SinglePhaseEnergyMeterIC
with Integrated Oscillator
BL6506
ꢀ FEATURES
ꢀ DESCRIPTION
ꢁ
High accuracy, less than 0.1% error over a
The BL6506 is a low cost, high accuracy, high
stability, simple peripheral circuit electrical energy
meter IC. The meter based on the BL6506 is intended
for using in single-phase, two-wire distribution
systems. It can exactly measure the real power in the
positive orientation and negative orientation and
calculate the energy in the same orientation.
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
The BL6506 incorporates a novel fault detection
scheme that both warns of fault conditions and allows
the BL6506 to continue accurate billing during a fault
event. The BL6506 does this by continuously
monitoring both the phase and neutral (return)
currents. PIN15 (FAULT) indicates Fault condition,
when these currents differ by more than 12.5%.
Billing is continued using the larger of the two
currents when the difference is greater than 14%.
The BL6506 supplies average real power
information on the low frequency outputs F1 (Pin20)
and F2 (Pin19). These logic outputs may be used to
directly drive an electromechanical counter and
two-phase stepper motors. The CF (Pin18) logic
output gives instantaneous real power information.
This output is intended to be used for calibration
purposes or interface to an MCU.
ꢁ
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.
BL6506 thinks over the stability of reading
error in the process of calibration. Bulk test data
indicate that in the condition of small signal 5%Ib
(Ib=5A), the error of CF is less than 0.1%. An internal
no-load threshold ensures that the BL6506 does not
exhibit any creep when there is no load.
ꢁ
Credible work, working time is more than twenty
years
Interrelated patents are pending
ꢀ
BLOCK DIAGRAM
SSOP 20
http://www.belling.com.cn
- 1 -
Total 14 Pages
3/15/2007
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