Blocking and Startup Transistor Control in Voltage Converters

In a voltage converter, a blocking transistor has a conduction path between a power terminal and a converter terminal. A body diode of the blocking transistor: conducts current from the power terminal to the converter terminal; and blocks current from the converter terminal to the power terminal. A first switching transistor has a conduction path between the converter terminal and a switching terminal. A second switching transistor has a conduction path between the switching terminal and a ground terminal. A first gate driver has an output coupled to a control terminal of the first switching transistor. A second gate driver has an output coupled to a control terminal of the second switching transistor. A driver circuit has an output coupled to a control terminal of the blocking transistor. A bootstrap terminal of the driver circuit is coupled to a bias input of the first gate driver.