半桥llc开关电源波形.pdf

10/10/2014 PMP10375 Rev B Test Results Page 1 of 13 Power Management Solutions 1 Photo The photographs below show the PMP10375 Rev B assembly. This circuit was built on a PMP10375 Rev B PCB. Top side: Bottom side: 10/10/2014 PMP10375 Rev B Test Results Page 2 of 13 Power Management Solutions 2 Efficiency 102VAC/60Hz Vin(ac) Iin(A) Pin(W) PF 32V(V) 32V(A) 15V(V) 15V(A) Pout(W) Eff (%) 101.91 5.78 381.5 0.648 31.88 10.00 16.33 1.01 335.29 87.89% 101.88 5.24 341.7 0.641 31.91 9.01 16.28 0.90 302.13 88.42% 101.82 4.67 302.3 0.635 31.94 8.00 16.23 0.80 268.55 88.84% 101.82 4.15 264.3 0.625 31.97 7.01 16.19 0.71 235.56 89.12% 101.83 3.62 226.2 0.613 31.99 6.01 16.15 0.60 201.89 89.25% 101.84 3.10 188.8 0.599 32.01 5.00 16.12 0.50 168.17 89.07% 101.84 2.56 152.0 0.583 32.03 4.01 16.10 0.41 134.83 88.72% 101.83 2.01 115.6 0.564 32.05 3.01 16.07 0.31 101.34 87.66% 101.78 1.43 78.9 0.541 32.06 2.01 16.05 0.20 67.47 85.57% 101.75 0.83 42.7 0.507 32.09 1.00 16.01 0.10 33.82 79.18% 101.74 0.50 24.6 0.479 32.10 0.50 15.99 0.05 16.82 68.47% 101.75 0.15 6.2 0.414 32.16 0.00 15.85 0.00 0.00 0.00% 10/10/2014 PMP10375 Rev B Test Results Page 3 of 13 Power Management Solutions 120VAC/60Hz Vin(ac) Iin(A) Pin(W) PF 32V(V) 32V(A) 15V(V) 15V(A) Pout(W) Eff (%) 119.87 4.14 367.4 0.741 31.47 10.00 15.84 1.01 330.60 89.98% 120.00 3.76 330.2 0.732 31.58 8.99 15.88 0.90 298.20 90.31% 120.67 3.37 294.0 0.723 31.68 8.00 15.90 0.81 266.24 90.56% 121.34 2.98 257.9 0.713 31.79 7.01 15.93 0.71 234.14 90.79% 120.44 2.61 221.3 0.704 31.84 6.00 15.95 0.60 200.58 90.64% 120.41 2.23 185.6 0.691 31.92 5.01 15.97 0.50 167.94 90.51% 119.98 1.84 149.3 0.677 31.97 4.00 15.98 0.41 134.48 90.09% 120.00 1.44 113.4 0.658 32.02 3.00 15.98 0.31 101.16 89.18% 120.10 1.02 77.4 0.632 32.06 2.00 15.99 0.20 67.35 87.06% 120.02 0.59 41.9 0.593 32.09 1.01 15.99 0.11 33.99 81.17% 120.35 0.36 24.1 0.557 32.10 0.51 15.98 0.06 17.19 71.37% 120.09 0.09 4.7 0.441 37.67 0.00 18.59 0.00 0.00 0.00% 132VAC/60Hz Vin(ac) Iin(A) Pin(W) PF 32V(V) 32V(A) 15V(V) 15V(A) Pout(W) Eff (%) 131.90 4.55 372.0 0.621 32.03 10.00 15.98 1.01 336.44 90.44% 131.96 4.16 333.9 0.609 32.04 9.00 15.98 0.90 302.71 90.66% 132.05 3.77 296.3 0.596 32.05 8.00 15.98 0.80 269.23 90.86% 132.11 3.38 258.9 0.58 32.06 7.00 15.98 0.71 235.72 91.05% 132.15 2.98 221.7 0.564 32.07 6.00 15.99 0.60 201.95 91.09% 132.10 2.54 184.9 0.552 32.09 5.00 15.99 0.50 168.49 91.13% 132.04 2.09 148.5 0.539 32.10 4.00 16.00 0.41 134.94 90.85% 131.99 1.63 112.8 0.525 