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Hall and AMR Technology

Aug, 2012. Hall and AMR Technology. Agenda. Basic theory Product Portfolio Success story Q&A Back up. 0. N. I. S. I. V=0. +. V=Vhall. S. N. S. N. S. N. -. 2SS. 2SS. Theory of Operation. Hall-Effect Sensing Mechanism. Magnetoresistive (MR) Sensing Mechanism.

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Hall and AMR Technology

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  1. Aug, 2012 Hall and AMR Technology

  2. Agenda • Basic theory • Product Portfolio • Success story • Q&A • Back up

  3. 0 N I S I V=0 + V=Vhall S N S N S N - 2SS 2SS Theory of Operation Hall-Effect Sensing Mechanism Magnetoresistive (MR) Sensing Mechanism Current source is applied through a thin sheet of semiconductor material A magnetic field appliedparallel to the element changes its resistance and creates a current change Magnet A magnetic field applied perpendicular to the element creates a voltage change = Vhall MR is omnipolar - Either Pole will operate the Sensor Hall is generally bipolar - The output is pole-dependent, but it can be designed to be omnipolar(pole independent, e.g. next gen Hall SS351AT/SS451A)

  4. Comparison of Hall and AMR

  5. Digital Hall Block Diagram

  6. Magnetic Sensing Types DIGITAL • Bipolar • Typically requires 2 poles: One pole to turn ON, and opposite pole to turn OFF • Operate point to turn ON is typically +Gauss (South), release is -Gauss (North) • Although not typical, operate and release points may both be + (South) or • both – (North) Note: latching is not guaranteed • Bipolar Latching • True latching device, always requires 2 poles: 1 to turn ON, opposite to turn OFF • Guaranteed to turn ON with +Gauss (South) only, OFF with –Gauss (North) only • Unipolar • Only one pole required to operate and release the sensor • Turns ON with +Gauss (South) for all products, except SS3xx that turns ON with North pole • Will turn OFF when magnetic field is removed • Omnipolar • Operates with any pole (North or South) • Will turn OFF when magnetic field is removed • e.g. magnetoresistive sensors, or omnipolar Hall sensors ANALOG • Linear • Analog output proportional to magnetic field strength, operates with North or South. • Offset (Output at Zero Gauss) = Typically ½ of Supply voltage • +Gauss (South) will increase Vout, -Gauss (North( will decrease Vout

  7. Magnetic Sensing Types Bipolar: Typical graph is Sensor 2, but could also be Sensor 1 or 3 Latching: Typical Graph is only Sensor 2 Unipolar: Typical graph is Sensor 3, but it could be Sensor 1 in some cases Omnipolar: Typical Graph is Sensor 1 and Sensor 3 Digital • ** • Max OP–Gauss level which can guarantee to switch on the sensor; • Min RP- Gauss level which can guarantee to switch off the sensor; • Differential- OP-RP Analog

  8. Bipolar vs Bi-CMOS Fab Process Bipolar (Analog) • Used on legacy Hall designs • Improved matching (reduced offset) • Robust/rugged • Well-established Hall element design techniques • Digital circuits are possible with bipolar, but they are large and costly CMOS (Digital) • High impedance (low current draw) • Complex circuitry in small area • More precise analog switches • Analog circuits are possible with CMOS, but performance is inferior to bipolar • Competitors using CMOS fab process include Melexis, Micronas, and Diodes Bi-CMOS (Mixed Signal) •Allows the designer to choose the best from both technologies to combine high performing analog components with compact, low cost, low current digital circuitry • Competitors using Bi-CMOS include Allegro and Infineon

  9. Bipolar vs CMOS

  10. IC Assembly Process

  11. Typical HallICpackaging SOT-89 TO-92 (SIP-3) SOP-8

  12. July, 2012 Product Portfolio

  13. Hall/MR Product Line Overview 1st Level 2nd Level SS311PT SS30AT SS340RT SS351AT SS361RT SS50AT SS500 SS59ET SS552MT VF526DT SR17 SR16 SR13 SS40 SS41 SS400A SS400R/P SS490 VF401 VF431PP VF441P SR15 APS00B 2SS52M SS94 SOT-23, SOT-89, TO-92, 8 Pin SOIC, ceramicPackages

