Datasheet

ManualsBrandsMAXIM INTEGRATED ManualsPMICsPMIC - power monitoring Single phase SOIC 8 Surface-mount

71M6103/71M6113/

71M6201/71M6203/

71M6601/71M6603

Isolated Sensor ICs

DATA SHEET

For pricing, delivery, and ordering information, please contact Maxim Direct at

1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.

19-5704; Rev 3; 12/12

GENERAL DESCRIPTION

The 71M6103/71M6113/71M6201/71M6203/71M6601/71M6603

(71M6xxx) isolated sensor ICs enable Maxim Integrated’s 4th-

generation polyphase-metering 71M654x systems-on-chips

(SoCs) to use nonisolating sensors such as resistive shunts

without the need for costly and nonlinear isolation transformers

or CTs. Isolation is provided by low-cost pulse transformers that

form a bidirectional digital communication link between the

71M654x and the isolated sensor ICs.

The 71M6xxx isolated sensor ICs contain a 22-bit delta-sigma

ADC, an amplifier with differential inputs, a precision voltage

reference, a temperature sensor, and a supply voltage generator

that is energized by power pulses provided by the 71M654x.

In conjunction with the 71M654x metering SoCs, the isolated

sensor ICs offer unprecedented BOM cost reduction, immunity to

magnetic tampering, and enhanced reliability for single-phase

and polyphase applications.

MPU

RTC

TIMERS

IADC0

VADC8 (VA)

IADC2

VADC9 (VB)

XIN

XOUT

COM0...5

V3P3A V3P3SYS

VBAT

VBAT_RTC

IADC4

VADC10 (VC)

SEG

GNDA GNDD

SEG/DIO

DIO

ICE

NEUTRAL

LOAD

8888.8888

PULSES,

DIO

AMR

POWER FAULT

COMPARATOR

MODUL-

ATOR

SERIAL PORTS

OSCILLATOR/

PLL

MUX and ADC

LCD DRIVER

DIO, PULSES

COMPUTE

ENGINE

FLASH

MEMORY

RAM

32 kHz

REGULATOR

Shunt Current Sensors

POWER SUPPLY

71M6543F/

71M6543H

TEMPERATURE

SENSOR

VREF

IADC6

BATTERY

PWR MODE

CONTROL

WAKE-UP

NEUTRAL

C or µWire

EEPROM

9/17/2010

IADC1

IADC3

IADC5

IADC7

RTC

BATTERY

V3P3D

BATTERY

MONITOR

SPI INTERFACE

HOST

LCD DISPLAY

Resistor Dividers

Pulse Transformers

3x 71M6xx3

Note: This system is referenced to Neutral

71M6xx3

}IN*

}IA

}IB

}IC

*IN = Neutral Current

FEATURES

• 0.1% Accuracy Over 2000:1 Current

Range

• Exceeds IEC 62053/ANSI C12.20

Standards

• Compatible with Shunt Resistors as Low

as 50µΩ

• On-Chip Temperature Sensor Enables

Localized Digital Temperature

Compensation by the 71M654x

• 22-Bit ADC

• Powered from the 71M654x Using Pulses

Sent Through the Transformer

• 3.3mW Typical Consumption

• On-Chip Power Monitoring

• Industrial Temperature Range

• 8-Pin Lead(Pb)-Free SO Package

Summary of content (19 pages)

