Control system with voltage-to-time converter for combined buck-boost converter using a single inductor

A system comprising:

• a power converter coupled to receive an input voltage configured to generate a boost voltage on a boost voltage node and further configured to generate a buck voltage on a buck voltage node, wherein the power converter includes a control system having an integrator circuit, wherein the integrator circuit includes:
• a voltage-to-time converter circuit having a first input coupled to receive a first feedback signal based on the boost voltage, and a second input coupled to receive a second feedback signal based the buck voltage, wherein the voltage-to-time converter includes a first comparator configured to generate a comparator output signal at a first level if the a voltage of the first feedback signal is greater than a voltage of the second feedback signal, and further configured to generate the comparator output signal at a second level if the voltage of the second feedback signal is greater than the voltage of the first feedback signal;
• wherein an output circuit of the voltage-to-time converter is configured to generate first and second output signals based on the comparator output signal, wherein the output circuit is configured to provide a selected one of the first or second output signals at the first level for a duration dependent on a difference in voltages between the first feedback signal and the second feedback signal.