Other Parts Discussed in Thread: PMP10215 , LM5021 , LM5039 , PMP10110 , UCC28951 , PMP7391 , UCC2894 Hello,
any topology reccomendation?
DCin = 390V
variable output voltage 0-50V
i was thinking about active flyback.
It should be ZVS / ZCS. For best efficiency…
Hi,
If the input voltage is 300VDC, then you cannot use the IC VIN pin for start up but you can use external circuit to make startup. So the IC can still be used but P-channel MOSFET cost can be a concern. If P-channel MOSFET cost is a concern, then you…
Part Number: LM5023 Other Parts Discussed in Thread: UCC28600 , UCC28C43 , UCC2894 Does LM5023 have any derived part for use? The maxium frequency for LM5023 is 130KHZ, which constraints power supply's size.I like QR mode,but i wish the frequency is up…
Hi Diego,
I apologize for the delay, I think the calculation for UCC3806 bias capacitor is no difference with the calculation in UCC2894 datasheet. You can use these equations (13)~(16) to calculate a minimum bias capacitance for UCC3806, just guarantee…
My question : Beside the inverting of the AUX-Signal, is there any difference between an N-FET Controller (e.g. UCC2894) and an P-FET Controller (e.g. UCC2892) ? No, there is not other differnece between UCC2894 and UCC2894 except the AUX driving signal…
Other Parts Discussed in Thread: UCC2894 Hello,
I read an article about active clamp converters. In the references they mentioned the TI Application Note No. SLUA303 by Steve Mappus titled “Designing for High Efficiency with the UCC289/1/2/3/4…
Other Parts Discussed in Thread: UCC28C42 , TINA-TI , UCC2894 Is their a circuit model (schematic) available to open in Tina-TI available? There examples don't include much in the way of power circuit except the UCC28C42. If there is a specific location…
Mahesh, Billy,
Maybe I can add more info here to help.
The datasheet for UC1525B says that it's not recommended for new designs, in big red letters across the top of every page - so really, it's best avoided.
The UC1525B is a very old bipolar…
Hi Hong Huang
Thanks for your comments.
Once more, if UCC2894 is adopted and traditional diode recitification is used, what about the control loop stability when the load is light enough that diode enters into discontinuous mode? Especially the…