DC capacitor balancing

A method for balancing voltages of capacitors in an electronic circuit, the method comprising:

• receiving a first voltage of a first capacitor of the electronic circuit, a second voltage of a second capacitor of the electronic circuit, and an output current of the electronic circuit;
• generating a signal representing charging of an inductor based on the output current, the signal having a switching frequency and a duty cycle;
• detecting an imbalance between the first voltage and the second voltage based on a polarity of the output current;
• and
• based on the imbalance between the first voltage and the second voltage and based on the signal representing charging of the inductor, causing transfer of charge between the first capacitor and the second capacitor using the inductor.

The method of claim of 8, further comprising:

• receiving the first voltage across the first capacitor at a first time instance;
• generating a first error signal value based on the first voltage and a reference voltage;
• comparing the first error signal value to the signal representing charging of the inductor;
• and
• causing a first current to flow from the first capacitor to the inductor.

The method of claim of 10, further comprising:

• receiving a third voltage across the first capacitor at a second time instance;
• generating a second error signal value based on the third voltage and the reference voltage;
• comparing the second error signal value to the signal representing charging of the inductor;
• and
• causing a second current to flow from the inductor to the second capacitor.

A computer-readable medium having stored thereon, computer-executable instructions that, when executed by a device, cause the device to perform functions comprising:

• receiving a first voltage of a first capacitor of an electronic circuit, a second voltage of a second capacitor of the electronic circuit, and an output current of the electronic circuit;
• generating a signal representing charging of an inductor based on the output current, the signal having a switching frequency and a duty cycle;
• detecting an imbalance between the first voltage and the second voltage based on a polarity of the output current;
• based on the imbalance between the first voltage and the second voltage and based on the signal representing charging of the inductor, causing transfer of charge between the first capacitor and the second capacitor using the inductor, wherein the inductor is substantially discharged based on the switching frequency and the duty cycle during transfer of charge between the first capacitor and the second capacitor;
• wherein the signal representing charge of the inductor is a substantially triangular carrier waveform.