Skip to main content
Electrical Engineering

Questions tagged [dcm-ccm]

Ask Question

The tag has no summary.

22 questions
Newest Active Bountied Unanswered
Filter by
Sorted by
Tagged with
4 votes
2 answers
333 views

I would like to design a multi-output flyback converter operating in DCM. The problem is that unlike in CCM, in DCM the output voltage also depends on the output current. Therefore, if the feedback is ...
slimcolt's user avatar
  • 1,213
0 votes
1 answer
169 views

Link to datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/lt3748.pdf Page 8 of the datasheet explains how the control works and what I understand is (and observe from ...
needbrainscratched's user avatar
  • 959
0 votes
1 answer
97 views

I'm trying to replicate the simulation for Fig. 15.26 (SEPIC example) shown below using the provided combined CCM-DCM averaged switch model (CCM-DCM1 subcircuit) in LTspice, as shown below, from ...
MICHAEL MURITHI's user avatar
  • 379
1 vote
1 answer
63 views

While studying section 15.2, DCM Averaged Switch Model, of Fundamentals of Power Electronics, by Dragan Maksimović and Erickson, I came across where he says: Steady-state conditions in the converters ...
MICHAEL MURITHI's user avatar
  • 379
0 votes
1 answer
68 views

While studying DCM Averaged Switch Models from the Fundamentals of Power Electronics Book by Robert W. Erickson, I came across this Figure that represents the buck converter operating in DCM mode ...
MICHAEL MURITHI's user avatar
  • 379
0 votes
0 answers
55 views

I am designing a DCM flyback converter with an input voltage range of 20 V to 120 V, an output voltage of 15 V, and an output current of 1 A. I have completed all the necessary calculations based on ...
Ali Rasim Kuş's user avatar
  • 11
1 vote
1 answer
97 views

I need help understanding where does the ringing come from when the inductor current reaches zero. I understand how a resonant LC tank works, but I can't see how the current flows in a buck converter ...
Albert's user avatar
  • 59
2 votes
1 answer
95 views

I am designing a DC-to-DC buck converter that will operate across a wide range of load currents. At full load, the converter should supply up to 10-20 A, while at lighter loads, the current could drop ...
Tyo Hoy's user avatar
  • 331
1 vote
1 answer
130 views

I am designing a Voltage-Fed Push-Pull converter, and I would like to determine the system's transfer function in both CCM and DCM modes. The control will be in Peak Current Mode. I am reading through ...
slimcolt's user avatar
  • 1,213
0 votes
0 answers
62 views

I am trying to design a buck converter. And I was wondering what frequency I should be working on? I made a research and they saying in high voltages you should work with under 500kHz. But I couldn't ...
Knoples's user avatar
  • 21
1 vote
1 answer
96 views

I already know that the value of the inductor for a DCM mode should be any which is smaller than the value required for critical conduction but out of the range. How could I decide which value would ...
Sandeep Kumar's user avatar
  • 11
3 votes
1 answer
351 views

I am still a beginner in this field so I would like to gain some insight about boost converters. I wanted to build a boost converter for a school project with this simple design. The parts were ...
Ian's user avatar
  • 33
0 votes
0 answers
402 views

I've noticed that while designing DC/DC converters, some sources (at the bottom of the website, comment of Benjamin Lough) suggest a "rule of thumb" duty cycle of 70%, while others (This is ...
Nafi Can Ereli's user avatar
  • 123
7 votes
3 answers
737 views

I'm trying to train up on isolated power converters and magnetics. I am going through a webinar series created by Electronic Minds out of the UK called Powerful Knowledge. It's on YouTube if you'd ...
Michael Beckwith's user avatar
  • 95
0 votes
0 answers
71 views

I'm simulating a CCM flyback converter on ltspice, and I need some help in understanding the results when I decreased the coupling factor from 1 to 0.96. When K=1, the voltage appearing across the ...
Hamza Harbi's user avatar
  • 1
9 votes
6 answers
3k views

I know that DCM occurs when ripple is greater than the DC component, but why would we allow ripple to be greater than the DC component? Don't we see ripple as something undesirable and try to minimise ...
Urthona26's user avatar
  • 363
3 votes
1 answer
329 views

I'm designing a boost DC/DC converter for a backlight (it needs to be constant current but it's not relevant to the question). Starting from a 5V preregulated rail I need to go to about 25V 30mA; ...
Lorenzo Marcantonio's user avatar
  • 9,036
0 votes
0 answers
105 views

I built a boost converter to boost voltage from 200V dc to 400V dc. Power rating is 5kw, I added a PID to regulate the voltage. The problem is, when going from light load to heavy load, output voltage ...
Damith Pavithra's user avatar
  • 49
2 votes
1 answer
767 views

I'm developing a boost converter (runs with DCM, and has \$n\$ turns ratio transformer) for uni which controls the input voltage with a constant output voltage. I'm at loss on how to get the transfer ...
Grigoris's user avatar
  • 49
0 votes
0 answers
93 views

To turn on N-MOSFET (high side) what should be the gate voltage (Vgs) in buck converter before turn on and after turn-on of MOSFET. Case 1 (As per my understanding): To turn on the MOSFET the gate ...
DATTU SAMPATH KUMAR P's user avatar
  • 21
1 vote
0 answers
491 views

I've been refreshing my power electronics knowledge these days. During my re-visit to the LLC converters, I've come across this application note. It also explains the behaviour of an LLC converter at ...
Rohat Kılıç's user avatar
  • 39.2k
9 votes
2 answers
403 views

I'm trying to design a SMPS power supply with potentially widely varying loads, from say a watt or two to ~150W, and I want to include Active PFC because of the medium power load, as well as to use ...
helloworld922's user avatar
  • 17.2k