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 frequency-voltage converter. Furthermore, it has an internal control amplifier which means it can be used for speedregulated 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 (V12)
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 –VRef 12(11)
Soft start
Frequencyto-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)
U211B2/ B3
2 (20)
1N4007 D1 R1 M L 18 kW 2W R3 220 k W R4 470 k W 1 Automatic retriggering Output pulse 180 W 6 7 10 – 3 R2 1 MW R8 33 m W 1W 3. 3 nF C2 2 –V S C1 GND C 11 Reference voltage Voltage monitoring 16 4 R 12 TIC 226 5 VM = 230 V ~ 17 Voltage / Current detector 11 + Control amplifier
47 k W
R13
R 31 100 kW
Set speed voltage
R14 56 k W
R19 100 k W
C 10
2. 2 m F /16V
Phase control unit ö = f (V12 )
Supply voltage limitation
R 10 1...
U211B3 PDF File
