Infinity KAPPA FIVE - Block Diagram and Connections

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IRS20955(S)PbF
Data Sheet No. PD60303
PROTECTED DIGITAL AUDIO DRIVER
Features
• Floating PWM input enables easy half-bridge
implementation
• Programmable bidirectional over-current protection
with self-reset function
• Programmable preset deadtime for improved THD
performances
• High noise immunity
• ±100 V ratings deliver up to 500 W in output power
• 3.3 V/5 V logic compatible input
• Operates up to 800 kHz
• RoHS compliant
Description
The IRS20955 is a high voltage, high speed MOSFET driver
with a floating PWM input designed for Class D audio
amplifier applications.
Bi-directional current sensing detects over-current
conditions during positive and negative load currents without
any external shunt resistors. A built-in protection control
block provides a secure protection sequence against over-
current conditions and a programmable reset timer.
The internal deadtime generation block enables accurate
gate switching and optimum deadtime setting for better
audio performance, such as lower THD and lower audio
noise floor.
Product Summary
V
OFFSET
(max)
± 100 V
I
o+
1.0 A
Gate driver
I
o-
1.2 A
Selectable deadtime
15 ns, 25 ns,
35 ns, 45ns
Propagation delay 90 ns
OC protection delay 500 ns (max)
Shutdown propagation
delay
250 ns (max)
Package
16-Lead PDIP
Typical Connection
(Please refer to Lead
Assignments for correct
pin configuration. This
diagram shows
electrical connections
only)
IRS20955 (S)
12V
VDD
IN
CSD
VSS
COM
OCSET
LO
VCC
HO
VS
DT
CSH
VB
-B
Vcc
Speaker
+B
PWM
VREF
NC
NC
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KAPPA FIVE