MR4530 datasheet(13/43 Pages) SHINDENGEN

13 / 43 page

Shindengen Electric MFG.CO.,LTD

- 13 -

This design procedure provides an example of an electrical design procedure. Confirm that insulation materials,

insulation configurations, and structures meet the safety standards specified by the relevant authorities.

4.1 Design flow chart

Selecting primary circuit

components

Main transformer design

Specifications determined

Cooling design

Trial manufacture

Operational checks

Completion

problems

Problem

found

Refer to:

[4.2 Reference conditions for main transformer design]

Refer to:

[4.3 Reference formulas for main transformer design]

P.13

P.14

Refer to: [4.6 Cooling design]

P.18

Refer to:

[4.4 Selecting constants for peripheral components]

Refer to: [4.5 Selecting constants for droop circuit]

P.16

P.17

4.2 Reference conditions for main transformer design

The values given below are provided for reference only. They should be adjusted to suit specific load conditions.

Reference value

Symbol

Unit

MR45XX

Series

MR47XX

Series

MR40XX

Series

Minimum input voltage

VAC(min)

―

Rated output voltage

―

Rated output current

―

Maximum output current

Io(max)

―

Efficiency

0.80 - 0.85

Minimum oscillation frequency

f(min)

kHz

30k -

50kHz

25k -

40kHz

25k -

50kHz

ON duty ratio

0.40～0.55

0.28～0.55

0.50～0.70

Control coil voltage

VNC

15 - 17V

Effective cross-sectional area of transformer core

―

Magnetic flux density variation

ΔB

250 - 320mT

Coil current density

A/mm

4 - 6A/mm

4. Design procedure

MR4000 Series

Application Note

MR4530 Datasheet(PDF) 13 Page - Shindengen Electric Mfg.Co.Ltd

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