TPS53515_15 Datasheet, PDF (8/39 Pages) Texas Instruments – TPS53515 1.5-V to 18-V (4.5-V to 25-V Bias) Input, 12-A Single Synchronous Step-Down SWIFT™ Converter

TPS53515
SLUSBN5B – AUGUST 2013 – REVISED JULY 2015
6.6 Typical Characteristics
100
90
80
f_SW = 500 KHz, V_IN = 12 V, V_DD = 5 V
T_A = 25°C, L _OUT = 1 H, Mode = Auto-skip
70
Vo_OUu_Tt = 0.6 V
V_Oo_Uu_Tt = 1 V
Vo_OUu_Tt = 1.2 V
V_Oo_Uu_Tt = 1.5 V
Vo_OUu_Tt = 1.8 V
V_Oo_Uu_Tt = 2.5 V
60
VoOUuTt = 3.3 V
V_OoUuTt = 5 V
0
2
4
6
8
10
12
Output Current (A)
C003
Figure 1. Efficiency vs. Output Current
100
90
80
70
60
50
0
f_SW = 1 MHz, V_IN = 12 V, V_DD = 5 V
T_A = 25°C, L _OUT = 1 H, Mode = Auto-Skip
V_Oo_Uu_Tt = 0.6 V
V_Oo_Uu_Tt = 1.2 V
V_Oo_Uu_Tt = 1.8 V
VV_OoUuTt == 33..33 VV
VV_Oo_Uu_Tt = 11 V
VV_Oo_Uu_Tt = 11..55 V
VV_Oo_Uu_Tt = 22..55 V
VV_OoUuTt == 55 VV
2
4
6
8
10
12
Output Current (A)
C005
Figure 3. Efficiency vs. Output Current
1.3
1.25
f_SW = 500 KHz
V_DD = 5 V
V_OUT = 1.2 V
T_A = 25°C
L_OUT = 1 H
Mode = Auto-skip
1.2
1.15
V_II_NN==55VV
V_II_NN==1122VV
1.1
V_II_NN==1188VV
0
2
4
6
8
10
12
Output Current (A)
C007
Figure 5. Output Voltage vs. Output Current
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100
90
80
f_SW = 500 KHz, V_IN = 12 V, V_DD = 5 V
T_A = 25°C, L _OUT = 1 H, Mode = FCCM
70
Vo_OUu_Tt = 0.6 V
V_Oo_Uu_Tt = 1 V
Vo_OUu_Tt = 1.2 V
V_Oo_Uu_Tt = 1.5 V
Vo_OUu_Tt = 1.8 V
V_Oo_Uu_Tt = 2.5 V
60
VoOUuTt = 3.3 V
V_OoUuTt = 5 V
0
2
4
6
8
10
12
Output Current (A)
C004
Figure 2. Efficiency vs. Output Current
100
90
80
70
60
50
0
f_SW = 1 MHz, V_IN = 12 V, V_DD = 5 V
T_A = 25°C, L _OUT = 1 H, Mode = FCCM
V_Oo_Uu_Tt = 0.6 V
V_Oo_Uu_Tt = 1.2 V
V_Oo_Uu_Tt = 1.8 V
VV_OoUuTt == 33..33 VV
VV_Oo_Uu_Tt = 11 V
VV_Oo_Uu_Tt = 11..55 V
VV_Oo_Uu_Tt = 22..55 V
VV_OoUuTt == 55 VV
2
4
6
8
10
12
Output Current (A)
C006
Figure 4. Efficiency vs. Output Current
1.3
1.25
f_SW = 1 MHz
V_DD = 5 V
V_OUT = 1.2 V
T_A = 25°C
L_OUT = 1 H
Mode = Auto-skip
1.2
1.15
V_II_NN==55VV
V_II_NN==1122VV
1.1
V_II_NN==1188VV
0
2
4
6
8
10
12
Output Current (A)
C008
Figure 6. Output Voltage vs. Output Current
8
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