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- Commodity name: EG8025
- 封装: LQFP80
- 品牌: EG/Yi Jing Wei
Chip Description
The EG8025 is a mixed analog-digital chip that uses current mode, center-aligned PWM modulation, and built-in dual 600V half-bridge high-voltage MOS drivers. It is specifically designed for inverter products. The chip uses CMOS technology, and its main internal modules include an SPWM sine wave generator, dead-time control circuit, multiple feedback and protection processing circuits, and a UART serial communication module. Packaged in an LQFP80 package, it requires only a few external components to achieve characteristics such as a no-load waveform distortion rate of less than 1.5%, a full-load waveform distortion rate of less than 3%, and high-precision output voltage, meeting the waveform requirements of the inverter industry.
It integrates two 600V half-bridge high-voltage MOS drivers. The driver's output current capacity is +/-2A, and it has four independent cycle-by-cycle PWM shutdown protections, effectively preventing damage to MOS transistors from excessively high peak currents under extreme conditions. It also provides two SD pins, SD1 and SD2. SD1 is the cycle-by-cycle shutdown pin for driver 1HO1 and LO1, and SD2 is the cycle-by-cycle shutdown pin for driver 2HO2 and LO2. Combining the MCU and SD functions enables short-circuit protection for the inverter.
The EG8025 has built-in comprehensive protection functions, including DC bus overvoltage and undervoltage protection, AC output undervoltage protection, overload alarm indication, overload protection indication, overcurrent protection indication, overtemperature protection indication, and short-circuit protection indication. The EG8025 supports three-phase inverter functionality. Through AC zero-crossing signal output and synchronous phase signal input, transmitted via an optocoupler isolation circuit, it can be used in a serial cascade configuration to form a three-phase inverter with a 120-degree phase difference.
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