EN 中文
Vybronics - one of largest suppliers of cylindrical & coin vibration motors

Rectangular LRA linear resonant actuator for haptics

Rectangular Linear Vibration Motors (LRA’s)

Rectangular LRA linear resonant actuator for haptics

Due to their fast rise and fall times linear resonant actuators (LRA) vibration motors are an excellent choice for haptic feedback applications. The Rise and Fall times listed can be greatly improved by using a Haptic Driver IC which will overdrive the LRA upon start up and apply a 180 degree phase shifted wave form to quickly brake the LRA . Their relatively simple internal construction also offers high reliability and exceptionally long life when compared with brushed ERM motors. The fact that, unlike ERM vibration motors, they have no external moving parts facilitate mounting.  It should be noted that none of these types motors is available in a reflow solderable SMD version because they can not survive the high heat of the reflow process.     Vybronics’s rectangular LRA’s have an internal mass that oscillates back and forth along the X-axis at its resonant frequency.  LRA VIDEO   In Hi-Rel applications, they are a viable alternative to brushless vibration motors as the only internal parts that are subjected to wear / failure are the springs.

Scroll To See All Motors


Part Number

Download Icon
Old P/N
(see PCN)
Image

lra motor logo
Motor Size (mm) Voltage (Vac RMS) Current (mA) Response Time
(ms)
- 50% of power
- w/o Haptic Driver
Res. Freq (hz) Vibe Force (Grms)
L W H Rated Operating Rated
MAX
Typical*
Avg.
Rise
Time
Fall
Time
VL120628H L120628H VL120628H LRA linear vibration motor preview image 12.0 6.0 2.8 2.0 1.0 ~ 2.05 130 105 40 60 200 1.80
VL181206-160H
blinking new image
VL181206-160H LRA linear vibration motor preview image 18.0 12.0 6.0 2.0 0.9 ~ 2.2 230 191 50 80 160 2.30
VL32158H-L25
blinking new image
VL32158H-L25 LRA linear vibration motor preview image 32.0 15.0 8.0 2.0 1.5 ~ 2.3 300 270 50 120 100 5.00
VL91022-160-320H L91022-160-320H VL91022-160-320H LRA linear vibration motor preview image 22.6 10.0 9.0 1.5 0 ~ 1.65 180 155 50 60 160 / 320 3.00
VL91022-170H L91022-170H VL91022-170H LRA linear vibration motor preview image 22.6 10.0 9.0 1.5 1.2 ~ 1.8 180 155 50 60 170 2.60
VLV041235L VLV041235L LRA linear vibration motor preview image 12.0 4.0 3.5 1.8 0.1 ~ 1.85 60 47 40 60 240 1.00
VLV101040A LV101040A VLV101040A LRA linear vibration motor preview image 10.0 10.0 4.0 2.5 0.1 ~ 2.5 350 317 10 40 170 2.75
VLV152564W VLV152564W LRA linear vibration motor image coming soon 14.6 24.8 6.4 1.4 1.35 ~ 1.45 150 137 35 10 80 0.93
VLV200634A
blinking new image
VLV200634A LRA linear vibration motor preview image 20.0 6.0 3.43 1.5 0.1 ~ 1.5 215 184 22 60 160 2.40
Part Number Old P/N (see PCN) Image L (mm) W (mm) H (mm) Rated (Vac) Operating (Vac) Rated MAX (mA) Typical* (mA) Rise Time (ms) Fall Time (ms) Res. Freq (hz) Vibe Force (Grms)
VL120628H L120628H VL120628H LRA linear vibration motor preview image 12.0 6.0 2.8 2.0 1.0 ~ 2.05 130 105 40 60 200 1.80
VL181206-160H
blinking new image
VL181206-160H LRA linear vibration motor preview image 18.0 12.0 6.0 2.0 0.9 ~ 2.2 230 191 50 80 160 2.30
VL32158H-L25
blinking new image
VL32158H-L25 LRA linear vibration motor preview image 32.0 15.0 8.0 2.0 1.5 ~ 2.3 300 270 50 120 100 5.00
VL91022-160-320H L91022-160-320H VL91022-160-320H LRA linear vibration motor preview image 22.6 10.0 9.0 1.5 0 ~ 1.65 180 155 50 60 160 / 320 3.00
VL91022-170H L91022-170H VL91022-170H LRA linear vibration motor preview image 22.6 10.0 9.0 1.5 1.2 ~ 1.8 180 155 50 60 170 2.60
VLV041235L VLV041235L LRA linear vibration motor preview image 12.0 4.0 3.5 1.8 0.1 ~ 1.85 60 47 40 60 240 1.00
VLV101040A LV101040A VLV101040A LRA linear vibration motor preview image 10.0 10.0 4.0 2.5 0.1 ~ 2.5 350 317 10 40 170 2.75
VLV152564W VLV152564W LRA linear vibration motor image coming soon 14.6 24.8 6.4 1.4 1.35 ~ 1.45 150 137 35 10 80 0.93
VLV200634A
blinking new image
VLV200634A LRA linear vibration motor preview image 20.0 6.0 3.43 1.5 0.1 ~ 1.5 215 184 22 60 160 2.40

 

NOTES:

  • Custom wire length are available for MOQ: 2K pcs
  • We can add connectors for MOQ: 2K pcs
  • Custom FPC’s are available for MOQ: 5K pcs.
  • Tooling and design fees will apply for custom FPC’s  ( typical cost ~  USD  2000

When compared to standard brushed ERM vibration motors, LRA’s are higher in price and must be used with an external driver IC which are used to produce the AC drive signal required by the LRA.   For optimal performance, the AC drive signal should be a the resonant frequency of the LRA.  Some LRA  drivers have an auto-track feature which will determine the exact resonant frequency of the device it is driving.  Since many LRA’s have a very narrow bandwidth, and the resonant frequency might vary slightly from LRA to LRA, it is important to use this auto-tracking feature to achieve optimal performance.  The LRA driver is connected to a serial port of a micro-controller which is used to configure the IC  driver.  

LRA haptic driver IC’s can also improve the rise and fall times of an LRA by briefly overdriving the LRA on start-up,  and  applying a reverse polarity braking signal when discontinuing the drive signal.   Fast rise and fall times are critical for optimal haptic feedback  performance.  

 A number of companies make Haptic IC drivers that are compatible with our  linear vibration motors.

Renesas (formerly Dialog Semiconductor) makes a full line of Haptic Drivers as well as an  evaluation board that incorporates their popular DA728x Series Haptic driver IC which may be purchased here.    Configuration files are available for our most popular  LRAs.  These files will aid engineers in quickly setting up the DA728x series for optimal performance.   

Texas Instruments makes the DRV26xxx series of Haptic Driver and supplies an evaluation board that incorporates the  TI DRV2605L haptic driver IC.

It should be noted that unlike brushed ERM vibration motors, varying the amplitude of the applied voltage will only change the amplitude of the vibration force, not the frequency of vibration. Due the LRA’s  narrow bandwidth  / Hi-Q , applying a frequency above or below the resonant frequency of the LRA will result in the LRA producing a lower vibration amplitude or if far from the resonant frequency, none at all.

 

Top