Part Number: BQ24703EVM In my board we use BQ24703 (charger) and TPS54339 (DC2DC, Vout=5v, Vin = 12-19.5v).
Vac_adapter = 19.5v
Vbat = 12-16.8v
Vcharge = 16.8v
In the steady state we see clean 5v from TPS54339 Vout, but when we plug in Vac_adapter …
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 skipping…
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…
Other Parts Discussed in Thread: TPS54340 , TPS54325 , TPS54360 , TPS54339 Hello,
Customer will use TPS54340, TPS54325 and each device may have a chance to be applied following voltage (exceeding ABSOLUT MUXIMUM INPUT VOLTGAE).
TPS54340: 52.8V
TPS54325…