32.11 3.01 15.99 0.31 101.58 90.09% 131.95 1.16 76.9 0.503 32.12 2.02 16.00 0.20 67.99 88.42% 131.91 0.66 40.9 0.469 32.13 1.01 16.01 0.10 33.92 82.92% 131.88 0.40 23.4 0.441 32.14 0.51 16.00 0.05 17.09 73.05% 131.87 0.11 5.3 0.375 38.59 0.00 19.13 0.00 0.00 0.00% 10/10/2014 PMP10375 Rev B Test Results Page 4 of 13 Power Management Solutions 3 Thermal Images The ambient temperature was 25ºC with no forced air flow. The outputs were loaded with 32V/10A and 15V/1A. 120VAC/60Hz Top side Spot analysis Value AmbTemperature 27.2°C RT4Temperature 87.3°C Q1Temperature 84.2°C Q4Temperature 77.0°C L3_WireTemperature 66.3°C T1_CoreTemperature 88.2°C T1_WireTemperature 86.8°C D2 Temperature 89.6°C R8 Temperature 93.1°C D9 Temperature 87.0°C 10/10/2014 PMP10375 Rev B Test Results Page 5 of 13 Power Management Solutions 120VAC/60Hz Bottom side Spot analysis Value AmbTemperature 24.3°C RT4_BottomTemperature 70.3°C T1_Sec_BottomTemperatur e 86.9°C D2_BottomTemperature 83.1°C Q1_Bottom Temperature 67.3°C 10/10/2014 PMP10375 Rev B Test Results Page 6 of 13 Power Management Solutions 4 Startup The output voltages at startup are shown in the images below. 4.1 No Load @ 102VAC/60Hz 4.2 Full Load (32V/10A and 15V/1A) @ 110VAC/60Hz 10/10/2014 PMP10375 Rev B Test Results Page 7 of 13 Power Management Solutions 4.3 No Load @ 120VAC/60Hz 4.4 Full Load (32V/10A and 15V/1A) @ 120VAC/60Hz 10/10/2014 PMP10375 Rev B Test Results Page 8 of 13 Power Management Solutions 4.5 No Load @ 132VAC/60Hz 4.6 Full Load (32V/10A and 15V/1A) @ 132VAC/60Hz 10/10/2014 PMP10375 Rev B Test Results Page 9 of 13 Power Management Solutions 5 Output Ripple Voltage The output ripple voltages at full load (32V/10A and 15V/1A) are shown in the plots below. 5.1 Full Load @ Vin=102VAC/60Hz 5.2 Full Load @ Vin=120VAC/60Hz 10/10/2014 PMP10375 Rev B Test Results Page 10 of 13 Power Management Solutions 5.3 Full Load @ Vin=132VAC/60Hz 6 Loop Response The frequency response of the feedback loop is shown in the image below. The frequency response was measured by inserting small signal from TP3 and TP4. The outputs were at full load (32V/10A and 15V/1A). 6.1 110 VAC 10/10/2014 PMP10375 Rev B Test Results Page 11 of 13 Power Management Solutions 6.2 120 VAC 6.3 132V VAC 10/10/2014 PMP10375 Rev B Test Results Page 12 of 13 Power Management Solutions 7 Switching Waveforms 7.1 Q4 VDS and C20 voltage @ 110VAC, 32Vout/10A and 15V/1A Channel 2: Q4 VDS, Channel 3: C20 Voltage 7.2 Q4 VDS and C20 voltage @ 120VAC, 32Vout/10A and 15V。