Energy Meter. BL0952A Datasheet
BL0952A/BL6513/BL6511 Energy Meter
High accuracy, less than 0.1% error over a
dynamic range of 500:1
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
The Low Frequency Output (F1, F2) can drive
The High Frequency Output (CF) can be used in
calibration and data processing.
Selectable between the arithmetic sum of the
three-phase active energies and the absolute value
sum of these energies.
Measure positive active power and negative
Anti-Fault, the Logic Output REVP indicates a
Potential Miswiring or Negative Power for each
On-chip Creep Protection.
On-chip Power Supply Monitoring.
On-chip Reference 2.42V ± 8%,with External
Interrelated patents are pending
The BL0952A/BL6513/BL6511 is the chief IC of
the three-phase electrical meter and a high accuracy
energy measurement IC. With low power design,
static power is only 25mW. Based on the features such
as superior accuracy, high stability and simple
peripheral circuit, the BL0952A/BL6513/BL6511 is
compatible with 3-phase 3-wire and 3-phase 4-wire
BL0952A/BL6513/BL6511 is based on digital
signal processing. BL0952A/BL6513/BL6511 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.
The high frequency output CF can be used in
calibration and data processing. The low frequency
outputs F1 and F2 can be used to drive a pulse-motor
or an electromechanical counter. In this way, the
power can be measured and the energy can be
The internal phase matching circuitry ensures
that the current and voltage channels are phase
matched.An internal no-load threshold ensures that
the BL0952A/BL6513/BL6511 does not exhibit any
creep when there is no load.
The BL0952A/BL6513/BL6511 consider
emphatically the need of stability during calibration,
the measure data of mass products show that the
output pulse ripple of CF is less than 0.1%.
System Diagram Block
Fig.1 Functional block diagram
Total 1 Pages
BL0952A/BL6513 Three-phase Active
PIN FUNCTION DESCRIPTION
High frequency calibration logic output. The output frequency is
proportional to the average active power.
2 DGND This provides the ground reference for the digital circuitry .
Power supply. This pin provides the supply voltage for the digital
circuitry. The supply voltage should be maintained at 5V ± 5% for
This logic output will go logic high when negative power is detected on
any of the three phase inputs, i.e., when the phase angle between the
voltage and the current signals is greater than 90°.
Analog inputs for current channel. These inputs are fully differential
voltage inputs with maximum differential input signal levels of
This pin provides the ground reference for the analog circuitry.
This pin provides access to the on-chip voltage reference. The on-chip
reference has a nominal value of 2.42V ± 8% and a typical temperature
coefficient of 30ppm/°C. An external reference source may also be
connected at this pin.
Analog inputs for the voltage channel. This channel is intended for use
with the voltage VBP, VAP transducer and is referenced as the voltage
channel in this document. These inputs are single-ended voltage inputs
with maximum signal level of ±500mV with respect to VN for
The logic input is used to select the way the three active energies from
the three phases are summed. This offers the designer the capability to
do the arithmetic sum of the three energies (ADDSEL logic High) or
the sum of the absolute value (ADDSEL logic low).
Select Calibration Frequency. This logic input is used to select the
frequency on the calibration output CF.
Master clock for ADCs and digital signal processing. An external clock
can be provided at this logic input.3.58MHz
A crystal can be connected across this pin and CLKIN as described
above to provide a clock source.
These logic inputs are used to select one of four possible frequencies
for the digital-to-frequency conversion. This offers the designer greater
flexibility when designing the energy meter.
Low Frequency Logic Outputs. F1 and F2 supply average real power
information. The logic outputs can be used to directly drive
electromechanical counters and two-phase stepper motors.
Total 2 Pages
BL0952A/BL6513 Three-phase Active
24 PIN SOP
Fig.2 Package of BL0952A/BL6513/BL6511
Absolute Maximum Ratings
( T = 25℃ )
Power Voltage VDD
Input Voltage to AGND
Input Current to AGND
Operating Temperature Range
Storage Temperature Range
Electronic Characteristic Parameter
(T=25℃, VDD=5V, CLKIN=3.58MHz)
1 Power Current
2 Logic Input Pins
Input High Voltage
Input Low Voltage
3 Logic Output Pins F1/F2
Output High Voltage
Output Low Voltage
Total 3 Pages