Apex Microtechnology recommends a 4-layer PCB with a solid ground plane, and thermal vias under the package to ensure efficient heat dissipation. A minimum of 2 oz copper thickness is recommended for the top and bottom layers.
To ensure reliable operation at high temperatures, it's essential to follow the recommended derating curves, ensure proper thermal management, and consider using a heat sink or thermal interface material. Additionally, Apex Microtechnology recommends operating the device within the specified junction temperature range.
Apex Microtechnology recommends using a pi-filter configuration with a combination of inductors and capacitors to reduce EMI. The specific component values will depend on the application and operating frequency, but a general guideline is to use a 10uF capacitor and a 1uH inductor for the input filter, and a 100nF capacitor and a 10uH inductor for the output filter.
Apex Microtechnology recommends using external overvoltage protection (OVP) and overcurrent protection (OCP) circuits to prevent damage to the device. A zener diode or a voltage clamp can be used for OVP, and a current sense resistor with a comparator or a dedicated OCP IC can be used for OCP.
Apex Microtechnology recommends a slow startup sequence to prevent inrush currents and ensure reliable operation. A recommended sequence is to apply the input voltage, followed by the enable signal, and then the input signal. For shutdown, the sequence should be reversed.
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