In order to increase the conversion efficiency of a PV system, a high efficiency PV power inverter with simple control methodology is required. To satisfy this requirement, an improved single phase inverter using soft switching technique is proposed. The proposed power inverter circuit is composed of a ZVT PWM boost DC- DC converter and a LLCC resonant inverter. The DC link voltage amplitude is control by ZVT. PWM boost dc dc converter with soft switching transition. The stable sinusoid ac output voltage is inverted from dc link voltage via a LLCC inverter. The effectiveness of the proposed inverter for small PV system is verified by simulation result.