This paper presents an integrated synchronous gate driver with complementary slope sensing zero voltage switching detector and high voltage level shifter to enable phase-shifted full-bridge dc-dc converters with ZVS. The proposed CSSZVSD not only achieves a higher efficiency by minimizing the reverse conduction loss and the switching loss of the power FETs but also eliminates the converter potential short-circuit risk. The proposed HVLS in the gate driver with dynamically tailed current and noise cancellation block improves the driver efficiency and enhances the converter reliability.