HI
We make use the TPS63031 chip for our low power sensor. Unfortunately, the device is not configured with light load with PS/SYNC = GND.
1) The input power is 5.5mA@4V, while output is not connected to any load or only supplying quiescent current to ICs downstream.
2) When the device is shutdown, input is at 0mA@4V.
Is this normal that this device consumes so much power or the efficiency is so low at light load, when PS/SYNC is shorted to VINA?
Note that the EN is pull up to VIN with 1M, which is different from the reference design. Reference design tied, VINA, EN, and PS together. Is our way of connection acceptable?
Looks forward to kind soul to point to the right direction.
