Multiphase power converter with current balancing

An apparatus, comprising:

• a voltage control circuit having an output;
• a first current control circuit having a first current control circuit input coupled to the output of the voltage control circuit, having a second current control circuit input;
• a second current control circuit having a third current control circuit input coupled to the output of the voltage control circuit and having a fourth current control circuit input;
• and
• a current balance circuit having a first current balance circuit output and a second current balance circuit output, the first current balance circuit output coupled to the second current control circuit input, and the second current balance circuit output coupled to the fourth current control circuit input, the current balance circuit configurable to generate a first current at the first current balance circuit output and a second current at the second current balance circuit output, the first and second currents based on a difference between a first average current of the first current control circuit and a second average current of the second current control circuit.

An apparatus, comprising:

• a first current control circuit having a first transistor, the first current control circuit having a first clock input, a first error current input, a first current balance input, and a first output, the first current control circuit configurable to combine a first error current from the first error current input with a first balance current from the first current balance input to produce a first reference current, and to change a state of the first transistor in response to a first current through the first transistor reaching the first reference current;
• a second current control circuit having a second transistor, the second current control circuit having a second clock input, a second error current input, a second current balance input, and a second output, the second current control circuit configurable to combine a second error current from the second error current input with a second balance current from the second current balance input to produce a second reference current, and to change a state of the second transistor in response to a second current through the second transistor reaching the second reference current;
• and
• a current balance circuit having a first input, a second input, a first current output, and a second current output, the first input coupled to the first output, the second input coupled to the second output, the first current output coupled to the first current balance input, and the second current output coupled to the second current balance input, the current balance circuit configurable to produce the first balance current at the first current output and the second balance current at the second current output in response to a difference between the first current and the second current.