2002 Jan 14
23
Philips Semiconductors
Preliminary specification
4
×
44 W into 4
Ω
or 4
×
75 W into 2
Ω
quad BTL car radio power amplifier
TDA8591J
13.1
Protection circuit testing
handbook, full pagewidth
MGW453
4700
µ
F
>
100
µ
H
TDA8591J
(1)
battery
14.4 V
OUT
−
−
+
OUT
+
IN
STBY
GND
VP
Fig.30 Open ground pin test set-up.
One channel output shown.
At the start of the test, the 4700
µ
F capacitor should be discharged.
The amplifier is in standby during test.
(1) Cable length is 1 metre, cable diameter is 1.5 mm.
handbook, full pagewidth
MGW454
4700
µ
F
>
100
µ
H
TDA8591J
(1)
battery
14.4 V
OUT
−
−
+
OUT
+
IN
STBY
GND
VP
One channel output shown.
At the start of the test, the 4700
µ
F capacitor should be discharged.
The amplifier is in standby during test.
(1) Cable length is 1 metre, cable diameter is 1.5 mm.
Fig.31 Open power supply (pin V
P
) test set-up.
