SG Micro SGM4703 - Functional Block Diagram

High-Power Stereo Class-D Audio Power Amplifier
SGM4703 with Adjustable Power Limit and Automatic Level Control
17
DECEMBER 2022
SG Micro Corp
www.sg-micro.com
FUNCTIONAL BLOCK DIAGRAM
Class-D
Modulator
Input
Buffer
MODS
Oscillator
PBTL
Control
INPL
INNL
EN
GAIN
FREQ
PLIMIT
ALC
INPR
INNR
BSTPL
VOP L
VONL
BSTNL
FAULTB
BSTPR
VOP R
VONR
BSTNR
PGNDAGND
GVDD AVDD PVDD
Shutdo wn
Control
Gain
Control
PWM Freq.
Control
PLIMIT
Control
ALC
Control
Output
Stage
OCP
LDO
Input
Buffer
Class-D
Modulator
DCP
OTP
UVLO
OVP
Output
Stage
SGM4703
Figure 3. Block Diagram