DC/DC Controller, 28V In, 5.5V Out, 15A, 500kHz, VQFN
TPS51124RGETG4??
Dual, Synchronous Step Down Controller for Low Voltage System Power 24-VQFN -40 to 85
Dual 5.5V 20A DC/DC Controller, 28V Input, 460kHz, VQFN
Dual 5.5V 15A DC/DC Controller, 380kHz, 24V Input, VQFN