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High Speed, High Resolution Rotary Position Sensor AS5147P

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The AS5147P is a high-resolution rotary position sensor for high speed (up to 28krpm) angle measurement over a full 360 degree range. This new position sensor is equipped with a revolutionary integrated dynamic angle error compensation (DAEC™) with almost 0 latency.
The robust design of the device suppresses the influence of any homogenous external stray magnetic field. A standard 4-wire SPI serial interface allows a host microcontroller to read 14-bit absolute angle position data from the AS5147P and to program non-volatile settings without a dedicated programmer.
Incremental movements are indicated on a set of ABI signals with a maximum resolution of 4096 steps / 1024 pulses per revolution. The product is defined as SEooC (Safety Element out of Context) according ISO26262 including FMEDA, safety manual and third party qualification.

Publicada em: Tecnologia
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High Speed, High Resolution Rotary Position Sensor AS5147P

  1. 1. Confidential © ams AG 2015 High Speed High Resolution Rotary Position Sensor AS5147P
  2. 2. Confidential © ams AG 2015 Page 2 Product segment matrix Magnetic Position Sensors Product Click on the part # to get the datasheet Position measurement Motor Control Linear Rotary on-axis Rotary off-axis Rotary on-axis Rotary off-axis incr. abs. incr. abs. incr. abs. incr. abs. incr. abs. AS5304 | AS5306 AS5311 | NSE5310 AS5510 | AS5013   - - -  - - - - - -   - - - - - - - - - -   - - - - AS5040 | AS5045B AS5045 | AS5048 AS5050A | AS5055A AS5047D | AS5047P AS5600 AS5601 - - - - - - - - - - - -  - -  -        - - - - - - - - - - - -  - -  - -  - -  - - - - - - - - - - - - - - AS5132 | AS5134 AS5115 | AS5215 AS5147 | AS5247 AS5147P AS5161 | AS5162 AS5261 | AS5262 - - - - - - - - - - - - - -   - - - -     - - - - - - - - - - - -     - -     - - - - - - - - - - - - - -  product portfolio  new products − not applicable/available LinearRotary
  3. 3. Confidential © ams AG 2015 Page 3 Internal Comparison / Improvements AS5147P AS5147 AS5147P Core Resolution [bit] 14 14 Maximum speed [rpm] 14.500 28.000 Encoder resolution [bit / deg] 11 / 0.18 12/ 0.09 Encoder pulses max. 512 (bin) max. 1024 (bin) INL [deg] +-1 +-1 Noise [deg rms] 0.06 0.06 System propagation delay [us] Output readout rate at SPI 1.9* 1.9* DAE @1.7/14.5k/28k rpm 0.02*/0.17* 0.02*/0.17*/0.35* Output interfaces SPI, PWM ABI, UVW SPI, PWM ABI, UVW ISO26262 conform No SEooC according ISO26262 * DAEC™ … Dynamic Angle Error Compensation
  4. 4. Product Overview / Key Features AS5147P Benefits • Easy to use – Low latency & High refresh Rate • Lower system costs (no shielding) • High resolution for motor & position control • Simple replacement – reduce system cost • Fast high resolution position feedback • Provides absolute & incremental angle measurements • Supports safety challenging applications Key features • DAEC™ Dynamic Angle Error Compensation • Immune to external stray magnetic fields • 14-bit core resolution • Encoder output: 1000 / 1024 pulses • Maximum speed up to 28.000 rpm • SPI, PWM, UVW and ABI Interfaces • SEooC according ISO26262 • AEC-Q100 qualified Applications • Electric Power Steering (EPS) • Gearbox and Brake Actuator • Starter & Alternator and Pump Motor • BLDC/PMSM motor commutation • Rotary position sensors
  5. 5. Confidential © ams AG 2015 Page 5 AS5147P - (“SEooC”) according ISO26262 Safety element out of context ISO26262 SEooC flow: Product developed with assumed safety goal / ASIL level - Safety Analysis of the architecture - Sensor development in adherence to ISO26262 - User Guide: Safety Manual to achieve ASIL - Development process evidence - PPAP - Safety Plan - Certifications - Certification by independent certification company - Safety support - Customer refined FMEDA - FIT Rate - Safety Manual - Pin-FMEA Document - Application Notes - Support concept phase at customer - Support integration at customer Certified by independent ISO 26262 certification company SEooC according ISO 26262 to support ASIL Level X FMEDA FIT Calculation Safety Manual Fully qualified sensor AEC Q-100 Grade0 Sensor developed with Safety Goals
  6. 6. Confidential © ams AG 2015 Page 6 DAEC™ - A Revolutionary solution AS5147P - Integrated Dynamic Angle Error Compensation™(DAEC™)– patent published Dynamic Angle Error Hardware Compensation integrated! No Software needed! External HW + SW compensation needed MagneticPositionSensorSystem MPS … Magnetic Position Sensor
  7. 7. Confidential © ams AG 2015 Page 7 DAEC Dynamic Angle Error Compensation AS5147P benefits No DAEC: Error increases with rpm! DAEC reduces the error to almost zero! Low Latency High Output refresh rate No DAEC: slow refresh rate - additional error DAEC: Correct angle at correct time! Competition AS5147P Control loop Error High output refresh rate !
