The OCC control approach for single-phase boost PFC rectifier without the requirement of input voltage sensing or complicated two loops compensation design could result in high power factor, low harmonic input current ingredients operation over universal loads in continuous conduction mode. The trialing triangle modulation adopted in this paper makes the acquisition of the average input current an easy process. The implementation of the controller is based on boost topology power circuit with low speed, low resolution A/D converters and economic FPGA development board. Experimental results demonstrate that the proposed PFC rectifier could get PF value up to 0.999 and the minimum THD down to 1.9% by a 120 W prototype.