TPS544B20 Datasheet, PDF (13/75 Pages) Texas Instruments – 4.5-V to 18-V, 20-A, and 30-A SWIFT Synchronous Buck Converters with PMBus

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TPS544B20, TPS544C20
SLUSB69B – MAY 2014 – REVISED JULY 2016
Typical Characteristics (continued)
V_IN = V_DD = 12 V, T_A = 25 ºC, R_RT = 38.3 kΩ (unless otherwise specified). Safe operating area curves were measured using a
Texas Instruments Evaluation Module.
50
4.40
45
4.35
40
35
4.30
30
4.25
25
20
±50 ±25
0 25 50 75 100 125 150
Junction Temperature (£C)
C004
Figure 7. PGOOD Pull-Down Resistance vs. Junction
Temperature
4.10
4.20
±50 ±25
VIN_ON = 4.25 V
0 25 50 75 100 125 150
Junction Temperature (£C)
C011
Figure 8. Turn-On Voltage vs. Junction Temperature
125
4.05
4.00
3.95
3.90
±50 ±25
VIN_OFF = 4.00 V
0 25 50 75 100 125 150
Junction Temperature (£C)
C012
Figure 9. Turn-Off Voltage vs. Junction Temperature
125
105
85
65
Nat. Conv
100 LFM
45
200 LFM
400 LFM
25
0
5
10
15
20
Load Current (A)
V_IN = 12 V
V_OUT = 0.9 V
25
30
C001
f_SW = 650 kHz
Figure 10. Safe Operating Area
125
105
105
85
85
65
Nat. Conv
100 LFM
45
200 LFM
400 LFM
25
0
5
10
15
20
Load Current (A)
V_IN = 12 V
V_OUT = 0.9 V
25
30
C002
f_SW = 300 kHz
Figure 11. Safe Operating Area
65
Nat. Conv
100 LFM
45
200 LFM
400 LFM
25
0
5
10
15
20
Load Current (A)
V_IN = 12 V
V_OUT =1.8 V
25
30
C003
f_SW = 650 kHz
Figure 12. Safe Operating Area
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