IL41050 ETC2 | Alldatasheet

Document overview

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Technical content

Features

  • Single-chip isolated CAN/DeviceNet transceiver
  • Fully compliant with the ISO 11898 CAN standard
  • Best-in-class loop delay (180 ns)
  • 3.0 V to 5.5 V input power supplies
  • >110-node fan-out
  • High speed (up to 1 Mbps)
  • 2,500 VRMS isolation (1 minute)
  • Very low Electromagnetic Emission (EME)
  • Differential signaling for excellent Electromagnetic Immunity (EMI)
  • 30 kV/µs transient immunity
  • Silent mode to disable transmitter
  • Unpowered nodes do not disturb the bus
  • Transmit data (TxD) dominant time-out function
  • Edge triggered, non-volatile input improves noise performance
  • Bus pin transient protection for automotive environment
  • Thermal shutdown protection
  • Short-circuit protection for ground and bus power
  • −55°C to +125°C operating temperature
  • 0.15" and 0.3" and 16-pin JEDEC-standard SOIC packages
  • UL1577 and IEC 61010-2001 approved

Applications

  • Noise-critical CAN
  • Partially-powered CAN
  • DeviceNet
  • Factory automation

Description

The IL41050 is a galvanically isolated, high-speed CAN (Controller Area Network) transceiver, designed as the interface between the CAN protocol controller and the physical bus. The IL41050 provides isolated differential transmit capability to the bus and isolated differential receive capability to the CAN controller via NVE’s patented* IsoLoop spintronic Giant Magnetoresistance (GMR) technology. Advanced features facilitate reliable bus operation. Unpowered nodes do not disturb the bus, and a unique non-volatile programmable power-up feature prevents unstable nodes. The devices also have a hardware-selectable silent mode that disables the transmitter. Designed for harsh CAN and DeviceNet environments, IL41050T transceivers have transmit data dominant time-out, bus pin transient protection, thermal shutdown protection, and short-circuit protection, Unique edge-triggered inputs improve noise performance. Unlike optocouplers or other isolation technologies, IsoLoop isolators have indefinite life at high voltage.

NVE Corporation 11409 Valley View Road, Eden Prairie, MN 55344-3617 Phone: (952) 829-9217 Fax: (952) 829-9189 www.IsoLoop.com ©NVE Corporation Absolute Maximum Ratings (1) (2) Parameters Symbol Min. Typ. Max. Units Test Conditions Storage temperature TS −55 150 °C Ambient operating temperature TA −55 135 °C DC voltage at CANH and CANL pins V CANH VCANL −27 40 V 0 V< VDD2 < 5.25 V; indefinite duration Supply voltage V DD1 , VDD2 −0.5 6 V Digital input voltage VTxD , VS −0.3 V DD + 0.3 V Digital output voltage VRxD −0.3 V DD + 0.3 V DC voltage at VREF V REF −0.3 V DD + 0.3 V Transient Voltage at CANH or CANL V trt(CAN) −200 200 V Electrostatic discharge at all pins Vesd −4,000 4,000 V Human body model Electrostatic discharge at all pins Vesd −200 200 V Machine model Recommended Operating Conditions Parameters Symbol Min. Typ. Max. Units Test Conditions Supply voltage VDD1 VDD2 3.0 4.75 5.5 5.25 V Input voltage at any bus terminal (separately or common mode) VCANH VCANL −12 12 V High-level digital input voltage (3) (4) V IH 2.0 2.4 2.0 V DD1 VDD1 VDD2 V VDD1 = 3.3 V VDD1 = 5.0 V VDD2 = 5.0 V Low-level digital input voltage (3) (4) V IL 0 0.8 V Digital output current (RxD) IOH −8 8 mA V DD1 = 3.3V to 5V Ambient operating temperature TA −55 125 °C Digital input signal rise and fall times t IR, tIF 1 μs Insulation Specifications Parameters Symbol Min. Typ. Max. Units Test Conditions Creepage distance (external) 8.08 mm Barrier impedance > 1014 || 7 Ω || pF Leakage current 0.2 μARMS 240 V RMS, 60 Hz Safety and Approvals IEC61010-2001 TUV Certificate Numbers: N1502812 (pending) Classification: Reinforced Insulation Model Package Pollution Degree Material Group Max. Working Voltage IL41050 SOIC (0.15" and 0.3") II III 300 VRMS UL 1577 Component Recognition Program File Number: E207481 (pending) Rated 2,500VRMS for 1 minute Soldering Profile Per JEDEC J-STD-020C Moisture Sensitivity Level: MSL=2 Notes: 1. Absolute Maximum specifications mean the device will not be damaged if operated under these conditions. It does not guarantee performance. 2. All voltages are with respect to network ground except differential I/O bus voltages. 3. The TxD input is edge sensitive. Voltage magnitude of the input signal is specified, but edge rate specifications must also be met. 4. The maximum time allowed for a logic transition at the TxD input is 1 μs.

