Jensen Huang met his future wife Lori Mills at Oregon State University while studying electrical engineering in the early 1980s. The pair were lab partners.
They married in 1985 and have two children, Madison and Spencer.
Earlier this week, Huang admitted to having been “unfaithful” to his wife and apologised for hurting her and their children.
In 2007, the couple founded the Jen-Hsun and Lori Huang Foundation. The charitable fund has seen its assets surge in recent years, driven by the soaring value of Nvidia shares, and is estimated to be worth more than $9bn.
Its donations include tens of millions of dollars to engineering programmes at Oregon State and Stanford University.
Witt told the BBC that Jensen Huang has gone to great lengths to present himself as a family man, adding: “That’s very important to him.”
“He praises his wife, he talks about her in very glowing ways,” he added. “The fallout of this would be bad for anyone’s family.
“But for someone who has gone to such great lengths to cultivate an image of being a family guy and who keeps his children very close, it is very bad.”
Additional reporting by Tom McArthur in London, Ayeshea Perera and Tessa Wong in Singapore and Helen Davidson in Sydney