Radiation-tolerant, 3.5-V to 32-V input, 6-A synchronous step-down converter in a plastic package 30-WQFN -55 to 125
Texas Instruments
Texas Instruments - TPS7H4010MRNPSEP
$549.31
Texas Instruments - V62/19623-01XE
Texas Instruments - V62/19623-01XE-T
Texas Instruments - TPS7H4010MKGDSEP
$523.15
Texas Instruments - V62/19623-019A