INA3221: INA3221

Part Number: INA3221

heloo im new at this i need you help ver what my problem i got fryed 4gpus Msi GTX 1060 Gaming X becase of putting 1 of them in power supply when it was when i took it to service they told me power controller/generator is dead...i have read part number on it and its INA3221 TI 691 CROS I CANT FIND IT EXACTLY THIS MODEL  ANYWHERE I found INA3221 ti but after is differrent INA3221AIRGVT etc...i dont undestand meanings or differences....can anybody HELP me? will it fit to my GPU if i buy it from IT website?