TELEFUNKEN Semiconductors
U209B3/ U209B3–FP
Phase Control Circuit – Tacho Applications
Description:
The integrated circuit U209B3, is designed as a phase
control circuit in bipolar technology. It has also protection
circuit for the supply. Due to integration of many
functions, it leads to significant cost and space saving as
well as increased reliability. At the same time, it gives the
designer free hand to select varieties of regulators to
choose from and switching characteristics according to its
choice.
Features
D
Internal frequency to voltage converter
D
Externally controlled integrated amplifier
D
Automatic soft start with minimised ”dead time”
D
Voltage and current synchronisation
D
Retriggering
D
Triggering pulse typ. 155 mA
D
Internal supply voltage monitoring
D
Temperature compensated reference source
D
Current requirement
≤
3 mA
Package:
DIP14, SO16
14(16)
Voltage / Current
detector
1(1)
Automatic
retriggering
Output
pulse
4(4)
5(5)
Control
amplifier
6(6)
10(10)
+
9(9)
–
Phase
control unit
ö
= f (V
12
)
3(3)
Supply
voltage
limitation
Reference
voltage
Voltage
monitoring
2(2)
–V
S
GND
13(15)
Soft start
s
11(11)
12(12)
Frequency
to voltage
converter
8(8)
7(7)
95 10691
Figure 1. Block diagram – SO 16 in bracket
Rev. A1: 01.09.1995
Preliminary Information
1 (15)
TEMIC [ TEMIC SEMICONDUCTORS ]
