Power conversion circuit, and method for producing power converter

A power conversion circuit, comprising:

• a transformer having first and second terminals on a primary side, and third and fourth terminals on a secondary side;
• a first circuit connected to the first and second terminals;
• a second circuit connected to the third and fourth terminals;
• a first inductor connected in series to the first terminal;
• and
• a second inductor connected in series to one of the third terminal and the fourth terminal that results in a lowest minimum resonance frequency between the first terminal and the one of the third terminal and the fourth terminal relative to a minimum resonance frequency between the first terminal and another one of the third terminal and the fourth terminal.

A method for producing a power converter, comprising:

• a preparation step of preparing a transformer having first and second terminals on a primary side and third and fourth terminals on a secondary side;
• a measurement step of
• measuring first minimum impedance between the first terminal and the third terminal,
• measuring a second minimum impedance between the first terminal and the fourth terminal,
• measuring a third minimum impedance between the second terminal and the third terminal, and
• measuring a fourth minimum impedance between the second terminal and the fourth terminal;
• a determination step of determining which of the first, second, third, and fourth minimum impedances is highest;
• and
• a step of connecting
• a first inductor in series with the first terminal and a second inductor in series with the third terminal in a case that the first minimum impedance is highest,
• the first inductor in series with the first terminal and the second inductor in series with the fourth terminal in a case that the second minimum impedance is highest,
• the first inductor in series with the second terminal and the second impedance in series with the third terminal in a case that the third minimum impedance is highest, and
• the first inductor in series with the second terminal and the second inductor in series with the fourth terminal in a case that the fourth minimum impedance is highest.

A method for producing a power converter, comprising:

• a preparation step of preparing a transformer having first and second terminals on a primary side and third and fourth terminals on a secondary side;
• a measurement step of
• measuring a first minimum resonance frequency between the first terminal and the third terminal,
• measuring a second minimum resonance frequency between the first terminal and the fourth terminal,
• measuring a third minimum resonance frequency between the second terminal and the third terminal, and
• measuring a fourth minimum resonance frequency between the second terminal and the fourth terminal;
• a determination step of determining which of the first, second, third, and fourth minimum resonance frequencies is lowest;
• and
• a step of connecting
• a first inductor in series with the first terminal and a second inductor in series with the third terminal in a case that the first minimum resonance frequency is lowest,
• the first inductor in series with the first terminal and the second inductor in series with the fourth terminal in a case that the second minimum resonance frequency is lowest,
• the first inductor in series with the second terminal and the second impedance in series with the third terminal in a case that the third minimum resonance frequency is lowest, and
• the first inductor in series with the second terminal and the second inductor in series with the fourth terminal in a case that the fourth minimum resonance frequency is lowest.