International Rectifier IRS2092 Application Note
IRS2092
1
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© 2013 International Rectifier
October 24, 2013
PROTECTED DIGITAL AUDIO AMPLIFIER
Features
Integrated analog input Class D audio
amplifier driver in a small 16 pin package
Floating inputs enable easy half bridge
implementation
Programmable bidirectional over-current
protection with self-reset function
Programmable preset deadtime for improved
THD performances
Start and stop click noise reduction
High noise immunity
100 V ratings deliver up to 500 W in output
power
Operates up to 800 kHz
RoHS compliant
Typical Applications
Home theater systems
Mini component stereo systems
Powered speaker systems
General purpose audio power amplifiers
Product Summary
V
OFFSET
(max)
100 V
Gate driver
Io+
1.0 A
Io-
1.2 A
Selectable Deadtime
25/40/65/105 ns
OC protection delay (max)
500 ns
DC offset
<20 mV
PWM frequency
~800 kHz
Error amplifier open loop
gain
>60 dB
THD+N* (1kHz, 50W, 4Ω)
0.01 %
Residual Noise*
(AES-17 Filter)
200 µVrms
* Measured with recommended circuit
Package Options
SOIC16N PDIP16
Typical Connection Diagram
IRS2092
12V
VAA
GND
IN-
OCSET
COM
COMP
VSS
LO
VCC
VREF
HO
VS
CSD
CSH
VB
INPUT
-B
Vcc
+B
Speaker
DT
2
161
4
3
5
6
7
8
15
14
13
12
11
10
9
IRS2092
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© 2013 International Rectifier
October 24, 2013
Table of Contents
Page
Description
3
Simplified Block Diagram
4
Typical Application Diagram
4
Qualification Information
5
Absolute Maximum Ratings
6
Recommended Operating Conditions
7
Electrical Characteristics
8
Waveform Definitions
11
Functional Block Diagram
12
Input/Output Pin Equivalent Circuit Diagram
13
Lead Definitions
14
Lead Assignments
14
Package Details
15
Tape and Reel Details
16
Part Marking Information
17
Ordering Information
17
IRS2092
3
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© 2013 International Rectifier
October 24, 2013
Description
The IRS2092 is a high voltage, high performance Class D audio amplifier driver with PWM modulator and
protection. In conjunction with two external MOSFET and a few external components, a complete Class D audio
amplifier with protection can be realized.
International Rectifier’s proprietary noise isolation technology allows high current gate drive stage and high
speed low noise error amplifier reside on a single small silicon die.
Open elements of PWM modulator section allow flexible PWM topology implementation
IRS2092
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© 2013 International Rectifier
October 24, 2013
DEAD TIME
HIGH
SIDE
CS
VB
HO
VS
IN-
LOW SIDE CS
CSD
VCC
LO
COM
VAA
GND
COMP
VSS
CSH
PROTECTION
CONTROL
SD
VREF
HV
LEVEL
SHIFT
HV
LEVEL
SHIFT
FLOATING INPUT
FLOATING HIGH SIDE
HV
LEVEL
SHIFT
HV
LEVEL
SHIFT
OCSET
DT
DT
OTA
VAA+VSS
2
COMP
HV
LEVEL
SHIFT
IRS2092
12 V
Vin
-B
Vcc
+B
4 Ω
Vout
35 V
35 V
150 pF
0.47 µF
22 µH
1 kΩ
33 kΩ
10 Ω
4.7 Ω
22 µF
MURS120
10 µF
10 Ω
IRF6645
IRF6645
47 kΩ
510
3.3 kΩ10 µF
10 µF
1 nF
1 nF
10 µF
0.1 µF
10 µF
3.3 kΩ
8.2 kΩ
1 nF
2.7 kΩ
2.7 kΩ
8.2 kΩ
1.2 kΩ
10 kΩ
BAV19WS
0.1 µF
1 Ω
VAA
GND
IN-
OCSET
COM
COMP
VSS
LO
VCC
VREF
HO
VS
CSD
CSH
VB
DT
2
161
4
3
5
6
7
8
15
14
13
12
11
10
9
10 kΩ
Simplified Block Diagram
Typical Application Diagram
IRS2092
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© 2013 International Rectifier
October 24, 2013
Qualification Level
Industrial††
(per JEDEC JESD 47E)
Comments: This IC has passed JEDEC’s Industrial
qualification. IR’s Consumer qualification level is granted
by extension of the higher Industrial level.
