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www.silabs.comwww.silabs.comwww.edom-tech.com
Silicon LabsIsolator Production & Application
Agenda
Isolation 101
Silicon Labs isolator product introduction
Isolator Product Application
2
Agenda
Isolation 1011.1 What is isolation1 2 Where Isolation is Used1.2 Where Isolation is Used1.3 Why Isolation is Important1.4 What is Safety Certification?1.5 Key Safety Terminology & Certification1.6 Isolation Techniques 1 7 Summary1.7 Summary
Silicon Labs isolator product introduction
Isolator Product ApplicationIsolator Product Application
3
What is Isolation?
SYSTEM
SUPPLY VOLTAGE A
SUPPLY VOLTAGE B
ISOLATIONBARRIER
DC DCSignal Xfer
BARRIER
No current flow
GROUND A
GROUND B
Galvanic isolation electrically insulates sections of electrical circuits, preventing current flow between these sections
Th bili h i f i b h i iThe ability to exchange energy or information between the sections is maintained
4
Ideal Isolator Model
Input/output signal path behaves as a low impedancep
GND1-to-GND2 path is high impedance
ISOLATORIN OUT
VDD2VDD1
OROR
Net result:Input signal is transferred to output
GND2GND1
Input signal is transferred to output, regardless of common mode difference
No current flow between GND1 and GND 2 (This reduces noise)
GND2GND1
5
Where Isolation is Used
Isolation is used in many applications to:Protect equipment from damage, and protect personnel from injuryQuiet ground noiseQuiet ground noise Level-shift signals between various parts of the system for compatibility
Isolation is used in many different marketsso at o s used a y d e e t a etsIndustrial Automation• Isolated communications, power conversion, analog data acquisitionEnergyEnergy• Solar panel inverters, motor control, high voltage power generationTransportation• Isolated HEV/EV inverters and battery chargersMedical Systems• Isolated ECG/EKG, defibrillators, portable patient monitoringMilitary Systems• Isolated power conversion, instrumentation, weapons systems
6
Why Isolation is Important
I l ti i iti l tIsolation is a critical componentSafety of electronics systems or peopleImproved performance in noisy environments
Common isolation usage examples
e.g. HV Power Systems e.g. High Side Driver e.g. Test and Measurement
Safety Isolation: Isolate potentially lethal voltage from low voltage groundLevel Shift: Match signal amplitude and common mode voltage levels
8
Level Shift: Match signal amplitude and common mode voltage levels Eliminate Noise: Isolate high noise grounds from noise-sensitive circuits
Key Safety Terminology (Reference)
Safety extra-low-voltage: < (30VRMS or 60VDC)
Hazardous: > (30VRMS or 60VDC)
Basic InsulationSingle-level of protection against electric shock. Does not fail safe, must be contained within system. Creepage
Distance along the insulating surfaceReinforced/Double InsulationTwo-levels of protection against electric shock. Fails safe, can be accessible external to system.
Rated (Proof) Isolation Voltage
Distance along the insulating surfacean arc may travel
Rated (Proof) Isolation Voltage Maximum voltage an isolation barrier withstands(Typically 2500 , 3750, or 5000 VRMS @ 1 min)
Production Test VoltagegManufacturer’s test voltageTypically 1.2x the Rated Isolation Voltage
ClearanceShortest path through air
an arc may travelTypical Guidelines
Insulation Type Creepage/Clearance Proof (Rated)Test Production TestBasic 3.2 mm 2500Vrms (1 min) 3000VRMS (1 sec)
yp
9
( ) RMS ( )Reinforced/Double 6.4mm 5000Vrms (1min) 6000VRMS (1 sec)
What is Safety Certification?
Safety is regulated by a set of international safety standards whose test methods and guidelines ensure end equipment safety from electrical shock, mechanical hazard, fire and electromagnetic interference.mechanical hazard, fire and electromagnetic interference.
There are component (IEC60747-5-2) and system level (e.g. IEC60950) safety standards, and all compliance testing (system or component) is performed by international regulatory agencies (e.g. UL, CSA VDE, TUV, etc.)
System Standard Component Standard
Application StandardOrganization IEC
60204Industrial 60204 60604
InformationTechnology 60950
International U.S. Canada
Organization VDE UL CSA
EquipmentMedical 60601Household 60065
Standard IEC 60747-5-2 1577 Component Notice 5A
10
Measurementand Control 61010
Telecom 60950
What Does the System Spec Require?All system certifications have 3 basic requirements for a given working voltage.
