100W LED driver evaluation board using high-frequency LCC transformer to achieve low-cost and miniaturized design,REF_ICL5102_U100W

This 100 W reference design highlights the excellent power quality and high frequency performance of the half-bridge (HB) driver using the ICL5102 with the economical CoolMOS™ P7 series. The design takes full advantage of the applicable frequency range of the HB driver to create Highly compact LCC transformer. This transformer integrates the series inductance of the LCC resonant tank. Relying on this high power density transformer design, the high frequency operation capability can drive system cost and size reduction.

REF_ICL5102_U100W_LCC is a 100 W LED power supply that provides constant current output over a voltage range of 55 V to 20 V. Features include: wide range output current from 1.82 A to 0.018 A, wide range of analog dimming levels from 100% to 1%, fast turn-on time of 500 ms (worst case), 30% effective at 267 V _RMS High power factor exceeding 0.9 at above load, input current THD less than 10% at 20% load and above at effective voltage of 267 V _{RMS .}

The product has the following protection functions:

Output short circuit protection for main output
LLC overcurrent protection
Capacitive mode adjustment
Over temperature protection (OTP)
Output overvoltage protection (OVP)
Undervoltage detection (BO)

Key Features, Benefits and Applications

characteristic	Advantage	application
Smart high-frequency operation from 180–450 kHz LCC transformer design with integrated series resonant inductor Efficiency at rated load: 93.0% at 230 V _RMS ( 91.5% at 120 V _{RMS )} Power factor: greater than 0.9 at 267 V _{RMS effective voltage and 30% load} Input current THD: THD less than 10% at effective voltage 267 V _RMS and load 20% Input voltage range: 90–267 V _AC Adjusted main output current: 0.018 –1.82 A, corresponding output voltage range 20 V _DC to 55 V _DC 100% to 1% analog dimming Lighting time: tT2L < 500 ms at 90 V _AC Harmonics: Meets Class C requirements of the latest EN61000-3-2 standard EMI: Comply with EN55015 standard	High efficiency and excellent power quality Suitable for high power density designs Controlled thermal performance High power factor and low THD Stable output current Various monitoring and protection functions Highly integrated, cost-effective solution that simplifies components	LED driver High-ceiling area or office lighting Street lighting/smart street lights/outdoor lighting

Component list

ICL5102
600 V CoolMOS™ P7 Superjunction MOSFET
(IPN60R360P7S)
600 VN Channel Small Signal Depletion Mode MOSFET
(BSS126)