  14. 1st Level Hall & MR Sensors 2SS52M Digital Magnetoresistive SensorSS552MT SMT version SS400 Series Digital Hall & VF401 20Wire MR SS400R/SS400P Series Digital Hall(New) SS490 Series Miniature Ratiometric Linear Hall • Omnipolar magnetics • -40 to +150°C temp range • 3.8 to 30 VDC operation • High sensitivity (15 G operate) allows up to 1” sensing distance • Flat TO-92 type package • Low-cost: R and P series • -40 to +150°C temp range • Sinking output w/ bipolar or unipolar magnetics (Digital) • Sink/Source output (linear) • Hi & lo sensitivities available Applications Markets APS00B MR ±90° Hi-res Angular Displacement Sensor • Var Speed Drive, RPM • BDCM, Piston detection • Flux, current, flow meter • Valve/damper position • Tape drive head position • Drug dispensing control • Motion Control • Instrumentation • HVAC • InfoTech • Medical • Analog response • High resolution angular or rotary position sensing SS300 Series Digital Hall (New) SS94 Series High-performance Ceramic Linear Hall • SOT-23 subminiature surface-mount package • Low voltage 3 V operation • Reverse polarity protection • Low cost • Laser-trimmed resistors provide accurate specs and compensate temp variations • Sinking or sourcing output • -40 to +125°C temp range • ±100 to ±2500 G flux ranges • Sensing element in CSLA2 open-loop current sensors SS500 Series Digital Hall & VF526DT Speed & Dir SS59ET low-cost Linear Hall • SOT-89 type surface-mount package • -40 to +150°C temp range (digital) • 3.8 to 30 VDC operation (digital) • Same features as SS400-Series (digital) • Low-cost, good performance (linear)

  15. 1st Level Hall/MR Selection Guide

  16. 2nd Level Value-Added Hall & MR Assemblies SR16 / SR17 Low-Cost Hall Vanes 4AV Series Hall Vane • Compact, robust package, mechanically interchangeable w/Honeywell opto sensors • Operated by low-cost, easy to fabricate ferrous vane for accurate pulse counting • Packaged magnet & sensor protected from dust or dirt • Operated by low-cost, easy to fabricate ferrous vane • Tightly controlled magnetics provides accurate pulse width • Lead wire, PC-board, and 4-pin connector termination options • 40 to +125°C temp range Markets Applications • Sinking output w/medium level magnetics for stray field immunity • Industrial • Surface Transportation • Commercial/Medical • Wheel rotation/RPM • Pedal Movement • Throttle Position • Lever Position • Suspension • Gear shift position • RPM in fitness equipment • -20 to +85°C temp range • Non-contact sensing protected from dust & dirt 1GT Series High-performance Hall Gear-Tooth sensor VX10 / VX80 Solid State Switch • Plunger operated, non-contact digital output w/ direct interfacing to solid state circuits • Low force operation • Rugged construction, reverse voltage protection, tested to >100 M operations • Wide variety of std levers & actuators available • UL recognized, CSA certified • Back-biased Hall senses ferrous metal targets • 10 to 3600 RPM, output independent of RPM • -40 to +150°C temp range, +160°C short term • EMI resistant - Will operate in noisy environment • Built-in reverse polarity and transient protection Rely on Honeywell’s quality and experience

  17. Value-Added Hall & MR Assemblies 103SR Series Hall (Prox-Type) SR3 & SR4 Series Digital Hall (Prox-Type) • Metal bushing - Rugged, sealed, threaded, aluminum housing • Meets NEMA 1, 3, 3R, 3S, 4, 12 and 13 • Digital sink or analog output. • Unipolar, bipolar or linear magnetics, various sensitivities • -40 to 100°C temp range, • (up to -40° to 125° for some products) • Cable / connector options • Plastic housing w/color coded wires • Meets NEMA 1, 3, 3R, 3S, 4, 4X,12 and 13 • Sinking output w/ bipolar, unipolar (SR3) or omnipolar (SR4) magnetics Markets Applications • -40 to +85°C temp range • Cable / connector options • Material Handling • Packaging Machinery • Industrial • Surface Transportation • Commercial/Medical • Wheel rotation • Conveyor control • Motion encoding • Gear shift position • RPM in fitness equip. • UPS • Welding Equip SR13/SR15 Series Low-cost Hall Probes • Quick-mount plastic housing • Unipolar or bipolar magnetics, various sensitivities • -40 to +85°C temp range • Cable / connector options • Inexpensive position sensing alternative.

