TPS54610
SLVS398D − JUNE 2001 − REVISED JULY 2003
www.ti.com
PERFORMANCE GRAPHS
EFFICIENCY
vs
OUTPUT CURRENT
100
95
90
Efficiency − %
Efficiency − %
85
80
75
70
65
60
55
50
0
1
2
3
4
5
IO − Output Current − A
6
7
VO = 2.5 V
VO = 1.8 V
VO = 1.2 V
VI = 3.3 V,
f = 550 kHz,
L = 4.7
µH,
TA = 25°C
100
95
90
VO = 3.3 V
VO = 1.8 V
VO = 1.2 V
VI = 5 V,
f = 550 kHz,
L = 4.7
µH,
TA = 25°C
0
1
2
3
4
5
IO − Output Current − A
6
7
Load Regulation
85
80
75
70
65
60
55
50
EFFICIENCY
vs
OUTPUT CURRENT
1.004
1.003
1.002
1.001
1
0.999
0.998
0.997
0.996
0
LOAD REGULATION
vs
OUTPUT CURRENT
VI = 5 V,
VO = 3.3 V,
TA = 25°C,
fs = 550 kHz
1
2
3
4
5
6
IO − Output Current − A
Figure 12
LINE REGULATION
vs
INPUT VOLTAGE
1.002
1.0015
1.001
Line Regulation
1.0005
1
0.9995
No Load
0.999
0.9985
0.998
4
4.5
5
5.5
6
VI − Input Voltage − V
−20
100
1k
0
IO = 6 A
VI = 5 V,
VO = 3.3 V,
TA = 25°C,
fs = 550 kHz
Gain − dB
IO = 3 A
60
Figure 13
Figure 14
AMBIENT TEMPERATURE
vs
LOAD CURRENT
180
Ambient Temperature −
°
C
125
115
105
95
85
75
65
55
45
35
VI = 3.3 V
Safe Operating Area(1)
VI = 5 V
TJ = 125°C
fs = 700 kHz
LOOP RESPONSE
VI = 5 V,
VO = 3.3 V,
IO = 6 A,
TA = 25°C,
fs = 550 kHz
40
135
Phase −Degrees
20
Phase
Gain
90
45
10 k
100 k
0
1M
25
0
1
2
3
4
5
6
7
8
IO − Output Current − A
f − Frequency − Hz
Figure 15
Figure 16
Figure 17
Output Voltage − 50 mV/div
OUTPUT RIPPLE VOLTAGE
Output Ripple Voltage − 10 mV/div
VI = 5 V,
VO = 3.3 V,
6A, 350 kHz
LOAD TRANSIENT RESPONSE
Input Voltage − 2 V/div
SLOW-START TIMING
VI = 5 V,
0.047
µF
Slow-start Cap
VI = 5 V,
1A to 5A,
Output Current − 2 A/div
Time − 1
µs/div
100
µs/div
4.0 ms/div
Figure 18
Figure 19
Figure 20
(1) Safe operating area is applicable to the test board conditions in the Dissipation Ratings
10
Output Voltage − 2 V/div
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