HP1-1400L Datasheet, PDF (8/10 Pages) Coilcraft lnc. – Hexa-Path Magnetics

Document 613-8
Hexa-Path Magnetics
Formulas used to calculate electrical characteristics
Connecting windings in series
Inductance = Inductance_table × (number of windings)²
DCR = DCR_table × number of windings
Isat = (Isat_table × 6) ÷ number of windings connected in series
Irms = Irmstable
Connecting windings in parallel
Inductance = Inductance_table
DCR = 1 ÷ [number of windings × (1 ÷ DCR_table)]
Isat = (Isat_table × 6) ÷ number of windings connected in series
Irms = Irms_table × number of windings
Create a 130 Watt, 1 : 1, two switch forward converter transformer
Choose HPH6-2400L
Vin = 36 – 57 Vdc; Vout = 12 V, 10.8 A
Part
number
HPH6-2400L
Inductance
(µH)
194 ±25%
DCR Volt-time Peak energy
max product storage Isat
(Ohms) (V-µsec)
(µJ)
(A)
0.030 131.9
N/A
N/A
Irms
(A)
2.90
Connecting primary windings in parallel
When primary windings (W_pri) are connected in parallel, DCR decreases,
Irms increases, and inductance and volt-time product remain the same.
Example: For HPH6-2400L, connect three primary windings in parallel:
Inductance = Inductancetable
= 194 µH
DCR = 1 ÷ [W_pri × (1 ÷ DCR_table)]
= 1 ÷ [(3 × (1 ÷ 0.030]) = 0.010 Ohms
VT = VT_table
= 131.9 V-µsec
Irms = Irmstable × Wpri
= 2.90 × 3 = 8.70 A
Connecting secondary windings in parallel
When secondary windings (W_sec) are connected in parallel, DCR
decreases and Irms increases.
Example: For HPH6-2400L, connect three secondary windings in
parallel:
DCR = 1 ÷ [Wsec × (1 ÷ DCRtable)]
= 1 ÷ [(3 × (1 ÷ 0.030)] = 0.010 Ohms
Irms = Irms_table × W_sec
= 2.90 × 3 = 8.70 A
1
2
3
Pri
10
11
12
Primary:
L = 194 µH
DCR = 0.01⏲
Irms = 8.7 A
VT = 131.9 V-µsec
4
5
6
Sec
7
8
9
Secondary:
DCR = 0.01⏲
Irms = 8.7 A
© Coilcraft, Inc. 2009
Specifications subject to change without notice.
Please check our website for latest information.
Document 613-8 Revised 01/23/09