IL41050 Isolated High-Speed CAN Transceiver Functional Diagram Features S CANH TxD RxD CANL IL41050 VDD2 (V) TxD(1) S CANH (2) CANL Bus State RxD 4.75 to 5.25 ↓ Low High Low Dominant Low 4.75 to 5.25 X High VDD2/2 VDD2/2 Recessive High 4.75 to 5.25 ↑ VDD2/2 Recessive High X VDD2/2 <2V (no pwr) X X 0<V<2.5 0<V<2.5 Recessive High 2>VDD2<4.75 >2V X 0<V<2.5 0<V<2.5 Recessive High Table 1. Function table. Notes: 1. TxD input is edge triggered: ↑ = Logic Lo to Hi, ↓ = Hi to Lo 2. Valid for logic state as described or open circuit X = don’t care • • • • • • • • • • • • • • • • • • • • 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. IsoLoop® is a registered trademark of NVE Corporation. *U.S. Patent number 5,831,426; 6,300,617 and others. NVE Corporation 11409 Valley View Road, Eden Prairie, MN 55344-3617 REV. F Phone: (952) 829-9217 Fax: (952) 829-9189 www.IsoLoop.com ©NVE Corporation IL41050 Absolute Maximum Ratings(1) (2) Parameters Storage temperature Ambient operating temperature Symbol TS TA Min. −55 −55 DC voltage at CANH and CANL pins VCANH VCANL Supply voltage Digital input voltage Digital output voltage DC voltage at VREF Transient Voltage at CANH or CANL Electrostatic discharge at all pins Electrostatic discharge at all pins VDD1 , VDD2 VTxD , VS VRxD VREF Vtrt(CAN) Vesd Vesd Typ. Max. 150 135 Units °C °C −27 40 V −0.5 −0.3 −0.3 −0.3 −200 −4,000 −200 6 VDD + 0.3 VDD + 0.3 VDD + 0.3 200 4,000 200 V V V V V V V Max. 5.5 5.25 Units −12 12 V 2.0 2.4 2.0 0 −8 −55 VDD1 VDD1 VDD2 0.8 8 125 1 Test Conditions 0 V< VDD2 < 5.25 V; indefinite duration Human body model Machine model Recommended Operating Conditions Parameters Symbol VDD1 VDD2 VCANH VCANL Supply voltage Input voltage at any bus terminal (separately or common mode) High-level digital input voltage (3) (4) Low-level digital input voltage (3) (4) Digital output current (RxD) Ambient operating temperature Digital input signal rise and fall times Min. 3.0 4.75 VIH VIL IOH TA tIR, tIF Typ. Test Conditions V VDD1 = 3.3 V VDD1 = 5.0 V VDD2 = 5.0 V V V mA °C μs VDD1 = 3.3V to 5V Insulation Specifications Parameters Creepage distance (external) Barrier impedance Leakage current Symbol Min. 8.08 Typ. Max. > 1014 || 7 0.2 Units mm Ω || pF μARMS Test Conditions 240 VRMS, 60 Hz Safety and Approvals IEC61010-2001 TUV Certificate Numbers: N1502812 (pending) Classification: Reinforced Insulation Model IL41050 Package SOIC (0.15" and 0.3") Pollution Degree II Material Group III Max. Working Voltage 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. 2 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 IL41050-3 Pin Connections (0.15" SOIC Package) 1 VDD1 VDD1 power supply input 2 GND1 VDD1 power supply ground return 3 TxD Transmit Data input 4 RxD Receive Data output 5 NC No internal connection VDD1 VDD2 6 NC No internal connection GND1 GND2 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 VDD2 12 CANH TxD IsoTxD RxD S NC CANH VDD2 power supply input NC VDD2 High level CANbus line NC CANL Mode select input. Leave open or set low for normal operation; set high for silent mode. NC IsoRxD 13 S 14 IsoTxD Isolated TxD output. No connection should be made to this pin. 15 GND2 VDD2 power supply ground return 16 VDD2 VDD2 power supply input IL41050 Pin Connections (0.3" SOIC Package) 1 VDD1 VDD1 power supply input 2 GND1 VDD1 power supply ground return (pin 2 is internally connected to pin 8) 3 TxD Transmit Data input 4 NC No internal connection 5 RxD Receive Data output 6 NC No internal connection 7 NC No internal connection 8 GND1 VDD1 power supply ground return (pin 8 is internally connected to pin 2) 9 GND2 VDD2 power supply ground return (pin 9 is internally connected to pin 15) 10 VREF Reference voltage output 11 VDD2 VDD2 power supply input 12 CANL Low level CANbus line 13 CANH High level CANbus line 14 S 15 GND2 VDD2 power supply ground return (pin 15 is internally