NVE Corporation 11409 Valley View Road, Eden Prairie, MN 55344-3617 Phone: (952) 829-9217 Fax: (952) 829-9189 www.IsoLoop.com ©NVE Corporation IL41050-3 Pin Connections (0.15" SOIC Package)

1 V DD1 VDD1 power supply input

2 GND 1 VDD1 power supply ground return

3 TxD Transmit Data input

4 RxD Receive Data output

5 NC No internal connection

6 NC No internal connection

7 NC No internal connection

8 NC No internal connection

9 IsoRxD

Isolated RxD output. No connection should be made to this pin.

10 CANL Low level CANbus line

11 V DD2 VDD2 power supply input

12 CANH High level CANbus line

13 S Mode select input. Leave open or set low for normal operation; set high for silent mode.

14 IsoTxD

Isolated TxD output. No connection should be made to this pin.

15 GND 2 VDD2 power supply ground return

16 V DD2 VDD2 power supply input

IL41050 Pin Connections (0.3" SOIC Package)

2 GND 1

VDD1 power supply ground return (pin 2 is internally connected to pin 8)

4 NC No internal connection

5 RxD Receive Data output

8 GND 1

VDD1 power supply ground return (pin 8 is internally connected to pin 2)

9 GND 2

VDD2 power supply ground return (pin 9 is internally connected to pin 15)

10 V REF Reference voltage output

12 CANL Low level CANbus line

13 CANH High level CANbus line

14 S Mode select input. Leave open or set low for normal operation; set high for silent mode.

15 GND 2

VDD2 power supply ground return (pin 15 is internally connected to pin 9) S CANH RxD CANL VREF GND1 VDD1 GND2 TxD NC VDD2

NVE Corporation 11409 Valley View Road, Eden Prairie, MN 55344-3617 Phone: (952) 829-9217 Fax: (952) 829-9189 www.IsoLoop.com ©NVE Corporation Specifications Parameters Symbol Min. Typ. Max. Units Test Conditions Power Supply Current Quiescent supply current (recessive) IQ VDD1 1 0.7 1.75 1.4 3.0 2.0 mA dr = 0 bps; VDD1 = 5 V dr = 0 bps; VDD1 = 3.3 V Dynamic supply current (dominant) I VDD1 1.2 0.9 2.0 1.6 3.2 2.2 mA dr = 1 Mbps, RL= 60Ω; VDD1 = 5 V dr = 1 Mbps, RL= 60Ω; VDD1 = 3.3 V Quiescent supply current (recessive) Dynamic supply current (dominant) IQ VDD2 IVDD2 3.5 6.75 78 mA 0 bps

