Hello,
We have special batteries which are pretty much always 400V +/-5V no matter what the state of charge.
We want to charge them with a non isolated “controlled open loop” BCM Boost PFC converter as attached. (we’ll be careful). PDF schem and LTspice sim as attached.
This involves setting up the internal transconductance error amplifier in an LT3799 (Boost BCM PFC) IC as a simple buffer as shown. Then one simply adjusts the charge current by adjusting the voltage into the CTRL3 pin of the LT3799 controller as shown. (“iterative set and check algorithm”)
Can you see any problems with this? That is, the connection of the internal transconductance opamp as a "voltage follower" as shown.
Datasheet: LT3799 BCM Boost PFC controller IC
https://www.analog.com/en/products/lt3799.html
We have special batteries which are pretty much always 400V +/-5V no matter what the state of charge.
We want to charge them with a non isolated “controlled open loop” BCM Boost PFC converter as attached. (we’ll be careful). PDF schem and LTspice sim as attached.
This involves setting up the internal transconductance error amplifier in an LT3799 (Boost BCM PFC) IC as a simple buffer as shown. Then one simply adjusts the charge current by adjusting the voltage into the CTRL3 pin of the LT3799 controller as shown. (“iterative set and check algorithm”)
Can you see any problems with this? That is, the connection of the internal transconductance opamp as a "voltage follower" as shown.
Datasheet: LT3799 BCM Boost PFC controller IC
https://www.analog.com/en/products/lt3799.html
