Other Parts Discussed in Thread: PMP10974 , UCC28730
This is the top side artwork view of pmp10974.
Is the node 3 of transformer connected to the HV pin(8) of UCC28730?
Why different from the schematic, no problem?
Help me, please. Thank you.…
Other Parts Discussed in Thread: PMP10974 , BQ24040 , UCC24630EVM-636 , PMP10478 , PMP11124 , PMP4478 , UCC24636 I need the design details of the main switching transformer used in the reference design PMP10974. The design says only a value (260 uH).…
Hi Steven, you're analysis is correct. The leakage current in the transformer primary causes node 1 of the transformer to ring down until it is clamped at Gnd-Vd by D904, and node 3 of the transformer to ring up until it is clamped at Vbulk + Vd by D900…
Hi,
The difference between PMP10974 and PMP11281 is that PMP10974 uses 2-sw Flyback while PMP11281 uses 1-sw Flyback. Therefore, PMP10974 has about 1% higher efficiency than PMP11281. So PMP10974 supposes to have high life time than PMP11281 because…
Hi Mayur,
Here are some simulation resources for the UCC2897A: https://www.ti.com/product/UCC2897A#design-tools-simulation
You may want to also consider a two-switch flyback. Here is a two-switch flyback reference design that is very close to your…
Lanhua
I assume that this is for universal AC input (90-264 V)?
There are several reference designs on the UCC24630 product page, click on the "tools & software" tab.
www.ti.com/.../toolssoftware
There are some 5-V high output current designs…
