ISO1044DEVM

User's Guide SLLU314 – March 2020 ISO1044 Isolated CAN Transceiver Evaluation Module This user’s guide describes the evaluation module (EVM) for the family of ISO1044 isolated CAN transceivers. This EVM allows designers to evaluate device performance for fast development and analysis of isolated systems. The EVM supports evaluation of all ISO1044 devices in a 8-pin SOIC (D) package. CAUTION This evaluation module is made available for isolator parameter performance evaluation only and is not intended for isolation voltage testing. To prevent damage to the EVM, any voltage applied as a supply or digital input/output must be maintained within the 0 V to 5.5 V recommended operating range. 1 2 3 4 5 6 7 Contents Introduction ................................................................................................................... Overview ...................................................................................................................... Pin Configuration of the ISO1044 CAN Transceiver .................................................................... ISO1044 Board Block Diagram and Image............................................................................... EVM Schematics and Layout .............................................................................................. Bill of Materials ............................................................................................................... EVM Setup and Operation .................................................................................................. 7.1 Protection Configurations .......................................................................................... 2 2 2 3 4 5 5 5 List of Figures 1 ISO1044 Pin Configuration ................................................................................................. 2 2 ISO1044 Configuration ...................................................................................................... 3 3 ISO1044 Photograph ........................................................................................................ 3 4 ISO1044 Schematic ......................................................................................................... 4 5 ISO1044 PCB Layout ....................................................................................................... 4 6 Basic EVM Operation ....................................................................................................... 5 7 Typical Input and Output Waveforms ..................................................................................... 6 List of Tables 1 Bill of Materials .............................................................................................................. 5 Trademarks All trademarks are the property of their respective owners. SLLU314 – March 2020 Submit Documentation Feedback ISO1044 Isolated CAN Transceiver Evaluation Module Copyright © 2020, Texas Instruments Incorporated 1 Introduction 1 www.ti.com Introduction This user’s guide describes EVM operation with respect to the ISO1044 isolated CAN transceiver. The EVM includes test points for all main points where probing is necessary for evaluation such as GND, VCC, TXD, RXD, CANH, CANL. The EVM supports many options for CAN bus configuration. It is pre-configured with a split termination network with a common-mode capacitance and additional caps on the bus for protection. It also includes an option to populate a 120-Ω resistor which can be used with the EVM as a terminated line end (CAN is defined for 120-Ω impedance twisted pair cable). Pads are provided to add protection components like TVS diodes and common mode (CM) chokes. By default, bypass paths are used around those devices.Using these options, the customer is allowed installation of the desired components. This guide describes the EVM schematic, layout and typical laboratory setup. A typical input and output waveform is also presented. 2 Overview The ISO1044 device is a galvanically-isolated controller area network (CAN) transceiver that meets the specifications of the ISO11898-2 (2016) standard. The ISO1044 device offers ±58-V DC bus fault protection and ±12-V common-mode voltage range. The device supports up to 5-Mbps data rate in CAN FD mode allowing much faster transfer of payload compared to classic CAN. This device uses a silicon dioxide (SiO2) insulation barrier with a withstand voltage of 3000 VRMS. Used in conjunction with isolated power supplies, the device prevents noise currents on a data bus or other circuits from entering the local ground and interfering with or damaging sensitive circuitry. 3 Pin Configuration of the ISO1044 CAN Transceiver Figure 1 shows the ISO1044 pin configuration. 