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LM3445_Buck_Dimming Test Report
LM3445_Buck_Dimming Application: Contents: ? Schematic; ? Electronic Performance; ? Dimming Ability; ? EMI Test Data; ? Surge Inrush Current Test Data; ? BOM Cost; 2Schematic: Electronic Performance: Comment: ? Efficiency: 88%; (@ output: 36V / 300mA Input: 100V / 60Hz); ? PF: 0.9; ? Ripple: About 43% (@ 680uF output cap), it looks like better than some other solution under the same output cap, because its input current waveform looks like a square but not sine; ? Line regulation: ±5%, and It can be better if work under C.C mode. Vin (V) Iin (A) Pin (W) Vo (V) Io (mA) Ipk (mA) (W) Efficiency PF Ripple Line regulation 90.26 0.1416 11.89 36.30 288 124 10.46 87.93% 0.9370 43.06% ±4.35%100.69 0.1329 12.34 36.32 300 128 10.91 88.30% 0.9393 42.67% 110.47 0.1245 12.91 36.33 314 142 11.40 88.36% 0.9471 45.22% Dimming Ability _ dimming data: Dimme r No. Supplier Leading or trailing Io (mA) under different percent of dimmer’s knob Flicker? Flicker Range Io Range 100% 80% 60% 40% 20% 0% #1 PANASONIC(WN575149) L 347.6 272.9 182.6 105.7 8.7 1.6 NO 0.4%~97.4% #2 LEVITON(057) L 353 212.3 82.4 40.6 25.1 23.3 NO 6.5%~98.9% #3 LUTRON(S23) T 250.1 232.4 200.5 165.9 80.4 16.4 NO 4.6%~70.1% #4 LUTRON(S27) T 323.7 257.1 223.9 148.6 97.8 24 NO 6.7%~90.7% #5 LUTRON(S37) L 349.8 316.9 171.5 125.1 82 32.6 NO 9.1%~98.0% #6 LUTRON(S46) L 354.7 261.4 168.5 120.1 64.1 23.8 NO 6.7%~99.4% #7 Panasonic(WN575159) L 324.3 308.4 221.6 132.4 19.1 9.3 NO 2.6%~90.9% #8 Panasonic(WN576159) L 329.7 302.3 219.7 123.4 18.9 8.4 NO 2.4%~92.4% #9 TOSHIBA(DG9081N) T 361.5 325.7 167.5 36.5 10 7.6 NO 2.1%~101.3% #10 LUTRON(S18) L 238.3 165.7 103 58 37.9 25.6 NO 7.2%~66.8% #11 LUTRON(6B38) L 343.1 161.7 111.1 78.2 50.1 38.3 NO 10.7%~96.1% #12 LEVITON(898F) L 359.3 313.7 156.1 83 40.1 21.4 NO 6.0%~100.7% #13 LUTRON(6B38) L 347.2 157.9 98.9 62.2 43.1 34.2 NO 9.6%~97.3% Dimming ability test data: Dimming Ability _ dimming curve Summary: Dimming curve 0.0% 20.0% 40.0% 60.0% 80.0% 100.0% 120.0% 0% 20% 40%
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