Hi Behnam,
For the negative rail you could use a seperate CUK stage.
As LM5155 can not accept a negative feedback voltage, you would have to use a level shifter curcuit for the feedback. As a reference plese have a look here:
https://www.ti.com…
Hi Svetoslav,
there is no such document unfortunately. please refer to the reference design to build the sepic circuit
http://www.ti.com/tool/PMP30487
http://www.ti.com/tool/PMP20197
Hello,
Yout might have a look at this positive to negative example: https://www.ti.com/tool/PMP30487
Otherwise it can work if you reference the whole circuit to the negative potential.
Best regards,
Moritz
Other Parts Discussed in Thread: LM5155 Hi team,
Good day.
Our customer is looking for a gate driver with spice model available to be used for Cuk Converter. Here are the requirements: Vcc = 30 to 60V Channels = 1 Switch Type = MOSFET Driver Topology…
Hi Jimmy,
Thanks for using the e2e forum. I checked for reference designs of inverting SEPIC (Cuk) controllers, but did not find a design with LM5155.
We have a design for a similar controller LM5022. https://www.ti.com/tool/PMP30487
LM5155 is a…