connected to pin 9) 16 VDD2 VDD2 power supply input VDD1 VDD2 GND1 GND2 S TxD NC CANH RxD CANL NC VDD2 NC VREF GND1 GND2 Mode select input. Leave open or set low for normal operation; set high for silent mode. 3 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 Specifications Electrical Specifications are Tmin to Tmax and VDD1, VDD2= 4.75 V to 5.25 V unless otherwise stated. Parameters Symbol Min. Typ. Max. Power Supply Current 1 1.75 3.0 Quiescent supply current (recessive) IQVDD1 0.7 1.4 2.0 Dynamic supply current (dominant) Units mA Test Conditions dr = 0 bps; VDD1 = 5 V dr = 0 bps; VDD1 = 3.3 V dr = 1 Mbps, RL= 60Ω; VDD1 = 5 V dr = 1 Mbps, RL= 60Ω; VDD1 = 3.3 V 0 bps 1 Mbps, RL = 60Ω 1.2 2.0 3.2 0.9 1.6 2.2 IQVDD2 IVDD2 3.5 26 6.75 52 13 78 mA VIH VIH VIL tr IIH IIL 2.4 2.0 −0.3 −10 10 5.25 3.6 0.8 1 10 10 V V V μs μA μA VDD1 = 5 V; recessive VDD1 = 3.3 V; recessive Output dominant 10% to 90% tr VTxD = VDD1 VTxD = 0 V VIH VIL IIH IIL 2.0 −0.3 20 15 VDD2 + 0.3 0.8 45 10 V V μA μA Silent mode High-speed mode VS = 2 V VS = 0 V IOH IOL VDD2 −2 2 3.6 −8.5 8.5 −20 20 3.9 mA mA V VRxD = 0.8 VDD1 VRxD = 0.45 V IVDD1 mA Quiescent supply current (recessive) Dynamic supply current (dominant) Transmitter Data input (TxD)(1) High level input voltage ↑ High level input voltage ↑ Low level input voltage ↓ TxD input rise and fall time(2) High level input current Low level input current Mode select input (S) High level input voltage Low level input voltage High level input current Low level input current Receiver Data output (RxD) High level output current Low level output current Failsafe supply voltage(4) Reference Voltage output (VREF) Reference Voltage output Bus lines (CANH and CANL) Recessive voltage at CANH pin Recessive voltage at CANL pin VREF 0.45 VDD2 0.5 VDD2 0.55 VDD2 V −50 μA<IVREF< +50 μA VO(reces) CANH VO(reces) CANL 2.0 2.0 2.5 2.5 3.0 3.0 V V Recessive current at CANH pin IO(reces) CANH −2.0 +2.5 mA Recessive current at CANL pin IO(reces) CANL −2.0 +2.5 mA Dominant voltage at CANH pin Dominant voltage at CANL pin VO(dom) CANH VO(dom) CANL 3.0 0.5 3.6 1.4 4.25 1.75 V V Differential bus input voltage (VCANH − VCANL) 1.5 2.25 3.0 V Vi(dif)(bus) −50 0 +50 mV VTxD = VDD1, no load VTxD = VDD1, no load −27 V < VCANH< +32V; 0V < VDD2<5.25V −27 V < VCANL < +32V; 0 V <VDD2 < 5.25 V VTxD = 0 V VTxD = 0 V VTxD = 0 V; dominant 42.5 Ω < RL < 60 Ω VTxD = VDD1; recessive; no load VCANH = 0 V, VTxD = 0 VCANL = 36 V, VTxD = 0 −12 V <VCANL< +12V; −12 V <VCANH< +12 V −12 V <VCANL< +12 V; −12 V <VCANH< +12 V 30 30 Short-circuit output current at CANH Short-circuit output current at CANL IO(sc) CANH IO(sc) CANL −45 45 −70 70 −95 100 mA mA Differential receiver threshold voltage Vi(dif)(th) 0.5 0.7 0.9 V Vi(dif)(hys) 50 70 100 mV Ri(CM)(CANH) 15 25 35 kΩ Ri(CM)(CANL) 15 25 35 kΩ Ri(CM)(m) −3 0 +3 % VCANL = VCANH Ri(diff) Ci(CANH) Ci(CANL) 25 50 7.5 7.5 75 20 20 kΩ pF pF VTxD = VDD1 VTxD = VDD1 Differential receiver input voltage hysteresis Common Mode input resistance at CANH Common Mode input resistance at CANL Matching between Common Mode input resistance at CANH, CANL Differential input resistance Input capacitance, CANH Input capacitance, CANL 4 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 Specifications (...cont.) Electrical Specifications are Tmin to Tmax and VDD1, VDD2= 4.5 V to 5.5 V unless otherwise stated. Differential input capacitance Ci(dif) 3.75 10 Input leakage current at CANH ILI(CANH) 100 170 250 Input leakage current at CANL ILI(CANL) 100 170 250 Thermal Shutdown Shutdown junction temperature Tj(SD) 155 165 180 Timing Characteristics 29 63 125 TxD to bus active delay td(TxD-BUSon) 32 66 128 29 68 110 TxD to bus inactive delay td(TxD-BUSoff) 32 71 113 24 58 125 Bus active to RxD delay td(BUSon-RxD) 27 61 128 49 103 170 Bus inactive to RxD delay td(BUSoff-RxD) 52 106 173 TxD dominant time for timeout