D2-24044 Datasheet, PDF (17/20 Pages) Intersil Corporation – Digital Audio Amplifier Power Stage

D2-24044
Typical Application Examples
These examples show functional circuit examples of
typical applications using the D2-24044 device. (Note:
These examples are provided to show typical applications
only and are not intended to represent complete
production-qualified reference designs.)
2-Channel Full Bridge Example
This example (Figure 15) uses configuration mode “01”
to provide two full-bridge loudspeaker output channels.
The PWM controller provides input into four PWM input
pins.
nPDN
Configuration “01”
2x Full Bridge Outputs
PWMVDD/+3.3
nOVRT
10k
10k
PWMIN1-HI
PWMIN1-LO
PWMIN2-HI
PWMIN2-LO
PWM Inputs From
PWM/System
Controller
Channel 1 In
Channel 2 In
(no connect)
(no connect)
(no connect)
(no connect)
For Channel 1 Output
For Channel 2 Output
nERROR Reporting to
PWM/System Controller
1
nPDN
2
OCFG1
3
OCFG0
4 _PWMGND
5 _PWMVDD
6 _nOVRT
7
PWM1
8
PWM2
9
PWM3
10
PWM4
11
PWM5
12
PWM6
13
PWM7
14 _PWM8
15 _PWMGND2
16
nERRORA
17
nERRORB
18 _nERRORC
19 _nERRORD
HVDDA ³⁸ +HV
37
HGNDA
GND
OUTA ³⁶
35
HSBSA
Full Bridge
34
HSBSB
33
OUTB
Output
Filter
HGNDB ³² GND
Channel 1
31
HVDDB
+HV
30
REG5V
29
VDDHV
28
IREF
100K
+HV
0.1u
1u
27
0.1u
HVDDC
+HV
26
HGNDC
GND
25
OUTC
24
HSBSC
Full Bridge
23
HSBSD
22
OUTD
Output
Filter
HGNDD ^{21 GND}
Channel 2
HVDDD ²⁰ +HV
D2-24044
FIGURE 15. 2-CHANNEL FULL BRIDGE EXAMPLE
17
FN7678.0
September 3, 2010