Power electronic circuit and power module

A power electronic circuit, comprising:

• a reference ground;
• a differential mode loop unit having a capacitance component, a switch and an electronic component, wherein the capacitance component has a first end, the switch has a first end and connects in series with the capacitance component, the electronic component has a first end, and the electronic component connects in series with the capacitance component and the switch;
• a shell;
• and
• a plurality of conversion circuits disposed in the shell, wherein the plurality of conversion circuits have the differential mode loop unit disposed therein, and the number of the differential mode loop unit is more than one;
• wherein the capacitance component and the switch are packaged in a power module, the power module has a trace and at least one output pin connected to the reference ground, wherein the first end of the switch or the first end of the electronic component are only connected to the first end of the capacitance component through the trace, and the first end of the capacitance component is connected to the reference ground through the output pin,
• wherein the plurality of conversion circuits comprise a boost circuit and a flyback circuit, wherein
• the boost circuit comprises a first transistor switch, a first diode and an output filter capacitor, the first end of the first transistor switch is electrically connected to the anode of the first diode, the cathode of the first diode is electrically filter capacitor is electrically connected to the second end of the first transistor switch;
• the flyback circuit comprises a second transistor switch and a transformer, the first end of the second transistor is electrically connected to one end of th primary winding of the transformer, and the other end of the primary winding of the transformer is electrically connected to the cathode of the first diode and the first end of the output filter capacitor;
• wherein the first transistor switch, the first diode, the output filter capacitor and the second transistor switch are packaged in the power module, and the second end of the output filter capacitor and the second end of the second transistor are both electrically connected to the output pin.