Heart rate at 190+ for a 16 year old?

I usually do a high intense cardio work out for 30 mins minimum until failure I notice my heart rate goes up to 190+ and stays like that But it usually happens during half way of my cardio work out But yeah, is 190 bpm bad for a 16 year old? I remember learning about the 220 minus your age But I work out with my friend and he gets 180 But then again he does half of the things I do