TPS54010_15 Datasheet, PDF (18/29 Pages) Texas Instruments – 2.2 – 4 -V, 14-A OUTPUT SYNCHRONOUS BUCK PWM SWITCHER WITH INTEGRATED FETs (SWIFT™)

TPS54010
SLVS509B – MAY 2004 – REVISED JUNE 2005
PERFORMANCE GRAPHS
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The performance data for Figure 25 through Figure 34 are for the circuit in Figure 13. Conditions are PVIN = 2.5
V, VIN = 3.3 V, V_O = 1.5 V, f_s = 700 kHz, and I_O = 7 A, T_A = 25°C, unless otherwise specified.
FREE-AIR TEMPERATURE
vs
MAXIMUM OUTPUT CURRENT
125
115
V_O = 1.5 V,
PVIN = V_I = 3.3 V,
105
T_J = 125°C
95
85
75
65
55
45
Safe Operating Area
35
25
15
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
I_O − Output Current − A
Note: Figure 25 applies to the application circuit
(Figure 13) installed on a 3 inch x 3 inch x 0.062 inch
four-layer PCB.
Figure 25.
MEASURED LOOP RESPONSE
vs
FREQUENCY
60
180
Phase
40
120
20
60
Gain
0
0
-20
-60
-40
-60
100
1k
10 k
100 k
f - Frequency - Hz
-120
-180
1M
Figure 26.
0.5
0.4
0.3
0.2
0.1
0
-0.1
-0.2
-0.3
-0.4
-0.5
0
LOAD REGULATION
vs
OUTPUT CURRENT
3.3 V
2.2 V
2.5 V
4.0 V
2 4 6 8 10 12 14 16
I_O - Output Current - A
Figure 27.
LINE REGULATION
vs
PVIN
0.3
0.25
0.2
I_O = 0A
0.15
0.1
0.05
0
I_O = 7A
-0.05
-0.1
I_O = 14A
-0.15
-0.2
-0.25
-0.3
2
2.5
3
3.5
4
PVIN - V
Figure 28.
100
95
90
85
80
75
70
65
60
55
50
0
EFFICIENCY
vs
OUTPUT CURRENT
2.2 V
3.3 V
2.5 V
4.0 V
2 4 6 8 10 12 14 16
I_O - Output Current - A
Figure 29.
INPUT RIPPLE VOLTAGE
PVIN(RIPPLE) = 100 mV/div (ac coupled)
I_O = 14 A
V_(PH) = 1 V/div
Time = 500 nsec/div
Figure 30.
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