Moisture Sensitivity Level
SOIC16N
MSL2
†††
(per IPC/JEDEC J-STD-020C)
DIP16
Not applicable
ESD
Machine Model
Class B
(per JEDEC standard JESD22-A114D)
Human Body Model
Class 2
(per EIA/JEDEC standard EIA/JESD22-A115-A)
Charged Device Model
Class IV
(per JEDEC standard JESD22-C101C)
IC Latch-Up Test
Class I, Level A
(per JESD78A)
RoHS Compliant
Yes
†
Qualification standards can be found at International Rectifier’s web site http://www.irf.com/
††
Higher qualification ratings may be available should the user have such requirements. Please contact your
International Rectifier sales representative for further information.
†††
Higher MSL ratings may be available for the specific package types listed here. Please contact your
International Rectifier sales representative for further information.
Qualification Information
IRS2092
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© 2013 International Rectifier
October 24, 2013
Symbol
Definition
Min
Max
Units
VB High side floating supply voltage
-0.3
220
V
VS
High side floating supply voltage ††
VB -20
VB +0.3
V
HO
High side floating output voltage
VS -0.3
VB +0.3
V
CSH
CSH pin input voltage
VS -0.3
VB +0.3
V
CC
Low side fixed supply voltage ††
-0.3
20
V
LO
Low side output voltage
-0.3
Vcc+0.3
VAA
Floating input positive supply voltage ††
(See I
AAZ
)
210
VSS
Floating input negative supply voltage ††
-1
(See I
SSZ
)
GND +0.3
V
GND
Floating input supply ground voltage
VSS -0.3
(See I
SSZ
)
VAA +0.3
(See I
AAZ
)
I
IN-
Inverting input current †
---
±3
mA
V
CSD
SD pin input voltage
VSS -0.3
VAA +0.3
V
V
COMP
COMP pin input voltage
VSS -0.3
VAA +0.3
VDT
DT pin input voltage
-0.3
VCC +0.3
V
OCSET
OCSET pin input voltage
-0.3
VCC+0.3
I
AAZ
Floating input positive supply zener clamp current
††
---
20
mA
I
SSZ
Floating input negative supply zener clamp current ††
---
20
I
CCZ
Low side supply zener clamp current
†††
---
10
I
BSZ
Floating supply zener clamp current
†††
---
10
I
OREF
Reference output current
---
5
dVS/dt
Allowable Vs voltage slew rate
---
50
V/ns
dVSS/dt
Allowable Vss voltage slew rate
†††
---
50
V/ms
Pd
Maximum power dissipation @ TA +25C
SOIC16N
---
1.0
W
DIP16
---
1.6
Rth
JA
Thermal resistance, Junction to ambient
SOIC16N
---
115
C/W
DIP16
---
75
TJ Junction Temperature
---
150
C
TS Storage Temperature
-55
150
C
TL Lead temperature (soldering, 10 seconds)
---
300
C
†
IN- contains clamping diode to GND.
††
VDD – IN+, GND -VSS, VCC-COM and VB-VS contain internal shunt zener diodes. Please note that the
voltage ratings of these can be limited by the clamping current.
†††
For the rising and falling edges of step signal of 10 V. VSS=15 V to 200 V.
Absolute Maximum Ratings
Absolute Maximum Ratings indicate sustained limits beyond which damage to the device may occur. All voltage
parameters are absolute voltages referenced to COM; all currents are defined positive into any lead. The Thermal
Resistance and Power Dissipation ratings are measured under board mounted and still air conditions
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