100W LED driver evaluation board with high frequency LCC transformer design for cost-down and miniaturization
This 100W reference design focuses on demonstrating the great power quality and the supreme high frequency performance of the half-bridge (HB) driver with ICL5102 and the cost-efficient CoolMOS™ P7 family. It fully utilizes the applicable frequency range supported by this HB driver, so as to achieve a highly compact LCC transformer. This transformer integrates the series inductance of the LCC resonance tank. Through this high power density transformer design, significant system-level cost down and size reduction driven by the high frequency operating capability can be realized.
The REF_ICL5102_U100W_LCC is a 100W LED power supply with constant current output in a voltage range from 55 V down to 20 V. Features include a wide output current range from 1.82 A down to 0.018 A, a wide analog dimming level of 100 percent down to 1 percent, fast time-to-light of 50 0ms in the worst case, a high power factor of more than 0.9 above 30 percent load at 267 VRMS and an input current THD of less than 10 percent above 20 percent load at 267 VRMS.
The following protection features are implemented:
- Output short circuit protection of the main output
- LLC over current protection
- Capacitive mode regulation
- Overtemperature protection (OTP)
- Output overvoltage protection (OVP)
- Brown-out detection (BO)
Modular lighting boards
At Infineon we offer a broad variety of primary side ACDC and secondary side DCDC boards dedicated to LED lighting. The LED lighting boards can easily be stacked together for plug-and-play solutions.