Datasheet

UG-205 Evaluation Board User Guide
Rev. A | Page 6 of 12
OTHER INFORMATION ABOUT THE EVALUATION BOARD PCB LAYOUT
As seen in Figure 1, the layout of this evaluation board is not
optimized for the smallest PCB area. It is laid out in such a way
that any of the components can be desoldered and replaced
easily with different components with a hand soldering iron so
that the user can modify the existing design without acquiring
a new PCB layout. The physical size of the compensation
components is 0603, which is selected for its ease of hand
soldering when reworking the board is needed. The size of
these components can be 0402 or even smaller in the final
design. Note that there are extra place holders for input bulk
capacitors, output filter capacitors, and MOSFETs. The user
can remove, add, or change any of these power components
to achieve a particular design objective. The track functions,
where TRK1 and TRK2 are pulled up to VCCO through 0 Ω
dummy resistors, are not used on this evaluation board. Also
dummy 0 Ω resistors are placed at the driver gates, DHx and
DLx, for evaluation purpose only and can be removed in the
final design. Furthermore, many test points are placed on the
evaluation board so that the user can easily evaluate the perfor-
mances of the ADP1850 with an oscilloscope. See Figure 7, the
evaluation board schematic, for more information.