TPS40170-Q1_15 Datasheet, PDF (8/51 Pages) Texas Instruments – TPS40170-Q1 4.5-V to 60-V, Wide-Input, Synchronous PWM Buck Controller

TPS40170-Q1
SLVSB90B – JANUARY 2012 – REVISED DECEMBER 2014
6.6 Typical Characteristics
600.0
599.8
599.5
599.2
599.0
598.8
598.5
−40 −25 −10 5
20 35 50 65 80 95 110 125
Temperature (°C)
Figure 1. Reference Voltage vs Junction Temperature
302
300
298
296
294
292
290
288
286
284
282 _{fSW= 300 kHz}
280
−40 −25 −10 5
20 35 50 65 80
Junction Temperature (°C)
V_IN = 4.5 V
V_IN = 24 V
V_IN = 60 V
95 110 125
Figure 3. Switching Frequency vs Junction Temperature
1.4
1.3
1.2
1.1
1.0
0.9
−40 −25 −10 5
V_IN = 12 V
20 35 50 65 80 95 110 125
Temperature (°C)
Figure 5. Shutdown Current vs Junction Temperature
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100.0
99.5
99.0
V_IN = 4.5 V
V_IN = 24 V
V_IN = 60 V
98.5
98.0
97.5
97.0
96.5
96.0
95.5 _{fSW= 100 kHz}
95.0
−40 −25 −10 5
20 35 50 65 80
Junction Temperature (°C)
95 110 125
Figure 2. Switching Frequency vs Junction Temperature
606
602
598
594
590
586
582
578
574
570
566
562
558 _{fSW= 600 kHz}
554
−40 −25 −10 5
20 35 50 65 80
Junction Temperature (°C)
V_IN = 4.5 V
V_IN = 24 V
V_IN = 60 V
95 110 125
Figure 4. Switching Frequency vs Junction Temperature
3.28
3.26
3.24
3.22
3.20
3.18
3.16
3.14
3.12
3.10
−40 −25 −10
V_IN = 12 V
f_SW = 300 kHz
5 20 35 50 65 80 95 110 125
Junction Temperature (°C)
Figure 6. Operating Current vs Junction Temperature
8
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