Hi SUDHIR KUMARPANDA,
Welcome to Microsoft Community.
The TPM chip is a device provided by the computer hardware manufacturer. Usually, the driver download page of the brand manufacturer's official website will provide the download. Note, however, that since it is a hardware device, you need to verify that your computer's TPM chip supports the upgrade before you are ready to download and install TPM2.0. If you currently want to upgrade your PC to Windows 11 but see that your PC's TPM2.0 does not meet the requirements, contact your PC manufacturer to confirm the information.
If there is anything not clear, please do not hesitate to let me know.
Best Regards,
Manson - MSFT | Microsoft Community Support Specialist