how to get 50 % duty cycle with complementry pulse

Show the functions initializing the timer.

Is the frequency as expected?

ARR = N - 1

CCR1 = N / 2

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F​rom the scope screen it's hard to see the cycles, or if they are complementary.

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Show all registers in TIM1

YES ,Frequency is same as expected

ARR = N - 1

CCR1 = N / 2

for this parameter

ARR = 150-1

CCR1 = 150/ 2

i am using the stm32 g0b1re Microcontroller Board

if i will use the same parametere at 1KHz frequency then i will got the 50% duty cycle.

time clock -64Mhz

prescale-64-1.

so i will get frequency 64/64= 1 Mhz.

and using ARR value = 100

frequency =1M/100= 10 KHz

CRR=50

duty cycle= (50*100)/100= 50 % duty

but when

prescale-1.

and using ARR value = 100

frequency = 317KHz

CRR=50

duty cycle= 25 % duty

using crr =50 and arr 100 why not duty cycle become 50n%?

what i m doing wrong ?

not wrong, but maybe there is some deadtime active.

timer -> complementary outputs = usually need deadtime .

try setting it very short.

+ set timerclk 64M , no prescaler.

for 10khz out -> arr 6400 , 300khz out -> 210 .

i am using frequency (211Khz to 103Khz ) for inverter mosfet (STF24N60M2) FOR 1.2kw eV Chareger. in this project my duty cycle not maintain at 50% because i am using deadband .i want to maintain duty cycle same as it is for 211KHz same for 103Khz ,what minimum value of deadband i can putt ?,so that duty cycel will same and do not get short MOsfet ( deadband mandatory for mosfet EV circuit )