  18. Honeywell Magnetic Position Sensors Summary – Honeywell differentiators • Value-added and custom magnetic sensor capability (2nd level assemblies, packaging, cables and connectors, etc.) • Availability of low-cost products w/ Honeywell quality & performance (new 1st level platform, introduced in 2009-2010) • Alternative magnetic sensing technologies (Magneto Resistive) • Broad linear Hall portfolio (from low-cost SS49E to hi-perf SS94) • Advanced products (APS00B, VF401, VF526DT)

  19. Next Gen Hall Key Features & Benefits • New features • Low supply voltage (most: 3Vdc, some as low as 2.7Vdc) • SOT-23 subminiature SMT Package • Reverse voltage protection (all except sensors w/built-in pull-up resistor) • Omnipolar Hall • Unipolar and bipolar sensors with built-in pull-up resistors • Benefits • Low voltage capability helps reduce power consumption • Subminiature package supplied on tape and reel allows for a compact design with automated component placement, helping to reduce manufacturing costs • Built-in reverse polarity protection protects device from potential damage during installation • Omnipolar magnetics eliminates the need to know magnet polarity, potentially saving on magnet and assembly cost • Sensors with built-in pull-up resistors save eliminate the need to provide an external resistor, saving on component cost and PC board real estate.

  20. Honeywell Next Generation Hall Selection Guide

  21. SL353 Micropower Hall-Effect Sensor ICs – Features/Benefits • Energy efficient • Supply voltage as low as 2.2 Vdc, combined with very low average current (1.8 µA typ. for SL353LT), reduces power consumption, provides extended battery life, and promotes energy efficiency • Versatile • Omnipolar capability with high and low duty cycle options allows for use in many potential applications with low power requirements and/or battery operation, including motion control, lid closure detection, presence-absence, metering, and displacement sensing • Non-chopper stabilized design • Does not use chopper stabilization, eliminating noise generated by products using this technique • No unnecessary filters are needed to compensate for the noise, which minimizes board space, parts counts and costs • Stable • Thermally balanced integrated circuit provides for stable operation over a wide temperature range, from -40° to 85 °C [-40° to 185 °F] • Subminiature size • SOT-23 subminiature package size requires less PCB space, allowing for use in smaller assemblies

  22. SL353 Micropower Hall-Effect Sensor ICs – Features/Benefits • Price competitive • By using BiCMOS technology, Honeywell has been able to design a reduced size integrated circuit, saving on manufacturing costs while still meeting customer requirements; these savings can result in lower costs to customers • Helps reduce total system cost • Because these sensors can be operated by a North or a South pole, they do not require the magnet polarity to be identified, thus making installation easier and potentially reducing system cost • Reduces manufacturing costs • Supplied on tape and reel, often allowing for automated, lower-cost pick and place assembly which can help the customer reduce manufacturing costs • Simplifies interfacing • Push-pull output allows for easy interfacing with common electrical circuits without the need for a pull-up resistor • Compliant • RoHS-compliant materials meet Directive 2002/95/EC

  23. SL353 Micropower Hall-Effect Sensor ICs – Competition • Key competitors include Allegro’s A3211ELH and A3212ELH sensors, and Diodes’ AH180N-W sensor • Honeywell’s key competitive advantages include: • Honeywell’s slightly lower minimum supply voltage capability improves flexibility of use within the application and can help reduce power consumption • Honeywell’s lower active mode time, lower sleep mode current, and average current help to reduce power consumption and extend battery life • Does not need external capacitor to filter out chopper noise, potentially saving PC board space and cost • Push-pull output does not require external pull-up resistor, potentially saving PC board space and cost

