Hello,
There are a few products which you can consider as a USB to I2C master.
The I2C master devices that we have are as follows.
All will require some form of application code running on the OS to control the device:
Using MPSSE and d2xx:
FT232HSee AN_135
MPSSE Basics. Also
MPSSE software examples exist.
UM232H is available for test, evaluation and reference.
Using LibFT4222 and d2xx:
FT4222HSoftware examples are provided with the library download.
UMFT4222EV-D is available for test, evaluation and reference.
HID class device
FT260LibFT260 can be used with Windows, software examples are provided with the LibFT260 library download.
UMFT260EV1A is available for test, evaluation and reference.
Schematics are provided in the modules linked above.
Note that the FT602 is not an appropriate product. This is a UVC video class device with built-in I2C master interface for video device configuration, not for general I2C master usage. It's likely the FT602 is overkill if you are just looking for an USB to I2C master bridge.
Best Regards,
FTDI Community