Tdom(TxD) 250 457 765 pF μA μA VTxD = VDD1 VCANH= 5 V, VDD2= 0 V VCANL= 5 V, VDD2= 0 V °C ns ns ns ns μs VS= 0 V; VDD1 = 5 V VS = 0 V; VDD1 = 3.3 V VS = 0 V; VDD1 = 5 V VS = 0 V; VDD1 = 3.3 V VS = 0 V; VDD1 = 5 V VS = 0 V; VDD1 = 3.3 V VS = 0 V; VDD1 = 5 V VS = 0 V; VDD1 = 3.3 V VTxD = 0 V 3.0 V > VDD1 < 5.5 V Magnetic Field Immunity(3) Power frequency magnetic immunity Pulse magnetic field immunity Cross-axis immunity multiplier HPF HPM KX Power frequency magnetic immunity Pulse magnetic field immunity Cross-axis immunity multiplier HPF HPM KX VDD1 = 5 V, VDD2 = 5 V 2,500 3,000 3,000 3,500 1.8 VDD1 = 3.3 V, VDD2 = 5 V 1,000 1,500 1,800 2,000 1.5 A/m A/m 50 Hz/60 Hz tp = 8 µs Figure 1 A/m A/m 50 Hz/60 Hz tp = 8 µs 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 5 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 Application Information Power Supply Decoupling 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 twice the dV/dt protection of a traditional CAN node. ADR 0...7, CS Tx0 TxD CANH XTAL1 Rx0 RxD CANL XTAL2 IL41050 SJA1000 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. 6 NVE Corporation 11409 Valley View Road Eden Prairie, MN 55344-3617 USA Telephone: (952) 829-9217 Fax (952) 829-9189 Internet: www.isoloop.com IL41050 Package Drawings, Dimensions and Specifications 0.15" 16-pin SOIC Package Dimensions in inches (mm) 0.152 (3.86) 0.157 (3.99) 0.013 (0.3) 0.020 (0.5) NOM 0.016 (0.4) 0.050 (1.3) 0.007 (0.2) 0.013 (0.3) 0.386 (9.8) 0.394 (10.0) Pin 1 identified by either an indent or a marked dot 0.228 (5.8) 0.244 (6.2) 0.054 (1.4) 0.072 (1.8) 0.040 (1.02) 0.050 (1.27) 0.040 (1.0) NOTE: Pin spacing is a BASIC 0.060 (1.5) dimension; tolerances do not accumulate 0.004 (0.1) 0.012 (0.3) 0.3" 16-pin SOIC Package Dimensions in inches (mm) 0.287 (7.29) 0.300 (7.62) 0.013 (0.3) 0.020 (0.5) NOM 0.007 (0.2) 0.013 (0.3) 0.397 (10.1) 0.413 (10.5) Pin 1 identified by either an indent or a marked dot 0.394 (10.00) 0.419 (10.64) 0.016 (0.4) 0.050 (1.3) 0.092 (2.34) 0.105 (2.67) 0.08 (2.0) 0.10 (2.5) 0.040 (1.0) NOTE: Pin spacing is a BASIC 0.060 (1.5) dimension; tolerances do not accumulate 0.004 (0.1) 0.012 (0.3) 7 NVE Corporation 11409 Valley View Road Eden Prairie, MN 55344-3617 USA Telephone: (952) 829-9217 Fax (952) 829-9189 Internet: www.isoloop.com IL41050 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) Valid Part Numbers IL41050TE IL41050TE TR13 IL41050T-3E IL41050T-3E TR7 IL41050T-3E TR13 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 RoHS COMPLIANT 8 NVE Corporation 11409 Valley View Road Eden Prairie, MN 55344-3617 USA Telephone: (952) 829-9217 Fax (952) 829-9189 Internet: www.isoloop.com IL41050 Revision History ISB-DS-001-IL41050-F April 2010 Changes ISB-DS-001-IL41050-E March 2010 Changes ISB-DS-001-IL41050-D March 2010 Changes ISB-DS-001-IL41050-C February 2010 ISB-DS-001-IL41050-B January 2010 ISB-DS-001-IL41050-A January 2010 • • Added 7-inch tape-and-reel bulk packaging option (TR7) for narrow-body parts (p. 8). Changed narrow-body pinouts for pins 9, 10, 12, 13, and 14 (p. 3). • Added 0.15" narrow-body SOIC package. • Added failsafe supply voltage specification and related Note 4. Changes • Extended min. operating temperature to −55°C. • Misc. changes and clarifications for final release. Change • Clarified TxD edge trigger mode. Added information to Applications section. • Tightened timing specifications based on qualification data. Change • Initial release. 9 NVE Corporation 11409 Valley View Road Eden Prairie, MN 55344-3617 USA Telephone: (952) 829-9217 Fax (952) 829-9189 Internet: www.isoloop.com IL41050 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: [email protected] 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 10 NVE Corporation 11409 Valley View Road Eden Prairie, MN 55344-3617 USA Telephone: (952) 829-9217 Fax (952) 829-9189 Internet: www.isoloop.com