Part Number: TPS2372 Other Parts Discussed in Thread: TPS54339 , BQ24773 , , PMP11254 , TPS23751 Hi,
I have a new project which needs to be feed by POE(24W). I need three internal voltages 12V6(battery charge), 3V8 and 3V3. I'm looking at TPS2372, bq24773…
Hi Cheng,
Yes, you could use to create inverting voltage. But need to remember that, in this application, the GND pin of TPS54339 is connected to FB-5V, which means that all the other pin is reference to FB-5V as GND. In this case, SS cap, VREG5 cap…
Hi Shawn,
We tried with 4.7uF and added capacitors to the dev board to cover the 66 and 88uF as you suggest. As expected the larger capacitance did reduce the ripple a bit but we still have this issue where the IC cannot decide if it should be pulse…
HI Pradeep,
1. For TPS54302, it is current mode device. The load transient is not as good as TPS563208 which is DCAP2. And TPS54302 is not easy to use for Vout lower than 1.2V. It request big output cap to support low Vout.
2. I also know some other…
For option 1, the easy answer is to use TPS54360. It can operate up to 60 V input. For TPS54325, the abs max input voltage is 20 V. There is some margin above that, but it is not guaranteed. TPS54335 is a synchronous solution for 28 V input maximum. TPS54339…
Hi Fred,
Your calculation is right, the cap will add a zero, and a pole at much higher frequencies.
The frequency of the zero can be derived from (Rtop * C) , and the frequency of the Pole is driven from ((Rtop || Rbottom) * C)
If you want to understand…
Part Number: TPS54325 Hi,
Recently, I have read an application report, named "D-CAP2TM Frequency Response Model based on frequency domain analysis of Fixed On-Time with Bottom Detection having Ripple Injection"(SLVA546). In this report, it writes "The…
