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Check out the DRV8312-69M-Kit.
The DRV8332 Driver / Protection IC will support sub50V up to 8A, where the DRV8312 is 3.5A
For more on TI's InstaSPIN technology, check out this link.
You will find that for higher power motors discrete component designs always work out cheaper. Be careful of the "integrated solution" maximum current ratings - motor startup, peak, and stall currents can be much higher.
As we unveil EE Times’ 2015 Silicon 60 list, journalist & Silicon 60 researcher Peter Clarke hosts a conversation on startups in the electronics industry. Panelists Dan Armbrust (investment firm Silicon Catalyst), Andrew Kau (venture capital firm Walden International), and Stan Boland (successful serial entrepreneur, former CEO of Neul, Icera) join in the live debate.