TMR Sensors - GLYNshop
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Selection Guide for Automotive and Industrial Applications TMR Sensors
Transcript of TMR Sensors - GLYNshop
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Selection Guide for Automotive and Industrial Applications
TMR Sensors
TAS 214x, TAS 414xTMR-Bridge Angle Sensor for Position Sensing Applications
TAS 214x and TAS 414x are pure TMR-bridge angle sen-sors which allow absolute angle measurement of up to 360°. Based on the Tun-nel Magneto-Resistive (TMR) effect, they offer high sensi-tivity and best angle accuracy needed for demanding auto-motive applications. Stability in a wide range of tempera-ture, supply voltage and mag-netic field variations is also achieved. In combination with a microcontroller and a small piece of software these sen-sors offer outstanding angular measurement performance.
Features
•Specialized angle sensor for use under harsh environ-mental conditions.
•High reliability and low FIT rates allow operation in safety-critical applications
•Simple circuitry and low number of external compo-nents allow fast and easy development.
•Diagnostic capability through direct monitoring of the sensor elements.
•In combination with simple algorithms running in microcontrollers, the remain-ing very low angular drift over temperature can be compensated and allows to be operated in the complete magnetic field range without any changes in angular precision.
Physical Characteristics
•Recommended supply volt-age range: 3 V to 5.5 V
•Current consumption 2 mA / 4 mA at 5 V
•Wide temperature range: −40 °C to +150 °C
•Wide magnetic field range: – 20 mT to 80 mT (standard range) – 20 mT to 120 mT with lower accuracy – higher magnetic fields with restrictions – Angle accuracy: ±0.6 to 0.8 deg.
Typical Applications
•Absolute rotary angle sensor
•EPS motor-shaft angle sensor
•EPS angle sensor
•Throttle position sensor
•Resolver replacement
Benefits
•Very high output differential voltages (1.5 VPP or 3.0 VPP) at VSUP = 5 V, allow direct connection to ADCs and pro-vide high signal resolution over temperature
•Simple IC-controlled read-out of analog voltages
•Compliant to ISO 26262: supports ASIL D on system level (TAS 414x).
•No external trimming com-ponents required
•Suitable for operation with wide range of supply volt-ages
•Small single-mold packages available: – TSSOP8 for TAS 214x – TSSOP16 and QFN16 for TAS 414x
•AEC-Q100 qualified
Selection by Application – AutomotiveTAS 214x, TAS 414x
Packages of TAS 214x and TAS 414x
TAS 414x
5 ± 0.2
4.4
± 0
.2
6.4
± 0
.2
1.0
± 0
.1
0.10
± 0
.05
0.65
TAS 214x
4.4
± 0
.2
6.4
± 0
.2
1.0
± 0
.1
0.08
± 0
.05
0.65
3 ± 0.2
Pin connections of TAS 214x and TAS 414x
TAS 214x
TAS 414x
Vcc Sin
Vcc Cos
Out Sin1+
Out Sin1-
Out Cos1+
Out Cos1-
GND Sin
GND Cos
Vcc Sin 2
Vcc Sin 1
Out Sin1+
Out Sin1-
Out Cos1-
Out Cos1+
Out Sin2+
Out Sin2-
Out Cos2+
Out Cos2-
GND Sin1
GND Sin2
GND Cos1
GND Cos2
Vcc Cos 1
Vcc Cos 2
Internal circuitry of TAS 214x and TAS 414x
TAS 214x
VCCVCC Cos-Sin-
GNDSin+ Cos+GND
TAS 414x
VCC1VCC1 Cos1-Sin1-
GND1Sin1+ Cos1+GND1
VCC2VCC2 Cos2-Sin2-
GND2Sin2+ Cos2+GND2
TAD 2140, TAD 2141High-Precision TMR Angle Sensors with Digital Output
TAD 2140 and TAD 2141 are TMR angle sensors which al-low absolute angle measure-ment of up to 360°. Based on the Tunnel Magneto-Resistive (TMR) effect, they offer high sensitivity and best angle ac-curacy needed for demand-ing automotive applications. The internal digital signal pro-cessing allows outstanding angular measurement per-formance. Stability in a wide range of temperature, and magnetic field variations is also achieved.
