IRMCF188_15 Datasheet, PDF (21/38 Pages) International Rectifier – High Performance Sensorless Motor Control IC

IRMCF188
6.4 SYNC to SVPWM and A/D Conversion AC Timing
SYNC
IU,IV,IW
AINx
PWMUx,PWMVx,PWMWx
t_wSYNC
t_dSYNC1
t_dSYNC2
t_dSYNC3
Figure 9. SYNC timing
Unless specified, Ta = 25˚C.
Symbol
Parameter
Min
Typ
Max
t_wSYNC
SYNC pulse width
-
t_dSYNC1
SYNC to current feedback
-
conversion time
32
-
-
100
t_dSYNC2
SYNC to AIN0-4, ADCH,
-
ADCL analog input
-
200
conversion time
t_dSYNC3
SYNC to PWM output delay
-
-
2
time
Table 12. SYNC AC Characteristics
Note:
(1) AIN2 – AIN4, ADCH, ADCL channels are converted once every 5 SYNC events
Unit
SYSCLK
SYSCLK
SYSCLK
(1)
SYSCLK
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May 28, 2014