D2-24044 Datasheet, PDF (13/20 Pages) Intersil Corporation – Digital Audio Amplifier Power Stage

D2-24044
OT Warning
(Low-Limit)
Over-Temperature
Detectors
OT Shut-Down
(High-Limit)
HVDD
Undervoltage
Detector
+5V
Undervoltage
Detector
PWMVDD
Undervoltage
Detector
Over-Current
Warning Detected
(OUTA)
Over-Current
Warning Detected
(OUTB)
Over-Current
Warning Detected
(OUTC)
Over-Current
Warning Detected
(OUTD)
nOVRT
Pin
nERRORA
Pin
nERRORB
Pin
nERRORC
Pin
nERRORD
Pin
nPDN
Pin
Over-Current
Short Detect
(OUTA)
PWM Input to
OUTA From
PWM Controller
Over-Current Shutdown
OUTA
S
R
PWM
Present
Detector
Power Down
OUTA
Over-Current
Short Detect
(OUTB)
PWM Input to
OUTB From
PWM Controller
Over-Current Shutdown
OUTB
S
R
PWM
Present
Detector
Power Down
OUTB
Over-Current
Short Detect
(OUTC)
PWM Input to
OUTC From
PWM Controller
Over-Current Shutdown
OUTC
S
R
PWM
Present
Detector
Power Down
OUTC
Over-Current
Short Detect
(OUTD)
PWM Input to
OUTD From
PWM Controller
Over-Current Shutdown
OUTD
S
R
PWM
Present
Detector
Power Down
OUTD
Over-Current (OC) Shutdown: OC detect condition is latched, shutting down
output. Latched shutdown is then cleared after over-current condition has
cleared, AND PWM data clocking has stopped from PWM controller.
FIGURE 10. PROTECTION AND MONITORING HIGH-LEVEL FUNCTIONAL OPERATION
13
FN7678.0
September 3, 2010