Panasonic MN103S - Page 334

Chapter 10
Motor Control PWM
X - 26 Operation
■ Inserting Dead Time at H/L Level Output
Dead Time is inserted as delay time when signals are switched. Therefore, dead time is inserted even when PWM
output is switched over to H/L level output. The timing of dead time insertion is shown below.
Figure:10.3.6 Dead Time Insertion Timing at H/L Level Output
ORMDn = 0
ORMDn = 1
PWM basic
waveform
PWM basic
waveform
H/L level output
PWMxx
PSELxx = 1
NPSELxx = 1
OTLVxx = 0
OTLVNxx = 1
H/L level output
PSELxx = 1
NPSELxx = 1
OTLVxx = 1
OTLVNxx = 0
H/L level output
PSELxx = 1
NPSELxx = 1
OTLVxx = 0
OTLVNxx = 1
H/L level output
PSELxx = 1
NPSELxx = 1
OTLVxx = 1
OTLVNxx = 0
NPWMxx
Output switching
Output switching
PWMxx
NPWMxx
H/L level output
from here
H/L level output
from here