U2010B_10 Datasheet, PDF (1/18 Pages) ATMEL Corporation – Programmable Load-current Limitation with Over- and High-load Output

Features
• Full-wave Current Sensing
• Mains Supply Variation Compensated
• Programmable Load-current Limitation with Over- and High-load Output
• Variable Soft Start
• Voltage and Current Synchronization
• Automatic Retriggering Switchable
• Triggering Pulse Typically 125 mA
• Internal Supply-voltage Monitoring
• Current Requirement ≤ 3 mA
• Temperature-compensated Reference Voltage
Applications
• Advanced Motor Control
• Grinder
• Drilling Machine
1. Description
The U2010B is designed as a phase-control circuit in bipolar technology for motor
control applications with load-current feedback and overload protection. It enables
load-current detection and has a soft-start function as well as reference voltage
output.
Figure 1-1. Block Diagram
Limiting
detector
15
Voltage
detector
14
13
Overload
Mains voltage
compensation
12
High load
11
Supply ¹⁰
voltage _GND
Phase-control
IC with Current
Feedback and
Overload
Protection
U2010B
Automatic
retriggering
Current
detector
16
1
Load
current
detector
2
Phase
Output
control unit
-
12
ϕ = f(V₄)
Full wave
rectifier
Level
shift
3
4
5
100% 70%
A
α_max
B₉
Programmable Auto-
+
overload
start
protection
C
I_max
Voltage
monitoring
U2010B
Soft
start
Reference
voltage
6
7
8
4766C–INDCO–04/10