Insulation typeCreepage/clearance Distance requirementIsolation Barrier Test Voltage
Specification Working Voltage Insulation Creepage Clearance Test Voltage Vac (1 Minute)Specification Working Voltage Insulation Creepage Clearance Test Voltage Vac (1 Minute)
IEC601‐1 250 Vac
Basic 4 2.5 1600
Reinforced 8 5 4200IEC601 1 250 Vac Reinforced 8 5 4200
IEC60950‐1 300 Vac
Basic 3.2 2 2400
Reinforced 6.4 4 4800
IEC61010‐1 300 Vac
Basic 3 3 2210
Reinforced 6 6 3536
Knowing the Creepage/clearance Requirements allows designer to select the best
* Pollution Degree 2, Cat III (6kV over transient)
11
g p g q gpackage for the application at hand
Isolation Techniques
Isolation Component Opto- coupler Capacitive Transformer GMR
Isolation Dielectric Epoxy Silicon Dioxide Polyimide PolyimideIsolation Barrier
p y y y
Construction Vertically stacked for efficient light coupling
Laterally stackedCMOS integrated capacitors
Laterally stackedMEMS process for transformer coils
Laterally stackedSpecial process for magneto-resistive structure
CI-O pF range fF to pF range pF range pF range
CouplingMechanism
Technique Optical E-field B-field B-field
Input circuit LED CMOS CMOS + coil CMOS + coilInput circuit LED CMOS CMOS + coil structure
CMOS + coil structure
Output circuit Photo-transistor, diode, triacs
CMOS CMOS + coil structure
CMOS + magneto-resistive structurestructure
12
Inside an Opto-coupler
IN OUTLight pathPhoto
D t t
Clear InsulatingShieldOutput Die
GND
Insulating film or dielectric
DetectorLED
LED
Isolation Barrier – Mold compoundOrganic, less stable over temperature, humidityLow quality dielectric – higher defects, breakdown is 50V/μmBottom line: Intrinsic reliability is lower than SiO2, but may compensate due to “more thickness”
Coupling Technique Optical on Ga As type processCoupling Technique – Optical on Ga-As type processLED switching causes• Low switching frequencies, higher latency, higher skew/jitter• Photon efficiency degrades with time, temperaturePhoton efficiency degrades with time, temperature • Very difficult to fit multiple channels in small package (shielding)• No antennae (coils) - very low emissions, high immunity• Immune to data errors & intrinsic high noise rejection but low immunity to
transients may cause false switching
13
transients – may cause false switchingGa-As technology• Not amenable to SoC type integration
Inside a Magnetic Coupler
EN
CO
DE
R
DE
CO
DER
E
R
Isolation Barrier – Polyimide (PI)Organic, highly permeable to moistureLower quality dielectric – breakdown is 250V/μmBottom line: Lower intrinsic reliability
Coupling Technique – Magnetic on CMOS substrate and MEMSMiniature transformer coils cause
R l ti l f t it hi l l t l k /jitt• Relatively fast switching, low latency, low skew/jitter• Lower channel density: 3 die MCM• Higher emissions and lower immunity• Output does not unconditionally follows input, data errors possible due to edge detection and latched architecturep y p , p g
CMOS + MEMS technology• Not amenable to SoC type integration
14
Inside a Capacitive Isolator (Si8xxx)
Isolation Barrier – Silicon-Dioxide (SiO2)Inorganic, stable over temperature, humidity, high quality dielectric – low defects, breakdown is 500V/μmArchitecture uses 2 smalldifferential pairs per channel electric field is reducedArchitecture uses 2 smalldifferential pairs per channel, electric field is reducedBottom line: High Reliability
Coupling Technique – Capacitive on 0.25μm process technologySmall & 2 differential capacitors per isolation channel• Fast switching, low latency, low skew/jitter• Up to 6 channels in 16 pin SOIC narrow body• No antennae (coils) - very low emissions, high immunityFully differential, RF ON/OFF Key (OOK) modulation technology• Output unconditionally follows input when device is powered • Highly immune to data errors compared to edge detection and latched architecture• High noise rejection due to differential methodCMOS technology
15
CMOS technology• Allows integration with MCU’s, high performance ADC’s, Interface (USB, CAN, RS-485)
What Specifications Concern Customers?
