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
VP=±12.5 V; Tamb=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
trrise time −30 −ns
tffall time −30 −ns
tblank blanking time −70 −ns
tPD propagation delay from pin SW1 (SW2) to
pin OUT1 (OUT2)
−200 −ns
tW(min) minimum pulse width −220 270 ns
Rds(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.