Non-isolated LED Lighting Driver IC Performance Test Report High Efficiency Boundary Mode Constant Current LED Driver Controller for Offline Applications Requiring High Power Factor RT8487 High Efficiency Boundary Mode Constant Current LED Driver with Build-in 620V/1.8A Power MOSFET for Offline Applications Requiring High Power Factor RT8497 http://www.richtek.com/LED RT8487 Performance Test Result High Efficiency Boundary Mode Constant Current LED Driver Controller for Offline Applications Requiring High Power Factor VAC [V] PIN [watt] VOUT [V] IOUT[mA] Eff. [%] PFC 180 200 220 240 264 34.42 34.35 34.41 34.47 34.64 41.31 41.19 41.12 41.09 41.07 756 757 758 759 761 90.73% 90.77% 90.58% 90.46% 90.20% 0.986 0.983 0.979 0.974 0.967 VAC [V] 90 132 220 264 PIN [watt] 16.30 16.30 16.46 16.61 VOUT [V] 42.13 42.22 42.28 42.41 IOUT [mA] 344.5 346.5 346.8 346.9 Eff. [%] 89.04% 89.75% 89.08% 88.57% PFC 0.973 0.988 0.989 0.981 2 RT8487 THD Test Result – Passed IEC 61000-3-2 Class C Standard 80% Class C Class D Measured 70% 60% Passed IEC 61000-3-2 Class C 50% 40% 30% 20% 10% 0% 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 3 RT8497 Performance Test Result High Efficiency Boundary Mode Constant Current LED Driver with Build-in 620V/1.8A Power MOSFET for Offline Applications Requiring High Power Factor VAC [V] PIN [Watt] VOUT [V] IOUT [mA] Eff. [%] PFC THD [%] 198 220 230 240 264 9.94 9.95 9.97 9.98 10.00 71.52 71.52 71.55 71.55 71.54 126.4 126.2 126.3 126.3 126.2 90.95% 90.71% 90.64% 90.55% 90.28% 0.979 0.978 0.977 0.975 0.969 14.13 12.58 12.01 11.59 10.86 VAC [V] 180 220 264 PIN [Watt] 7.94 7.96 8.02 VOUT [V] 47.15 47.06 47.01 IOUT [mA] 151.2 151 151.5 Eff. [%] 89.79% 89.27% 88.80% PFC 0.985 0.976 0.957 THD [%] 9.05 9.9 12.89 4 RT8487 Current Ripple Removal (CRR) Test Result ILED Ripple drops from ±46.41% to ±6.62% Without CRR With CRR ILED Ripple = ±46.41% ILED Ripple = ±6.62% 5 RT8487 Current Ripple Removal (CRR) Test Result - tiny drop in efficiency gains excellent current ripple improvement PF 1 Only 4~5 % decrease in efficiency in CRR mode; PF value, current regulation & THD keep the same performance. Without CRR 0.99 With CRR 0.98 0.97 0.96 PF Efficiency 95% 0.95 0.94 0.93 Without CRR 93% 0.92 0.91 With CRR 0.9 91% 90 115 140 165 190 215 240 265 Line Voltage (V) Line Regulation 190 89% Without CRR 188 With CRR 186 87% ILED (mA) 184 85% 182 180 178 83% 176 174 172 81% 170 90 115 140 165 190 215 240 265 Line Voltage (V) 79% THD 30 Without CRR 77% With CRR 25 20 75% 90 115 140 165 190 215 240 Line Voltage (V) 265 THD (%) Efficiency (%) • • 15 10 5 8W / VOUT = 43V / IOUT = 180mA) 0 90 115 140 165 190 Line Voltage (V) 215 240 265 6