Isolation voltageMaximum voltage across isolator;
OUTIN
Impacts system’s safety
Common mode transient ISOLATOR
GND1 GND2
VCM
immunityImmunity to transients;Impacts Error-free data transmission
Prop delay across isolatorSpeed across isolator;
VDDIDD
Speed across isolator; Impacts loop stability & response in control applications
ISOLATOR
OUTIN
VDD
Supply currentPower consumption; I t t ffi i
16
GND1 GND2Impacts system power efficiency
Summary
Galvanic isolation “insulates” sections of electrical circuits to prevent current flow between the sections, but maintains the ability to exchange energy or information between the sections.
The most common isolation uses are:Safety Isolation: isolate potentially lethal voltage from low voltage groundSignal Level Shift: match signal amplitude and common mode voltage levelsSignal Level Shift: match signal amplitude and common mode voltage levels Ground Noise Reduction: isolate high noise grounds from noise-sensitive circuits
Safety is regulated by international safety standard test methods and y g y yguidelines.
Component and system level safety certifications are performed by regulating agencies• The most common system standard specifications are 61010 (Test and Measurement), 60950
(Telecom), and 60601 (Medical)
The certification engineer decides which standard (i.e. system or component) to use for qualification.p ) q
System design engineer is responsible for the proper creepage and clearance distances
17
Agenda1. Isolation 101
2. Silicon Labs isolator product introduction2.1 Si84xx/86xx/87xx Product Portfolio2.2 Support Resource
3. Isolator Product Application
18
Digital Isolation Product Portfolio
• Certified UL, CSA, VDE (up to 2.5kV)• Low EMISi84xx• High timing accuracy• Very high reliability• Best for: isolating data
SMPS, Telecom, White Goods,
General Purpose
• Si84xx isolation performance PLUS:• Reinforced (60950-1) and medical (IEC
60601-1)U t 5kV i l ti
Si86xxIndustrial, Medical • Up to 5kVrms isolation
• Improved noise tolerance• Best for: isolating data
Medical, Automotive,
Solar
• Si86xx safety performance PLUS:• Reinforced VDE/IEC (10kV surge)• Drop-in upgrades for popular optocouplers
B t f hi h f t d (l
Si87xx Industrial, Medical,
• Best for: high-performance opto upgrade (long life, high reliability and data rates)
General Purpose
19
Si84/86xx Isolator Family
1 – 6 Channel Digital Isolatorsan
nels
vers
eC
hpo
rts R
ev I2C Isolators
Sup
p
Si84xx support 1, 150 Mbps & 1, 2.5 & 5kV (5kV for 1,2 channels only)Si86xx support 150 Mbps for 3.75, 5 kV rating.
20
Silicon Labs Isolators – A broad family for a variety of needs
Si86xx Digital Isolator Enhancements
Lower frequency oscillators for lower power operation and even lower EMI
Up to 6 isolation channels rated at
Tighter receiver band pass for improved CMTI: 35kV/uS(min), 50kV/uS(typ)
even lower EMI channels rated at 5kVRMS
Improved regulator for 40x higher PSRR
Faster output buffer with exactly 50 ohm output termination for tighter output impedance
oror
OSCVREG OSC VREG
output impedance matching
Si86xx Isolator Channel
Isolato
Tx
Isolato
Rx BUFINPUT OUTPUT
Schmitt trigger input for higher input noisehigher input noise rejection. Higher ESD rating: 8kV (HBM)
Minimum operating VDD = 2.5V
Robust ESD clamp on I/O’s
5kV isolation, improved noise rejection, industry-leading CMTI, higher ESD!
VDD 2.5V
21
, p j , y g , g
Si86xx Achieves Higher Slew Rates
Si84xx
VDD
R
RC 1
T i R t 2 V/
C
RC = 1μs
Trigger Rate = 2 V/μsGND
VDDR
Si86xxC
RC = 40ns
Resd
Trigger Rate = 50 V/μs
S ESD t ti 25 d d iti it t VDD i
GND
Resd
22
Same ESD protection, 25x reduced sensitivity to VDD noise
Si87xx Opto-isolator Replacement Family
Pin-compatible with digital open collector optosNote: No reverse bias of LED emulator No pin compatibility with 4 pin optos
3.75 and 5 kV reinforced isolation ratingsVDE reinforced – 10kV surgeUL, CSA
Performance and reliability advantages vs. optosResistant to temperature, age and forward current effects10X lower FIT rate for longer service lifeHigher Transient Immunity: >50 kV/μs typicalLower power and forward input diode current
Wide range of product optionsWide range of product optionsLow power or higher performanceSmall package (4mm) to extra wide (10mm)Integrated pull-up, Output enable
ApplicationsIndustrial automation, PLC Motor controls and drives
23
Isolated switch mode power suppliesIsolated data acquisitionTest & measurement equipment
Si87xx Opto-isolator Replacement Overview
Si8710xD-A-IS isolatorsLow power (A) or high performance (B) options
A: 3mA input, 1MbpsB: 6mA input, 15Mbps
Wide SO-6 package5kVrms isolation5kVrms isolation10kV surge rating!
