Fuel pump boost system

A fuel delivery system includes a fuel pump, a controller, and a boost circuit. The fuel pump has an electric motor that includes a winding configured to operate with a maximum efficiency at a first voltage for an expected load. The controller includes a pulse width modulator for generating a driving signal for the electric motor. Under normal operating conditions, the boost circuit acts as a pass-through and the driving signal is modulated at the first voltage to control the pump output. However, when a load greater than the expected load is applied to the electric motor, the boost circuit acts to scale the driving signal to a second voltage that is greater than the first voltage. The second voltage drives the electric motor at a voltage beyond the maximum efficiency but provides overall improved system efficiency.