Energy Metering ICs
High precision power measurement chip
BL0921
The BL0921 is a low cost, high accuracy, high stability, simple peripheral circuit electrical energy meter IC. It can exactly measure the real power in the positive orientation and negative orientation and calculate the energy in the same orientation.
It supplies average real power information on the low frequency outputs. BL0921 thinks over the stability of reading error in the process of calibration, An internal no-load threshold ensures that the BL0921 does not exhibit any creep when there is no load.
Features:
Single phase energy meter IC with integrated oscillator
High accuracy, less than 0.1% error over a dynamic range of 500: 1
On-chip oscillator as clock source
Exactly measure the real power in the positive orientation and negative orientation, calculate the energy in the same orientation
Two current monitors continuously monitor the phase and neutral currents in two-wire distribution systems. Uses the larger of two currents to bill, even during a Fault condition
A PGA in the current channel allows using small value shunt and burden resistance
The low frequency outputs F1 and F2 can directly drive electromechanical counters and two phase stepper motors and the high frequency output CF, supplies instantaneous real power, is intended for calibration and communications
Two logic outputs REVP and FAULT can be used to indicate a potential orientation or Fault condition
On-Chip power supply detector
On-Chip anti-creep protection
On-Chip voltage reference of 2.5V±8%
Single 5V supply
Low static power (typical value of 25mW). The technology of SLiM (Smart–Low–current– Management) is used.
Credible work, working time is more than twenty years
Parameter | Symbol | Value | Unit |
Power Voltage VDD | VDD | -0.3~+7(Max) | V |
Input Voltage of Channel 2 to GND | V (V) | VSS+0.5≤V(v)≤VDD-0.5 | V |
Input Voltage of Channel 1 to GND | V (I) | VSS+0.5≤V(i)≤VDD-0.5 | V |
Operating Temperature Range | Topr | -40~+75 | ℃ |
Storage Temperature Range | Tstr | -55~+150 | ℃ |
Power Dissipation | 400 | mW |
BL6513
The BL6513 is the chief IC of the Poly phase electrical meter and a high accuracy energy measurement IC. With low power design, static power is only 25mW. It is based on the features such as superior accuracy, high stability and simple peripheral circuit. The BL6513 is compatible with 3-phase 4-wire or 3-phase 3-wire configurations.
BL6513 is based on digital signal processing. BL6513 can measure positive active power and negative active power; can select the way to calculate the sum of the three-phase active powers, between the arithmetic sum and the absolute value sum.
Features:
High accuracy, less than 0.1% error over a dynamic range of 3000:1
High stability during calibration, the fluctuation of output CF is less than 0.1%.
Low drift, the gain variety is less than 0.1% when input frequency changes from 45Hz to 65Hz
Single 5V Supply, Static Power 25mW (typical)
Power solution only with Resistor & Capacitor can be adopted.
Selectable between the arithmetic sum of the three-phase active energies and the absolute value sum of these energies
Anti-Fault, the Logic Output REVP indicates any of the three phases Potential mis-wiring or Negative Power.
On-chip Creep Protection.
On-chip Power Supply Monitoring.
On-chip Reference 2.5V ± 8% (30ppm/ ℃ typical),with External Overdrive Capability.
External clock 3.58MHz
Compatible with 3-phase 4-wire or 3-phase 3-wire configurations
Item | Symbol | Extremum | Unit |
Power Voltage VDD | VDD | -0.3~+7(Max) | V |
Input Voltage to AGND | V (V) | VSS+0.5≤V(v)≤VDD-0.5 | V |
Input Current to AGND | V (I) | VSS+0.5≤V(i)≤VDD-0.5 | V |
Operating Temperature Range | Topr | -40~+85 | ℃ |
Storage Temperature Range | Tstr | -55~+150 | ℃ |
Power Dissipation | 80 Max | mW |
