Table of Contents

1 Scope
2 References
3 Definitions
4 Circuits
4.1 Voltampere ratings
4.2 Circuit topology
5 Electrical tests
5.1 Ratio of transformation
5.2 Inductance (impedance) unbalance
5.3 Polarity tests
5.4 Electric strength test
5.5 Induced voltage test
5.6 Leakage inductance
5.7 Magnetizing inductance measurement
5.8 Transformer capacitance measurement
5.9 Transformer loss measurements
5.10 Volt-second area rating
5.11 Resonant frequency
5.12 Temperature rise tests
5.13 Acoustic noise
5.14 Shielding of transformers and inductors
5.15 Audible noise tests
Figures
1 Nonisolated DC-DC convertors
2 Low-power popular converter configurations (20 -
      200 W)
3 High-power popular converter configurations
      (100 W - 1 kW)
4 Half bridge and full bridge series resonant
      convertors
5 Typical high-potential test showing secondary one
      under test
6 Typical high-potential test of inductor
7 Bipolar excitation core loss test circuit
8 Bipolar excitation core loss test circuit
9 Bipolar excitation core loss test circuit
Tables
1 Sound level corrections for noise tests
Appendixes
A Inductance measurement methods for high-frequency
      power magnetics
A1 Sinusoidal excitation
B Bibliography
Appendix Figures
A1 Inductance meter
A2 Hay bridge

Abstract

Applies to saturating and non-saturating transformers and inductors that are used in electronic power conversion equipment.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	Institute of Electrical & Electronics Engineers
Pages
ISBN