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AM1808
SPRS653E – FEBRUARY 2010 – REVISED MARCH 2014
6.29.2 Enhanced Pulse Width Modulator (eHRPWM) Timing
PWM refers to PWM outputs on eHRPWM1-6.
Table
6-127, switching characteristics.
t
Sync input pulse width
w(SYNCIN)
Table 6-127. Switching Characteristics Over Recommended Operating Conditions for eHRPWM
PARAMETER
t
Pulse duration,
w(PWM)
PWMx output high/low
t
Sync output
w(SYNCOUT)
pulse width
t
Delay time, trip input
d(PWM)TZA
active to PWM forced high
Delay time,
trip input active to PWM
forced low
t
Delay time,
d(TZ-PWM)HZ
trip input active to PWM Hi-Z
234
Peripheral Information and Electrical Specifications
Table 6-126. Timing Requirements for eHRPWM
TEST
CONDITIONS
8t
no pin load; no
additional
programmable
delay
no additional
programmable
delay
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Table 6-126
shows the PWM timing requirements and
TEST
CONDITIONS
Asynchronous
Synchronous
1.3V, 1.2V
1.1V
MIN
MAX
MIN
MAX
20
20
8t
c(SCO)
c(SCO)
25
20
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1.3V, 1.2V, 1.1V, 1.0V
UNIT
MIN
MAX
2t
cycles
c(SCO)
2t
cycles
c(SCO)
1.0V
UNIT
MIN
MAX
26.6
cycles
8t
c(SCO)
25
25
20
20
ns
ns
ns
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