Part number : EG8010
Functions : SPWM – Single-phase pure sine wave inverter ASIC
Manufacturer : EG Microelectronics
EG8010 is a digital pure sine wave inverter ASIC (Application Specific Integrated Circuit) with complete function of built-in dead time control. It applies to DC-DC-AC two stage power converter system or DC-AC single stage low power frequency transformer system for boosting. EG8010 can achieve 50/60Hz pure sine wavewith high accuracy, low harmonic and distortion by external 12MHz crystal oscillator. EG8010 is a CMOS IC that integrates SPWM sinusoid generator, dead time control circuit, range divider，soft start circuit, circuit protection, RS232 serial communication, 12832 serial LCD unit, and etc.
1. 5V single power supply
2. pin set four kinds of pure sine wave output frequency:
– 50Hz fixed frequency pure sine wave
– 60Hz fixed frequency pure sine wave
– 0-100Hz pure sine wave frequency is adjustable
– 0-400Hz pure sine wave frequency is adjustable
– unipolar and bipolar modulation mode
EG8010 works under two modulation modes: unipolar modulation and bipolar modulation. Under unipolar modulation, only one bridge (pins SPWMOUT3 & SPWMOUT4) is used for SPWM modulate output, and another bridge (pins SPWMOUT1，SPWMOUT2) is used for fundamental wave output. A filter inductor needs to connect toSPWM output port, and a voltage feedback circuit needs to connect to SPWM inductor’s output port(as shown in Fig 8.1a). Under bipolar modulation, both bridges (EG8010 pins SPWM3, SPWM4, SPWM1, SPWM2) are used for SPWM output. Using both inductors will result in better flirting, a voltage feedback circuit need difference and feedback handling by voltage divider of both channels.