The sensors are pre-calibrated at manufacturing and addi-tionally offer in-application calibration modes. The “Static compensation” targets the elimination of angle errors caused by mechanical mis-alignment between magnet and sensor. These correction parameters are programmed at EOL. In 360° multi-turn operation, TAD 2140 and TAD 2141 achieve excellent angle accuracy by using the “Dynamic compensation” mechanism, which eliminates magnetic, temperature, and life-time effects.
TAD 2140 and TAD 2141 sup-port various output interfaces such as UVW (Hall Switch Emulation Mode), PWM, ENC (Encoder Mode), SPI or SENT. To reduce system costs, TAD 2140 integrates six ca-pacitors and one resistor. They act as filter components and provide increased dura-bility and automotive system level EMC/ESD protection.
Features
•Two TMR bridges including signal processor unit in one TO6 or TSSOP16 package
•Various and configurable digital outputs: – UVW (Hall Switch Emula-tion Mode) – PWM – ENC (Encoder Mode) –SENTSAEJ2716JAN2010revision 3 (TAD 2140) – SPI (TAD 2141)
•High EMC/ESD performance for automotive system level EMC (TAD 2140)
•ASIL-B ready device with several diagnostic func-tions and status reporting (TAD 2140)
•Internal diagnostic capability including direct monitoring of the sensor elements
•Continuous in operation self-tests: – Magnet loss detection – Maximum rotation speed detection – Over/undervoltage detec-tion – Internal sensor fails – Signal processing super-vision – Register CRC
Physical Characteristics
•Performance-dependent current consumption down to 12.5 mA
• Wide operating tempera-ture range: TJ = −40°Cto175°C
•Wide magnetic field range: – 20 mT to 80 mT (standard range) – 80 mT to 130 mT with lower accuracy
•Lowest deviation of angle error of just ±0.05°
•Guaranteed angle accuracy of ±0.2° (in multi-turn ap-plication)
Typical Applications
•BLDC motor commutation e.g. for EPS
•Absolute angle sensor
•Resolver replacement
Benefits
•Fast response, high angular accuracy, and advanced compensation algorithms
•Compliant to ISO 26262: supports ASIL B on system level (TAD 2140)
•No PCB required (TAD 2140)
TAD 2140, TAD 2141
ECU
ENCAPH1
ENCBPH2
ENCZPH3
PWM/SENT
Controler Unit
AFE
XTMR
YTMR
ADC
ADC
Digital
Interface
ENC
HSM
PWM
SENT
NVM (OTP)
DSP
Osc Diagnostics
R1
C6
C2C3C4C5
C1
Power Supply
Test
Protection
Bx, By
IF4
GND
VCC
IF3
IF2
IF1
Power supply
Productpin
CW TMRSensor
Elements
Block diagram of TAD 2140
TMR Bridges
VCCVCC Cos-Sin-
GNDSin+ Cos+GND
TAD 2141
0.22
5typ
.0.
170±
0.05
5.0±
0.2
1.0±0.1
0.6±0.15
0.10±0.05
0.65
4.4±0.2
6.4±0.2
0.20
+0.
