www.德州仪器.com
TYPICALCHARACTERISTICS
TableofGraphs
10
20
30
40
50
60
70
80
90
100
1 10 100 1 k
Vo1 = 6 v
I
L
− 加载 电流 − 毫安
效率 − %
Vo1 = 15 v
vo1 = 10 v
V
I
= 3.3 v
Vo2, vo3 = 非 加载, 切换
10
20
30
40
50
60
70
80
90
100
1 10 100 1 k
I
L
− 加载 电流 − 毫安
效率 − %
Vo1 = 15 v
vo1 = 10 v
V
I
= 5 v
Vo2, vo3 = 非 加载, 切换
70
75
80
85
90
95
100
2.5 3 3.5 4 4.5 5 5.5 6
Vo1 = 6 v
Vo3 = 15 v
vo2 = 10 v
iload 在 vo1 = 100 毫安
Vo2, vo3 = 非 加载, 切换
V
I
− 输入 voltage − v
效率 − %
TPS65140
TPS65145
SLVS497B–SEPTEMBER2003–REVISEDMARCH2004
图示
MainBoostConverter
效率,mainboostconvertervo1vsloadcurrent1
η
效率,mainboostconvertervo1vsloadcurrent2
EfficiencyvsInputvoltage3
f
sw
switchingfrequencyvsfree-airtemperature4
r
ds(在)
r
ds(在)
n-channelmainswitchq1vsfree-airtemperature5
PWMoperationcontinuousmode6
pwmoperation,discontinuous(lightload)7
loadtransientresponse,c
O
=22µF8
loadtransientresponse,c
O
=2*22µF9
电源-upsequencing10
SoftstartVo111
NegativeChargePump
I
最大值
Vo2maximumloadcurrentvsOutputvoltageVo112
PositiveChargePump
I
最大值
vo3maximumloadcurrentvsoutputvoltagevo1(doublermode)13
I
最大值
vo3maximumloadcurrentvsoutputvoltagevo1(triplermode)14
EFFICIENCYEFFICIENCYEFFICIENCY
vsvsvs
LOADCURRENTLOADCURRENTINPUTVOLTAGE
figure1.figure2.figure3.
8