1、LP8773S+LP20R100T-12V4A Test Report,By Min Lei Date: 9-10-18,2,1. Specification,3,2. Schematic,4,Top side,Bottom side,3. Circuit Board Photograph,LP8773S,LP20R100T,5,4.1 Bill of Material,4.2 Bill of Material(Cont.),6/21,7,5. Transformer Drawing,8,* Note: Output voltage measured at the end of PCB .,6

2、. Ripple ,Regulation and Efficiency,9,* Test conditions: Vin increased from 0V.,7. AC Startup Voltage,Vinac_Startup=68.4V No Load,Vinac_Startup=80.7V Full Load,8.AC Brownout Voltage,VIN_BROWNOUT =41.4V No Load,VIN_BROWNOUT =73.8V Full Load,10/21,11,9. Vcc Range,Vin=90Vac/60Hz, No Load,Vin=90Vac/60Hz

3、, Full Load,Vin=264Vac/50Hz, No Load,Vin=264Vac/50Hz, Full Load,VCC Min=14.6V,VCC Max=18.8V,VCC Min=14.4V,VCC Max=18.2V,* All test conditions: 10VVCC34V,12,* Test conditions: 90Vac/Full Load; Turn on delay 9mS,10. Turn-on Delay and Hold up Time,T_Turn-on Delay=2.68S 90Vac/60Hz,Full Load,T_Hold up=11

4、.5mS 90Vac/60Hz,Full Load,13,* Test conditions: 264Vac/Full Load; Vpk-pk100V,11. Vd,Normal Vpk-pk=67.2V,Short Vpk-pk=57.6V,14,* Test conditions: 264Vac/Full Load; Vds650V,12. Vds,Normal Vds-max=576V,Short Vds-max=508V,15,13. Ripple and Noise,Vin=90Vac/60Hz, No Load,Vin=90Vac/60Hz, Full Load,Vin=264V

5、ac/50Hz, No Load,Vin=264Vac/50Hz, Full Load,Vripple 26mV,Vripple 130mV,Vripple 34mV,Vripple 94mV,* All test conditions: Vripple200mV and measured at the end of PCB.,16,14. Output Overshoot and Risetime,Vin=90Vac/60Hz, No Load,Vin=90Vac/60Hz, Full Load,Vin=264Vac/50Hz, No Load,Vin=264Vac/50Hz, Full L

6、oad,VOUT=3.39% T_Risetime=5.82mS,* All test conditions: Vout OverShoot 10% and Rise time 30mS.,VOUT= 5.17% T_Risetime=12.74mS,VOUT= 3.39% T_Risetime=6.08mS,VOUT= 3.448% T_Risetime=11.64mS,17,VOUTMAX=12.5V VOUTMIN=11.7V,15. Dynamic Load,* All test conditions: 11.4VVout12.6V,VOUTMAX=12.6V VOUTMIN=11.7

7、V,Vin=90Vac/60Hz, Io from 0 to 100% Slew rate:255mA/uS, F=100Hz,Vin=264Vac/50Hz, Io from 0 to 100% Slew rate:255mA/uS, F=100Hz,16. Transformer Flux Density,18/21,19,17. Component Temperature,* All test conditions: Component temperature below 120 at full load.,20,* Test conditions: Full Resistive Load.,18. Conducted Emission,Vin=230Vac/50Hz, N Channel,Vin=120Vac/60Hz, L Channel,Vin=120Vac/60Hz, N Channel,Vin=230Vac/50Hz, L Channel,21,* Test conditions: Full Resistive Load.,19. Ra