1–
0.05
TAD 2140
TMR bridges of TAD 2140/2141 Packages of TAD 2140 and TAD 2141
Block diagram of TAD 2141
to ECU
GND
Power Supply
Controler Unit
AFE
XTMR
YTMR
ADC
ADC
Digital
Interface
ENC
HSM
PWM
SPI
NVM (OTP)
DSP
Osc Diagnostics
Power Supply
Test
Protection
Bx, By
GND
IF1
IF2
IF3
IF4
IF5
CW
VCC
VDDINT
TMRSensor
Elements
Analog Sensors Digital Sensors
Product Name TAS 2141 TAS 2143 TAS 4140 TAS 4141 TAS 4142 TAD 2140 TAD 2141
Number of TMR Bridges
2 4 2
Angular Position Detection− On-Axis
YES YES YES YES YES YES YES
Angular-Position Detection− Off-Axis
YES YES − YES − YES −
Angle Error±0.6°
or less±0.8°
or less±0.6°
or less±0.8°
or less±0.8°
or less±0.2°
or less±0.2°
or less
Output
Analog, Differential
1.5 VPP Sin & Cos
Analog, Differential
3.0 VPP Sin & Cos
Analog, Differential
1.5 VPP Sin & Cos
Analog, Differential
3.0 VPP Sin & Cos
Analog, Differential
3.0 VPP Sin & Cos
Digital (SENT, PWM,ENC,UVW)
Digital(SPI,
PWM,ENC,UVW)
Number of Outputs
4 4 8 8 8 4 4
Temperature Range
TA= −40...150 °CTJ=
−40...175 °CTA=
−40...150 °C
Magnetic Field Range
20...80 mT (typical) 80...130 mT (extended range)
Detection Range
360°
Redundancy − − YES YES YES − −
Self- Diagnosis − − − − − YES YES
Integrated DSP (FSM) − − − − − YES YES
Integrated Capacitors − − − − − YES −
Pac
kag
es
TSSOP8 YES YES − − − − −
TSSOP16 − − YES YES YES − YES
QFN-16 − − − − YES − −
TO6 − − − − − YES −
Samples Available
TMR Sensor Applications in a Car
Steering Torqueand Angle Sensor
BLDCMotor Position
Wiper Actuator
Clutch / E-Clutch Power SteeringMotor Commutation
Selection of Sensor Type
Analog Sensors Digital Sensors
Product Name TAS 2141 TAS 2143 TAS 4140 TAS 4141 TAS 4142 TAD 2140 TAD 2141
Number of TMR Bridges
2 4 2
Angular Position Detection− On-Axis
YES YES YES YES YES YES YES
Angular-Position Detection− Off-Axis
YES YES − YES − YES −
Angle Error±0.6°
or less±0.8°
or less±0.6°
or less±0.8°
or less±0.8°
or less±0.2°
or less±0.2°
or less
Output
Analog, Differential
1.5 VPP Sin & Cos
Analog, Differential
3.0 VPP Sin & Cos
Analog, Differential
1.5 VPP Sin & Cos
Analog, Differential
3.0 VPP Sin & Cos
Analog, Differential
3.0 VPP Sin & Cos
Digital (SENT, PWM,ENC,UVW)
Digital(SPI,
PWM,ENC,UVW)
Number of Outputs
4 4 8 8 8 4 4
Temperature Range
TA= −40...150 °CTJ=
−40...175 °CTA=
−40...150 °C
Magnetic Field Range
20...80 mT (typical) 80...130 mT (extended range)
Detection Range
360°
Redundancy − − YES YES YES − −
Self- Diagnosis − − − − − YES YES
Integrated DSP (FSM) − − − − − YES YES
Integrated Capacitors − − − − − YES −
Pac
kag
es
TSSOP8 YES YES − − − − −
TSSOP16 − − YES YES YES − YES
QFN-16 − − − − YES − −
TO6 − − − − − YES −
Samples Available
TDK Corporation is a leading electronics company based in Tokyo, Japan. It was estab-lished in 1935 to commercialize ferrite, a key material in electronic and magnetic prod-ucts. TDK’s comprehensive portfolio features passive components such as ceramic, alu-minum electrolytic and film capacitors, as well as magnetics, high-frequency, and piezo and protection devices. The product spectrum also includes sensors and sensor systems such as temperature and pressure, magnetic, and MEMS sensors. In addition, TDK pro-vides power supplies and energy devices, magnetic heads and more. These products are marketed under the product brands TDK, EPCOS, InvenSense, Micronas, Tronics and TDK-Lambda TDK’s further main product groups include magnetic application prod-ucts, energy devices, and flash memory application devices. TDK focuses on demand-ing markets in the areas of information and communication technology and automotive, industrial and consumer electronics. The company has a network of design and manu-facturing locations and sales offices in Asia, Europe, and in North and South America. In fiscal 2018, TDK posted total sales of USD 12 billion and employed about 103,000 people worldwide.
About TDK Corporation
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-203
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. 201
8
ContactTDKEuropeGmbH•D-81617Munich(Germany)
Tel.+4989540200•E-mail:[email protected]•www.tdk.eu
