U2010B_10 Datasheet, PDF (2/18 Pages) ATMEL Corporation – Programmable Load-current Limitation with Over- and High-load Output

Figure 1-2. Block Diagram with External Circuit
230V ~
18 kΩ/2W
D1
R1
Load
R2
330 kΩ
α_max
R8
470 kΩ
Limiting
detector
15
Voltage
detector
14
13
Overload
Mains voltage
compensation
D3
LED
12
High load
V_S
11
Supply ¹⁰
voltage _GND
C1
22 µF ⁺
Automatic
retriggering
R3
16
180Ω
Current
detector
R4
1
3.3 kΩ
Load
current
detector
2
R6
V_(R6) = ± 250 mV
R5
3.3 kΩ
100% 70%
A
α_max
Mode
Phase
Output
B₉
A
Programmable Auto-
B
control unit
-
12
+
ϕ = f(V₄)
Full wave
rectifier
overload
protection
start
C
I_max
C
S1
Voltage
monitoring
U2010B
Level
shift
Soft
start
Reference
voltage
3
4
5
6
7
8
C3
10 nF
0.1 µF
C5
C4
R11
1 MΩ
+ C2
4.7 µF
Overload
threshold
0.15 µF
R14
P1
R10
50 kΩ
100 kΩ
Load current
compensation
Set point
R7
C7
+ _{1 µF}
2 U2010B
4766C–INDCO–04/10