Square Loop Cores

Square loop cores

Square Loop Cores manufactured with cobalt based amorphous alloy allow the design of mag amps that can operate at higher frequencies than previously possible.
Their combination of magnetic properties enable mag amps to provide unparalleled precision and efficiency in output regulation.

Square loop BH

-Square Loop Cores Physical and Magnetic Properties

square-loop-properties

-Square Loop Cores Application and Benefits

Applications
Mag amps are particularly well suited for outputs with currents of 1 amp to several tens of amps, although they are also used at lower currents where tight regulation and efficiency are extremely important. Conventional regulated outputs are limited at higher frequencies and output currents. Linear regulators cannot handle output currents that exceed one or two amperes efficiently, and thus require heat sinking schemes, which increase the size of the power supply. Independent switched-mode sub-regulators avoid this inefficiency, but usually require circuitry which is more complex, expensive and less reliable than a mag amp. Standard sizes are available from 9.6 mm to 34.1 mm OD and the possibility of manufacturing custom sizes also exists. Core coatings meeting UL94V-0 and temperature class F are available upon request.
Benefits
Square Loop magnetic cores are specifically designed to exhibit an extremely square dc hysteresis loop and high Bsat resulting in the following important benefits:

  • Low Saturated Permeability
  • Low Coercive Field - including a small reset current
  • Low Profile - enabling weight and volume reduction of up to 50%
  • Low Loss - resulting from micro-thin cobalt based amorphous ribbon (18um)

-Square Loop Cores (Standard Core Size Table and Ordering Info)

toridal_order

CORE

FINISHED DIM.

ODx IDx HT (mm)

Lm

(Cm)

Ac

(Cm2)

Core

Wt. (gm)

Window

Area (wa) (Cm2)

Flux

Capacity (µWb)
UM1303P-CAS

14.7 x 7.9x5.1

3.50

0.041

1.1

0.49

4.7

UM1603P-CAS

17.8 x 11.1 x 5.1

4.50

0.041

1.4

0.96

4.7

UM1903P-CAS

21.2x11.1x5.1

5.00

0.082

3.1

0.96

9.3

UM2303P-CAS

25 x 14.9 x 5.1

6.19

0.081

3.8

1.68

9.2

UM 805P-CAS

9.6 x 4.0 x 6.0

2.12

0.066

1.1

0.13

7.6

UM 905P-CAS

11 x 5.5 x 5.7

2.52

0.054

1.0

0.24

6.2

UM1005P-CAS

11 x 5.5 x 5.7

2.59

0.060

1.2

0.24

6.9

UM1305P-CAS

14.4 x 7.9 x 6.6

3.46

0.057

1.5

0.49

6.5

UM1405P-CAS

15.8 x 7.9 x 6.6

3.67

0.083

2.3

0.49

9.4

UM1805P-CAS

20.8 x 10.8 x 6.7

4.88

0.110

4.0

0.92

12.0

UM2705P-CAS

29.5 x 14.8 x 6.6

6.89

0.200

10.4

1.72

22.8

UM1506P-CAS

17.1 x 7.8 x 8.2

3.87

0.140

4.2

0.48

16.0

UM1906P-CAS

21.3 x 11.1 x 8.2

4.99

0.160

6.1

0.90

18.0

UM2008P-CAS

22.2 x 11 x 10.2

5.15

0.240

9.4

0.96

27.4

UM2510P-CAS

27.8 x 17.3 x 11.4

7.01

0.241

12.8

2.28

27.5

S (=Br/Bmax at 5Khz, 0.50e) can be :>=83%,2>=86%,3>=92% (Other squareness available on special request)
X : L/P/V(box material) can be : Z =Zytel 70g33L. temp. class-1200c, flam. Rating-HB
F=Zytel FR50.temp. class-1300C, flam. Rating-UL94V0
R=Rynite FR530, temp. class- 1500C, flam. Rating-UL94V
E= Epoxy coated/encapsulated Ordering Info Square-Loop-Ordering-code           trademark