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Hexa-Path Magnetics

Document 613-10

Document 613-10 Revised 08/20/15

Connecting primary windings in series

volt-time product increase, energy storage and

Irms remain the same,

but DCR increases.

Example: For HPH1-1400L, connect three primary windings in series:

= 0.130 × 3 = 0.39 Ohms

VT

= 70.2 V-µsec

= 0.74

Connecting secondary windings in series

Irms remains

the same, but DCR increases.

Example: For HP1-1400L, connect three secondary windings in series:

= 0.130 × 3 = 0.39 Ohms

= 0.74

Create a 1 : 1 gate drive transformer

Choose HP1-1400L

DCR

Volt-time Peak energy

Part

Inductance

max

product

storage

Isat

Irms

number

(µH)

(Ohms)

(V-µsec)

(µJ)

(A)

(A)

HP1-1400L

89.6 ±25%

0.130

23.4

N/A

N/A

0.74

Formulas used to calculate electrical characteristics

Connecting windings in series

Connecting windings in parallel

DCR = 1

1

4

Pri

Sec

5

6

3

2

11

10

12

9

8

7

Primary:

L= 806.4 µH

DCR= 0.39

rms= 0.74 A

VT = 70.2 V-µsec

I

Secondary:

DCR= 0.39

rms= 0.74 A

I