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Appendix A Table Data – Buck-Boost Configuration
Pout Eff = Efficiency Calculated using Pout = Pout reading on power meter
Calc Pout Eff = Efficiency Calculated using Pout = Vout × Iout
Test Data ~12V LED Load
Input Measurement Load Measurement Calculation
Vin Iin Pin (W) PF %THD Vout Iout Pout Pout Eff Pout Calc Loss (W)
(Vrms) (mArms) (Vdc) (mAdc) Meas (%) Calc (W) Pout Eff
(W) (%)
90 0.083 7.17 0.978 20.7 12.21 454 5.68 79.2 5.54 77.3 1.49
100 0.078 7.47 0.974 21.6 12.23 467 5.86 78.4 5.71 76.5 1.61
120 0.072 8.07 0.961 23.6 12.28 496 6.25 77.4 6.09 75.5 1.82
135 0.068 8.43 0.944 24.8 12.3 510 6.44 76.4 6.27 74.4 1.99
Test Data ~18V LED Load
Input Measurement Load Measurement Calculation
Vin Iin Pin (W) PF %THD Vout Iout Pout Pout Eff Pout Calc Loss (W)
(Vrms) (mArms) (Vdc) (mAdc) Meas (%) Calc (W) Pout Eff
(W) (%)
90 0.104 9.04 0.982 18.8 18.08 407 7.49 82.9 7.36 81.4 1.55
100 0.097 9.4 0.984 17.8 18.11 422 7.77 82.7 7.64 81.3 1.63
120 0.088 10.17 0.982 18.2 18.18 451 8.35 82.1 8.20 80.6 1.82
135 0.084 10.84 0.977 19.6 18.23 476 8.84 81.5 8.68 80.1 2
Test Data ~25V LED Load
Input Measurement Load Measurement Calculation
Vin Iin Pin (W) PF %THD Vout Iout Pout Pout Eff Pout Calc Loss (W)
(Vrms) (mArms) (Vdc) (mAdc) Meas (%) Calc (W) Pout Eff
(W) (%)
90 0.12 10.46 0.978 20.1 23.81 368 8.86 84.7 8.76 83.8 1.6
100 0.114 11.02 0.984 17.1 23.87 386 9.33 84.7 9.21 83.6 1.69
120 0.104 12.12 0.985 17.7 23.98 421 10.23 84.4 10.10 83.3 1.89
135 0.097 12.7 0.985 16.7 24.01 437 10.65 83.9 10.49 82.6 2.05
Test Data ~30V LED Load
Input Measurement Load Measurement Calculation
Vin Iin Pin (W) PF %THD Vout Iout Pout Pout Eff Pout Calc Loss (W)
(Vrms) (mArms) (Vdc) (mAdc) Meas (%) Calc (W) Pout Eff
(W) (%)
90 0.135 11.67 0.974 21.8 29.56 336 10.02 85.9 9.93 85.1 1.65
100 0.127 12.33 0.981 19.1 29.63 354 10.6 86.0 10.49 85.1 1.73
120 0.115 13.31 0.984 17.8 29.73 381 11.43 85.9 11.33 85.1 1.88
135 0.109 14.24 0.986 16.8 29.82 404 12.2 85.7 12.05 84.6 2.04
Test Data ~35V LED Load
Input Measurement Load Measurement Calculation
Vin Iin Pin (W) PF %THD Vout Iout Pout Pout Eff Pout Calc Loss (W)
(Vrms) (mArms) (Vdc) (mAdc) Meas (%) Calc (W) Pout Eff
(W) (%)
90 0.146 12.63 0.973 22.2 34.91 312 10.96 86.8 10.89 86.2 1.67
100 0.137 13.2 0.976 21.3 34.99 326 11.5 87.1 11.41 86.4 1.7
120 0.127 14.7 0.982 18.8 35.16 360 12.77 86.9 12.66 86.1 1.93
135 0.118 15.4 0.984 18.2 35.23 376 13.36 86.8 13.25 86.0 2.04
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Table Data – Buck-Boost Configuration SLVU813A–November 2012–Revised June 2013
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