TPS54560
www.ti.com
SLVSBN0 –MARCH 2013
TYPICAL CHARACTERISTICS (continued)
SWITCHING FREQUENCY vs RT/CLK RESISTANCE
LOW FREQUENCY RANGE
EA TRANSCONDUCTANCE vs JUNCTION TEMPERATURE
500
2500
2300
2100
1900
1700
1500
1300
1100
900
V
= 12 V
Series2
IN
450
400
350
300
250
200
700
500
0
50
100
150
200
œ50
œ25
0
25
50
75
100
125
150
C031
C032
RT/CLK - Resistance (kꢀ)
Figure 7.
TJ - Junction Temperature (°C)
Figure 8.
EA TRANSCONDUCTANCE DURING SOFT-START vs
JUNCTION TEMPERATURE
EN PIN VOLTAGE vs JUNCTION TEMPERATURE
120
110
100
90
1.3
1.29
1.28
1.27
1.26
1.25
1.24
1.23
1.22
1.21
1.2
1.19
1.18
1.17
1.16
1.15
V
= 12 V
Series2
VINS=er1ie2s2V
IN
80
70
60
50
40
30
20
œ50
œ25
0
25
50
75
100
125
150
œ50
œ25
0
25
50
75
100
125
150
C033
C034
TJ - Junction Temperature (°C)
TJ - Junction Temperature (°C)
Figure 9.
Figure 10.
EN PIN CURRENT vs JUNCTION TEMPERATURE
EN PIN CURRENT vs JUNCTION TEMPERATURE
œ3.5
œ3.7
œ3.9
œ4.1
œ4.3
œ4.5
œ4.7
œ4.9
œ5.1
œ5.3
œ5.5
œ0.5
œ0.7
œ0.9
œ1.1
œ1.3
œ1.5
œ1.7
œ1.9
œ2.1
œ2.3
œ2.5
VIN = 12 V,
IEN = Threshold + 50 mV
VIN = 12V,
Series2
IEN = Threshold œ50 mV
œ50
œ25
0
25
50
75
100
125
150
œ50
œ25
0
25
50
75
100
125
150
C035
C036
TJ - Junction Temperature (°C)
TJ - Junction Temperature (°C)
Figure 11.
Figure 12.
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