参数资料
型号: TPS54352PWPG4
厂商: TEXAS INSTRUMENTS INC
元件分类: 稳压器
英文描述: 6.5 A SWITCHING REGULATOR, 600 kHz SWITCHING FREQ-MAX, PDSO16
封装: GREEN, PLASTIC, HTSSOP-16
文件页数: 7/35页
文件大小: 858K
代理商: TPS54352PWPG4
TPS54352,TPS54353
TPS54354,TPS54355
TPS54356,TPS54357
SLVS519A MAY 2004 REVISED OCTOBER 2004
www.ti.com
15
Conditions are VI = 12 V, VO = 3.3 V, fs = 500 kHz, IO = 3 A, TA = 25 °C, unless otherwise noted
Figure 14
VI = 5 V/div
VO= 2 V/div
V(PWRGD)= 2 V/div
POWER DOWN
Time 2 ms/div
Power
Down
W
aveforms
V
See Figure 25
Figure 15
50
55
60
65
70
75
80
85
90
95
100
01
23
4
VI = 18 V
IO Output Current A
Efficiency
%
EFFICIENCY
vs
OUTPUT CURRENT
VI = 12 V
VI = 6 V
See Figure 26
Figure 16
I(L1) = 200 mA/div
V(PH) = 5 V/div
CONTINUOUS CONDUCTION MODE
Time 1
s/div
Continuous
Conduction
Mode
See Figure 26
Figure 17
I(L1) = 200 mA/div
V(PH) = 5 V/div
LIGHT LOAD CONDUCTION
Time 1
s/div
Light
Load
Conduction
See Figure 26
Figure 18
VI = 10 V/div
VO1(3.3)= 2 V/div
V(PWRGD1)= 2V/div
SEQUENCING WAVEFORMS
Time 2 ms/div
Sequencing
W
aveforms
V
VO2 (1.8)= 2 V/div
See Figure 27
Figure 19
V(PH1) = 10 V/div
VI = 50 mV/div (ac coupled)
INPUT RIPPLE CANCELLATION
Time 1
s/div
Input
Ripple
Cancellation
V
V(PH2) = 10 V/div
See Figure 27
Figure 20
60
50
40
30
20
10
0
10
20
30
40
50
60
100
1 k
10 k
100 k
1 M
180
150
120
90
60
30
0
30
60
90
120
150
180
Phase
Gain
f Frequency Hz
G
Gain
dB
Phase
Degrees
MEASURED LOOP RESPONSE
100
mF POSCAP
See Figure 28
Figure 21
60
50
40
30
20
10
0
10
20
30
40
50
60
100
1 k
10 k
100 k
1 M
180
150
120
90
60
30
0
30
60
90
120
150
180
Phase
Gain
f Frequency Hz
G
Gain
dB
Phase
Degrees
MEASURED LOOP RESPONSE
2 x 180
mF SP CAPACITORS
See Figure 29
Figure 22
60
50
40
30
20
10
0
10
20
30
40
50
60
100
1 k
10 k
100 k
1 M
180
150
120
90
60
30
0
30
60
90
120
150
180
Phase
Gain
f Frequency Hz
G
Gain
dB
Phase
Degrees
MEASURED LOOP RESPONSE
330
mF OSCON
See Figure 30
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