40 W Estimated Inductor core Loss
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LPFC_COPPER_LOSS 1.75 W Estimated Inductor copper losses
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LPFC_TOTAL LOSS 3.14 W Total estimated Inductor Losses
77
78
79
Critical Parameters
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IRMS 3.09 A AC input RMS current
81
IO_AVG 1.40 A Output average current
82
83
84
85
Output Diode (DO)
86
Part Number
STTH1
2R06
STTH12R
06
PFC Diode Part Number
87
Type
ULTRAFA
ST
Diode Type - Special - Diodes specially catered for PFC
applications, SiC - Silicon Carbide type, UF - Ultrafast
recovery type
88
Manufacturer ST Diode Manufacturer
89
VRRM 600 V Diode rated reverse voltage
90
IF 12 A Diode rated forward current
91
TRR 25 ns Diode Reverse recovery time
92
VF 1.1 V Diode rated forward voltage drop
93
PCOND_DIODE 1.54 W Estimated Diode conduction losses