Murata recommends a PCB layout with a solid ground plane and a thermal relief pattern under the device to ensure good thermal conductivity. A minimum of 2 oz copper thickness is recommended.
To ensure reliable start-up, Murata recommends a soft-start circuit or a ramp-up of the input voltage to prevent inrush currents. Additionally, a minimum input voltage of 10.5V is recommended.
The maximum allowed capacitance on the output is 220uF. Exceeding this value may cause instability or oscillations in the converter.
The 84223C is rated for operation up to 85°C ambient temperature. However, derating of the output power is required above 70°C. Consult the datasheet for derating curves.
To troubleshoot oscillations or instability, check the PCB layout for proper thermal management, ensure the input voltage is within the recommended range, and verify that the output capacitance is within the recommended value. Also, check for any noise or ripple on the input or output lines.
