www.德州仪器.com
0
10
20
30
40
50
60
70
80
90
0 0.5 1 1.5 2
V
I
= 12 v,
V
O
= 3.3 v,
l = 15
H
I
O
− 输出 电流 − 一个
效率 − %
0
0.05
0.1
0.15
0.2
0.25
−40 −20 0 20 40 60 80 100 120 140
r
ds(在)
− n-频道 转变 −
V
I
= 8 v,
V
I
= 12 v,
V
I
= 14 v
T
一个
− temperature −
C
Ω
V
SW
5 v/div
V
O
20 mv/div
I
(inductor)
100 毫安/div
500 ns/div
V
I
= 12 v,
V
O
= 3.3 v/45 毫安
V
SW
5 v/div
V
O
20 mv/div
I
(inductor)
1 一个/div
500 ns/div
V
I
= 12 v,
V
O
= 3.3 v/1.5 一个
tps65160,tps65160a
SLVS566B–MARCH2005–REVISEDJULY2005
efficiencystep-downconverterstep-downconverter
vsr
ds(在)
-n-channelswitch
LOADCURRENTvs
温度
figure7.figure8.
步伐-downconverterstep-downconverter
PWMOPERATIONPWMOPERATION
CONTINUOUSMODEDISCONTINUOUSMODE
figure9.figure10.
9