Differential controller with regulators

A method of controlling a load with a differential controller comprising a first regulator and a second regulator, the method comprising:

• sensing, by a feedback sensor, a load condition to generate a feedback signal, the load condition associated with the load, wherein the load is between a first regulator output of the first regulator and a second regulator output of the second regulator;
• generating, by a first amplifier, a first regulator control signal for the first regulator using the feedback signal and a set voltage;
• and
• generating, by a second amplifier, a second regulator control signal for the second regulator using the first regulator control signal and a common mode control voltage, wherein the first regulator output and the second regulator output are based at least in part on the common mode control voltage.

A differential controller, comprising;

• means for generating a first regulator output signal at a first regulator output based at least in part on a first regulator control signal received at a first regulator input;
• means for generating a second regulator output signal at a second regulator output based at least in part on a second regulator control signal received at a second regulator input;
• means for generating a feedback signal based on a condition at a load between the first regulator output and the second regulator output;
• means for generating the first regulator control signal using the feedback signal and a set voltage;
• and
• means for generating the second regulator control signal using the first regulator control signal and a common mode control voltage, wherein the first regulator output and the second regulator output are based at least in part on the common mode control voltage.

A differential controller, comprising;

• a first regulator configured to generate a first regulator output signal at a first regulator output based at least in part on a first regulator control signal and a supply voltage;
• a first control circuit configured to generate the first regulator control signal using a feedback signal indicating a condition of a load between the first regulator output and a second regulator output;
• a second regulator configured to generate a second regulator output signal at the second regulator output, wherein the second regulator output signal is based at least in part on a second regulator control signal and the supply voltage;
• a second control circuit configured to generate the second regulator control signal using the first regulator control signal and a common mode control signal;
• and
• a common mode voltage circuit configured to generate the common mode control signal based at least in part on the supply voltage, wherein the common mode voltage circuit responds to a change in the supply voltage by changing the common mode control signal.