TDA8924 Datasheet, PDF (24/35 Pages) NXP Semiconductors – 2 x 120 W class-D power amplifier

Philips Semiconductors
2 × 120 W class-D power amplifier
Objective specification
TDA8924
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η
(%)
80
MDB547
(1)
(2)
(3)
(4)
60
40
20
0
0
50
100
Po (W) ¹⁵⁰
2 × 2 Ω SE; 10 µH; 1 µF.
(1) V_P = ±20 V.
(2) V_P = ±22 V.
(3) V_P = ±24 V.
(4) V_P = ±25 V.
Fig.17 Efficiency as a function of output power.
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η
(%)
80
MDB549
(1)
(2)
(3)
60
40
20
0
0
100
200
Po (W) ³⁰⁰
1 × 4 Ω BTL; 2 × 10 µH; 2 × 1 µF.
(1) V_P = ±20 V.
(2) V_P = ±24 V.
(3) V_P = ±25 V.
Fig.18 Efficiency as a function of output power.
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(W)
250
MDB553
(1)
200
150
(2)
100
50
0
0
10
20
30
VDD (V)
THD + N = 10 %; f_i = 1 kHz.
(1) 1 × 4 Ω BTL.
(2) 2 × 2 Ω SE.
Fig.19 Output power as a function of supply
voltage.
2003 Jul 28
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Po
(W)
200
MDB552
(1)
150
(2)
100
50
0
0
10
20 _{VDD (V)} 30
THD + N = 0.5 %; f_i = 1 kHz.
(1) 1 × 4 Ω BTL.
(2) 2 × 2 Ω SE.
Fig.20 Output power as a function of supply
voltage.
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