App note from Precision Microdrives on how to design drivers for vibration motors on battery powered mobile devices. Link here
The mobile phone industry is a huge market in which vibration motors are an established component. Now almost every device has the ability to produce vibration alerts and the field of haptic feedback is rapidly moving forward. In this bulletin we outline some of the common problems cell phone manufacturers face and the electrical best practices to overcome them.
Many of these problems and solutions are applicable to the majority of handheld devices which feature vibration functionality. For those looking to improve an existing product or add a vibration motor to a brand new creation, you may find here, some solutions to problems you have not yet considered, minimise their effects and increase performance.