I found something rather curious this morning. If I connect just the solar panel to the board and measure Vstor it is at the correct ~4.2V voltage but once I connect a battery to Vbat_sec the voltage drops to the same level as the battery. So with no…
For the TPS63020 to SYNC, the frequency would have to be in the MHz range. Even if this happens due to a bounce, the converter will return to the free-running frequency if a SYNC signal is not received within several switch cycles.
Generally, we recommend you follow the design procedure in the datasheet and your schematic and layout match that of the EVM.
See my comments below:
Shlomi Yehezkia said:
Q1: Can the PS/SYNC pin (power safe mode) be active for good?
[D.A.] PS/SYNC is…
Hi Poh Leong,
what you are asking is related to physics. When you operate from a voltage below you desired output voltage, than the converter operates in boost mode. Basically the current drive capability is related to the switch current inside the chip…
