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PDF BL6528 Data sheet ( Hoja de datos )
| Número de pieza | BL6528 | |
| Descripción | Single-phase Multifunction Metering IC | |
| Fabricantes | BELLING | |
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BL6528 Single-phase Multifunction Metering IC
FEATURES
High accuracy. Less than 0.1% error in active energy measurement and reactive measurement over a dynamic
range of 3000:1.
High stability, less than 0.1%error in the output frequency fluctuation.
Measure the active power in the positive orientation and negative orientation, transform to fast pulse output
(CF).
Measure the reactive power transform to fast pulse output (CF_VAR).
Measure the reactive power transform to fast pulse output (CF_VA).
Measure instantaneous IRMS and VRMS over a dynamic range of 1500:1.
On-chip SAG and zero-crossing detector.
On-chip power supply detector.
On-chip anti-creep protection with the programmable threshold set.
Provide the pulse output with programmable frequency adjustment.
Provide the programmable gain adjustment and phase compensation
Measure the power factor (PF).
Provide a programmable interrupt request signal (/IRQ).
Provide a SPI/UART communication interface.
On-chip voltage reference of 2.5V.
With 3.58MHz external crystal oscillator.
Single 5V supply, 30mW(typical)
Interrelated patents are pending
DESCRIPTION
The BL6528 is a low cost, high accuracy, high stability, electrical energy measurement IC intended to single
phase, multifunction applications.
The BL6528 incorporates two high accuracy Sigma-Delta ADC, voltage reference, power management and
digital signal processing circuit using to calculates active energy , reactive energy ,apparent energy ,IRMS ,VRMS
etc.
The BL6528 measures line voltage, current and calculates active ,reactive ,apparent energy, power factor, line
frequency, detect SAG, overvoltage, overcurrent, PEAK, zero-crossing voltage.
The BL6528 provide access to on-chip meter registers via SPI communication interface.
The BL6528 provide all-digital domain offset compensation, gain adjustment, phase compensation
(maximum ±2.54°adjustable).
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BL6528 Single-phase Multifunction Metering IC
ABSOLUTE MAXIMUM RATIONS
（T = 25 ℃）
Parameter
Symbol
Value
单位
Power Voltage AVDD、DVDD
AVDD、DVDD
-0.3 ~ +7
V
Analog Input Voltage to AGND
V1P、V2P
-6 ~ +6
V
Digital Input Voltage to DGND
DIN、SCLK、/CS
-0.3 ~ VDD+0.3
V
Digital Output Voltage to DGND
Operating Temperature Range
Storage Temperature Range
CF_WATT、CF_VAR、AT0、AT1、
/IRQ、DOUT
-0.3 ~ VDD+0.3
Topr -40 ~ +85
Tstr -55 ~ +150
V
℃
℃
Power Dissipation（SSOP24）
P
80 mW
Electronic Characteristic Patameter
（AVDD = DVDD = 5V, AGND＝DGND＝0V, CLKIN=3.58MHz, T=25℃）
Parameter
Measure Error on
Active Power
Symbol
WATTerr
Test Condition
Over a dynamic
range 3000:1
Measure Min Typical Max
Pin Value Value Value
CF 0.1 0.3
Unit
%
Phase error when
PF=0.8 Capacitive
PF08err
Current lead 37°
（PF=0.8）
0.5 %
Phase error when
PF=0.5Inductive
PF05err
Current lags 60°
（PF=0.5）
AC PSRR
DC PSRR
ACPSRR
DCPSRR
IP/N=100mV
VP/N=100mV
Vrms measurement
Error
Irms measurement
Error
VRMSerr
IRMSerr
1500:1 input DR
1500:1 input DR
0.5 %
0.01 %
0.1 %
0.3 %
0.3 %
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BL6528 Single-phase Multifunction Metering IC
Active power gain adjustment
The gain register (WATTGN) is used to adjust the active power measurement range. This
register is in 12-bit sign magnitude format, the default value is 000H. The following formula
shows how to adjust the output active power:
Output
Activ ePowe r
Active
Power
(1
WATTWG
212 )
The minimum value that can be write to the WATTGN register is 801H(HEX), which
represents a gain adjustment of -50%. The maximum value that can be write to the WATTGN
register is 7FFH (HEX), which represents a gain adjustment of +50%.
Similar gain calibration registers are available for current channel and voltage channel
(I_CHGN, V_CHGN).
No-load threshold of active power
BL6528 contains two no-load detection features that eliminate meter creep. BL6528 can set
the no-load threshold on the active power (WA_CREEP1), this register is in 12-bit unsigned
magnitude format. This register is used to set the active power threshold value, When the absolute
value of the input power signal is less than this threshold, the output active power is set to zero.
This can make the active power register to 0 in no-load conditions, even a small noise signal
input .
WATT
0
WATT
,
,
| WATT | WA _ CREEP1
| WATT | WA _ CREEP 1
The WA_CREEP2 register is used to set the active power timer threshold value. The default
value is 0xFFF. There have a internal TIME_CREEP register in BL6523B, when detect the CF
pulse output , the TIME_CREEP register is set to the value of WA_CREEP2. If not detected the
CF pulse output, the TIME_CREEP register value decrease. If the TIME_CREEP register decrease
to 0, there is still no CF signal output, the BL6528 produce a reset signal used to reset the internal
energy accumulated register of CF pulse and reload the value of WA_CREEP2 to the
TOME_CREEP register. The resolution of the WA_CREEP_H is 4.6s / LSB, so the maxium
timing anti-creep time is about 5h13m.
MODE [3]=1 enable timing anti-creep function.
MODE [3]=0 disable timing anti-creep function.
Active power compensation of small signal
BL6528 contains a small active power signal compensation register (WA_LOS), this register
is in 12-bit sign magnitude format. The default value is 000H。
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| Páginas | Total 27 Páginas | |
| PDF Descargar | [ Datasheet BL6528.PDF ] | |
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