Si8710xx-A-IS isolatorsLow power (A) or high performance (B) options( ) p
A: 3mA input, 1MbpsB: 6mA input, 15Mbps
SO-8, LGA-8, PDIP/GW-8 packages3.75kV & 5kV isolation10kV surge rating
24
Si87xx Opto-isolator Replacement Overview
Si8711xx-A-IS isolatorsOutput pull-up integrated (20k)p p p g ( )SO-8, LGA-8, PDIP/GW-8 packages
3.75kV & 5kV isolation 10kV surge rating!
Low power and high performance options
Si8712xx-A-IS isolatorsOutput enable (VE)Output enable (VE)SO-8, LGA-8, PDIP/GW-8 packages
3.75kV & 5kV isolation10kV surge rating
Low power and high performance options
25
Si84/6/7xx Comparison
Feature Si84xx Si86xx Si87xx
VDD max 6V 7V 30V
VDD transient tolerance 2 V/µs 50 V/µs 50 V/us
Output current 10mA 22mA
Schmitt trigger inputs No Yes N/A
CMTI 25 kV/µs 35 kV/µs 30 KV/us
VDD min 2.7V 2.5V 3.0V
EMI Best in class 5 dB better
2 5kVIsolation rating
2.5kV(5kV for 1,2 ch only)
3.75kV & 5kV 3.75kV, 5kV
PackagesSO-8 (NB)SO-16 (NB & WB)
SO-8 (NB)SO-16 (NB, WB)
SO-8 (NB)SO-6 (wide)DIP 8 (GW)
g ( )QSOP-16
( , )QSOP-16
DIP-8 (GW)LGA-8 (extra wide)
Cross partsp
Silicon Labs’ broad isolator portfolio insures that the right d i i il bl f li ti !
26
device is available for any application!
Turnkey Tools Get You Started TodayE al ation kits streamline testing directl in o r s stemEvaluation kits streamline testing directly in your system
Si84xxISO-KIT• Quick evaluation of 6
Si86xxISO-KIT• Quick evaluation of 6
Si82xx-KIT• Quick evaluation of 4Quick evaluation of 6
different isolators from the Si84xx family
different isolators from the Si86xx family
Quick evaluation of 4 different isolated drivers from the Si82xx family
Reference designs explore new applicationsSi86ISOLIN-KIT ISOVOLT35-KIT SI890xPWR-KIT
• Three cost/performance optimized analog isolation circuits
• Isolated DC/DC converter and isolated digital channels
• Isolated power line monitoring with analog or digital output
isolation circuits
27
And more… http://www.silabs.com/products/power/isolators/Pages/DevelopmentTools.aspx
Isolator Product SupportData sheets are j st the beginning of hat’s a ailable onlineData sheets are just the beginning of what’s available online
Tools to locate the right part, get designed in, and debug available 24/7Comprehensive knowledge base of common issues
Access to Silicon Labs’ world class application support teamAccess to Silicon Labs world-class application support team
Web Tools Application Notes• Isolator Knowledge Base• Parametric Search• Technical Support
pp• AN375: Isolated I2C Design • AN634: Power Supply
Considerations pp• Competitor Cross Reference • AN583: Safety Considerations
and Layout Recommendations
White Papers• RF Isolators Supersede
Optocouplers
User’s Guides• Discrete Isolated DC-DC
Converter Reference DesignOptocouplers• CMOS Advanced Isolators for
Medical Electronics• Low EMI Isolation for Medical
Converter Reference Design• Si86xxISO EVB• Si86xx IsoLinear
28
Equipment Applications
Agenda1. Isolation 101
2. Silicon Labs isolator product introduction
3. Isolator Product Application3.1 Data Acquisition3.2 Bus Isolation3.3 Diagnostics and Imaging3 4 Solar Inverters & Smart Power Systems3.4 Solar Inverters & Smart Power Systems3.5 Hybrid Electric Vehicles (HEV)3.6 Battery Management System (BMS)3 7 Th Ph M it3.7 Three-Phase Monitor
29
Key Target Applications & Challenges
• Reliability• Low EMI, high immunity
INDUSTRIALFactory Automation
C &, g y
• Tight timing specs• Safety certification
Motor Control & DrivesMedical
Security/HVAC
• Reliability• High voltage withstand
GREEN ENERGYS l (PV) I t High voltage withstand
