TPS40210_15 Datasheet, PDF (31/51 Pages) Texas Instruments – TPS4021x 4.5-V to 52-V Input Current Mode Boost Controller

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8.2.1.3 Application Curves
TPS40210, TPS40211
SLUS772F – MARCH 2008 – REVISED MARCH 2015
80
60
40
20
0
-20
-40
-60
-80
100
Phase
Gain
1000
10 k
100 k
f_SW – Frequency – Hz
180
135
90
45
0
-45
-90
-135
-180
1M
Figure 31. Gain and Phase vs Frequency
100
98
96
94
92
90
88
86
84
82
80
0
V_IN (V)
14
12
8
V_IN = 14V
V_IN = 12 V
V_IN = 8 V
0.5
1.0
1.5
2.0
2.5
I_LOAD – Load Current – A
V_IN = 8 V
V_OUT = 24 V
I_OUT = 2 A
GDRV
(5 V/ div)
FET Vds
(20 V/ div)
T – Time – 400 ns
Figure 32. FET VDS and VGS Voltages vs Time
6
V_IN (V)
14
5
12
8
4
3
V_IN = 8 V
V_IN = 12 V
2
V_IN = 14 V
1
0
0
0.5
1.0
1.5
2.0
2.5
I_LOAD – Load Current – A
Figure 33. Efficiency vs Load Current
Figure 34. Power Loss vs Load Current
24.820
24.772
24.724
24.676
24.628
24.580
24.532
24.484
24.436
24.388
24.340
0
V_IN (V)
14
12
8
V_IN = 8 V
V_IN = 14 V
V_IN = 12 V
0.5
1.0
1.5
2.0
2.5
I_LOAD – Load Current – A
Figure 35. Output Voltage vs Load Current
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