AME5242 Datasheet, PDF (9/15 Pages) Analog Microelectronics – 40V CC/CV Buck Converter

AME
AME5242
40V CC/CV Buck Converter
PC Board Layout Guidance
When laying out the printed circuit board, the following checklist should be uesd to ensure proper operation of the IC.
1) Arrange the power components to reduce the AC loop size consisting of C_IN, IN pin, SW pin and the sckottky diode.
2) Place input decoupling ceramic capacitor C_IN as close to IN pin as possible. C_IN is connected power GND with vias or
short and wide path.
3) Return FB and COMP to signal GND pin, and connect the singal GND to power GND at a single point for the best
noise immunity. Connect exposed pad to power ground copper area with copper and vias.
4) Use copper plane for power GND for best heat disspation and noise immunity.
5) Please feedback resistor close to FB pin.
Top Layer
Bottom Layer
Rev. A.02
9