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16 Threads found on Phase Shift Full Bridge
Hello, The phase shift full bridge (PSFB) converter is a hoax. ?The LTspice simulation attached of a ?plain? full bridge SMPS bears this out. PSFB claims to be able to reduce switching losses compared to the ?plain? full bridge SMPS. However the PSFB (...)
full bridge SMPS. (I take it you couldn't find a 250v rated, 90uF capacitor to handle your 27 Amps of ripple current in your previous sepic attempt?...any suggestions here from readers may Help Maloth?) Your duty cycle at worst case is too high for a phase shift full bridge smps, and (...)
(ZVS phase shift full bridge CFD2 optimized design) The above app note, on phase shift full bridge converters, at the bottom of page 18, says?????. ?For safet
Hello, Here are simulations ( in the free LTspice) of a full bridge SMPS, and a phase shift full bridge SMPS. Why is it that the phase shift full bridge smps has a dc bias level in its magnetising current? (you can see (...)
Hello, Why aren?t all full bridge converters implemented as phase shift full bridge converters instead? I mean, control IC?s to manage the phase shift full bridge switching are very commonplace and cheap now. And the (...)
Hello, Compared to doing just a simple, standard full bridge converter, what might be the problems in development of a 850W phase shift full bridge smps?, where.. vin = 18to 32v vout = 34v Iout = 25 amp max I mean, would we need a sectioned bobbin for the transformer?, (so that we (...)
Hi, 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
Hello, 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 (...)
Hi, 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 (...)
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
the mains psu appears to be using a phase shift bridge so there are no switching losses on the mosfets - it appears not to be a parallel resonant converter - rather standard phase shift - Regards Orson Cart.
Thanks to all. I propose to use ZVS phase shift converter. Sorry to say, is it UCC 3895? or UC3875? since I don't know UC3895 is it really difficult to obtain the good result by using 100khz ? Can anyone help me to design the high frequency transformer? any website is good? What is the difference between mosfet and power mosfet? What should
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 (...)
Hi 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. thanks ynhe
two: 1.series resonant half bridge 2.and phase shift full bridge
it is like to full bridge phase shift soft switchmode power supply. Pls ref to this type smps topology.