TDA2030 데이터 시트보기 (PDF) - Unisonic Technologies
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TDA2030 Datasheet PDF : 13 Pages
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UTCTDA2030 LINEAR INTEGRATED CIRCUIT
It is essential to take into account all the working conditions, in particular mains fluctuations and supply voltage
variations with and without load. The UTC2030(Vsmax=44V) is particularly suitable for substitution of the standard
IC power amplifiers(with Vsmax=36V) for more reliable applications.
An example, using a simple full-wave rectifier followed by a capacitor filter, is shown in the table and in the diagram
of Fig.27.
A regulated supply is not usually used for the power output stages because of its dimensioning must be done
taking into account the power to supply in signal peaks. They are not only a small percentage of the total music
signal, with consequently large overdimensioning of the circuit.
Even if with a regulated supply higher output power can be obtained(Vs is constant in all working conditions),the
additional cost and power dissipation do not usually justify its use. using non-regulated supplies, there are fewer
designee restriction. In fact, when signal peaks are present, the capacitor filter acts as a flywheel supplying the
required energy.
In average conditions, the continuous power supplied is lower. The music power/continuous power ratio is greater
in case than for the case of regulated supplied, with space saving and cost reduction.
Vo(V)
36
34
32
30
28
Fig.27 DC characteristics of
50W non-regulated supply
Ripple
(Vp-p)
Ripple
4
220V
2
Vout
0
0
0.4
0.8
1.2 1.6
2.0
Io(A)
Vo
3300 µF
Mains(220V)
+20%
+15%
+10%
—
-10%
-15%
-20%
Secondary Voltage
28.8V
27.6V
26.4V
24V
21.6V
20.4V
19.2V
Io=0
43.2V
41.4V
39.6V
36.2V
32.4V
30.6V
28.8V
DC Output Voltage(Vo)
Io=0.1A
42V
40.3V
38.5V
35V
31.5V
29.8V
28V
Io=1A
37.5V
35.8V
34.2V
31V
27.8V
26V
24.3
UTC
UNISONIC TECHNOLOGIES CO., LTD. 12
QW-R107-004,A
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