U211B2/ B3
Phase Control Circuit - General Purpose Feedback
Description
The integrated circuit U211B2/ B3 is designed as a phase
control circuit in bipolar technology with an internal fre-
quency-voltage converter. Furthermore, it has an internal
control amplifier which means it can be used for speed-
regulated motor applications.
It has an integrated load limitation, tacho monitoring and
soft-start functions, etc. to realize sophisticated motor
control systems.
Features
D
D
D
D
D
D
Internal frequency-to-voltage converter
Externally-controlled integrated amplifier
Overload limitation with a “fold back” characteristic
Optimized soft-start function
Tacho monitoring for shorted and open loop
Automatic retriggering switchable
17(16)
1(1)
D
D
D
D
D
Triggering pulse typ. 155 mA
Voltage and current synchronization
Internal supply-voltage monitoring
Temperature reference source
Current requirement
≤
3 mA
DIP18 - U211B2,
SO16 - U211B3
Package:
5*)
Automatic
retriggering
Output
pulse
4(4)
Voltage / Current
detector
11(10)
+
10(9)
–
Control
amplifier
6(5)
7(6)
Phase
control unit
ö
= f (V
12
)
3(3)
Supply
voltage
limitation
Reference
voltage
Voltage
monitoring
2(2)
–V
S
GND
14(13)
15(14)
Load limitation
speed / time
controlled
16(15)
controlled
current sink
–V
Ref
12(11)
Soft start
Frequency-
to-voltage
converter
9(8)
8(7)
Pulse-blocking
tacho
monitoring
18*)
13(12)
95 10360
Figure 1. Block diagram (Pins in brackets refer to SO16)
*) Pins 5 and 18 connected internally
TELEFUNKEN Semiconductors
Rev. A1, 29-May-96
1 (20)
TEMIC [ TEMIC SEMICONDUCTORS ]
