17 Threads found on edaboard.com: Phase Shift Full Bridge
We need to do a 700W offline converter.
We are decidning between phase shift full bridge and plain full bridge.
It appears that the phase shift version needs no additional hardware and gives zero switch-on switching losses.
So my question (...)
Power Electronics :: 03.02.2012 05:42 :: grizedale :: Replies: 9 :: Views: 1719
I need to know about PWM controller IC with phase shifted full bridge conveter Controller. UC3875.
My application where input variable 24to 45 and output 28V with high current. Does this controller have problem when input have more input that the output? will not work proper? Does it apply for the (...)
Power Electronics :: 20.03.2010 14:09 :: bdmehta :: Replies: 2 :: Views: 2079
1.series resonant half bridge
2.and phase shift full bridge
Analog Circuit Design :: 19.05.2004 00:34 :: alphi :: Replies: 9 :: Views: 2467
Hi... Has anyone has worked on TAB full bridge DC DC converter where power can be transferred from one port to another port by changing the phase shift of the square wave pulse to the switches of the bridge.
I did a simulation but I obtained that power is transferred even when gate pulse sent to all the (...)
Power Electronics :: 18.03.2010 19:34 :: mess123 :: Replies: 0 :: Views: 846
If you are trying to simulate ZVS, your timing is incorrect. You are switching on diagonal MOSFETs M2-M3 simultaneously as in conventional hard switched convertors.
For ZVS, MOSFETs M3-M4 should be phase-shifted with respect to M1-M2. For example, for M3 change to TD=2us, for M4 change to TD=6us, should get you ZVS with phase (...)
Power Electronics :: 04.09.2010 18:47 :: ayjg :: Replies: 1 :: Views: 1588
I need to convert a DC voltage of 120Volts (can be less but not more) to feed the bus of a 3 phase motor controller. I'm by-passing the input rectifier, as I am source power from a battery stack.
I have on hand some step up transformers 1:17 that I was planning on using . I am curious if I should take the time to achi
Power Electronics :: 21.07.2011 15:01 :: Joel-Tang :: Replies: 11 :: Views: 1382
The carrier frequency of the PWM in a class-D amplifier has only one frequency. PWM changes its duty-cycle not its frequency.
Then the signal inversion can be done with a 180 degree phase shift which produces a delay.
Electronic Elementary Questions :: 17.04.2013 19:20 :: Audioguru :: Replies: 12 :: Views: 411
I would like to simulate fullbridge DC DC converter with the following parameters in LT spice with 95% efficiency. Here Iam doing synchronous rectification on the secondary side the delay between SA,SB and SC,SD is 50ns and overlap between M5&M6 is 100ns with dutycycle of 45%. but Iam getting efficiency around 85% (Pi=1887&Po=1608) but Iam ai
Other Design :: 19.06.2013 21:47 :: Romeo shashi :: Replies: 0 :: Views: 1007
it is like to full bridge phase shift soft switchmode power supply.
Pls ref to this type smps topology.
Professional Hardware and Electronics Design :: 17.05.2004 21:09 :: alphi :: Replies: 14 :: Views: 3814
May be phase shifted is simplest than Resonant Converter with sligthy lower efficience compared to the Resonant model, there is a trade off between topology complexity (building, repeatabilities and control) and final overall converter efficiency and size.
If you're searching for more info on the subject take a look at the VPEC (Virginia Power
Professional Hardware and Electronics Design :: 25.09.2008 04:33 :: TekUT :: Replies: 2 :: Views: 1665
In the TI application note - 'Designing a phase shifted ZVT Power Converter' page3-6, it is mentioned that 'During the left leg transition, this situation reverses and the winding initially conducting full current decays to zero. The secondary which initially had zero current will conduct the full output current at (...)
Professional Hardware and Electronics Design :: 07.08.2011 23:45 :: Phase Shift ZVS :: Replies: 0 :: Views: 1327
you could use a differential probe that allows direct, earth free measurement on power lines.
the question is in what you are interested.
Because you mention exessive phase shift you are probably interested in the zero crossing point of the mains voltage. This can be measured with a opto coupler.
If your transformer is very small (<5VA) the
Professional Hardware and Electronics Design :: 24.11.2003 03:00 :: Aoxomox :: Replies: 9 :: Views: 2964
The UCC3895 from TI implements a phase-shift controller for full bridge applications. The model includes various effects such as the adjustable dead-time but also the adaptative control.
But ICAP8.1.6 can not open this model file.Please help to convert this higher version to ver8.1.6.
Electromagnetic Design and Simulation :: 09.06.2004 00:53 :: ynhe :: Replies: 1 :: Views: 3113
1)How to design a high power DC/DC converter for EV accepting 4 quadrant control.
Input: 48 (4 cells) to 96V (8 cells)
Power: 1KW to 4 KW (inital try is 1kW then boost to 4kW)
2)Also, I use Power Mosfet or IGBT is better in my converter?
3)S/W freq is 100kHz is ok?
My proposed design is "phase shifted H-bridge series-resonant (...)
Professional Hardware and Electronics Design :: 22.09.2008 07:46 :: hsklkk :: Replies: 8 :: Views: 2323
That would be a large project. First find some ideas for ZCS or ZVS converters. About your PWM, I think UC3895 is good. Use ther phase shift to obtain ZCS or ZVS design.
Professional Hardware and Electronics Design :: 17.11.2008 01:00 :: stabby21 :: Replies: 12 :: Views: 8684
Hi, I am in HK.
I am going to desgin a transformer for full bridge phase shift DCDC converter.
The input range is 48-96v,out:200V. fs=100khz.
In HK, I can find a good core. The biggest is ETD59 (3c90) from farnell.
Is it enough to make a 1kw?
or i\If i want to make 2kw, which material available in HK is good?
E core: (...)
Professional Hardware and Electronics Design :: 03.12.2008 21:49 :: hsklkk :: Replies: 2 :: Views: 3589
the mains psu appears to be using a phase shift bridge
3525 won't be able to drive it, I think.
@grizedale: As you apparently have the device at your fingertips - why don't you extract the full schematic?
Power Electronics :: 16.07.2011 05:43 :: FvM :: Replies: 15 :: Views: 1106