1 16 VCC2 GND1 2 15 GND2 TXD 3 14 NC NC 4 13 CANH RXD 5 12 CANL NC 6 11 VCC2 NC 7 10 GND2 GND1 8 9 GND2 ISOLATION VCC1 Not to scale Figure 1. ISO1044 Pin Configuration 2 ISO1044 Isolated CAN Transceiver Evaluation Module Copyright © 2020, Texas Instruments Incorporated SLLU314 – March 2020 Submit Documentation Feedback ISO1044 Board Block Diagram and Image www.ti.com 4 ISO1044 Board Block Diagram and Image Figure 2 shows the board configuration for evaluation of the ISO1044 isolated CAN transceiver. VCC1 VCC2 TXD Protection Components CAN Bus CAN Bus RXD GND1 GND2 Figure 2. ISO1044 Configuration Figure 3 shows the photograph of the EVM. Figure 3. ISO1044 Photograph SLLU314 – March 2020 Submit Documentation Feedback ISO1044 Isolated CAN Transceiver Evaluation Module Copyright © 2020, Texas Instruments Incorporated 3 EVM Schematics and Layout 5 www.ti.com EVM Schematics and Layout Figure 4 shows the ISO1044 schematic and Figure 5 shows the printed-circuit board (PCB) layout. Figure 4. ISO1044 Schematic Figure 5. ISO1044 PCB Layout 4 ISO1044 Isolated CAN Transceiver Evaluation Module Copyright © 2020, Texas Instruments Incorporated SLLU314 – March 2020 Submit Documentation Feedback Bill of Materials www.ti.com 6 Bill of Materials Table 1 shows the bill of materials (BOM) for this EVM. Table 1. Bill of Materials Item Designator Description Manufacturer Part Number Quantity PEC06SAAN 2 1 J1, J2 Header, 100 mil, 6x1, Tin, TH Sullins Connector Solutions 2 C3 CAP, CERM, 10 uF, 35 V, +/- 10%, X5R, 0805 MuRata GRM21BR6YA106KE43L 3 4 C1, C2 CAP, CERM, 0.1 uF, 25 V, +/- 5%, X7R, 0603 AVX 06033C104JAT2A 3 5 C4 CAP, CERM, 4700 pF, 50 V, +/- 10%, X7R, 0603 MuRata GRM188R71H472KA01D 1 6 C5, C6 CAP, CERM, 68 pF, 100 V, +/- 5%, C0G/NP0, 0603 MuRata GRM1885C2A680JA01D 2 7 R1, R5 RES, 0, 5%, 0.25 W, 1206 Vishay-Dale CRCW12060000Z0EA 0 8 R2, R4 RES, 59.0, 1%, 0.25 W, 1206 Vishay-Dale CRCW120659R0FKEA 2 9 R3 RES, 120, 1%, 1 W, AEC-Q200 Grade 0, 2512 Vishay-Dale CRCW2512120RFKEG 0 10 L1 Coupled inductor, 51 µH, 0.2 A, 1 ohm, AEC-Q200 Grade 0, SMD TDK ACT45B-510-2P-TL003 1 11 D1 Diode, TVS, Bi, 7 V, SOT-23 Bourns CDSOT23-SM712 1 12 U1 ISO1044DW, DW0016B (SOIC-16) Texas Instruments ISO1044 1 13 TP1, TP2, TP3, TP4, TP5, TP6, TP7, TP8 Test Point, Miniature, SMT Keystone 5019 10 14 H1, H2, H3, H4 Bumpon, Hemisphere, 0.44 X 0.20, Clear 3M SJ-5303 (CLEAR) 4 7 EVM Setup and Operation This section describes the setup and operation of the EVM for parameter performance evaluation. Figure 6 shows the configuration for operating the ISO1044 using two power supplies. VCC1 GND1 VCC2 GND2 Signal Generator Scope TXD CAN Bus Scope RXD Figure 6. Basic EVM Operation 7.1 Protection Configurations The EVM also has footprints for various protection schemes to enhance robustness for extreme system level EMC requirements. Figure 7 summarizes these options SLLU314 – March 2020 Submit Documentation Feedback ISO1044 Isolated CAN Transceiver Evaluation Module Copyright © 2020, Texas Instruments Incorporated 5 EVM Setup and Operation www.ti.com Figure 7 shows typical input and output waveforms of the EVM for a 5-Mbps signal. TXD is shown as Channel 1, the CAN bus is shown as Channel 2, Channel 3 and RXD is shown as Channel 4. Figure 7. Typical Input and Output Waveforms Configuration Series resistors or common mode choke Footprint Reference R1/R5 or L1 C8/C9 Use Case Population and Description Direct CAN transceiver to bus connection R1 and R5 populated with 0Ω Series resistance protection, CAN transceiver to bus connection R1 and R14 populated with MELF resistor as necessary for harsh EMC environment CM choke (bus filter) L1 populated with CM choke to filter noise as necessary for harsh EMC environment (Default Population) Bus Filter Filter noise as necessary for harsh EMC environment. Use filter caps in combination with L1 CM choke Transient and ESD protection To add extra protection for system level transients and ESD protection. TVS diode population option via D1 footprint or varistor population through C2/C7 footprint. Bus filtering caps and transient protection C8/C9 or D1 6 ISO1044 Isolated CAN Transceiver Evaluation Module Copyright © 2020, Texas Instruments Incorporated SLLU314 – March 2020 Submit Documentation Feedback IMPORTANT NOTICE AND DISCLAIMER TI PROVIDES TECHNICAL AND RELIABILITY DATA (INCLUDING DATA SHEETS), DESIGN RESOURCES (INCLUDING REFERENCE DESIGNS), APPLICATION OR OTHER DESIGN ADVICE, WEB TOOLS, SAFETY INFORMATION, AND OTHER RESOURCES “AS IS” AND WITH ALL FAULTS, AND DISCLAIMS ALL WARRANTIES, EXPRESS AND IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY RIGHTS. These resources are intended for skilled developers designing with TI products. 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