L5991AD13TR Datasheet, PDF (7/23 Pages) STMicroelectronics – PRIMARY CONTROLLER WITH STANDBY

Figure 15. Switching frequency vs. tempera-
ture.
fsw (KHz)
320
Rt= 4.5Kohm, Ct = 1nF
310
Vcc = 15V, V15=Vref
300
L5991 - L5991A
Figure 16. Switching frequency vs. temperature.
fsw (KHz)
320
310
Rt= 4.5Kohm, Ct = 1nF
Vcc = 15V, V15= 0
300
290
290
280
-50 -25 0
25 50 75
Tj (°C)
100 125 150
Figure 17. Dead time vs Ct.
Dead time [ns]
1,500
1,200
900
600
300
Rt =4.5Kohm
V15 = 0V
V15 = Vref
2
4
6
8
10
Timing capacitor Ct [nF]
Figure 19. Delay to output vs junction temperature.
280
-50 -25 0 25 50 75 100 125 150
Tj (°C)
Figure 18. Maximum Duty Cycle vs Vpin3.
DC Control Voltage Vpin3 [V]
3.5
V15 = Vref
3
V15 = 0V
2.5
2
Rt = 4.5Kohm,
1.5
Ct = 1nF
1
0 10 20 30 40 50 60 70 80 90 100
Duty Cycle [%]
Figure 20. E/A frequency response.
Delay to output (ns)
42
40
G [dB]
150
Phase
140
120
38
100
100
36
80
34
50
60
32
PIN10 = OPEN
30
1V pulse
0
on PIN13
40
28
-50 -25
0
25 50 75 100 125 150
Tj (°C)
20
0.01 0.1
1
10 100 1000 10000 100000
f (KHz)
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