DoubleLine Capital CEO Jeffrey Gundlach said Friday the Federal Reserve is failing in its battle against a spike of inflation, and the central bank is likely to accelerate its rate hikes this year.

"One thing we can all agree on is inflation just continues to surprise on the upside. The Fed is obviously behind the curve. ... It's going to have to raise rates more than the market still thinks," Gundlach said Friday on CNBC's "Halftime Report." "My suspicion is they are going to keep raising rates until something breaks, which always happens."