SI824XCLASSD-KIT Silicon Laboratories Inc, SI824XCLASSD-KIT Datasheet - Page 22
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SI824XCLASSD-KIT
Manufacturer Part Number
SI824XCLASSD-KIT
Description
BOARD EVAL FOR SI824X
Manufacturer
Silicon Laboratories Inc
Datasheet
1.SI8241CB-B-IS1.pdf
(30 pages)
Specifications of SI824XCLASSD-KIT
New! Us2012 Catalog Page
Class-D Audio Driver_Precision Clock ICs
Board Type
Fully Populated
Amplifier Type
Class D
Output Type
2-Channel (Stereo)
Max Output Power X Channels @ Load
120W x 2 @ 8 Ohm
Utilized Ic / Part
Si824x
Description/function
Audio Amplifiers
Operating Supply Voltage
12 V
Output Power
30 W to 1000 W
Product
Audio Development Tools
Supply Current
500 mA
For Use With/related Products
Si824x
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Voltage - Supply
-
Operating Temperature
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
336-2002
Si824x
3.8. Programmable Dead Time and Overlap Protection
All high-side/low-side drivers (Si8241/4) include programmable overlap protection to prevent outputs VOA and
VOB from being high at the same time. These devices also include programmable dead time, which adds a user-
programmable delay between transitions of VOA and VOB. When enabled, dead time is present on all transitions,
even after overlap recovery. The amount of dead time delay (DT) is programmed by a single resistor (RDT)
connected from the DT input to ground per Equation 5. Minimum dead time (approximately 400 ps) can be
achieved by connecting the DT pin to VDDI. Note that dead time accuracy is limited by the resistor’s (R
tolerance and temperature coefficient. See Figures 36 and 37 for additional information about dead time operation.
22
Figure 36. Dead Time vs.Resistance (R
100
Figure 37. Dead Time vs.Temperature
1000
DT 10 RDT
where:
DT
and
RDT
90
80
70
60
50
40
30
20
10
900
800
700
600
500
400
300
200
100
0
0
-40
=
0
=
dead time (ns)
dead time programming resistor (k
-20
20
0
Dead-time Resistance (k: : )
Equation 5.
20
Temperature (°C)
Rev. 0.2
40
40
60
60
R
R
R
R
R
R
R
R
DT
DT
DT
DT
DT
DT
DT
DT
= 4k
= 3
= 2
= 1
= 5k
= 0
= 10k
= 6k
80
k
k
k
80
100
120
DT
100
)
DT
)