TDA8932B Datasheet, PDF (35/48 Pages) NXP Semiconductors – Class-D audio amplifier

NXP Semiconductors
TDA8932B
Class-D audio amplifier
32
P_o
(W)
(3)
24
(2)
16
(1)
001aaf896
8
0
0
120
240
360
480
600
t (s)
a. R_L = 4 Ω; f_i = 1 kHz; 2 layer SO32 application
board (55 mm × 45 mm) without heat sink
(1) V_P = 12 V
(2) V_P = 13.5 V
(3) V_P = 15 V
Fig 32. Output power as a function of time
60
P_o
(W)
50
(3)
40
(2)
001aaf899
30
(1)
20
10
0
0
120
240
360
480
600
t (s)
b. R_L = 8 Ω; f_i = 1 kHz; 2 layer SO32 application
board (55 mm × 45 mm) without heat sink
(1) V_P = 22 V
(2) V_P = 26 V
(3) V_P = 29 V
100
η_po
(%)
(1)
80
(2)
60
001aae119
40
20
0
0
10
20
30
P_o (W)
f_i = 1 kHz; η_PO = ₍---_P----_o-^P---₊-^o----_p---₎-
(1) V_P = 12 V; R_L = 4 Ω
(2) V_P = 22 V; R_L = 8 Ω
Fig 33. Output power efficiency as a function of
output power
3.0
P
(W)
2.0
001aae120
(2)
1.0
(1)
0
10^−2
10^−1
1
10
10²
P_o (W)
f_i = 1 kHz; power dissipation in junction only
(1) V_P = 12 V; R_L = 4 Ω
(2) V_P = 22 V; R_L = 8 Ω
Fig 34. Power dissipation as a function of output
power
TDA8932B_4
Product data sheet
Rev. 04 — 18 December 2008
© NXP B.V. 2008. All rights reserved.
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