Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Using UCC3808X to get ~25% duty pulse train at 120kHz?

Status
Not open for further replies.

cupoftea

Advanced Member level 5
Joined
Jun 13, 2021
Messages
2,576
Helped
54
Reputation
108
Reaction score
115
Trophy points
63
Activity points
13,530
Hello,
Is it possible to use the UCC38086 to produce an approx. 25% duty cycle pulse train at 120kHz?
(eg by using the inbuilt slope compensation thing)

This (attached) sync circuit needs that….the CD74HC123 shortens the pulses to 400ns.
Sync pulses go into RDM pin of UCC28070A
 

Attachments

  • 400ns pulse train at 120khz.pdf
    207.6 KB · Views: 106

Thanks, yes youre right, i intend for the '123 to set the pulse width.
But i want to avoid the UCC38086 going to nearly 50% duty at each output......as i think problems could ensue in this cct if it does.....so i picked 25% duty...though is that poss by just using the slope comp feature?
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top