Register Configurable Single-phase Motor Driver Evaluation Kit
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4
TYPICAL OPERATION
Overall tuning procedure
1.
setup fan, power supply, pulse generator (for PWM
duty cycle input)
2.
set setting pin voltage with either potentiometer or
resistor pair
3.
Turn-on power supply
4.
Evaluate motor
5.
Repeat from step 2, until appropriate evaluation
result obtained
The configuration is loaded right after power-on from
off. Therefore, power off/on cycle is required every
time the parameters are changed.
Waveform example
Below is the example waveform of LV88561JA with
various Lead Angle Settings.
The EVB condition is;
VIN=48V
2000RPM setting (PWM=100%)
Lead Angle setting (LAG ; 0 deg., LAI ; 0 deg.
Lead Angle setting (LAG ;
+9.975deg.,
LAI ; 0 deg.
Lead Angle setting (LAG ;
-9.975deg.,
LAI ; 0 deg.)
FG
OUT1
OUT2
Icoil
FG
OUT1
OUT2
Icoil
FG
OUT1
OUT2
Icoil