2004-2012 Sure Electronics Inc. AA-AB32291_Ver1.0
2 X 250Watt Class D Audio
Amplifier Board – IRS2092
User’s Guide
2*250WATT CLASS D AUDIO
AMPLIFIERBOARD –IRS2092
USER’S GUIDE
2004-2012 Sure Electronics Inc.
AA
-AB32291_Ver1.0_Page i
Table of Contents
Chapter 1. Overview .......................................................................................................... 1
1.1 Overview ............................................................................................................ 1
1.2 Accessories ....................................................................................................... 1
1.3 Features ............................................................................................................. 1
1.4 Applications ....................................................................................................... 2
1.5 Benefits .............................................................................................................. 2
1.6 Quick Start ......................................................................................................... 2
Chapter 2. Hardware Detail ............................................................................................... 4
2.1 Power Connection ............................................................................................. 4
2.2 Input Connections ............................................................................................. 5
2.3 Output Connections .......................................................................................... 5
2.4 LED Indicators ................................................................................................... 6
2.5 Notes .................................................................................................................. 6
Chapter 3. Electrical Characteristics ............................................................................... 7
Chapter 4. Mechanical Drawing ....................................................................................... 8
Chapter 5. Contact Us ....................................................................................................... 9
2 X 250Watt Class D Audio Amplifier Board – IR2092
2004-2012 Sure Electronics Inc
AA
-AB32291_Ver1.0_Page ii
Note:
Please read this manual carefully before you use the product. To keep the product in a best working
condition and having a long service time, please operate it according to the relevant steps. The warranty
lapses if the product is damaged because of incorrect use and your negligence.
Please read this manual carefully before you use the product and check if the product is a good one.
DC±60V is recommended to be used to power the product for one hour. Please make sure there’s space for
heat dissipation since this product outputs high power and don’t touch the heat sink with your hand. Never
use this product in an extreme condition.
Warning: Never immerse the product in the rain or any other humid environment to prevent the fire or
electric shock.
Safety Precautions:
1. In order to achieve a better sound quality, please use stable power supply since a bad or unstable power
supply may worsen the sound quality or even cripple the amplifier board.
2. Avoid metal objects. Protect this product well and move away metal objects from this product.
2*250WATT CLASS D AUDIO
AMPLIFIERBOARD –IRS2092
USER’S GUIDE
2004-2012 Sure Electronics Inc.
AA
-AB32291_Ver1.0_Page i
NOTES:
Product Version ： Ver 1.0
Document Version ： Ver 1.0
2 X 250WATT CLASS D AUDIO
AMPLIFIER BOARD – IRS2092
USER’S GUIDE
2004-2012 Sure Electronics Inc.
AA
-AB32291_Ver1.0_Page 1
1.1 Overview
Welcome to use this 2*250W Class D audio amplifier board by Sure Electronics.
It integrates high performance IRS2092 supporting dual channel audio amplification. Both
of channels are capable of outputting nominal power simultaneously and continuously. It’s
suitable for amplifier enthusiasts or hobbyists to finish a complete amplifier system.
Resistance and capacity components of high quality, including Metallized Polyester (PET)
Capacitors and lower ESR electrolytic capacitors, high performance inductors are used to
gain the perfect timber, finally realize high S/N ratio, low THD+N, wide frequency response
range etc.
FIGURE 1-1 FRONT VIEW
1.2 Accessories
We don’t provide audio accessories together with this product. Please go to
www.sure-electronics.com to choose what you need.
Note: The diagrams above are used for reference only.
1.3 Features
Ÿ A perfect "Class D" architecture
Ÿ Frequency response: 20Hz to 20KHz(±3dB)
Ÿ Single end audio signal input
Ÿ Under voltage protection
Chapter 1. Overview
2 X 250Watt Class D Audio Amplifier Board – IR2092
2004-2012 Sure Electronics Inc
AA
-AB32291_Ver1.0_Page 2
Ÿ Over current protection
Ÿ Short Circuit and Over Temperature Protection
Ÿ Click & Pop Noise Reduction
Note: If the fault condition persists, the protection circuit stays in shutdown until the
fault is removed.
1.4 Applications
Ÿ AV receivers
Ÿ Powered speakers
Ÿ Sub-woofers
Ÿ Musical Instrument amplifiers
Ÿ PA System
Ÿ External Car Speaker System
Ÿ Background Music Systems
Ÿ Home DIY
Ÿ Prototype for recording studios, post-production, live sound and hi-fi applications.
1.5 Benefits
Ÿ Mounting holes facilitate installation and fixing
Ÿ Excellent heat dissipation eliminates the requirement of an extra heat sink.
1.6 Quick Start
Suggested connection is shown in figure 1-3.
FIGURE 1-3 CONNECTION SCHEMATIC
Note: Please observe the following steps to complete verification so as to ensure the
products are intact during transit.
Overview
2004-2012 Sure Electronics Inc.
AA
-AB32291_Ver1.0_Page 3
1. Open the amplifier package and make sure the product is intact (No missing
or damaged components and no deformation.
2. Please observe the connection schematics when connecting the amplifier
board. Use a nearby sound source, such as MP3 or CD player to have a trial.
This amplifier board can be deemed as qualified if you can hear the sound
corresponding to that sound source
3. It’s recommended to make sure the polarities of wires correct first and then
connect the wires to the board. After connecting the audio input and output
cables, turn down the output to the lowest and then power the board.
2 X 250WATT CLASS D AUDIO
AMPLIFIER BOARD – IRS2092
USER’S GUIDE
2004-2012 Sure Electronics Inc.
