PWM signal with N2HET

Tim Kirchhofer

Other Parts Discussed in Thread: HALCOGEN

Hi,

i have a question about the N2HET PWM signal. I have created a signal with HalCoGen 4.05.02 with a Duty of 2% and a period of 100 us.
The pwm works perfect on the pin for a time of about 18ms. After that time the signal disables itselfs for about 600ms and starts again.

I found out, that the loop time in HET Global Timing Configuration can extend my pwm time. But is there a possiblity to have a constant pwm signal with the N2HET?

over 9 years ago

0 Anthony F. Seely over 9 years ago

TI__Guru 68920 points

I don't know what is causing the results you report - but the HET can produce a continuous PWM output without a doubt.

I don't think there is anything in the program that limits to 18ms / 600ms that sounds very odd. I think something else is going on in that test.

This app report explains the code that implements the HalCoGen N2HET based PWMs www.ti.com/.../getliterature.tsp

0 Tim Kirchhofer over 9 years ago in reply to Anthony F. Seely

Prodigy 160 points

I have checked it and it looks like my oscilloscope can not regive the signal constantly, but a duty of 100% can be displayed correctly.

Arm-based microcontrollers

Arm-based microcontrollers forum

PWM signal with N2HET