  8. 8. Confidential © ams AG 2015 Page 8 Stray field immunity ams patented differential principle H2 H4 Hall 0 [V] Volts 1 2 3 4 external magnetic stray field Vdiff 1 = Vdiff 2 Note: … considering homogeneous external magnetic stray field
  9. 9. Confidential © ams AG 2015 Page 9 AS5147P Application Example for EPS Torque measurement, hand wheel, and motor position and control AS5147P - Motor position sensor (On-Axis)  Fast digital Interfaces; SPI, ABI, UVW, and PWM  Accuracy ≤ 1.0o; with 14 bits resolution  Max RPM  up to 28K  Fast refresh rates/low latency; 1.9 µs Torque and hand wheel Sensor unit [TAS] EPS Motor Motor position sensor IC controls commutation of brushless DC motor. Torque sensing requirements [TOS] Hand wheel position requirements [SAS] (On-Axis or Off-Axis)
  10. 10. Confidential © ams AG 2015 Page 10 • Commutation feedback for brushless DC motor • Provides fast and accurate measurements  At startup: provides phase coil information via UVW signals  At speed: provides position measurement via SPI or ABI signals • Eliminates the need for discrete hall sensors in stator AS5147P Enables Efficient Motor Commutation Brushless DC (BLDC) Motor - preferred choice for EPS
  11. 11. Confidential © ams AG 2015 Page 11 AS5147P Technical Advantages Advanced magnetic position sensors in Electronic Power Steering (EPS) applications Superior durability through contactless “system-on-chip” solution  No wear  High reliability  Insensitive to humidity, dust, dirt, etc. Lower Systems Cost  Small surface mount  Wide mechanical tolerances reduce manufacturing costs  End-of-Line Sensor Programming for lower production costs High Accuracy  Rotary position error accuracy of < ±1.0o
  12. 12. Confidential © ams AG 2015 Page 12 AS5147P Technical Advantages (Cont.) Advanced magnetic position sensors in Electronic Power Steering (EPS) applications DAEC  Low latency  High refresh rate Increased Functional safety via on-sensor diagnostics  Enabler for safety critical applications (ISO26262 safety standard)
  13. 13. Confidential © ams AG 2015 Page 13 Competitive Product Positioning AS5147P Angular Position Sensor AS5147P Competitive ICs Provides ultra-low latency, very fast output refresh rates, stray field immunity, and high accuracy performance, while reducing system costs and enabling improved ISO 26262 system safety compliance. Provides ultra-low latency, fast output refresh rates, stray field immunity, and high accuracy performance, while enabling reduced system costs. AS5147P vs Competitive ICs AS5147P vs Discrete Sensors Angular Position Sensor AS5147P Discrete Sensors
  14. 14. Confidential © ams AG 2015 Page 14 Competitive Positioning against Competitive IC Solutions AS5147P The AS5147P rotary position sensor IC provides ultra-low latency, superfast output refresh rates and high accuracy performance at reduced system costs. Angular Position Sensor AS5147P Competitive ICs  Unlike competitive rotary position sensors ICs, the AS5417P.  Is immune to stray magnetic fields for improved performance and lower system costs (no shielding required)  Has ultra-low intrinsic propagation delay and noise for better accuracy performance  Provides an extremely fast output refresh rate of just 1.9usecs  Supports very high speed rotational shaft applications  Provides sub +/-1.0o angle measurement accuracy over temperature  Requires a smaller target magnet for lower system costs  Is packaged in a low profile (1.0mm nom) height TSSOP-14.  Provides robust customer configurability, including zero-position location, for end-of-line programming
  15. 15. Confidential © ams AG 2015 Page 15 Competitive Positioning Against Discrete Solutions AS5147P Provides ultra-low latency, stray field immunity, and high accuracy performance, while reducing system costs and enabling improved ISO 26262 system safety compliance.  Unlike discrete motor commutation solutions, the AS5147P.  Provides high speed motor position information and motor commutation feedback in a single device.  Enables higher levels of ISO 26262 system safety compliance.  Has lower system costs with elimination of discrete Hall switches  Is immune to stray magnetic fields for improved performance and lower system costs (no shielding required)  Is singularly packaged in a low profile (1.0mm nom) height TSSOP-14. Angular Position Sensor AS5147P Discrete Solutions
  16. 16. Confidential © ams AG 2015 Page 16 • AS5147P-TS_EK_AB SAP#: 990600830 • AS5147P-TS-EK-MB SAP# 990600xxx • USB I&P BOX SAP# 990600795 • SD4Y-EK-XX-PB SAP# 990600763 Adapter Board AS5147P Motor Board USB I&P Box SD4Y Programmer Support Tools AS5147P
  17. 17. Confidential © ams AG 2015 Page 17  DAEC™  Stray field immunity  Excellent price-performance ratio  Immunity to harsh environments  SEooC according to ISO26262  Ease of Use Videos: AS5147P Value Proposition Summary
  18. 18. Confidential © ams AG 2015 Thank you! Please visit our website www.ams.com/Magnetic-Position-Sensors

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