EVAL-IH-R5IPB-A-V1 Evaluation board
User Guide
Appendix
6
Appendix
6.1
Resonant inductor specification
The experiment results presented in this document were conducted with a connecting and external coil, suitable
for induction cooking systems. As known, the behavior of the SEPR converter is largely dependent on the
particular coil and cooking vessel that is used. In particular, the coil inductance, diameter, and distance to the
vessel are important factors to consider when an induction cooking system is designed. The design of the
resonant coil is outside the scope of this document. However, in order to provide a reference for the results which
have been presented, the details of the resonant coil are shown below. Figure 18 depicts a picture of the coil with
the dimensions and the distance to the vessel that should be maintained when the latter is placed on the coil.
Finally, Figure 19 depicts the frequency dependence of the series resistance and inductance values of the coil,
without the vessel, and with the vessel positioned on top.
(a)
(b)
Figure 18
Picture of the resonant coil (a) and positioning of the cooking vessel (b)
Figure 19
Values of the equivalent series resistance (blue curve) and inductance (red curve) of the
resonant coil without the vessel (solid) and with the vessel (dashed)
Application Note
25 of 34
V 1.1
2019-11-25