Samsung S3C2440A User Manual
Page 293
S3C2440A RISC MICROPROCESSOR
PWM TIMER
10-9
DEAD ZONE GENERATOR
The Dead Zone is for the PWM control in a power device. This function enables the insertion of the time gap
between a turn-off of a switching device and a turn on of another switching device. This time gap prohibits the two
switching devices from being turned on simultaneously, even for a very short time.
TOUT0 is the PWM output. nTOUT0 is the inversion of the TOUT0. If the dead zone is enabled, the output wave
form of TOUT0 and nTOUT0 will be TOUT0_DZ and nTOUT0_DZ, respectively. nTOUT0_DZ is routed to the
TOUT1 pin.
In the dead zone interval, TOUT0_DZ and nTOUT0_DZ can never be turned on simultaneously.
TOUT0
nTOUT0
TOUT0_DZ
nTOUT0_DZ
Deadzone
Interval
Figure 10-7. The Wave Form When a Dead Zone Feature is Enabled
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