1 Mbps, R

L = 60Ω Transmitter Data input (TxD)(1) High level input voltage ↑ V IH 2.4 5.25 V V DD1 = 5 V; recessive High level input voltage ↑ V IH 2.0 3.6 V V DD1 = 3.3 V; recessive Low level input voltage ↓ V IL −0.3 0.8 V Output dominant TxD input rise and fall time(2) tr 1 μs 10% to 90% High level input current IIH −10 10 μA V TxD = VDD1 Low level input current IIL 10 10 μA V TxD = 0 V Mode select input (S) High level input voltage VIH 2.0 V DD2 + 0.3 V Silent mode Low level input voltage VIL −0.3 0.8 V High-speed mode High level input current IIH 20 30 45 μA V S = 2 V Low level input current IIL 15 30 10 μA V S = 0 V Receiver Data output (RxD) High level output current IOH −2 −8.5 −20 mA V RxD = 0.8 VDD1 Low level output current IOL 2 8.5 20 mA V RxD = 0.45 V Failsafe supply voltage(4) VDD2 3.6 3.9 V Reference Voltage output (VREF) Reference Voltage output VREF 0.45 V DD2 0.5 V DD2 0.55 V DD2 V −50 μA<IVREF< +50 μA Bus lines (CANH and CANL) Recessive voltage at CANH pin V O(reces) CANH 2.0 2.5 3.0 V V TxD = VDD1, no load Recessive voltage at CANL pin V O(reces) CANL 2.0 2.5 3.0 V V TxD = VDD1, no load Recessive current at CANH pin I O(reces) CANH −2.0 +2.5 mA −27 V < VCANH< +32V; 0V < VDD2<5.25V Recessive current at CANL pin I O(reces) CANL −2.0 +2.5 mA −27 V < VCANL < +32V; 0 V <VDD2 < 5.25 V Dominant voltage at CANH pin V O(dom) CANH 3.0 3.6 4.25 V V TxD = 0 V Dominant voltage at CANL pin V O(dom) CANL 0.5 1.4 1.75 V V TxD = 0 V 1.5 2.25 3.0 V VTxD = 0 V; dominant 42.5 Ω < RL < 60 Ω Differential bus input voltage (VCANH − VCANL) Vi(dif)(bus) −50 0 +50 mV VTxD = VDD1; recessive; no load Short-circuit output current at CANH I O(sc) CANH −45 −70 −95 mA V CANH = 0 V, VTxD = 0 Short-circuit output current at CANL I O(sc) CANL 45 70 100 mA V CANL = 36 V, VTxD = 0 Differential receiver threshold voltage V i(dif)(th) 0.5 0.7 0.9 V −12 V <VCANL< +12V; −12 V <VCANH< +12 V Differential receiver input voltage hysteresis V i(dif)(hys) 50 70 100 mV −12 V <VCANL< +12 V; −12 V <VCANH< +12 V Common Mode input resistance at CANH Ri(CM)(CANH) 15 25 35 kΩ Common Mode input resistance at CANL R i(CM)(CANL) 15 25 35 kΩ Matching between Common Mode input resistance at CANH, CANL Ri(CM)(m) −3 0 +3 % V CANL = VCANH Differential input resistance Ri(diff) 25 50 75 kΩ Input capacitance, CANH Ci(CANH) 7.5 20 pF V TxD = VDD1 Input capacitance, CANL Ci(CANL) 7.5 20 pF V TxD = VDD1 tr

NVE Corporation 11409 Valley View Road, Eden Prairie, MN 55344-3617 Phone: (952) 829-9217 Fax: (952) 829-9189 www.IsoLoop.com ©NVE Corporation Specifications (...cont.) Differential input capacitance Ci(dif) 3.75 10 pF V TxD = VDD1 Input leakage current at CANH ILI(CANH) 100 170 250 μA V CANH= 5 V, VDD2= 0 V Input leakage current at CANL ILI(CANL) 100 170 250 μ A V CANL= 5 V, VDD2= 0 V Thermal Shutdown Shutdown junction temperature Tj(SD) 155 165 180 °C Timing Characteristics TxD to bus active delay td(TxD-BUSon) 29 125 128 ns V S= 0 V; VDD1 = 5 V VS = 0 V; VDD1 = 3.3 V TxD to bus inactive delay td(TxD-BUSoff) 29 110 113 ns V S = 0 V; VDD1 = 5 V VS = 0 V; VDD1 = 3.3 V Bus active to RxD delay td(BUSon-RxD) 24 125 128 ns V S = 0 V; VDD1 = 5 V VS = 0 V; VDD1 = 3.3 V Bus inactive to RxD delay td(BUSoff-RxD) 49 103 106 170 173 ns V S = 0 V; VDD1 = 5 V VS = 0 V; VDD1 = 3.3 V TxD dominant time for timeout Tdom(TxD) 250 457 765 μs VTxD = 0 V 3.0 V > VDD1 < 5.5 V Magnetic Field Immunity (3) VDD1 = 5 V, VDD2 = 5 V Power frequency magnetic immunity H PF 2,500 3,000 A/m 50 Hz/60 Hz Pulse magnetic field immunity HPM 3,000 3,500 A/m t p = 8 µs Cross-axis immunity multiplier KX 1.8 Figure 1 VDD1 = 3.3 V, VDD2 = 5 V Power frequency magnetic immunity H PF 1,000 1,500 A/m 50 Hz/60 Hz Pulse magnetic field immunity HPM 1,800 2,000 A/m t p = 8 µs Cross-axis immunity multiplier KX 1.5 Figure 1 Notes: 1. The TxD input is edge sensitive. Voltage magnitude of the input signal is specified, but edge rate specifications must also be met. 2. The maximum time allowed for a logic transition at the TxD input is 1 μs. 3. Uniform magnetic field applied across the pins of the device. Cross-axis multiplier effective when field is applied perpendicular to the pins. 4. If VDD2 falls below the specified failsafe supply voltage, RxD will go High. Electrostatic Discharge Sensitivity This product has been tested for electrostatic sensitivity to the limits stated in the specifications. However, NVE recommends that all integrated circuits be handled with appropriate care to avoid damage. Damage caused by inappropriate handling or storage could range from performance degradation to complete failure. Electromagnetic Compatibility The IL41050 is fully compliant with generic EMC standards EN50081, EN50082-1 and the umbrella line-voltage standard for Information Technology Equipment (ITE) EN61000. The IsoLoop Isolator’s Wheatstone bridge configuration and differential magnetic field signaling ensure excellent EMC performance against all relevant standards. NVE conducted compliance tests in the categories below: EN50081-1 Residential, Commercial & Light Industrial Methods EN55022, EN55014 EN50082-2: Industrial Environment Methods EN61000-4-2 (ESD), EN61000-4-3 (Electromagnetic Field Immunity), EN61000-4-4 (Electrical Transient Immunity), EN61000-4-6 (RFI Immunity), EN61000-4-8 (Power Frequency Magnetic Field Immunity), EN61000-4-9 (Pulsed Magnetic Field), EN61000-4-10 (Damped Oscillatory Magnetic Field) ENV50204 Radiated Field from Digital Telephones (Immunity Test) Immunity to external magnetic fields is higher if the field direction is “end-to-end” (rather than to “pin-to-pin”) as shown in the diagram at right. Fig. 1

