MSP430 Energy Meter IC solutions for Electricity Meters

Smart Grid Series

Q3, 2012

Smart Grid Series

Enery Metering Applications

• Utility meters: vertical– Residential electrical meters– Commercial and industrial electrical meters– Electrical Vehicles charging stations

• Sub-metering: broad– Smart Plug– Power Distribution Units (PDU)– Server power– Smart Appliances– Trend in the smart home/smart building

MSP430 energy meter IC portfolio facts and update• 15 years experience - Large portfolio today from 1-phase

to 3-phase

• MSP430AFE very popular in metering and sub-metering applications

• Recently introduced device MSP430F6736 getting a lot of traction

• Two new series are in early samples stage

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Energy Meter IC market trend• Utility meters :

– 500 Millions residential electricity meters will be deployed with the next 6-10 years

– Meters are becoming smart with communications functions changing electrical meters requirements

– Need for robustness, anti-tamper, low-power consumption, integration– 3 big classes

• Need for system cost optimization “just measure energy”: Analog Front End (AFE)• Need for system cost optimization “just measure energy”: Analog Front End (AFE)• Need for low-end Metrology SoC (ADC metrology + MCU core+ LCD + RTC) ~ from 12kB to

64kB Flash range• Need for higher integration Metrology SoC (memory up to 256kB/512kB, encryption, 1-phase, 3-

phase)

• Sub-Metering :– Consumers want to take control of their energy consumption– Concept of smart-home and smart building is rising– It starts by measurement energy in a simple way: AFE approach– Grid connected appliances

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Smart Home: Grid Connected Appliance• New ENERGY STAR

specification effective January 2013

• Provide alerts and future demand response capabilities for appliances for

• MSP430AFE253: sensing + RF com interface• Strong interest from appliance manufacturers WW

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capabilities for appliances for the consumer to save energy

Sub-Meter Block Diagram

Metrology AFE = Sigma Delta + MCU + RTC• small memory foot print, lower cost than SoC

Topoloy for a mid -end electrical meter

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Metrology SoC = Sigma Delta + MCU + RTC + LCD• Memory up to 128kB flash with growing requirements with 256kB+• Encryption coming-up (AES128)

What You can get from TI?• Single Stop System Solutions (all types of meters,

interfaces/AMR/PLC/Wireless, LPRF, Analog)

• Broad line of chips to cover every smart grid requirement

• Always Ultra Low Power – no need in expensive power supplies

– Low Power Cap Drop based power supply with MSP430 (cost effective)– Low Power Cap Drop based power supply with MSP430 (cost effective)

• TI delivers all the protocols you may need: DLMS/COSEM, M-

Bus, Wireless M-Bus, PLC G3/PRIME, ZigBee (all IPs), etc

• Robust roadmap with F67xx platform helping customers to

manage multiple designs using one platform

• Technical SW/HW Support, Ref. Designs, Metrology SW

MSP430AFEPerformance• 16-bit RISC architecture, 125ns instruction cycle time• Ultra-Low-Power, Integrated Analog, and Easy-to-Use

Features• Low supply voltage range 1.8-3.6V• Ultra-low power in active and sleep modes and ultrafast

wake-up from standby mode in <1 µs• 3 independent Σ∆ converters• USART communication• 24-pin TSSOP (PW)

Benefits

Applications include:- Single phase e-meter (with anti-tampering)- Power Monitoring (Servers, Appliances, Branch Meters)- High-precision measurements- Digital Sensors

16-bit RISCOrthogonal

MCU8 MHz

MSP430AFE2xx Microcontroller

Memory16/8/4 kB Flash

512/512/256 B RAM

Debug

Real-time JTAG / SBW

Embedded Emulation

Power & Clocking

Clock System:• High Freq Crystal Osc• Digitally Controlled

Osc (DCO)• VLO

Power on ResetBrownout Reset Supply Volt SupervisorBenefits

• Cost optimized for analog front end in metering, power monitors, high-precision measurements

• <0.1% accuracy for precise measurements with a 2400:1 dynamic range with Σ∆ convertors

• Anti-tampering capabilities with an additional Σ∆

convertor• Lower system power due to world’s lowest power MCU• Small Footprint of 24-pin (35-50sqmm) enables

solutions for in-system power monitoring and industrial sensoring

• More robust performance and software development with simultaneous sampling

Peripherals

Supply Volt Supervisor

Serial InterfaceUSART (UART, SPI) @8MHz

Connectivity11 I/Os

16-bit Timer A with 3 cap-comp Regs

Timers16-bit Multiplier

15/16 bit Watch Dog Timer

Converters3x Sigma-Delta

AFE 430 Results• Provide raw data of voltage and current samples • Energy

– Active– Reactive– Apparent

• Power– Active– Reactive– Apparent– Apparent

• Power factor ( ) • Voltage and Current

– Peak – RMS

• Frequency• Temperature• Tamper detection• Energy pulse output for calibration for active and reactive energies

)cos( ϕϕϕϕ

Target accuracy 0.1% for active and reactive energies

Objective Benefit Feature

Simple & Cheaper implementation

Needs only one IC instead of two to implement designs

Single MCU solution

Accuracy More accurate ADC architecture enables meeting IEC specifications easily

24 bit ∆-∑ ADCs

Example of Competitive Advantages of MSP430AFE2xx

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Ease of useFull code and metering algorithm

provided to help those who are unfamiliar with metering

TI's Energy Library

Time to marketSaves time & money

Calibration flexibility for sub metering

applications

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AFE For Single-phase E-meter with Tamper detection

