Description:

BL0906 is a built-in clock multiplexed calibration-free power metering chip developed by Shanghai Belling Co. It can measure up to 6-phase power and is suitable for electric bicycle charging piles, PDUs, multi-circuit meters, and other scenarios that require multiplexed metering. 

The BL0906 integrates a 7-channel high-precision Sigma-Delta ADC, which can measure 7 signals (current or voltage) simultaneously. 

BL0906 can measure current, voltage RMS, active power, active energy and other parameters, can output fast current RMS (for leakage monitoring, overcurrent protection and other fault detection), waveform output and other functions, through the UART or high-speed SPI interface to output data.

Features:

⚫ Measurement channels including 6 current channels, 1 voltage channel  

⚫ High accuracy, less than 0.1% non-linear measurement error of active energy over the input dynamic range (5000:1)  

⚫ RMS values for voltage and current with an RMS error of less than 0.1% over the measurement dynamic range (2500:1) 

⚫ For input waveforms, different filters can be selected to obtain full-wave, fundamental, or DC RMS values and power

Rate. 

⚫ Optional DC signal measurement, input dynamic range 2000:1, power measurement nonlinearity error <±1%, the  

⚫ Batch factory gain error less than 1%. 

⚫ Built-in waveform registers, can be used for waveform analysis 

⚫ Leakage monitoring function, can measure more than 1mA leakage, the shortest response time of 10mS, leakage monitoring threshold and response time can be set.

Leakage monitoring threshold and response time can be set 

⚫ Each overcurrent output indication, overcurrent threshold value and response time can be set 

⚫ Built-in temperature sensor, measurement range -40 degrees ~ 85 degrees, measurement accuracy ± 3 degrees, to meet the product itself over-temperature monitoring, high-current node preset temperature, and the temperature of the product.

⚫ Built-in temperature sensor, measurement range -40 degrees ~ 85 degrees, measurement accuracy ± 3 degrees, to meet the product's over-temperature monitoring, high-current node preset temperature quotes, room temperature measurement requirements 

⚫ Can analyze the load form 

⚫ Built-in active, energy, current\voltage RMS and angle registers 

⚫ UART /SPI interface 

⚫ Anti-submarine design ensures noise removal when no current is present 

⚫ Power-down monitoring, chip reset when below 2.7V 

⚫ Built-in benchmark reference voltage source 

⚫ Built-in oscillator circuit, clocked at about 8MHz  

⚫ Single operating supply 3.3V, low power consumption 30mW (typical) 

⚫ LQFP32 package