L6562
Figure 14. Vcs clamp vs. T
j
V
CSx
2
(V)
Figure 17. ZCD source capability vs. T
j
I
ZCDsrc
0
(mA)
Vcc = 12 V
V
ZCD
= lower clamp
1.8
-2
1.6
-4
1.4
1.2
1
-50
Vcc = 12 V
V
COMP
= Upper clamp
-6
0
50
Tj (°C)
100
150
-8
-50
0
50
Tj (°C)
100
150
Figure 15. Start-up timer vs. T
j
Tstart
150
(µs)
140
Figure 18. Gate-drive output low saturation
V
pin7
[V]
4
Tj = 25 °C
Vcc = 11 V
SINK
Vcc = 12 V
3
130
2
120
110
1
100
-50
0
0
50
100
150
0
200
400
600
800
1,000
Tj (°C)
I
GD
[mA]
Figure 16. ZCD clamp levels vs. T
j
V
ZCD
(V)
Figure 19. Gate-drive output high saturation
V
pin7
[V]
-1.5
7
6
5
4
Upper clamp
-2
Vcc - 2.0
Vcc = 12 V
I
ZCD
= ±2.5 mA
Tj = 25 °C
Vcc = 11 V
SOURCE
Vcc -
-2.5
2.5
-3
Vcc - 3.0
3
2
1
0
-50
0
50
Tj (°C)
Lower clamp
Vcc -
-3.5
3.5
-4
Vcc - 4.0
-4.5
0
100
200
300
400
500
600
700
100
150
I
GD
[mA]
7/16
STMICROELECTRONICS [ STMICROELECTRONICS ]