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MSP430 AFE EVM

• EVM creation completed• Early samples available today• SW testing in progress• Based on MSP430 AFE+MSP430

Apps processor• Tool available by mid February

20112011

MSP430 Energy Watchdog

• Fully functional smart plug tool allows quick and efficient development

• Measurements performed / displayed

– Incoming voltage, current, frequency– Active, reactive, apparent power– Power factor

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– Power factor– Energy consumption

• MSP430AFE253IPWR• Interface to optional comm modules

– ZigBee– Sub-1 GHz 802.15.4– Wireless M-Bus

• Will be available in the future

EVM definition

MSP430F6736 – 24 new devices starting at $2.00

Applications• Single phase e-metering• High-precision measurements• Anti-tampering

16-bit RISCOrthogonal

MCU

25 MHz

MSP430F6736 Microcontroller

Memory

Up to 128 kB Flash

Up to 8 kB RAM

Debug

Real-time JTAG / SBW

Boot Strap Loader

Embedded Emulation

Power & Clocking

Clock System:•Dig’l Freq Lock Loop•Intrnl Trim’d LF Osc•External 32KHz Clk•High Freq Crystal Osc

Power on ResetBrownout Reset

Supply Volt Supervisor2 Aux. Power Supplies

LDO

Performance• 16-bit RISC architecture, 40ns instruction cycle time• Ultra-low-power, integrated intelligent peripherals

and easy-to-use

24 New Devices• Industry’s largest segmented LCD controller• Up to 2MHz SD24 modulation frequency • 3x auxiliary power supplies

Larger Flash

Serial Interface

3x eUSCI_A (UART, IrDA, SPI)1x eUSCI_B (SPI, I2C)

Connectivity74 I/Os; 54 I/Os

4x 16-bit Timer A with 2 cap-comp Regs

RTC w/ Backup Battery

Timers

16-bit Basic Timer

3 ch internal DMA

32-bit Multiplier

320 segment LCD

15/16 bit Watch Dog Timer

Converters3x 24-bit Sigma-Delta

10-bit ADC

and easy-to-use

Lowest Power in the Industry• Low Supply Voltage Range 1.8 V to 3.6 V• Ultra-low Power Consumption (@ 3V)

• Active Mode: 140 µA/MHz• Standby Mode: 2.5 µA• Off Mode: 1.6 µA• Shutdown Mode: 0.78 µA

• Ultrafast wake-up from standby mode in < 3 µs

Package• 100-pin QFP (PZ)• 80-pin QFP (PN)

Peripherals

Starting at $2.00 @ 1Ku

Multiple Communications

Interfaces

Why MSP430 for Electricity meters?Objectives Benefits FeaturesSystem Cost Optimization

Remove need for level conversion

Sigma Delta with Differential Inputs

Simplify and reduce power design

Ultra-low power (0.1uA power-down, 0.8uA standby mode, <220uA/MIPS)

High level of integration RTC and LCD driver integrated

Optimized implementation Optimized 1-phase AFE

Time to market/Accuracy

No SW compensation for inherent delay between

Sigma Delta with simultaneous sampling for current and voltagemarket/Accuracy inherent delay between

voltage and currentsampling for current and voltage

Better numerical result Hardware MPY

Ease of use and quicker time to market

Energy library and plug and play EVM

Anti-tamperimplementation

Additional measurement Numerous SD combination up to 7 for three-phase systems

Easy interfacing Provides Easy options to interface with LR RF or wired coms

Various Serial Communication ports interfaces

Flexible long term platform

Software and Hardware re-use

1-phase and 3-phase platform with pin to pin compatibility options + roadmap

Get started: simplify development with tools and software

• Supports all metrology and SoCdevices in the new MSP430™ architecture

• Allows easy startup for customers developing a utility meter product

Energy Software LibraryDevelopment Tools

www.ti.com/430metering

meter product• MSP-TS430PZ100B - $75

Standalone target board used to program and debug

• EVM430-F47197 3-phase meter EVM

• MSP430F6736 Single-phase Meter EVM

• AFE tool – under qualification

• Watchdog

Free online download of the SW suite

MCU Selection Tool

TI’s metroSUITE metrology software• Compliant with EN 50470-1/3, IEC62053-21/22/23, ANSIC12.1/10/20

• MID compliant (class-2, class-1, class-0.5)

• Including metrology lib, power analytics lib and energy disaggregation lib

• Available: Q2/2013

metroSUITE High-Level APIs

Application Examples

Energy

Watchdog

Smart Meter

2.0

Test Suite

1 Phase

Test Suite

3 Phase

me

troS

uite

OSAL Library

Multirate Usage Record RF CommTemper/Failure detection

Silicon Libraries: Device Driver Lib, Utility Lib

HAL Layer APIs

Metrology Library

Energy Pulse

USCI

SPI/UART

ADC

SD24BGPIOLCD WDT Timer

me

troS

uite

OS

AL A

PIs

Buffer

Mngr

Task

Message

Queue

Task

Scheduler

Energy Calculation Meter Mode (Normal/Limp)

ADC

SAR10

Metrology Utility Lib

Host Communication

Conversion/Read/Write

(LCD/Flash/EEPROM)

Metrology Math

RTC

• TI Smart Grid Homepage:

– www.ti.com/smartgrid• Application Notes• Software/Code Examples• Reference Designs

Finding more information

• Videos:– http://www.ti.com/ww/en/smart_grid_solutions/smart_grid_videos.htm

• Smart Grid Blog:– http://e2e.ti.com/group/energy/default.aspx

• Contact smartgrid@ti.com