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TMS320F280039C: epwm_ex2_updown_aq例程中产生的PWM波最高频率不能到达20mhz?

Part Number: TMS320F280039C
Other Parts Discussed in Thread: LAUNCHXL-F280039C

ccs:12.5

硬件平台:Launchxl-F280039c demo板

目的:产生频率达到20mhz不失真pwm波形

实验过程:项目中需要用到20mhzpwm不失真波形,发现项目中无法实现,所以用官方demo和官方例程(epwm_ex2_updown_aq)尝试,发现也是无法实现,查看数据手册上支持这个频率的

数据手册中书写(理论计算应该是25mhz正常输出才对呀):

官方例程修改点按照60mhz主频+10mhz pwm配置如下:

实际10mhz波形输出示波器采集:

如果看到请尽快回复,项目比较紧急!!!