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Position Sensor. IPS2550 Datasheet

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Position Sensor. IPS2550 Datasheet
















IPS2550 Sensor. Datasheet pdf. Equivalent













Part

IPS2550

Description

Inductive Position Sensor



Feature


Inductive Position Sensor IC IPS2550 Da tasheet Description The IPS2550 is a m agnet-free, inductive position sensor I C that can be used for high-speed absol ute position sensing in automotive, ind ustrial, medical, and consumer applicat ions. The IPS2550 uses the physical pri nciple of eddy currents to detect the p osition of a simple metallic target tha t is moving above .
Manufacture

Renesas

Datasheet
Download IPS2550 Datasheet


Renesas IPS2550

IPS2550; a set of coils, consisting of one transm itter coil and two receiver coils. The three coils are typically printed as co pper traces on a printed circuit board (PCB). They are arranged such that the transmitter coil induces a secondary vo ltage in the two receiver coils, which depends on the position of the metallic target above the coils. A signal repre sentative of the t.


Renesas IPS2550

arget’s position over the coils is obt ained by demodulating and processing th e secondary voltages from the receiver coils. The target can be any kind of me tal, such as aluminum, steel, or a PCB with a printed copper layer. The IPS255 0 provides two independent output inter faces:  A high-speed analog interfac e providing position information in the form of demodulated a.


Renesas IPS2550

nalog sine/cosine raw data  An I2C di gital interface for diagnostics and pro gramming The IPS2550 operates at rotati on speeds up to 600000 RPM (relating to coil designs using 1 period per turn). An ultra-low propagation delay of 4µs provides high dynamic control for fast spinning motors. The IPS2550 has been developed according to ISO26262 for imp lementation in safety.





Part

IPS2550

Description

Inductive Position Sensor



Feature


Inductive Position Sensor IC IPS2550 Da tasheet Description The IPS2550 is a m agnet-free, inductive position sensor I C that can be used for high-speed absol ute position sensing in automotive, ind ustrial, medical, and consumer applicat ions. The IPS2550 uses the physical pri nciple of eddy currents to detect the p osition of a simple metallic target tha t is moving above .
Manufacture

Renesas

Datasheet
Download IPS2550 Datasheet




 IPS2550
Inductive Position Sensor IC
IPS2550 Datasheet
Description
The IPS2550 is a magnet-free, inductive position sensor IC that
can be used for high-speed absolute position sensing in auto-
motive, industrial, medical, and consumer applications. The
IPS2550 uses the physical principle of eddy currents to detect the
position of a simple metallic target that is moving above a set of
coils, consisting of one transmitter coil and two receiver coils.
The three coils are typically printed as copper traces on a printed
circuit board (PCB). They are arranged such that the transmitter
coil induces a secondary voltage in the two receiver coils, which
depends on the position of the metallic target above the coils.
A signal representative of the target’s position over the coils is
obtained by demodulating and processing the secondary voltages
from the receiver coils. The target can be any kind of metal, such
as aluminum, steel, or a PCB with a printed copper layer.
The IPS2550 provides two independent output interfaces:
A high-speed analog interface providing position information
in the form of demodulated analog sine/cosine raw data
An I2C digital interface for diagnostics and programming
The IPS2550 operates at rotation speeds up to 600000 RPM
(relating to coil designs using 1 period per turn). An ultra-low propa-
gation delay of 4µs provides high dynamic control for fast spinning
motors.
The IPS2550 has been developed according to ISO26262 for
implementation in safety-relevant systems up to ASIL C for a single
IC and ASIL D for dual, redundant ICs. It is available in a 16-pin
exposed pad TSSOP package and qualified for automotive use
at -40°C to +160°C ambient temperature.
Available Support
Renesas provides reference designs that demonstrate IPS2550
rotary position sensing applications.
Typical Applications
Rotor position detection for brushless DC motors; adaptable
to any pole pair count
Replacement of resolvers
Features
Position sensing based on an inductive principle
Cost-effective; no magnet required
Immune to magnetic stray fields; no shielding required
Suitable for harsh environments and extreme temperatures
Differential and single-ended sine and cosine outputs
Automatic gain control with programmable limits
Nonvolatile user-configurable memory, programmable via I2C
interface
Programmable through analog or digital interface
Single IC supports on-axis and off-axis rotation, linear motion,
and arc motion sensing
Adaptable to any full-scale angle range through coil design
High accuracy: ≤ 0.1% full scale (with ideal coils)
Rotation sensing up to a 360º angle range
Over-voltage and reverse-polarity protection:
±18V on both supply and output pins
Facilitates redundant design requirements
Suitable for implementation in safety-related systems
compliant to ISO26262 up to ASIL-C on a single IC and
ASIL-D on dual ICs
Fast diagnostic alarm via interrupt pin
Wide operation temperature: -40 C up to +160°C
Supply voltage programmable for 3.3V±10% or 5.0V±10%
Small 16-TSSOP exposed pad package (4.4mm 5.0mm)
Application Circuit Example
1
ADR_IRQN
Rx
(sin)
Rx
(co s)
Tx
2
RX1
3
RX2
4
RX3
5
RX4
6 TX1
CT 7
TX2
8
VDDA
CVA
16
SDA
15
SCL
14
SIN_SCL
13
SINN
12
COS_SDA
11
COSN
10
VDD
9
GND
3.3V / 5V
CVDD
© 2021 Renesas Electronics Corporation
1
September 8, 2021




