U210B Temic Semiconductors (acquired by ATMEL Corporation), U210B Datasheet - Page 11

• Manufacturer Part Number: U210B
• Description: Phase Control Circuit - Load Current Feedback Applications
• Manufacturer: Temic Semiconductors (acquired by ATMEL Corporation)

TELEFUNKEN Semiconductors
Design calculations
The following equations can be used for the evaluation
of the series resistor R
R
R
P (R
where:
V
Vs = Supply voltage on Pin 4
I
I
I
I
R
tot
Smax
p
x
1max
1min
1
M
can be easily evaluated from Figures 12 – 14
= Mains voltage 220 V
= Total DC current requirement of the circuit
= I
= Average current requirement of the triggering pulses
= Current requirement of other peripheral components
1max
= Current requirement of the IC in mA
=
Smax
= 0.9
) =
V
+ I
Mmax
(V
2 I
p
Mmax
V
+ I
Smax
Mmin
– V
2 R
x
2 I
Smin
– V
1
1
tot
– V
for worst case conditions:
Smin)
Smax
2
Preliminary Information
U 210 B / U 210 B–FP
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