TPS54610-Q1 Datasheet, PDF (13/23 Pages) Texas Instruments – 3-V TO 6-V INPUT, 6-A OUTPUT SYNCHRONOUS BUCK PWM SWITCHER WITH INTEGRATED FETs (SWIFT™)

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PERFORMANCE GRAPHS
EFFICIENCY
vs
OUTPUT CURRENT
100
95
90
85
80
V_O = 2.5 V
75
V_O = 1.8 V
70
V_O = 1.2 V
65
V_I = 3.3 V,
60
f = 550 kHz,
L = 4.7 µH,
55
T_A = 25°C
50
01234567
I_O − Output Current − A
Figure 13.
EFFICIENCY
vs
OUTPUT CURRENT
100
95
90
85
V_O = 3.3 V
80
75
V_O = 1.8 V
70
V_O = 1.2 V
65
V_I = 5 V,
60
f = 550 kHz,
L = 4.7 µH,
55
T_A = 25°C
50
01234567
I_O − Output Current − A
Figure 14.
1.002
1.0015
1.001
1.0005
1
0.9995
0.999
0.9985
0.998
4
LINE REGULATION
vs
INPUT VOLTAGE
60
V_I = 5 V,
V_O = 3.3 V,
T_A = 25°C,
I_O = 6 A
f_s = 550 kHz
40
I_O = 3 A
20
No Load
0
4.5
5
5.5
V_I − Input Voltage − V
Figure 16.
−20
6
100
LOOP RESPONSE
V_I = 5 V,
180
V_O = 3.3 V,
I_O = 6 A,
T_A = 25°C,
135
f_s = 550 kHz
Gain
90
Phase
45
0
1k
10 k
100 k
1M
f − Frequency − Hz
Figure 17.
OUTPUT RIPPLE VOLTAGE
LOAD TRANSIENT RESPONSE
V_I = 5 V,
V_O = 3.3 V,
6 A, 350 kHz
V_I = 5 V,
1A to 5A,
TPS54610-Q1
SLVS726 – JANUARY 2007
1.004
1.003
1.002
1.001
LOAD REGULATION
vs
OUTPUT CURRENT
V_I = 5 V,
V_O = 3.3 V,
T_A = 25°C,
f_s = 550 kHz
1
0.999
0.998
0.997
0.996
0
1
2
3
4
5
6
I_O − Output Current − A
Figure 15.
AMBIENT TEMPERATURE
vs
LOAD CURRENT⁽¹⁾
125
115
T_J = 125°C
f_s = 700 kHz
105
95
85
Safe Operating Area
75
V_I = 5 V
65
V_I = 3.3 V
55
45
35
25
0123 45678
I_O − Output Current − A
Figure 18.
SLOW-START TIMING
V_I = 5 V ,
No Slow-Start Cap
t - Time = 1 ms/div
Figure 19.
t - Time = 100 ms/div
Figure 20.
(1) Safe operating area is applicable to the test board conditions in the Dissipation Ratings.
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t - Time = 2 ms/div
Figure 21.
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