Chip Description EG8030 is a digital, full-featured three-phase pure sine wave inverter generator chip with built-in dead-time control. Its four configurable operating modes are applicable to two-stage DC-DC-AC power conversion architectures or single-stage power frequency transformer boost conversion architectures. With an external 16MHz crystal oscillator, it generates high-precision three-phase SPWM signals with low distortion and harmonics. It also has a complete sampling mechanism capable of collecting current signals, temperature signals, and three-phase voltage signals for processing, enabling output voltage regulation and various protection functions. The chip uses CMOS technology and integrates an SPWM sine wave generator, dead-time control circuit, amplitude factor multiplier, and soft-start circuit.

Chip Features

• • 5V single power supply

  • External 16MHz crystal oscillator

  • Pin configuration for four operating modes:

    • Three-phase synchronous open-loop voltage regulation Three-phase synchronous closed-loop voltage regulation

    • Three-phase independent open-loop voltage regulation Three-phase independent closed-loop voltage regulation

  • Real-time processing of voltage, current, and temperature feedback

  • Overvoltage, undervoltage, overcurrent, short-circuit, and overheat protection functions

  • Pin 3 soft start

  • Phase reversal function

  • Phase zeroing function

  • One LED status indicator and buzzer alarm

  • One fundamental frequency output and one sine wave simulation signal output

  • One fan control output

  • Pin setting for two types of three-phase pure sine wave output frequencies:

    • 50Hz/60Hz pure sine wave fixed frequency

  • PWM carrier frequency can be set:

    • 20KHz carrier frequency 10KHz carrier frequency

    • 5KHz carrier frequency 2.5KHz carrier frequency

  • Built-in dead-time control, pin setting for four types of dead-time:

    • 300nS dead time 500nS dead time

    • 1.0uS dead time 2.0uS dead time

  • The company provides modifications to the corresponding functions or parameters according to the customer's application scenarios