TDA8927 Datasheet, PDF (28/36 Pages) NXP Semiconductors – Power stage 2 x 80 W class-D audio amplifier

Philips Semiconductors
Power stage 2 × 80 W class-D
audio amplifier
Objective specification
TDA8927
5
handb_Vo_ro_ipk,_ph_lealfpage
(V)
4
MLD621
3
(1)
2
1
(2)
010_−2
10^−1
1
10
10²
Po (W)
V_P = ±25 V; 1500 µF per supply line; f_i = 10 Hz:
(1) 1 × 4 Ω SE.
(2) 1 × 8 Ω SE.
Fig.31 Supply voltage ripple as a function of output
power.
5
handbook, halfpage
SVRR
(%)
4
3
(1)
2
1
(2)
0
10
10²
MLD622
10³
10⁴
fi (Hz)
V_P = ±25 V; 1500 µF per supply line:
(1) P_o = 30 W into 1 × 4 Ω SE.
(2) P_o = 15 W into 1 × 8 Ω SE.
Fig.32 SVRR as a function of input frequency.
10
handbook, halfpage
THD+N
(%)
1
10^−1
10^−2
MLD623
(1)
(2)
(3)
10^−3
100
200
300
400
500
600
fclk (kHz)
V_P = ±25 V; P_o = 1 W in 2 × 8 Ω:
(1) 10 kHz.
(2) 1 kHz.
(3) 100 Hz.
Fig.33 THD + N as a function of clock frequency.
handbook,⁵h⁰alfpage
Po
(W)
40
MLD624
30
20
10
0
100
200
300
400
500
600
fclk (kHz)
V_P = ±25 V; R_L = 2 × 8 Ω; f_i = 1 kHz; THD + N = 10%.
Fig.34 Output power as a function of clock
frequency.
2001 Dec 11
28