May 28, 2024 #1 J Joel601 Newbie Joined May 28, 2024 Messages 4 Helped 0 Reputation 0 Reaction score 0 Trophy points 1 Activity points 24 Half bridge output of LLC Resonant converter is coming like this. Why rise time is this much high? . Gate resistor used is 10 ohm and fod3180 is used.Switching frequency is 100 KHz. Actually unit should be in volts instead of amps.
Half bridge output of LLC Resonant converter is coming like this. Why rise time is this much high? . Gate resistor used is 10 ohm and fod3180 is used.Switching frequency is 100 KHz. Actually unit should be in volts instead of amps.
May 28, 2024 #2 D.A.(Tony)Stewart Advanced Member level 7 Joined Sep 26, 2007 Messages 9,696 Helped 1,850 Reputation 3,701 Reaction score 2,379 Trophy points 1,413 Location Richmond Hill, ON, Canada Activity points 62,471 It seems you are asking about the risetime output of 50 Hz without any schematic, layout or design assumptions on how 100 kHz is used. Also please explain why you are exceeding the device BW spec. Your query ought to contain all the data to analyze properly. Ref Upvote 0 Downvote
It seems you are asking about the risetime output of 50 Hz without any schematic, layout or design assumptions on how 100 kHz is used. Also please explain why you are exceeding the device BW spec. Your query ought to contain all the data to analyze properly. Ref
May 29, 2024 #3 E Easy peasy Advanced Member level 6 Joined Aug 15, 2015 Messages 5,017 Helped 1,412 Reputation 2,824 Reaction score 2,064 Trophy points 1,393 Location Melbourne Activity points 27,511 your time base is 5mS/div and you are looking at output voltage ( at what volts / div ?) ? into some sort of load ? - undefined by you, a lot more information needed - including the power source you are running your converter from and the feedback loop you have come up with - and the nature of the load. Upvote 0 Downvote
your time base is 5mS/div and you are looking at output voltage ( at what volts / div ?) ? into some sort of load ? - undefined by you, a lot more information needed - including the power source you are running your converter from and the feedback loop you have come up with - and the nature of the load.
May 29, 2024 #4 J Joel601 Newbie Joined May 28, 2024 Messages 4 Helped 0 Reputation 0 Reaction score 0 Trophy points 1 Activity points 24 Easy peasy said: your time base is 5mS/div and you are looking at output voltage ( at what volts / div ?) ? into some sort of load ? - undefined by you, a lot more information needed - including the power source you are running your converter from and the feedback loop you have come up with - and the nature of the load. Click to expand... Actually it is output voltage. Load is not connected and the power source is dc source of 0-32 V. No feedback loop. Upvote 0 Downvote
Easy peasy said: your time base is 5mS/div and you are looking at output voltage ( at what volts / div ?) ? into some sort of load ? - undefined by you, a lot more information needed - including the power source you are running your converter from and the feedback loop you have come up with - and the nature of the load. Click to expand... Actually it is output voltage. Load is not connected and the power source is dc source of 0-32 V. No feedback loop.
May 29, 2024 #5 J Joel601 Newbie Joined May 28, 2024 Messages 4 Helped 0 Reputation 0 Reaction score 0 Trophy points 1 Activity points 24 D.A.(Tony)Stewart said: It seems you are asking about the risetime output of 50 Hz without any schematic, layout or design assumptions on how 100 kHz is used. Also please explain why you are exceeding the device BW spec. Your query ought to contain all the data to analyze properly. View attachment 191124 Ref Click to expand... My doubt is whether parasitic inductance cause this much problem because iam using proto board and not pcb. If so then what can I do to mitigate it? Upvote 0 Downvote
D.A.(Tony)Stewart said: It seems you are asking about the risetime output of 50 Hz without any schematic, layout or design assumptions on how 100 kHz is used. Also please explain why you are exceeding the device BW spec. Your query ought to contain all the data to analyze properly. View attachment 191124 Ref Click to expand... My doubt is whether parasitic inductance cause this much problem because iam using proto board and not pcb. If so then what can I do to mitigate it?
May 29, 2024 #6 D.A.(Tony)Stewart Advanced Member level 7 Joined Sep 26, 2007 Messages 9,696 Helped 1,850 Reputation 3,701 Reaction score 2,379 Trophy points 1,413 Location Richmond Hill, ON, Canada Activity points 62,471 It would seem to be an AC inverter expecting a square output limited by risetime and the question is why. What do RC and L/DCR equal? Upvote 0 Downvote
It would seem to be an AC inverter expecting a square output limited by risetime and the question is why. What do RC and L/DCR equal?
May 29, 2024 #7 FvM Super Moderator Staff member Joined Jan 22, 2008 Messages 52,961 Helped 14,780 Reputation 29,845 Reaction score 14,249 Trophy points 1,393 Location Bochum, Germany Activity points 300,439 As a starting point, you may want to show the circuit topology. Upvote 1 Downvote
May 29, 2024 #8 J Joel601 Newbie Joined May 28, 2024 Messages 4 Helped 0 Reputation 0 Reaction score 0 Trophy points 1 Activity points 24 D.A.(Tony)Stewart said: It would seem to be an AC inverter expecting a square output limited by risetime and the question is why. What do RC and L/DCR equal? Click to expand... Can I measure Inductance with LCR Meter? Upvote 0 Downvote
D.A.(Tony)Stewart said: It would seem to be an AC inverter expecting a square output limited by risetime and the question is why. What do RC and L/DCR equal? Click to expand... Can I measure Inductance with LCR Meter?
May 29, 2024 #9 E Easy peasy Advanced Member level 6 Joined Aug 15, 2015 Messages 5,017 Helped 1,412 Reputation 2,824 Reaction score 2,064 Trophy points 1,393 Location Melbourne Activity points 27,511 are you sure it is not the source power supply playing up ? possibly from the RFI coming from your converter ? look at the Vin on a scope. Upvote 0 Downvote
are you sure it is not the source power supply playing up ? possibly from the RFI coming from your converter ? look at the Vin on a scope.