NVE Corporation 11409 Valley View Road Eden Prairie, MN 55344-3617 USA Telephone: (952) 829-9217 Fax (952) 829-9189 Internet: www.isoloop.com

Application Information

Both VDD1 and VDD2 must be bypassed with 100 nF ceramic capacitors. These supply the dynamic current required for the isolator switching and should be placed as close as possible to VDD and their respective ground return pins. Dominant Mode Time-out and Failsafe Receiver Functions CAN bus latch up is prevented by an integrated Dominant mode timeout function. If the TxD pin is forced permanently low by hardware or software application failure, the time-out returns the RxD output to the high state no more than 765 μs after TxD is asserted dominant. The timer is triggered by a negative edge on TxD. If the duration of the low is longer than the internal timer value, the transmitter is disabled, driving the bus to the recessive state. The timer is reset by a positive edge on pin TxD. If power is lost on Vdd2, the IL41050 asserts the RxD output high when the supply voltage falls below 3.8 V. RxD will return to normal operation as soon as Vdd2 rises above approximately 4.2 V. The Isolation Advantage Battery fire caused by over or under charging of individual lithium ion cells is a major concern in multi-cell high voltage electric and hybrid vehicle batteries. To combat this, each cell is monitored for current flow, cell voltage, and in some advanced batteries, magnetic susceptibility. The IL41050 allows seamless connection of the monitoring electronics of every cell to a common CAN bus by electrically isolating inputs from outputs, effectively isolating each cell from all other cells. Cell status is then monitored via the CAN controller in the Battery Management System (BMS). Another major advantage of isolation is the tremendous increase in noise immunity it affords the CAN node, even if the power source is a battery. Inductive drives and inverters can produce transient swings in excess of 20 kV/μs. The traditional, non-isolated CAN node provides some protection due to differential signaling and symmetrical driver/receiver pairs, but the IL41050 typically provides more than tw ice the dV/dt protection of a traditional CAN node. TxD RxD CANL Tx0 Rx0 ADR 0...7, CS XTAL1 XTAL2 SJA1000 CANH IL41050 Fig. 2. Isolated CAN node using the IL41050 and an SJA1000 MCU. Programmable Power-Up A unique non-volatile programmable power-up feature prevents unstable nodes. A state that needs to be present at node power up can be programmed at the last power down. For example if a CAN node is required to “pulse” dominant at power up, TxD can be sent low by the controller immediately prior to power down. When power is resumed, the node will immediately go dominant allowing self-check code in the microcontroller to verify node operation. If desired, the node can also power up silently by presetting the TxD line high at power down. At the next power on, the IL41050 will remain silent, awaiting a dominant state from the bus. The microcontroller can check that the CAN node powered down correctly before applying power at the next “power on” request. If the node powered down as intended, RxD will be set high and stored in IL41050’s non-volatile memory. The level stored in the RxD bit can be read before isolated node power is enabled, avoiding possible CAN bus disruption due to an unstable node.

