TDA8927 Philips Semiconductors, TDA8927 Datasheet - Page 28

• Manufacturer Part Number: TDA8927
• Description: Power stage 2 x 80 W class-D audio amplifier
• Manufacturer: Philips Semiconductors

Philips Semiconductors
2001 Dec 11
handbook, halfpage
handbook, halfpage
Power stage 2
audio amplifier
V
(1) 1
(2) 1
Fig.31 Supply voltage ripple as a function of output
V
(1) 10 kHz.
(2) 1 kHz.
(3) 100 Hz.
THD N
V ripple
Fig.33 THD + N as a function of clock frequency.
P
P
(%)
(V)
= 25 V; 1500 F per supply line; f
= 25 V; P
10
10
10
10
5
4
3
2
1
0
1
10
1
2
3
100
4
8
power.
2
SE.
SE.
o
= 1 W in 2
200
10
1
300
8 :
80 W class-D
1
400
i
= 10 Hz:
10
(1)
(2)
500
P o (W)
f clk (kHz)
(1)
(2)
(3)
MLD621
MLD623
10
600
2
28
handbook, halfpage
handbook, halfpage
V
(1) P
(2) P
V
Fig.34 Output power as a function of clock
SVRR
P
P
(%)
Fig.32 SVRR as a function of input frequency.
= 25 V; 1500 F per supply line:
= 25 V; R
(W)
P o
50
40
30
20
10
o
o
5
4
3
2
1
0
0
100
10
= 30 W into 1
= 15 W into 1
(1)
(2)
frequency.
L
= 2
200
8 ; f
4
8
10
2
i
SE.
SE.
300
= 1 kHz; THD + N = 10%.
400
10
Objective specification
3
500
f i (Hz)
TDA8927
f clk (kHz)
MLD622
MLD624
600
10
4