Buck-boost regulator with converter bypass function

A method comprising:

• receiving an input voltage at an input of a regulator and providing an output voltage at an output of the regulator, the providing the output voltage including:
• comparing the output voltage to a first threshold;
• comparing the output voltage to a second threshold;
• providing voltage to the output of the regulator using a boost controller when the output voltage is below the first threshold voltage;
• and
• providing voltage to the output of the regulator using a buck controller when the output voltage is above the second threshold voltage;
• and
• providing the input voltage at the output of the regulator when the output voltage is between the first and second threshold voltages, wherein the first threshold voltage is below the second threshold voltage.

A system comprising:

• an inductor having a first terminal and a second terminal;
• a regulator including an input configured to receive an input voltage and an output configured to provide an output voltage, the regulator including:
• a first switch coupled to the first terminal of the inductor and to the input of the regulator;
• a second switch coupled to the first terminal of the inductor and to ground;
• a third switch coupled to the second terminal of the inductor and to the output of the regulator;
• a fourth switch coupled to the second terminal of the inductor and to ground;
• a boost controller configured to compare the output voltage to a first threshold and to provide voltage to the output when the output voltage is below a first threshold voltage;
• and
• a buck controller configured to compare the output voltage to a second threshold and to provide voltage to the output when the output voltage is above a second threshold voltage;
• and
• wherein the regulator is configured to provide the input voltage at the output when the output voltage is between the first and second threshold voltages, wherein the first threshold voltage is below the second threshold voltage.