Hi Kevin,
Thanks for reaching out!
I would assume you plan to have 12-V 24-W isolated output power.
The following reference design boards could help:
PMP22806 (12-V 2.1A Flyback, with TPS23731): www.ti.com/.../PMP22806
PMP8812 (12-V 2.1A Flyback, with…
Hi Namith,
As 28V is not a common output voltage for PoE, it'll be difficult to find an off the shelf PoE transformer. Why not design with a 24V output to OR with your DC adapter at the secondary since it's within the adapter range?
Please see…
Hi Jordan,
HPA244EVM uses TPS2376 but with 5V/5A output. ( https://www.ti.com/tool/TPS2376HEVM )
You may consider to change the secondary side (including the transformer) to a 12-V case (e.g. www.ti.com/tool/PMP11254) . If you want sync FET you may consider…
Hello Michael,
No the transformer is not the only component that sets the input voltage range.
Since you want a 12V/2.1A with a 24V input adapter design, please consider the PMP8812. It is exactly what you want.
http://www.ti.com/tool/PMP8812
If this…
Hi Dylan,
1. VC UVLO is the voltage in which the internal startup regulator finishes charging the bias winding cap and PWM switching starts. Then the bias winding will ramp up to 12V and power the VC pin. Figure 24 of the datasheet describes this startup…
Part Number: TPS23754 Other Parts Discussed in Thread: PMP11254 , PMP8812 Dear E2E,
Could you help to share the efficiency data between sync and non-sync in Flyback topology?
BR,
Jason
Part Number: TPS23754 Other Parts Discussed in Thread: PMP11254 , PMP8812 , PMP6812 Hi,
We have new project to use TPS23754 ,
We follow slvrb41b.pdf suggestion schematic of TI , but change secondary rectifier diode to NMOS.
Please help to check our schematic…
Part Number: TPS23751 Other Parts Discussed in Thread: PMP8812 , PMP11254 , TPS23754
According to PMP11254, the Rcs is 0.082Ohm(Package1206, R30), and we found it 0.09Ohm(Package2010, R34) in PMP8812.
I could not find an accurate method to determine the…
Hi Seishin,
Unfortunately, we do not have a 24V/1.25A reference design with a flyback topology, but we do have something close:
PMP8812 - TPS23752, flyback with 12V/2.1A output
COPY of PMP8812_RevA_BOM.pdf
PMP8812_RevA_SCH.pdf
Since this is a different…