 IPS2550
IPS2550 Datasheet
Contents
1. Pin Assignments...........................................................................................................................................................................................5
2. Pin Descriptions............................................................................................................................................................................................5
3. Receiver Coil Connection Options................................................................................................................................................................7
4. Absolute Maximum Ratings..........................................................................................................................................................................9
5. Operating Conditions....................................................................................................................................................................................9
6. Ambient Temperature Range .....................................................................................................................................................................11
7. Electrical Characteristics ............................................................................................................................................................................12
8. Circuit Description ......................................................................................................................................................................................19
8.1 Overview............................................................................................................................................................................................20
9. Sampling Rate, Resolution, Output Data Rate, and Propagation Delay.....................................................................................................22
10. Output Modes .............................................................................................................................................................................................23
11. Operating at High Speed ............................................................................................................................................................................23
12. Digital Diagnostics and Programming Interfaces........................................................................................................................................24
13. Block Diagram ............................................................................................................................................................................................25
14. Detailed Block Descriptions........................................................................................................................................................................26
14.1 Power Management ..........................................................................................................................................................................26
14.2 LC Oscillator ......................................................................................................................................................................................26
14.3 Analog Signal Path ............................................................................................................................................................................26
14.3.1 Rx Coil Diagnostics ............................................................................................................................................................26
14.3.2 Receiver Signal Low-Pass Filter.........................................................................................................................................26
14.3.3 Offset and Gain Matching...................................................................................................................................................26
14.3.4 Demodulation .....................................................................................................................................................................26
14.3.5 Automatic Gain Control (AGC) ...........................................................................................................................................27
14.4 Signal Channel Swapping .................................................................................................................................................................27
14.5 Output Buffers ...................................................................................................................................................................................27
14.6 Temperature Sensor..........................................................................................................................................................................27
15. ECU Connection Options ...........................................................................................................................................................................28
15.1 Embedded vs. Remote Connection ...................................................................................................................................................28
15.2 Supply Voltage Operation: 3.3V or 5V...............................................................................................................................................29
15.3 I2C Interface ......................................................................................................................................................................................30
15.3.1 I2C with Address Selection (Programming Option) ............................................................................................................30
15.3.2 Avoiding a Parasitic Path through ADR_IRQN Pin during Loss of GND or Loss of VDD ...................................................30
15.3.3 I2C Interface with Interrupt (Programming Option).............................................................................................................31
16. Over-Voltage Protection .............................................................................................................................................................................32
16.1 I/O Protection.....................................................................................................................................................................................32
17. Programming Options.................................................................................................................................................................................32
17.1 Programming the Device to Use the Other Supply Voltage Option ...................................................................................................34
17.2 Lock Feature (Cyber Security)...........................................................................................................................................................34
© 2021 Renesas Electronics Corporation
2
September 8, 2021




 IPS2550
IPS2550 Datasheet
17.3 Programming Options........................................................................................................................................................................34
18. Functional Safety and Diagnostics .............................................................................................................................................................35
18.1 Functional Safety ASIL and ISO Compliance ....................................................................................................................................35
18.2 Diagnostic Mode Indication through Analog Outputs.........................................................................................................................35
18.2.1 Shorted and Broken Wire Detection ...................................................................................................................................36
18.3 Diagnostic Features...........................................................................................................................................................................40
18.4 Internal Register and Memory Errors.................................................................................................................................................41
18.5 LC Oscillator Frequency Out of Range..............................................................................................................................................41
19. Redundant Connections .............................................................................................................................................................................42
20. Application Examples .................................................................................................................................................................................43
21. Electromagnetic Compatibility (EMC) .........................................................................................................................................................44
22. 16-TSSOP Package Outline Drawings .......................................................................................................................................................44
23. Marking Diagram ........................................................................................................................................................................................45
23.1 Marking of Production Parts ..............................................................................................................................................................45
24. Ordering Information...................................................................................................................................................................................45
25. Revision History..........................................................................................................................................................................................45
List of Figures
Figure 1. Pin Assignments for 16-TSSOP Package Top View ........................................................................................................................5
Figure 2. LC Oscillator Connection in ASIL-C Configuration with Split TX Capacitors .......................................................................................7
Figure 3. LC Oscillator Connection in Compatibility Mode Configuration with Split TX Capacitors ....................................................................8
Figure 4. Maximum Supply Current vs Ambient Temperature, with and without Ground Plane .......................................................................11
Figure 5. Parallel Resonator Circuit.....................................................................................................................................................................13
Figure 6. Response of the IPS2550..................................................................................................................................................................20
Figure 7. Coil Design for a Linear Motion Sensor .............................................................................................................................................21
Figure 8. Coil Design for a 360° Rotary Sensor ...............................................................................................................................................22
Figure 9. Output Signals: Sine-Cosine Analog Differential Mode .....................................................................................................................23
Figure 10. Output Signals: Sine-Cosine Analog Single-Ended Mode.................................................................................................................23
Figure 11. Block Diagram ...................................................................................................................................................................................25
Figure 12. Embedded Application: Sensor and MCU are on the same PCB......................................................................................................28
Figure 13. Remote Application with Pull-Up Resistors for Diagnosis .................................................................................................................29
Figure 14. Remote Application with Pull-Down Resistors for Diagnosis.............................................................................................................29
Figure 15. I2C Interface with Address Select .....................................................................................................................................................30
Figure 16. I2C Interface with Address Selection by Hardware Pin Strapping Through ADR_IRQN Pin.............................................................31
Figure 17. I2C Interface Configuration with Interrupt on a Single Slave .............................................................................................................31
Figure 18. I2C Interface Configuration with Multi-slave Interrupt........................................................................................................................31
Figure 19. Programming the IPS2550 over the I2C Interface.............................................................................................................................32
Figure 20. End of Line Programming of the IPS2550 Through the Analog Outputs ...........................................................................................33
Figure 21. Operating Range and Diagnostic Range ...........................................................................................................................................35
Figure 22. Selection of Diagnostic Range ..........................................................................................................................................................36
© 2021 Renesas Electronics Corporation
3
September 8, 2021




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