Induction cooker power management chip VIPer12a and VIPer22a difference is only the power is different, the other are the same, but the power of VIPer22a is larger, the power rate is 12W. The VIPer12a does less power, and the working rate is 6W. The two functions are exactly the same, the difference is the power is different. In actual use, VIPer22a can completely replace VIPer12a, but VIPer12a can not replace VIPer22a.