Check literature for know binding sites of your transcription factor on promoter region. Based on that design your primers for CHIP assay. And if nothing is known about transcription factor and its binding site, go for CHIP sequencing assay. Qiagen provides kits for CHIP sequencing assay.
But chip seq is quite expensive..... So I want to go with the random primers.. Is there any bioinformatic tool to know the specific protein binding site on promoter???