TDA1563Q 데이터 시트보기 (PDF) - Philips Electronics
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TDA1563Q Datasheet PDF : 32 Pages
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Philips Semiconductors
2 × 25 W high efficiency car radio power
amplifier
Product specification
TDA1563Q
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134).
SYMBOL
PARAMETER
VP
supply voltage
VP(sc)
Vrp
IORM
Ptot
Tstg
Tvj
Tamb
short-circuit safe voltage
reverse polarity voltage
repetitive peak output current
total power dissipation
storage temperature
virtual junction temperature
ambient temperature
CONDITIONS
operating
non-operating
load dump; tr > 2.5 ms
MIN.
−
−
−
−
−
−
−
−55
−
−40
MAX.
18
30
45
18
6
4
60
+150
150
−
UNIT
V
V
V
V
V
A
W
°C
°C
°C
THERMAL CHARACTERISTICS
SYMBOL
PARAMETER
CONDITIONS
Rth(j-c)
Rth(j-a)
thermal resistance from junction to case
thermal resistance from junction to ambient
see note 1
Note
1. The value of Rth(c-h) depends on the application (see Fig.3).
VALUE
1.3
40
UNIT
K/W
K/W
Heatsink design
There are two parameters that determine the size of the
heatsink. The first is the rating for the virtual junction
temperature and the second is the ambient temperature at
which the amplifier must still deliver its full power in the
BTL mode.
With a conventional BTL amplifier, the maximum power
dissipation with a music-like signal (at each amplifier) will
be approximately two times 6.5 W.
At a virtual junction temperature of 150 °C and a maximum
ambient temperature of 65 °C, Rth(vj-c) = 1.3 K/W and
Rth(c-h) = 0.2 K/W, the thermal resistance of the heatsink
should be: -1--2-5---0-×----–-6---.-6-5--5-- – 1.3 – 0.2 = 5 K/W
Compared to a conventional BTL amplifier, the TDA1563Q
has a higher efficiency. The thermal resistance of the
heatsink should be: 1.7-1--2-4---5-×----–-6---.-6-5--5-- – 1.3 – 0.2 = 9 K/W
handbook, halfpage
OUT 1
virtual junction
OUT 1
OUT 2
OUT 2
3.6 K/W
3.6 K/W
3.6 K/W
3.6 K/W
0.6 K/W
0.6 K/W
0.1 K/W
MGC424
case
Fig.3 Thermal equivalent resistance network.
2000 Feb 09
6
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