AA
-AB32291_Ver1.0_Page 4
2.1 Power Connection
To power the amplifier board, use terminal blocks CONN1. This board need to be
powered by two 65V 7.5A power supply. The positive of one supply is connected to +B
and the negative connected to Gnd. The negative of the other supply is connected to –B
and the positive connected to Gnd. Pay attention to the polarity when connecting power
supply. The ±B must be applied and removed at the same time.
FIGURE 2-1 POWER CONNECTION
TABLE 2-1 POWER CONNECTION
Connector Mark Description
Terminal
Blocks
CONN1
+B The positive of power supply
Gnd
The negative of positive power supply and the
positive of negative power supply
-B The negative of power supply
TABLE 2-2 RECOMMENDED SUPPLY VOLTAGES
Voltage Limitations Current Requirement
±65V 7.5A
Note:
It’s recommended to use AWG16 wires. The length of power supply cable must
be minimized. Increasing length of PSU cable is equal to increasing the distortion for the
amplifier at high output levels and low frequencies.
Chapter 2. Hardware Detail
Hardware Detail
2004-2012 Sure Electronics Inc.
AA
-AB32291_Ver1.0_Page 5
2.2 Input Connections
You may use RCA connectors to input audio signal.
FIGURE 2-2 INPUT CONNECTION
TABLE 2-2 INPUT CONNECTION
Connector Mark Channel Description
RCA connector
RCA1A Channel 1 Input
RCA1B Channel 2 Input
2.3 Output Connections
You can use terminal blocks SPKR1A、SPKR1B to output audio signal.
FIGURE 2-3 OUTPUT CONNECTION
2 X 250Watt Class D Audio Amplifier Board – IRS2092
2004-2012 Sure Electronics Inc
AA
-AB32291_Ver1.0_Page 6
TABLE 2-3 OUTPUT CONNECTION
Connector Mark Description
Terminal blocks
SPKR1A Output of Channel 1
SPKR1B Output of Channel 2
Note:
1. Never connect SPKR1A- 、SPKR1B- together since they belong to different
NETs.
2. Refer to on-board descriptions for connection details.
3. Both positive and negative speaker outputs are floating and may not be
connected to ground (e.g., through an oscilloscope).
2.4 LED Indicators
This amplifier has 2 LED indicator which is marked as “LED1A” 、“LED1B “. These two
LEDs are used for indicating PWM mode. When powered on, after one second delay,
the two blue LEDs turn ON which indicates that PWM oscillation is present. This
transition delay time is controlled by CSD pin of IRS2092, capacitor CP3.
TABLE 2-4 INDICATOR DESCRIPTION
Indicator Mark Indicator Color Description
LED1A,B Blue PWM (presence of low side gate
signal)
2.5 Notes
In order to protect amplifier board and extend its service lifetime, please read the
following warnings carefully since warranties will be voided if you do not observe the
following warnings:
Warning 1:
Quality-related issues caused by potentiometers installed by buyers.
Warning 2:
In order to achieve a better sound quality, please use stable power supply since a bad or
unstable power supply may worsen the sound quality or even cripple the amplifier board.
Warning 3:
Never equip a pre-amplifier to the audio input since the amplifier itself has powerful
amplification ability and a high signal input will burn out the amplifier chip.
Warning 4:
In order to protect amplifier and speaker, please turn the volume output to the minimum
when hooking up the amplifier and you may readjust the volume when you are sure that
the amplifier is functioning properly.
2 X 250WATT CLASS D AUDIO
AMPLIFIER BOARD – IRS2092
USER’S GUIDE
2004-2012 Sure Electronics Inc.
AA
-AB32291_Ver1.0_Page 7
Following table lists all typical data of the Amp board. For full specification, please refer to
the data sheet of IRS20995 chip.
TABLE 3-1 ELECTRICAL CHARACTERISTICS
Parameter Condition Min. Typ. Max.
Supply Voltage - ±55 ±60V ±65V
Quiescent Current
（Powered by±70V）
FAN ON
-
50mA
Gv Voltage Gain - 40dB Frequency Range - 20Hz to 20KHz（±3dB）
Efficiency
Both channels
output rating
power.
-
90% -
Input Impedance - 13Kohm -
16.7K
ohm-
Load - 3.5 ohm 4ohm Operating Temperature - 0℃ 80℃ 115℃
Storage Temperature - -55℃ 20℃ 150℃
Thermal Shutdown - - 100℃ -
Note:
1. Stresses beyond the listed maximum power supply voltage may cause the
permanent damage to components on board.
2. The input sensitivity values are calculated on the basis of 4 Ohm load.
Chapter 3. Electrical Characteristics
2 X 250WATT CLASS D AUDIO
AMPLIFIER BOARD – IRS2092
USER’S GUIDE
2004-2012 Sure Electronics Inc.
AA
-AB32291_Ver1.0_Page 8
FIGURE 4-1 MECHANICAL DRAWING
Chapter 4. Mechanical Drawing
2 X 250WATT CLASS D AUDIO
AMPLIFIER BOARD – IRS2092
USER’S GUIDE
2004-2012 Sure Electronics Inc.
AA
-AB32291_Ver1.0_Page 9
Sure Electronics Co., Ltd.
East zone, 3F, Building 6
Jingang Technology Innovation Center
No.108 Ganjiabian Rd (ZIP: 210000)
Qixia District
Nanjing
P.R.China
Tel: +86-25-68154800-860
Fax: +86-25-68154891-832
Website: www.sure-electronics.com
Email: customerservice@sure-electronics.com
Chapter 5. Contact Us
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