T
treez
Guest
Hello,
We are doing a Buckboost converter with an LT8705 controller.
For various reasons, we need to have an external error amplifier to regulate the output, rather than using the internal transconductance error amplifier.
Due to this, should we ground the Feedback pin, or should we connect it to 1V via a potential divider?........obviously connecting the FB pin to 1V, will mean the internal transconductance error amplifier having less gain....(compared to having the Feedback pin grounded)
The attached mage shows the Feedback pin grounded.
LT8705 Datasheet
http://cds.linear.com/docs/en/datasheet/8705fb.pdf
We are doing a Buckboost converter with an LT8705 controller.
For various reasons, we need to have an external error amplifier to regulate the output, rather than using the internal transconductance error amplifier.
Due to this, should we ground the Feedback pin, or should we connect it to 1V via a potential divider?........obviously connecting the FB pin to 1V, will mean the internal transconductance error amplifier having less gain....(compared to having the Feedback pin grounded)
The attached mage shows the Feedback pin grounded.
LT8705 Datasheet
http://cds.linear.com/docs/en/datasheet/8705fb.pdf
Last edited by a moderator: