78M6631-IM/F

The 78M6631-IM/F is a 3-phase power measurement IC in 56 pin TQFN package. This is a highly integrated power measurement and monitoring system-on-chip (SoC) with a 10MHz 8051-compatible MPU core and Single Converter Technology containing a 22bit delta sigma converter and 32bit compute engine (CE). It has been designed specifically for a wide variety of applications requiring 3-phase power and quality measurements. It supports both delta and wye configurations. At the measurement interface, device provides 6 analogue inputs including 3 differential current and 3 voltage for interfacing to current and voltage sensors. Device provides better than 0.5% accuracy over a wide 2000:1 dynamic range. The integrated MPU core and 128KB of flash memory provide a flexible means of configuration, post processing, data formatting, interfacing to host processor via a UART or SPI interface or using DIO pins for LEDs or relay control. It is used in building automation, solar inverters & motor health.

• Supply voltage range is 3V to 3.6V
• Operating temperature range from -40°C to 85°C, programmable alarm thresholds
• Exceeds IEC 62053/ANSI C12.20 standards, voltage reference <lt/> 40 ppm/°C
• 22bit delta-sigma ADC with independent 32bit compute engine (CE), 128KB flash with security
• 8bit MPU (80515), one clock cycle per instruction with 4KB MPU XRAM
• 32KHz time base with hardware watchdog timer, 17 general purpose 5V tolerant I/O pins
• True RMS current and voltage calculations
• Active, reactive, apparent, fundamental and harmonic power calculations
• Fundamental & harmonic current and voltage calculations, line frequency & power factor calculations
• Phase compensation (±18° at 60Hz), built-in calibration routines

Applications

Power Management

Notes

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