This paper presents an isolated resonant zero-voltage switching ZVS converter with a diode-connected MOSFET in a rectifier. The active resonant network is composed of a transformer leakage inductance, a resonant capacitor and a diode-connected MOSFET. The output capacitor of the main switches together with their reverse-recovery diodes provide zero-voltage switching condition for all switches. The input voltage/current of the proposed circuit is 0.35V/500uA while the output voltage/current is 1.5V/75uA. The simulated circuit in PSIM is presented to verify the proposed converter performance.