PAGE 1
71M6103/71M6113/ 71M6201/71M6203/ 71M6601/71M6603 Isolated Sensor ICs DATA SHEET GENERAL DESCRIPTION FEATURES The 71M6103/71M6113/71M6201/71M6203/71M6601/71M6603 (71M6xxx) isolated sensor ICs enable Maxim Integrated’s 4thgeneration polyphase-metering 71M654x systems-on-chips (SoCs) to use nonisolating sensors such as resistive shunts without the need for costly and nonlinear isolation transformers or CTs.
PAGE 2
71M6xxx Data Sheet Table of Contents 1 2 3 3.1 3.2 Hardware Description ................................................................................................................. 4 Functional Description ............................................................................................................... 4 Applications Information ........................................................................................................... 5 Product Selection ................................
PAGE 3
71M6xxx Data Sheet List of Figures Figure 1: Block Diagram................................................................................................................................ 4 Figure 2: External Components Connected to the 71M6xxx ........................................................................ 7 Figure 3: Current Sensors Connected to the 71M6541D/F Using One 71M6x01 ........................................
PAGE 4
71M6xxx Data Sheet 1 HARDWARE DESCRIPTION The 71M6103/71M6113/71M6201/71M6203/71M6601/71M6603 (71M6xxx) remote sensor ICs integrate all functional blocks required to implement an isolated front-end with digital communication capability. Figure 1 shows the 71M6xxx IC block diagram.
PAGE 5
71M6xxx Data Sheet The 71M6xxx isolated sensors provide a continuous data stream of ADC data plus an independent data stream that contains auxiliary information as requested by the 71M654x. The ADC data is processed by CE code in the 71M654x and stored in CE RAM. Auxiliary information is processed by the MPU of the 71M654x using I/O RAM registers. Basic settings and functions of the 71M6xxx can be controlled by various I/O RAM registers in the 71M654x.
PAGE 6
71M6xxx Data Sheet The shunt resistance must be balanced with the maximum current range of the part type, as shown in Table 2. Various combinations of current ranges and shunt resistance values are possible. However, the shunt resistance for a given current has to be chosen carefully as not to exceed the maximum RMS voltage at the INP/INN pins of the 71M6xxx. The maximum wattage of the shunt resistor is another consideration that applies to the resistance range of the shunt.
PAGE 7
1M6xxx Data Sheet Current Shunt Sensor Load R1 1 kΩ R2 1 kΩ 71M6xxx INP INN VCC SN GND 1 SP 7 NC Voltage Sensing 6 TEST 5 8 2 3 4 C1 1. 0 µF IAN IAP V3P3A VA Pulse Transformer 71M654x Figure 2: External Components Connected to the 71M6xxx 3.3 Connections to Sensors and to the 71M654x Figure 3 shows the sensor connections for single-phase meter application using a 71M6541D/F and 71M6x01.
PAGE 8
71M6xxx Data Sheet NEUTRAL Shunt LOAD Shunt LINE NEUTRAL Note: This system is referenced to LINE POWER SUPPLY LINE Resistor Divider LINE 71M6x01 MUX and ADC V3P3A V3P3SYS GNDA GNDD PWR MODE CONTROL IAP IAN Pulse Transformer 71M6541D/F VBAT_RTC IBP IBN IR TEMPERATURE SENSOR VREF RAM SERIAL PORTS COMPUTE ENGINE TX RX MODUL- RX ATOR TX POWER FAULT COMPARATOR HOST BATTERY VBAT VA AMR WAKE-UP REGULATOR SPI INTERFACE FLASH MEMORY MPU RTC TIMERS ICE BATTERY MONITOR COM0...
PAGE 9
