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PDF U210B Data sheet ( Hoja de datos )
| Número de pieza | U210B | |
| Descripción | Phase Control Circuit - Load Current Feedback Applications | |
| Fabricantes | TEMIC Semiconductors | |
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TELEFUNKEN Semiconductors
U 210 B / U 210 B–FP
Phase Control Circuit – Load Current Feedback Applications
Technology: Bipolar
Features
D Externally controlled integrated amplifier
D Variable soft start
D Automatic retriggering
D Voltage and current synchronisation
Case: DIP 14, SO 16
D Triggering pulse typ. 125 mA
D Internal supply voltage monitoring
D Temperature constant reference source
D Current requirement ≤ 3 mA
Figure 1 Block diagram
Preliminary Information
1
1 page  
TELEFUNKEN Semiconductors
U 210 B / U 210 B–FP
General hints and explanation of terms
To ensure safe and trouble–free operation, the following points should be taken into consideration when circuits are being
constructed or in the design of printed boards.
D The connecting lines from C2 to Pin 6 and Pin 2 should
be as short as possible, and the connection to Pin 2
should not carry any additional high current such as the
load current. When selecting C2, a low temperature
coefficient is desirable.
Figure 5 Explanation of terms in phase relationship
Preliminary Information
5
5 Page 
TELEFUNKEN Semiconductors
U 210 B / U 210 B–FP
Design calculations
The following equations can be used for the evaluation
of the series resistor R1 for worst case conditions:
R1max = 0.9 @
VMmin – VSmax
2 Itot
R1min = VMmax – VSmin
2 ISmax
P (R1max) = (VMmax – VSmin)2
2 R1
where:
VM= Mains voltage 220 V
Vs = Supply voltage on Pin 4
Itot = Total DC current requirement of the circuit
= ISmax + Ip + Ix
ISmax = Current requirement of the IC in mA
Ip = Average current requirement of the triggering pulses
Ix = Current requirement of other peripheral components
R1 can be easily evaluated from Figures 12 – 14
Preliminary Information
11
11 Page | ||
| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet U210B.PDF ] | |
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