  24. Low Power Hall Sensor Current Consumption

  25. July, 2012 Applications

  26. Magnetic Sensors Market & Applications

  27. SS341RT/SS441R • SS351AT/SS451A • SS30AT Medication bin and drawer monitor on portable drug carts, anemometer, electronic balance sensor, door latch on medical carts, fluid level float location; motor assemblies for medical equipment • Accurate position monitoring • Access control • Low audible noise • Value • Stability over temperature • Small footprint Speed detection of blower motors, brushless DC motors, pressure transducer bellows, damper / valve positioning (variable air volume) • SS361RT/SS461R • SS311PT/SS411P • SS30AT/SS40A • Accurate flow monitoring • Enhanced reliability, reduced repair costs • Easy integration • Enhanced energy efficiency Valves, flow meters for utilities/petro-chem, chemical, oil/gas, food/bev • SS343RT/SS443R • SS345PT/SS445P • SS311PT/SS411P • Easy integration • Enhanced durability, reduced maintenance • Enhanced energy efficiency Material handling, automation, machine control, variable speed drives • SS343RT/SS443R • SS345PT/SS445P • SS351AT/SS451A Steering angle position, window lift control, rotary position sensing, vehicle motor control, speed/RPM sensing, position control • SS341RT/SS441R • SS343RT/SS443R • SS345PT/SS445P • SS349RT/SS449R • Enhanced reliability, reduced repair costs • Value • Compact size • SS361RT/SS461R • SS311PT/SS411P • SS30AT/SS40A • SS341RT/SS441R • SS351AT/SS451A • Accurate position or RPM monitoring • Low power consumption • Small size • Lower cost Motor control, flow control, RPM sensing in fitness equipment, door lock sensing in appliances, lid closure detection in laptop computers and office equipment Potential Markets and Applicationsfor New Platform Potential Applications Customer Needs Market Products Hospital Hardware Medical HVAC Industrial Flow Control Motion Control Heavy duty vehicles, Agriculture, Construction Trans Appliances, Electric Bicycles & Scooters, Computers Other

  28. Motion Control – Magnetoresistive Position Sensors • Industry Leaders • Delco (AD) - USA • SICK - Germany • Balluff - Germany • ZhangJi - China • Gimatic – Italy • Fritsch - Germany • Embedded Control Products • Digital Magneto Resistive Sensors 2SS52M, SS552MT • Analog Magneto Resistive sensors – APS00B

  29. DC Motor basic theory

  30. BLDC

  31. Magnet (4-Pole Shown) N S S N H3 H2H1 BLDC Detect direction and speed based on three hall IC output clockwise • Hall IC： • Symmetry of high and low level output • Consistence of operate and release point • Good Electric strength Standard H1 Behind H1 H2 Behind H2 H3

  32. Controller +V Windings Driver Circuit Logic Circuit Hall Effect Bipolar Sensors Command Signal Logic Power +V Input Power AC or DC Power Supply Motion Control – Brushless DC Motors • Industry Leaders • Comair Rotron - USA • EBM - Germany • Pacific Scientific - USA • Tianma - China • Servo Magnetics - USA • Embedded Control Products • Hall Sensors – SS4 series, SS5 series, SS421 Series • Speed & Direction Dual Hall Sensors – VF526DT • Customised value added multiple sensor systems • Major Applications • Motor Controls for: • HVAC Fans • Computer Cooling Fans • Computer Disc Drives • Metering Pumps • Audio & Video Equipment

  33. July, 2012 Success Stories

  34. Success Story • Product • SS343RT (Next Gen Hall) • Industry • Industrial • Application • Sewing Machine’s Needle • How we won • Working with Design Engineer w/ full tech support • Right product- performance/price • Good customer relationship while compete w/ MELEXIS (US5881) • Value • US$50~60K/year* 2~3yrs • Product • SS311PT • Application • BLDC for toy (aircraft, car etc) • How we won • Good Price/performance, SOT-23 package with pull-up resister • early design in support Application, Performance, Customer Relationship

  35. Success Story • HON Ref: Hall Sensor SS443R • Application: handspike (The hall is used to stop the treadmill when someone pulls a magnet. The application is to protect the old man in the running process) • Competition: AKE, and AP local hall competitors • Why won: Technical support • Life size: $0.28 M • SOP: Q3, 2011

  36. Success Story: Next Gen Hall Sensors for Infusion Pumps • Product • SS49 , SS495A1 • Industry • Medical/Infusion Pumps • Application • One SS49 is used to determine the presence/absense of the cartridge • One SS495A1 is used to determine the amount of fluid delivered from the pump motor. • How we won • the sensor performed better in the application than the current Allegro part • Right product- Omnipolar sensor , do not need to identify the poles of the magnet • Good customer relationship • Value • US $125,000 over 5 years

  37. Success Story • Product • SS30AT (Next Gen Hall) • Industry • Industrial • Potential rev 200KUSD • Application • Tubular Motor • What I do • Working with Design Engineer w/ full tech support • Right product- performance/price

  38. Success Story • HON Ref: Hall Sensor SS413A • Application: E-bike motor (Tricycle) • Competition: AP local hall competitors (AH product and SX products) • Why won: Quality, Honeywell reputation • Life size: $0.66 M • SOP: Q3, 2011

  39. Success Story • Product • SS541GT • Industry • Transportation • Application • Shifter position • How we won • Product performance (e.g. sensitivity) • Working with Design Engineer w/ full tech support • Right product- performance/price • Good customer relationship while compete w/ Allegro • Value • US$60~ 70K/year* 3yrs Application, Performance, Customer Relationship

