www.德州仪器.com
TYPICALCHARACTERISTICS
I - 输出 电流 - 毫安
O
效率 - %
T = 25 C
V = 3.3 v
一个
O
o
pfm / pwm 模式
V = 3.8 v
I
V = 4.2 v
I
V = 5 v
I
0.01
0.1
1
10
100
1 k
10 k
I - 输出 电流 - 毫安
O
效率 - %
T = 25 C
V = 3.3 v
一个
O
o
pwm 模式
V = 3.8 v
I
V = 4.2 v
I
V = 5 v
I
0.01
0.1
1
10
100
1 k
10 k
TPS65020
SLVS607–SEPTEMBER2005
graphsweretakenusingtheevmwiththefollowinginductor/outputcapacitorcombinations:
CONVERTERINDUCTOROUTPUTCAPACITOROUTPUTCAPACITORVALUE
vdcdc1vlcf4020-2r2c2012x5r0j106m2
×
10
µ
F
vdcdc2vlcf4020-2r2c2012x5r0j106m2
×
10
µ
F
vdcdc3vlf4012at-2r2m1r5c2012x5r0j106m2
×
10
µ
F
table1.tableofgraphs
图示
η
efficiencyvsoutputcurrent1,2,3,4,5,6,7
linetransientresponse8,9,10
loadtransientresponse11,12,13
VDCDC2PFMoperation14
VDCDC2lowripplePFMoperation15
VDCDC2PWMoperation16
startupvdcdc1,vdcdc2andvdcdc317
StartupLDO1andLDO218
linetransientresponse19,20,21
loadtransientresponse22,23,24
dcdc1:efficiencydcdc1:效率
vsvs
OUTPUTCURRENTOUTPUTCURRENT
figure1.figure2.
13
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