Other Parts Discussed in Thread: UCC28250 , TPS2812 , UCC28250EVM-501 My customer is using UCC28250 to design a half-bridge synchronous 150W power. lsolated transformer and driver IC TPS2812 are used for driving secondary synchronous Mosfet IRFB4310. An input…
Hi David,
Thanks for connecting through E2E. Here is one PMP8878 reference design I found that uses UCC28250 in a DC/DC telecom module. UCC28250 is the predecessor to UCC28251. They are functionally the same and the differences are explained in SLUA6…
Hi Kevin! Thanks for getting in touch! Generally we recommend either the LM5045 or the UCC28250 for hard-switching full bridge converters. The LM5045 device is better suited for primary side controlled applications while the UCC28250 / UCC28251 are better…
Hello,
From the schematic it looks like the customer is running the design open loop.
The amplifier output is a low impendence and should not be noise sensitive. The input is not low impedance and could be noise senseative.
They could add low pass RC…
Hello,
The UCC28950 uses phase shifted full bridge to control the duty cycle. It can be designed for 3 kW and has zero voltage switching.
If you don't want to use phase shift control you could consider using the UCC28250. This device was designed…
Hi Richard,
There is no pin to pin CMOS equivalent but the UCC28250 and UCC28251 are CMOS push-pull controller with SR drive signals. There is also the UCC2808A and LM25037 as alternative push-pull controllers.
Regards
Peter
Hi Sonal,
Thank you for your reply..
Customer prefer a simpler debug scheme rather than LLC, so they are going to use one half bridge for each 200W output channel.
I think this scheme is OK, right? And is there any reference design on your side of LM5036…
Hi Valentin,
The LM5105, www.ti.com/.../samplebuy bridge&tisearch=Search-EN-Everything, is a half bridge driver with programmable dead-time but they are symmetrical.
Our latest half bridge controller is the LM5036 again I don't think it has the different…
Hello Max,
Regarding for the Pre-bias implementation, UCC28251 is same as UCC28250 so you can use the application paper under below link as a reference.
www.ti.com/.../slaa477.pdf
Best Regards
Frank
From datasheet: "If the designer wants to disable UCC28250 with a level signal during an over current condition, the recommended solution is to pull down the SS pin rather than the EN pin." I saw start without softstart after stopped IC while…
