Disable switching regulator during spin-up (or spin-up with sleep state)
Publication Date: 2014-Jun-24
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.