Advanced Development of BLUI Blanket Phototherapy Prototypes to Reduce the Heat Produced by LEDs to Meet Phototherapy Standards in Neonatal Jaundice

Background: Jaundice in newborns has caused a diagnostic challenge for doctors. Almost every newborn has an increase in serum bilirubin, and more than 50% look yellow during the first week of life. The development of phototherapy lamps has been widely carried out. The most recent one is phototherapy with a blanket model that has been developed and used in developed countries. Method: The purpose of this study is to find out how to reduce the temperature of the touch surface so that it is included in the safe category for use, which is around 37°C-38°C. The temperature generated by the blanket system must be considered to keep the baby comfortable using it. Results: Based on improvements in the parallel circuit arrangement in BLUI Blanket PROTO-3, it is proven that a suitable parallel circuit can reduce temperature, or it can be stated that there is no overheating sign in the cables, connectors, and LED strip lights. The voltage to be set on the voltage regulator is about 7.5V DC. This LED phototherapy blanket received a certificate of passing the test from the Indonesian Ministry of Health’s BPFK with an average light radiation intensity capability of 7.8 µW/cm²/nm. The temperature parameter, after setting the voltage regulator to 7.5V DC, the average temperature produced is around 36.15° C. Conclusion: The strength of the radiation intensity produced by BLUI Blanket PROTO-3 has met the criteria for a safe threshold target according to phototherapy equipment standards by considering 2 crucial parameters: Light intensity and temperature.