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Part Number: BQ25505
I'm trying to implement the circuit shown in the datasheet.
As can be seen two load switches are connected to the VSTOR and VBAT_PRI to switch between the backup and rechargeable storage. Is there any recommended load switch that I could use for this application? It definitely needs to switch between the two extremely fast and the maximum voltage is at 5V.
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Texas Instruments Inc
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In reply to Aleksandras_Kaknevicius:
TPS2113A was exactly what I was looking for. Thanks!
I ended up using the TPS2115A power muxes which works as expected. However, based on the datasheet, the supply and leakage currents are relatively high compared to the harvested power. I can see that the voltage increment on the rechargeable source (VBAT_SEC pin) decreases when I connect this pin to the mux IN2 pin (when IN2 is in inactive mode). My goal is to reduce the mux leakage current as much as I can. Do you have any solution for this?
In reply to Vahid Montazeri63:
Are you referring to the operating current or the standby current for the device? Either way, we do not have any tricks for reducing these currents since the device needs these for proper operation and protection features.
I used the following circuit rather than a multiplexer and the leakage is much lower:
The "microcontroller" is basically the BQ25505 IC that has two outputs (pins 9 and 10) to switch between the primary and secondary sources.
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