Reference Designs

Reference Designs are examples of complete applications working under bench conditions.

As pattern layout and component position may cause malfunctions of the IC, EMI noises, or power losses, the following guidelines should be followed:

Traces where high-frequency flow and high-current flow should be kept thick and short to lower line impedance.
Traces where high frequencies and high currents create a loop, should be kept as small as possible.
GND and earth lines should be kept as thick and short as possible.
In off-line SMPS (switch-mode power supply) circuitry, because traces and paths of high voltage exist, component layout and trace length should be carefully considered, as required by safety standards.
Placement of power supply and heat-sinking designs should be carefully considered on the bench using an actual set.
In order to reduce or eliminate shared impedances, the GND pin and its peripheral components should be located as close together as possible. The trace from the overcurrent sense resistor to the input smoothing capacitor should be kept as short and thick as possible.