71M6xxx Data Sheet C Shunt Current Sensors LOAD NEUTRAL B A POWER SUPPLY Resistor Dividers 71M6xx3 71M6xx3 71M6xx3 NEUTRAL Pulse Transformers Note: This system is referenced to Neutral 3x 71M6xx3 MUX and ADC IADC0 IADC1 }IN* VADC10 (VC) IADC6 IADC7 }IC VADC9 (VB) IADC4 IADC5 }IB VADC8 (VA) IADC2 IADC3 }IA AMR IR V3P3A V3P3SYS GNDA GNDD PWR MODE CONTROL 71M6543F/ 71M6543H TEMPERATURE SENSOR SERIAL PORTS COMPUTE ENGINE RX FLASH MEMORY POWER FAULT COMPARATOR HOST BATTERY VBAT RAM MODU
PAGE 10
71M6xxx Data Sheet Signal traces Isolation gap Transformers Figure 5: Copper Separation and Signal Traces for a Polyphase PCB 3.5 Compatibility with the 71M654x The 71M6xxx isolated sensor ICs are designed to be operated in conjunction with the 71M654x energymetering ICs. Operation of the 71M6xxx isolated sensor ICs requires a 71M654x IC with CE code capable of interfacing with the 71M6xxx. CE codes written for operation with CTs do not work with the 71M6xxx.
PAGE 11
71M6xxx Data Sheet 4 SPECIFICATIONS 4.1 Absolute Maximum Ratings Table 3 shows the absolute maximum ranges for the device. Stresses beyond Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only and functional operation at these or any other conditions beyond those indicated under recommended operating conditions (4.3 Recommended Operating Conditions) is not implied.
PAGE 12
71M6xxx Data Sheet 4.4 Performance Specifications Unless otherwise specified, all parameters listed in this section are valid over the Recommended Operating Conditions provided in Table 5. 4.4.1 Supply Current Table 6: Supply Current Performance Specifications PARAMETER CONDITIONS VCC Current, Normal Operation 4.4.2 MIN VCC = 3.3V TYP MAX UNITS 0.77 1.
PAGE 13
71M6xxx Data Sheet 4.4.5 VREF Performance Specifications Table 10 shows the performance specifications for the ADC reference voltage (VREF). Table 10: VREF Performance Specifications PARAMETER VREF Output Voltage VREF Output Impedance CONDITIONS MIN TYP MAX 71M6201, 71M6203, 71M6113: TA = +22°C 1.193 1.195 1.197 71M6601, 71M6603, 71M6103: TA = +22°C 1.180 V ILOAD = 10µA, -10µA on TMUXOUT 1.195 1.210 8 kΩ VCC = 2.8V to 3.6V -1.5 +1.5 VCC = 2.5V to 3.
PAGE 14
71M6xxx Data Sheet 4.4.
PAGE 15
71M6xxx Data Sheet 4.5 Typical Performance Data Wh Polyphase Load Line with 50µΩ Shunts 0.5 0.4 0° 0.3 60° 0.2 300 ° 0.1 180° 0 -0.1 -0.2 -0.3 -0.4 -0.5 0.1 1 10 100 Figure 6: Wh Error at Room Temperature (71M6203, 100A/0.1A, 60Hz/240V AC) VARh Polyphase Load Line with 150µΩ Shunt 0.5 0.4 0.3 90° 0.2 150° 0.1 0 -0.1 -0.2 -0.3 -0.4 -0.5 0.1 1 10 100 Figure 7: VARh Error at Room Temperature (71M6203, 100A/0.
PAGE 16
71M6xxx Data Sheet 4.6 Package Outline Drawing Controlling dimensions are in mm. 10 9 2.465 5.99 +0.21 -0.05 1.97 0.41 +0.08 -0.06 1.47 +0.08 -0.07 SEE DETAIL A 4 SIDE VIEW 3 0.15 +0.1 0.023 SEATING PLANE 0.64 +0.25 5 -0.23 DETAIL A 0.33 ±0.08 x 45° 8 1.63 +0.10 -0.08 4.93 -0.13 +0.05 5° +3° -5° COO BOTTOM VIEW TOP VIEW 1.27 BSC PARTING LINE 3.94 4 +0.05 -0.13 END VIEW 0.20 +0.05 -0.
PAGE 17
71M6xxx Data Sheet 4.7 IC Pinout 1 2 3 4 VCC TEST SP INN SN INP GND NC 8 7 6 5 Figure 9: Pinout for 8-Pin SO Package 4.8 Pin Description Table 12: Pin Description PIN 1 NAME VCC 2 SP 3 SN 4 GND 5 NC 6 INP 7 INN 8 TEST FUNCTION Supply Voltage Output. A 1.0µF capacitor to GND should be provided.
PAGE 18
71M6xxx Data Sheet 5 ORDERING INFORMATION Table 13: Product Variations PART APPLICATION 71M6601 1-phase 71M6603 3-phase 71M6103 3-phase 71M6113 3-phase 71M6201 1-phase 71M6203 3-phase RATED CURRENT (A) MAX INPUT VOLTAGE AT INP-INN PINS (mV) 60 44 100 19.6 200 12.6 TYP TEMP RANGE OPERATING TEMP RANGE (°C) (°C) -20 to +60 -40 to +85 -20 to +60 -40 to +85 RECOMMENDED METER ACCURACY CLASS (%) MAX SHUNT RESISTANCE (µΩ) 1 736 1 0.5 0.
PAGE 19
71M6xxx Data Sheet REVISION HISTORY REVISION NUMBER 0 REVISION DATE 12/10 1 3/11 2 6/11 3 12/12 DESCRIPTION Initial release Figure 1, page 4 (transformer turns ratio 1:1.