Philips TDA8928J - Manual (Page 10)

2004 May 05 10
Philips Semiconductors Preliminary specification
Power stage 2 x 10 or 1 x 20 W class-D
audio amplifier
TDA8928J
14 SWITCHING CHARACTERISTICS
V
P
=
±
12.5 V; T
amb
= 25
°
C; measured in Fig.4; unless otherwise specified.
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
PWM outputs (pins OUT1 and OUT2); see Fig.3
t
r
rise time
−
30
−
ns
t
f
fall time
−
30
−
ns
t
blank
blanking time
−
70
−
ns
t
PD
propagation delay from pin SW1 (SW2) to
pin OUT1 (OUT2)
−
200
−
ns
t
W(min)
minimum pulse width
−
220 270 ns
R
ds(on)
on-resistance of the output
transistors
−
0.2 0.4
Ω
handbook, full pagewidth
MGW145
PWM
output
(V)
VDD
VSS
0 V
tblank tf tr
1/fosc
100 ns
VSTAB
VSS
VSW
(V)
tPD
VSTAB
VSS
VREL
(V)
Fig.3 Timing diagram PWM output, switch and release signals.