NVE Corporation 11409 Valley View Road Eden Prairie, MN 55344-3617 USA Telephone: (952) 829-9217 Fax (952) 829-9189 Internet: www.isoloop.com Package Drawings, Dimensions and Specifications 0.15" 16-pin SOIC Package 0.054 (1.4) 0.072 (1.8) 0.040 (1.0) 0.060 (1.5) 0.016 (0.4) 0.050 (1.3) 0.386 (9.8) 0.394 (10.0) Pin 1 identified by either an indent or a marked dot NOM 0.228 (5.8) 0.244 (6.2) 0.152 (3.86) 0.157 (3.99) Dimensions in inches (mm) 0.007 (0.2) 0.013 (0.3) 0.004 (0.1) 0.012 (0.3) 0.040 (1.02) 0.050 (1.27) 0.013 (0.3) 0.020 (0.5) Pin spacing is a BASIC dimension; tolerances do not accumulate NOTE: 0.3" 16-pin SOIC Package NOM Pin 1 identified by either an indent or a marked dot 0.287 (7.29) 0.300 (7.62) Dimensions in inches (mm) 0.08 (2.0) 0.10 (2.5) 0.092 (2.34) 0.105 (2.67) 0.397 (10.1) 0.413 (10.5) 0.013 (0.3) 0.020 (0.5) 0.394 (10.00) 0.419 (10.64) 0.040 (1.0) 0.060 (1.5) 0.004 (0.1) 0.012 (0.3) 0.007 (0.2) 0.013 (0.3) 0.016 (0.4) 0.050 (1.3) Pin spacing is a BASIC dimension; tolerances do not accumulate NOTE:

NVE Corporation 11409 Valley View Road Eden Prairie, MN 55344-3617 USA Telephone: (952) 829-9217 Fax (952) 829-9189 Internet: www.isoloop.com Ordering Information and Valid Part Numbers IL 4 1050 T -3 E TR13 Bulk Packaging Blank = Tube (50 pcs) TR7 = 7'' Tape and Reel (800 pcs; 0.15'' SOIC only) TR13 = 13'' Tape and Reel (3,000 pcs 0.15'' SOIC or 1,500 pcs 0.3'' SOIC) Package E = RoHS Compliant Package Type Blank = 0.3'' SOIC -3 = 0.15'' SOIC Temperature Range T = Extended (-55˚C to +125˚C) Channel Configuration 1050 = CAN Transceiver Base Part Number 4 = Isolated Transceiver Product Family IL = Isolators Valid Part Numbers IL41050TE IL41050TE TR13 IL41050T-3E IL41050T-3E TR7 IL41050T-3E TR13 RoHS COMPLIANT

NVE Corporation 11409 Valley View Road Eden Prairie, MN 55344-3617 USA Telephone: (952) 829-9217 Fax (952) 829-9189 Internet: www.isoloop.com

Revision History

  • Added 7-inch tape-and-reel bulk packaging option (TR7) for narrow-body parts (p. 8). ISB-DS-001-IL41050-E March 2010 Changes
  • Changed narrow-body pinouts for pins 9, 10, 12, 13, and 14 (p. 3). ISB-DS-001-IL41050-D March 2010 Changes
  • Added 0.15" narrow-body SOIC package.
  • Added failsafe supply voltage specification and related Note 4. ISB-DS-001-IL41050-C February 2010 Changes
  • Extended min. operating temperature to −55°C.
  • Misc. changes and clarifications for final release. ISB-DS-001-IL41050-B January 2010 Change
  • Clarified TxD edge trigger mode. Added information to Applications section.
  • Tightened timing specifications based on qualification data. ISB-DS-001-IL41050-A January 2010 Change
  • Initial release.

NVE Corporation 11409 Valley View Road Eden Prairie, MN 55344-3617 USA Telephone: (952) 829-9217 Fax (952) 829-9189 Internet: www.isoloop.com About NVE An ISO 9001 Certified Company NVE Corporation manufactures innovative products based on unique spintronic Giant Magnetoresistive (GMR) technology. Products include Magnetic Field Sensors, Magnetic Field Gradient Sensors (Gradiometers), Digital Magnetic Field Sensors, Digital Signal Isolators, and Isolated Bus Transceivers. NVE pioneered spintronics and in 1994 introduced the world’s first products using GMR material, a line of ultra-precise magnetic sensors for position, magnetic media, gear speed and current sensing. NVE Corporation

11409 Valley View Road

Eden Prairie, MN 55344-3617 USA Telephone: (952) 829-9217 Fax: (952) 829-9189 Internet: www.nve.com e-mail: isoinfo@nve.com The information provided by NVE Corporation is believed to be accurate. However, no responsibility is assumed by NVE Corporation for its use, nor for any infringement of patents, nor rights or licenses granted to third parties, which may result from its use. No license is granted by implication, or otherwise, under any patent or patent rights of NVE Corporation. NVE Corporation does not authorize, nor warrant, any NVE Corporation product for use in life support devices or systems or other critical applications, without the express written approval of the President of NVE Corporation. Specifications are subject to change without notice. ISB-DS-001-IL41050-F April 2010