  40. Success Story • Product • SS59ET (Linear Hall) • Industry • Industrial • Potential rev 140KUSD • Application • Drain pump for washing machine • What I do • New application • Working with Design Engineer w/ full tech support • Right product- performance/price

  41. Success Story • Product • SS466A (Bipolar Latch Hall) • Industry • Appliances • Potential rev 450KUSD • Application • Running machine • Competitor • Allegro: A3281 • What I do • Working with Design Engineer w/ full tech support • Design and manufacture test equipment for the customer • Right product- performance/price

  42. Success Story • Product • SS59ET (Linear Hall) (12pcs per set) • Industry • Appliances • Potential rev 100KUSD • Application • Money Counter • What I do • New market and application • Working with Design Engineer w/ full tech support • Design and choose right magnet for the customer • Right product- performance/price

  43. Success Story • HON Ref: Next Gen Hall SS466A • Application: Brushless DC Motor for fan • Detect the position of the rotor to control and switch the power supply • Competition: Allegro • Why won: lead time and phase out of the Allegro’sproduct • Life size: $ 3.12 M • SOP: 4Q 2011

  44. Project of design in-won • Product: • SS543AT • Amount rev: 116KUSD • Application: • Cash register • What I do: • Working with Design Engineer w/ fully • tech support. • Provide right product to customer. • Product: • SS526GT • Amount rev: 100KUSD • Application: • Tubular motor • What I do: • Working with Design Engineer w/ fully • tech support. • Provide right product to customer. • Product: • SS413A • Amount rev: 158.4KUSD • Application: • Speed sensor • What I do: • Working with Design Engineer w/ fully • tech support. • Provide right product to customer. • Product: • SS41 • Amount rev: 100KUSD • Application: • Micro motor • What I do: • Working with Design Engineer w/ fully • tech support. • Provide right product to customer.

  45. Project of design in-won • Product: • SS495A1 • Amount rev: 480KUSD • Application: ATM • What I do: • Working with Design Engineer w/ fully • tech support. • Provide design of magnetic field for customer. • Provide right product to customer. • Product: • SS443R (2pcs per set) • Amount rev: 280KUSD • Application: • Massage machine • What I do: • Working with Design Engineer w/ fully • tech support. • Provide right product to customer. • Product: • SS40AF • Amount rev: 921.6KUSD • Application: • PG motor • What I do: • Product training for the customer. • Provide right product to customer. • Product: • SS49F • Amount rev: 180KUSD • Application: • Handle bar • What I do: • Provide right product to customer.

  46. Potential Application • Product • SS361RT • Industry • Transportation • Application • Shifter position • How we won • Product performance (e.g. sensitivity) • Working with Design Engineer w/ full tech support • Right product- performance/price • Good customer relationship while compete w/ Allegro • Value • US$30~ 50K/year* 3yrs • Typical customer • ECS (2~3pcs per set) *Source- sea/pac sales team

  47. Potential Application Mouse wheel controller 2pcs unipolar hall sensor at each side Intelligent mouse example Plus another 2pcs linear hall

  48. Q & A

  49. Back Up- Tools / Selection Guides

  50. 常见的几种磁铁材料 铁氧体是一种具有铁磁性的金属氧化物。铁氧体硬磁材料磁化后不易退磁，因此，也称为永磁材料或恒磁材料。如钡铁氧体、钢铁氧体等。它主要用于电信器件中的录音器，拾音器、扬声器，各种仪表的磁芯等。这类材料在较弱的磁场下，易磁化也易退磁， 因此在铁氧体软磁材料通常用于电子元器件和磁记录材料。 钐钴磁铁主要是由金属钴、钐和其它一些稀土元素构成的一种高性能的永久磁铁，其优点是最高工作温度可达300摄氏度，矫顽力大，同时具有很强的抗腐蚀和抗氧化性。因此钐钴磁钢通常不需要作电镀处理，且被广泛应用在马达、仪表、传感器、探测器、发动机、雷达及其他高科技领域。 钕铁硼(NdFeB)磁铁也叫钕磁铁，是在80年代开发的第三代稀土磁铁, 是目前磁力最强的稀土磁铁。极好的磁性和稳定性使得钕铁硼得以迅速的发展及广泛的应用。在很多领域比如仪器仪表, 汽车工业, 石油化工产业和磁性医疗保健产品方面，它取代了传统的铁氧体，铝镍钴，钐钴。

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