• Extended temperature range• High Integration
Solar (PV) InvertersSMPSUPS
• Low EMI• ReliabilityAUTOMOTIVE Reliability• Extended temperature range• Safety certification• Pin compatibility
EV/ HEV Battery ControlChargers
CAN Bus isolation
30
• Pin compatibility
Data Acquisition
Isolating an A/D converter output from its input provides significant benefits
P t t l lt i it
Isolated Serial ADC
Protects low voltage circuitryEliminates noisy ground loopsReduces the impact of common mode noise Isolated Serial ADCReduces the effect of high voltage transientsBridges incompatibilities in interface voltage levels 3.5
Electric Field Immunity Comparison with Competitionvoltage levels
Products to targetDigital isolatorsF t I ADC C t 2 0
2.5
3.0
3.5
e (V
)
Future: Iso-ADC, Current sensors
Why We WinReliability
0 5
1.0
1.5
2.0
Out
put v
olta
ge
FailPass
Low EMI, high immunity Tight timing specsSafety certification
-0.5
0.0
0.5
0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000
31
RF Field Frequency (MHz)
Bus Isolation
Industrial Buses form the network between sensors & actuators to controllers
5-10W VDD1:
High Power Brick
Low power IsolatedVDD2
RS-485 or CAN based
Products to targetDigital isolators
Si8xxxDigital Isolator XCVR
CPU
Sensor inputs
PressureTemp.Flow
Digital isolatorsFuture: IsoVolt
3V/5V Digital Domain Isolated Field Side
Why We WinReliability, High Voltage LifetimeLow EMI, high immunity Tight timing specsSafety certification
32
Silicon Labs
Competitor1
competitor2
E-Model Lifetime
60 years < 10 years 28 years
Diagnostics and Imaging
Medical electronics is integral part of clinical procedures
Safety & reliability are key due to liability & long product lifetimeliability & long product lifetimeProduct certification and compliance to IEC 60601-1 is keyLow EMI is key performance metric for sensitive circuit components
Products to targetDigital isolatorsFuture: IsoVolt
Why We WinReliabilityLow EMI high immunity
> 15 dB higher emissions > 20 dB higher emissions
Low EMI, high immunity Safety certification
Com
petit
or 1
(T)
Com
petit
or 2
(A)
33
Solar Inverters & Smart Power SystemsS l P I tSolar Power InverterAC
AppliancesSolar Panels
Inverter
ChCharge controller
Customer challengesMeet 25 year system lifetimeMaximize efficiency
Why Si8xxx winsSuperior MTTF vs. optosISOdrivers: Adjustable dead time
34
Maximize efficiencyCompatibility w/ 240 VAC
ISOdrivers: Adjustable dead time 5 kV isolation ratings
Hybrid Electric Vehicles (HEV)Hybrid Electric Vehicles utilize a battery system that works with an Electric Motor Drive System to power an automobile
Silicon Labs’ isolation solutions provide higher levels of integration and performance stability compared to digital optocouplers and opto + gate driver solutionsp g p p p g
Critical need is higher working voltages (upto 1000VDC) reliability, AECQ100 qual, PPAP support
High Voltage Electronic Control Unit (HVECU)
Digital Isolators (CAN Bus)
A/C ElectricA/C
Analog and/or Digital Isolators
(V, I Data)
Digital Isolators
(CAN Bus)ECM
(Engine Control Module)
Analog and/or Digital Isolators(Temperature)
ISO
ISOISO
Digital Isolators or ISOdrivers
(IGBT Gate Drive)
(CAN Bus)
ISO A/C Electric Inverter
CompressorInverter
A/C Inverter
ISO
Digital or Analog Isolators
(Control Loop)
Digital or Analog Isolators
(V,I Data) MG1Temp Sensor
Temp Sensor
ISO
ISO
ISO
ISO
ISO
Boost Converter
Inverter Assembly
DC/DC Converter
AuxBattery
Digital Isolators or ISOdrivers
(IGBT Gate Drive)
Digital and/or Analog Isolators (Batt V, I Data)
Digital Isolators (CAN Bus)
CurrentAnalog Isolator (Current Signal)
