TECCOhmAug.ppt

,Click to edit Master title style,Click to edit Master text styles,Second level,Third level,Fourth level,Fifth level,*,|Maxim Integrated|Company Confidential,*,TECC 1&13 Ohm20Aug14,DS4830A TECC single inductor circuit with 1/0.3,load,DS4830A,FET1,FET2,Inductor,VDD=3.3V,GND,1/0.3 Ohm,FET2,DS4830A,CAP,GND,GPIO,PWM,PWM,Test Conditions:,Operated in current source mode,Used Coil-craft 2.2 uH Inductor,Dead time is 3 cycle,optimized for better efficiency,Open loop operation,2,|Maxim Integrated|Company Confidential,DS4830A TECC single inductor circuit with 1,load,SL NO,Vin(V),Iin(mA),Pin(mW),Vout(V),Iout(mA),Rload(,),Pout,Efficiency%,1,3.3,67,221.1,0.385,369,1,142.065,64.25,2,3.3,164,541.2,0.613,587,1,359.831,66.48,3,3.3,228,752.4,0.725,694,1,503.15,66.87,4,3.3,384,1267.2,0.942,901,1,848.742,66.97,5,3.3,477,1574.1,1.05,1002,1,1052.1,66.83,6,3.3,578,1907.4,1.15,1101,1,1266.15,66.38,7,3.3,687,2267.1,1.25,1197,1,1496.25,65.99,8,3.3,804,2653.2,1.35,1291,1,1742.85,65.68,3,|Maxim Integrated|Company Confidential,DS4830A TECC single inductor circuit with 0.3,load,SL NO,Vin(V),Iin(mA),Pin(mW),Vout(V),Iout(mA),Rload(,),Pout,Efficiency%,1,3.3,22,72.6,0.096,278,0.3,26.688,36.76,2,3.3,123,405.9,0.243,703,0.3,170.829,42.08,3,3.3,153,504.9,0.272,785,0.3,213.52,42.28,4,3.3,203,669.9,0.314,907,0.3,284.798,42.51,5,3.3,301,993.3,0.382,1102,0.3,420.964,42.38,6,3.3,416,1372.8,0.448,1290,0.3,577.92,42.09,4,|Maxim Integrated|Company Confidential,DS4830A TECC single inductor circuit with 1/0.3,load,5,|Maxim Integrated|Company Confidential,TPS63000:differential voltage Open loop approach with 1&0.3,TPS63000,Inductor,CAP,GND,GND,1/0.3 Ohm,VDD=3.3V,VDD=3.3V,CAP,GND,CAP,Res1,Res2,GND,FB,TPS63000 EVKIT,Note1:Res2 is manually adjustable,6,|Maxim Integrated|Company Confidential,TPS63000:differential voltage Open loop approach with 1,load,SL NO,Vin(V),Iin(mA),Pin(mW),Vout(V),Iout(mA),Rload(,),Pout(mW),Efficiency%,Mode,1,3.3,52,171.6,0.3,297,1,89.1,51.92,Boost,2,3.3,116,382.8,0.463,453,1,209.739,54.79,Boost,3,3.3,208,686.4,0.617,603,1,372.051,54.20,Boost,4,3.3,336,1108.8,0.77,752,1,579.04,52.22,Boost,5,3.3,49,161.7,-0.313,-305,1,95.465,59.04,Buck,6,3.3,102,336.6,-0.466,-454,1,211.564,62.85,Buck,7,3.3,141,465.3,-0.557,-543,1,302.451,65.00,Buck,Observation of buck mode:Cant go beyond 600+mA in TPS63000,7,|Maxim Integrated|Company Confidential,TPS63000:differential voltage Open loop approach with 0.3,load,SL NO,Vin(V),Iin(mA),Pin(mW),Vout(V),Iout(mA),Rload(,),Pout(mW),Efficiency%,Mode,1,3.3,32,105.6,0.097,301,0.3,29.197,27.65,Boost,2,3.3,66,217.8,0.146,453,0.3,66.138,30.37,Boost,3,3.3,115,379.5,0.195,603,0.3,117.585,30.98,Boost,4,3.3,184,607.2,0.245,758,0.3,185.71,30.58,Boost,5,3.3,28,92.4,-0.098,-302,0.3,29.596,32.03,Buck,6,3.3,57,188.1,-0.146,-453,0.3,66.138,35.16,Buck,7,3.3,94,310.2,-0.193,-596,0.3,115.028,37.08,Buck,Observation of buck mode:Cant go beyond 600+mA in TPS63000,8,|Maxim Integrated|Company Confidential,TPS63000:differential voltage Open loop approach with 1&0.3,9,|Maxim Integrated|Company Confidential,DS4830A vs TPS63000,Circuit,Load,Current,Efficiency,TPS63000 Diff V(considered boost mode as worst case),1 Ohm,297,51.92,603,54.20,752,52.22,DS4830A Single Inductor,(considered current source mode as worst case),1 Ohm,369,64.25,587,66.48,901,66.97,TPS63000 Diff V(considered boost mode as worst case),0.3 Ohm,301,27.65,453,30.37,758,30.58,DS4830A Single Inductor(considered current source mode as worst case),0.3 Ohm,278,36.76,703,42.08,907,42.51,10,|Maxim Integrated|Company Confidential,DS4830A vs TPS63000(1,load),11,|Maxim Integrated|Company Confidential,DS4830A vs TPS63000(0.3,load),12,|Maxim Integrated|Company Confidential,Conclusion,DS4830A TECC,single,inductor circuit got better efficiency than TPS63000 differential voltage TECC circuit,Note:Efficiency may decrease for DS4830A TECC dual inductor mode,Comparing with TPS63000 best case of buck mode vs DS4830A TECC,single,inductor circuit,DS4830A got equal and slightly higher efficiency than TPS63000,Observation of buck mode:Cant go beyond 600+mA in TPS63000,13,|Maxim Integrated|Company Confidential,