NXP Semiconductors TDA8932B voltage, =, -------------------------, , per channel (two channels driven), 2P, 2P

TDA8932B_3 © NXP B.V. 21 June 2007. All rights reserved.
Product data sheet Rev. 03— 21 June 2007 31 of 48
NXP Semiconductors TDA8932B
Class-D audio amplifier
fi= 1 kHz (short time PO); dashed line will require
heat sink for continuous time output power
(1) RL=2×4Ω; THD+N = 10 %
(2) RL=2×4Ω; THD+N = 0.5 %
(3) RL=2×8Ω; THD+N = 10 %
(4) RL=2×8Ω; THD+N = 0.5 %
fi= 1 kHz; power dissipation in junction only; short
time Po at THD+N = 10 %; dashed line will require
heat sink for continuous time output power
(1) RL=2×4Ω
(2) RL=2×8Ω
Fig 19. Output power per channel as a function of
supply voltage Fig 20. Power dissipation as a function of supply voltage
VP (V)
10 3830 3414 18 22 26
001aaf886
16
8
24
32
Po
(W/channel)
0
(4)
(1)
(2)
(3)
VP (V)
10 383414 18 22 26 30
001aaf889
2
4
6
P
(W)
0
(2)
(1)
fi= 1 kHz;
(1) VP= 22 V; RL=2×4Ω
(2) VP= 30 V; RL=2×8Ω
fi= 1 kHz; power dissipation in junction only
(1) VP=22V; R
L=2×4Ω
(2) VP=30V; R
L=2×8Ω
Fig 21. Output power efficiency as a function of output
power per channel Fig 22. Power dissipation as a function of output power per channel (two channels driven)
Po (W/channel)
02015510
001aad780
40
60
20
80
100
ηpo
(%)
0
(2)
(1)
001aad781
1.0
2.0
3.0
P
(W)
0
Po (W/channel)
10−2102
1010−11
(2)
(1)
ηPO
2P
o
×
2P
op+×
-------------------------
=