Could you please tell me how to find the maximum output duty cycle of a DCDC buck IC from its technical manual?

dianhang

Could you please tell me how to find the maximum output duty cycle of a DCDC buck IC from its technical manual? [Copy link]

 

Some DCDC chip technical manuals directly state the maximum duty cycle that can be output, while others do not. Where can I find it in the technical documentation?

btty038

Haven't you found them all?

okhxyyo

Isn't it written here that the frequency is 800k? Then we can calculate the cycle time, which is 1/frequency. Then isn't the minimum pulse time given below? The maximum duty cycle should be 1-minimum toff/cycle. Similarly, the minimum duty cycle should be 1-minimum ton/cycle.

okhxyyo

Directly using frequency to calculate is:

Maximum duty cycle = 1-toff*f

Minimum duty cycle = 1-ton*f

well_kim

hey-hey