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Disable switching regulator during spin-up (or spin-up with sleep state)

IP.com Disclosure Number: IPCOM000237555D
Publication Date: 2014-Jun-24

Publishing Venue

The IP.com Prior Art Database


Disclosed is a system that enables spinning up of the HDD motor without intervention from SoC, resulting in reduction of spin-up time and reduction of peak power current. Spin up time reduction and of peak supply current mitigation are the trade off. By disabling switching regulator including all R/W channel and Interface, almost 100% supply current can be consumed for spindle motor.