L5991(1999) Ver la hoja de datos (PDF) - STMicroelectronics
Número de pieza
componentes Descripción
Fabricante
L5991 Datasheet PDF : 19 Pages
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Figure 15. Switching frequency vs. temperature.
L5991 - L5991A
Figure 16. Dead time vs Ct.
fsw (KHz)
320
310
Rt= 4.5Kohm, Ct = 1nF
Vcc = 15V, V15= 0
Dead time [ns]
1,500
1,200
Rt =4.5Kohm
V15 = 0V
300
290
280
-50 -25 0
25 50 75 100 125 150
Tj (°C)
Figure 17. Maximum Duty Cycle vs Vpin3.
900
V15 = Vref
600
300
2
4
6
8
10
Timing capacitor Ct [nF]
Figure18.Delayto outputvs junctiontemperature.
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 19. E/A frequency response.
Delay to output (ns)
42
40
38
36
34
32
PIN10 = OPEN
1V pulse
30
on PIN13
28
-50 -25
0
25 50 75 100 125 150
Tj (°C)
G [dB]
150
Phase
140
120
100
100
80
50
60
0
40
20
0.01 0.1
1
10 100 1000 10000 100000
f (KHz)
7/23
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