A good PCB layout for the HCPL-3150 involves keeping the input and output circuits separate, using a ground plane, and minimizing the length of the input and output traces. It's also recommended to use a 0.1uF capacitor between the VCC and GND pins to filter out noise.
To ensure proper isolation, make sure to maintain a minimum creepage distance of 1.5mm between the input and output circuits, and use a suitable insulating material (e.g. FR4) for the PCB. Also, avoid using conductive materials (e.g. copper) for the PCB's solder mask.
The maximum allowable voltage across the isolation barrier is 2.5kVrms for 1 minute, as per the IEC 60747-5-5 standard. However, it's recommended to derate the voltage to ensure reliable operation.
The LED current in the HCPL-3150 should be limited to 10mA to ensure reliable operation. A series resistor can be used to limit the current, and the voltage across the LED should be kept below 1.7V.
The recommended operating temperature range for the HCPL-3150 is -40°C to 100°C. However, the device can be operated up to 125°C with derated performance.
HCPL-3150 datasheet
by Avago Technologies