Digital Isolators (Control Interface)
DRIVE TRAIN
Engine MG2
Front Wheels
Transaxle
ISO
35
Battery ECU
ISOISOCurrent SensorISO
(Current Signal)
HV Battery
ISO Analog Isolator (Voltage Signal)
DRIVE TRAINISO
Battery Management System (BMS)
BMS is critical for Li batteries used in EV/HEV to
Maintain the battery, protect the ll d l b tt lifcells and prolong battery life
Isolation needed between cells and to vehicle control system (CAN bus)
Products to targetDigital isolators (Si86xx)Isolated gate driversIsolated gate drivers
Why we winLow EMIReliability & safetyC t t ti t tCustom automotive type supportPin compatibility
> 15 dB higher emissions > 20 dB higher emissions
etito
r 1(T
)
titor
2(A
)
36
Com
pe
Com
pet
SMPS
PRIMARY POWER STAGES
SECONDARY POWER STAGES
Switched mode power supplies are ubiquitous, provide higher efficiencies
ServersCONTROLLER DRIVERServers
UPSIndustrial inverters
ISODRIVER
DRIVERProducts to target
Digital isolators (Si86xx)Isolated gate driversIsolated gate driversCurrent sensorsIsolated ADCs
IsoDriver Feature BENEFITTwo-wire or PWM input versions Connects directly to controllers of all types
Why we winHighest Feature IntegrationLow latency
Two-wire or PWM input versions Connects directly to controllers of all types
Programmable dead time control Allows user to “tune” system for peak efficiency
Overlap protection Higher efficiency, greater safety
DISABLE input Facilitates local ON/OFF control/protectionLow latencyHigh noise immunity
Input & output UVLO Glitch-free start-up/shutdown
Fast propagation timing More timing margin and/or faster control loop response
1500 VDC isolation (out/out) Wide application range
37
Three-Phase AC Line Monitor Solutions
Very high power applications are powered by three-phase AC lines.
E l d li ti hi h tExample end applications: high power motor control, machine automationThree-phase line monitoring is widely used to
t t l d d t tprotect personnel and down-stream systemsEach of the three phases must be monitored separately
Silicon Labs isolation can be use to solve a wide range of customer problems, including three phase AC line monitoringincluding three-phase AC line monitoring
The following application diagrams show how to implement low cost and reliable isolated three-
h it l ti i th Si87phase monitor solutions using the Si87xx, Si84xx/Si86xx
38
Low Cost AC Line Monitor Using Si87xx
AC
RLIM 1
Si87xx OptoPro Isolator
OPT
OEM
ULA
TOR
ISO
LATI
ON
Receiver BUFFER
AC Phase A
AC AC
Si87xx OptoPro Isolator
TO ATO
R
ATI
ON
Receiver
RLIM 2
AC Phase C
AC Phase B
BUFFER Sig
nals
OPT
EMU
LA
ISO
LA
Receiver BUFFER
Isol
ated
Out
put S
Si87xx OptoPro Isolator
OPT
OEM
ULA
TOR
ISO
LATI
ON
Receiver
RLIM 3BUFFER
Output Signals
Only one phase is shown
This example uses the Si87xx to sense each phaseThe output signal is centered within the incoming AC mains waveform
Th b fi i li i l l d
39
The benefits are simplicity, low-cost, lowest component count and high reliability
Three-Phase Monitor Using Si84xx/Si86xx
put S
igna
lsIs
olat
ed O
utp
This example uses a 3 channel isolator to sense all phasesOperating performance is similar to the low cost monitor shown earlier
The benefits are integrated isolation and high reliability
40
益登科技——Silicon Labs全产品线代理商EDOM各地联系方式:EDOM各地联系方式:
上海 Tel:86-21-3367-5222
深圳 Tel:86 755 8358 8188深圳 Tel:86-755-8358-8188
北京 Tel:86-10-5172-7850
西安 Tel 86 29 6859 6685西安 Tel:86-29-6859-6685
成都 Cell: 86-134-0287-3180
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香港 Tel:852-2763-0966
台北 Tel:886-2-2657-8811
41
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