A COMPARISON OF VIBRATION MOTOR TECHNOLOGY
Traditional DC Brush Type – Vibration Motors
Pros:
– Low cost
– No driver IC required
– DC drive signal
Cons:
– Motor life not suitable for some applications
– Not best choice for haptic feedback applications due to slow rise / fall times
Linear Vibration Motor – Coin Type
Pros:
– No Brush / Friction or Shaft for better reliability and long life time
LRA ~ 1,000,000 cycles
Brush Type ~ 100,000 cycles
( 2 Sec ON / 1 Sec OFF )
– Fast rise / fall times for Haptics
– May be driven at very low voltage / current levels to optimize power consumption
Cons:
– Higher cost than brush type coin vibration motors
– Haptic Driver IC required