Hardware - NEC EV-K0-HCD Hardware User Manual

EV-K0-HCD Evaluation Kit User's Manual

2. HARDWARE

The EV-K0-HCD board measures 3.15 × 3.15 inches or 80 × 80 millimeters (mm). This small form
factor is enabled by the use of components such as inductors that are small in size thanks to the
µPD78F8024 MCU's constant-current drives with high switching frequency.
The board is designed with four layers. The top layer contains most of the components, the first middle
layer serves as the power plane, the second middle layer adds additional space for traces, and the
bottom layer serves as the ground plane and assembly for the temperature sensor and high-power
LEDs.
The heat generated by the LEDs is dissipated through the pads and vias surrounding the LEDs, and
LED temperature is sensed by the temperature sensor mounted on top of the dissipation pad.
Figure 1. EV-K0-HCD Board (Top View)
Figure 2. EV-K0-HCD Board (Bottom View)
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