TPS5430-Q1
www.ti.com ................................................................................................................................................... SLVS751C–NOVEMBER 2007–REVISED JULY 2009
PERFORMANCE GRAPHS
The performance graphs (Figure 15 through Figure 21) are applicable to the circuit in Figure 11, TA = 25°C (unless otherwise
specified).
0.3
100
V = 10.8 V
0.2
I
V = 12 V
95
90
I
V = 15 V
I
0.1
0
V = 19.8 V
I
V = 18 V
I
85
-0.1
80
75
-0.2
-0.3
2
0
0.5
1
1.5
2.5
3
0
0.5
1
1.5
2
2.5
3
3.5
I
- Output Current - A
O
I
- Output Current - A
O
Figure 15. Efficiency vs Output Current
Figure 16. Output Regulation vs Output Current
0.1
VIN = 100 mV/Div (AC Coupled)
0.08
0.06
0.04
0.02
I
= 3 A
I
= 1.5 A
O
O
0
-0.02
-0.04
-0.06
PH = 5 V/Div
I
= 0 A
O
-0.08
-0.1
t -Time - 500 ns/Div
10.8
13.8
16.8
19.8
V - Input Voltage - V
I
Figure 17. Input Regulation vs Input Voltage
Figure 18. Input Voltage Ripple and PH Node, IO = 3 A
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