OM13006,598 NXP Semiconductors, OM13006,598 Datasheet - Page 193
OM13006,598
Manufacturer Part Number
OM13006,598
Description
BOARD EVAL EM773 METER EU PLUG
Manufacturer
NXP Semiconductors
Type
Other Power Managementr
Specifications of OM13006,598
Design Resources
Plug Meter Schematics, Gerber Files USB Dongle Schematics, Gerber Files
Main Purpose
Power Management, Energy/Power Meter
Embedded
Yes, MCU, 32-Bit
Utilized Ic / Part
EM773FHN33,551
Interface Type
USB
Maximum Operating Temperature
+ 150 C
Operating Supply Voltage
1.8 V to 3.6 V
Product
Power Management Development Tools
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Primary Attributes
-
Secondary Attributes
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
For Use With/related Products
EM773, OL2381
Other names
568-6681
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UM10415
User manual
16.6.1.3 Current measurement input range I2pp
16.6.1.4 Phase error correction angle DeltaPhi1
16.6.1.5 Phase error correction angle DeltaPhi2
The parameter I2pp for the I_LOWGAIN input depends on the transfer of the analog input
circuit in front of the Metrology Engine and it sets the peak-to-peak range for the second
current channel (in Ampere). The input circuit for this channel should be designed in such
a way that this range is approximately 16 * I1pp for an optimized accuracy curve.
Example: For a two current-channel 16 A meter this range will cover the range from 1A to
16 A and the corresponding value for I1pp will be at least 2√2 * 16 = 45.3 A In practice this
value needs to be larger, because margins for component tolerances need to be
accounted for in the input circuit design.
The transfer of the analog input circuit in front of the Metrology Engine must guarantee
that the signal at the I_LOWGAIN input of the Energy Measurement IC is between V
and V
Remark: If there is no second current measurement channel present, this value must be
set to zero.
Due to component differences, a phase error can occur between the VOLTAGE and
I_HIGHGAIN channels. This error needs to be corrected for accurate measurements.
The parameter DeltaPhi1 contains the correction angle (in radian) to compensate a phase
error between the VOLTAGE channel and the I_HIGHGAIN current channel.
Due to component differences, a phase error can occur between the VOLTAGE and
I_LOWGAIN channels (if this channel is used). This error needs to be corrected for
accurate measurements.
The parameter DeltaPhi2 contains the correction angle (in radian) to compensate a phase
error between the VOLTAGE channel and the I_LOWGAIN current channel.
If there is no second current measurement channel present, this value can be set to zero.
DD
.
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 10 September 2010
Chapter 16: EM773 Metrology engine
UM10415
© NXP B.V. 2010. All rights reserved.
193 of 310
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