Texas Instruments F28M36 Concerto Control Card TMDSCNCD28M36 TMDSCNCD28M36 데이터 시트
제품 코드
TMDSCNCD28M36
SPRS825C – OCTOBER 2012 – REVISED FEBRUARY 2014
7.3.1.1
HRPWM Electrical Data and Timing
shows the high-resolution PWM switching characteristics.
Table 7-31. High-Resolution PWM Characteristics at SYSCLKOUT = (60–150 MHz)
PARAMETER
MIN
TYP
MAX
UNIT
Micro Edge Positioning (MEP) step size
(1)
150
310
ps
(1)
Maximum MEP step size is based on worst-case process, maximum temperature and minimum voltage. MEP step size will increase
with low voltage and high temperature and decrease with voltage and cold temperature.
Applications that use the HRPWM feature should use MEP Scale Factor Optimizer (SFO) estimation software functions. See the TI
software libraries for details of using SFO function in end applications. SFO functions help to estimate the number of MEP steps per
SYSCLKOUT period dynamically while the HRPWM is in operation.
with low voltage and high temperature and decrease with voltage and cold temperature.
Applications that use the HRPWM feature should use MEP Scale Factor Optimizer (SFO) estimation software functions. See the TI
software libraries for details of using SFO function in end applications. SFO functions help to estimate the number of MEP steps per
SYSCLKOUT period dynamically while the HRPWM is in operation.
7.3.1.2
ePWM Electrical Data and Timing
shows the PWM timing requirements and
shows the PWM switching
characteristics.
Table 7-32. ePWM Timing Requirements
(1)
MIN
MAX
UNIT
t
w(SYCIN)
Sync input pulse width
Asynchronous
2t
c(SCO)
cycles
Synchronous
2t
c(SCO)
cycles
With input qualifier
1t
c(SCO)
+ t
w(IQSW)
cycles
(1)
For an explanation of the input qualifier parameters, see
Table 7-33. ePWM Switching Characteristics
over recommended operating conditions (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
MAX
UNIT
t
w(PWM)
Pulse duration, PWMx output high/low
20
ns
t
w(SYNCOUT)
Sync output pulse width
8t
c(SCO)
cycles
t
d(PWM)tza
Delay time, trip input active to PWM forced high
no pin load
25
ns
Delay time, trip input active to PWM forced low
t
d(TZ-PWM)HZ
Delay time, trip input active to PWM Hi-Z
20
ns
214
Peripheral Information and Timings
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