Sure Electronics IRS2092 - Chapter 2 Hardware Detail; 2.1 Power Connection

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