STEVAL-OET003V1 STMicroelectronics

STEVAL-OET003V1 Evaluation board for automotive-grade ESD protection Data brief Description This demonstration tool is designed to provide an easy way to evaluate the robustness of ESD diodes developed for the automotive environment. It is based on a master-slave structure on the same board using two STM8AF528. The microcontrollers communicate with each other via a communication loop based on LIN/CAN protocol. Communication flow status is indicated by four onboard LEDs. The LIN and CAN bus interfaces use four transceivers and are supplied by the step-up converter. Features Input voltage 5 V 12 V output, step-up converter for transceiver supply voltage LIN transceiver CAN transceiver Automotive-grade ESD protection IEC61000-4-2 compatibility August 2016 DocID029650 Rev 1 1/10 www.st.com For further information contact your local STMicroelectronics sales office Schematics STEVAL-OET003V1 Schematics Figure 1: Schematics power section STEP UP CONVERTER 5V to 12V R11 1K +5V +12V 1 2 D5 U2 STPS3L40-Y 8 1 1 2 1 2 Vcc Vout L2 7 2 22uH C2 GND SY 2n2, 25V 6 3 Fsw EN 5 4 R20 ESDA14V2SC5Y FB COMP R19 220R Q1 47k, 1% U16 C5 C6 R18 A7985A STN4NF06L 1 10uF 100nF 110k C8 2n2, 25V 2 1 C9 D6 470pF STPS3L40-Y R21 1 22 1 R22 1.5k 100nF 2.49k, 1% C10 POWER INPUT AND PROTECTION POWER CAN MCU LIN +5V R39 U7 DC-10B PTC 0.12 1/8W U6 LF33CDT-TRY N.M. 1 1 2 1 2 1 2 1 3 B CB VIN VOUT 3V3 J6 2 5Vto3V3 C15 3 C16 D11 PSG 10uF 100nF J5 SM4T6V7AY 4 C17 C18 C20 CG1 C19 2.2u N.M. 5 N.M N.M. 100nF N.M. CG2 6 CG3 Murata BNX002-01 5Vin 0 Figure 2: Schematics LIN section +12V LIN VBAT J7 JUMPER C21 100nF D12 J8 BAT48ZFILM R40 R41 1 2 ESD PROTECTION LIN 1 2 1 2 4K7 0 J9 C22 LIN OUTPUT U8 JUMPER1 D13 100nF 12V VCC 1 BAT48ZFILM GND 2 NORMAL LIN 3 OPEN R43 MASTER 1K R44 U9 1 0R 2 1 8 UART1 RX RXD INH ESD Tip6 TP13 TP14 D14 D15 2 7 FOR VOLTAGE LIN EN MCU1 SLP NVs PROBE ESDLIN1524 3 6 TP15 WUP LIN C23 4 5 SOD323 SOD523 UART1 TX TXD GND 1nF R45 R46 10k N.M.10k TJA1021T/10 TP16 HIGH CURRENT 50A for 1nSec TP17 VBAT J10 1 2 +12V JUMPER D16 J11 BAT48ZFILM 1 2 C24 ESD PROTECTION LIN C25 100nF JUMPER1 100nF 12V VCC 3 R47 R48 UART3 RX GND 2 1 4K7 2 1 0 2 LIN 1 LIN OUTPUT R49 U10 1 2 NORMAL SLAVE J12 N.M OPEN U11 C26 1 8 ESD Tip7 100nF RXD INH TP18 D17 D18 FOR VOLTAGE 2 7 TP19 LIN EN MCU2 PROBE SLP NVs ESDLIN1524 TP20 3 6 WUP LIN R50 1 2 4 5 C27 SOD323 SOD523 UART3 TX TXD GND 10k R510R 220pF R52 TJA1021T/10 TP21 N.M.10k HIGH CURRENT 50A for 1nSec 2/10 DocID029650 Rev 1 2 1 1 2 1 2 1 2 1 2 1 2 2 1 1 2 9 TP 1 2 1 2 1 2 1 2 2 1 1 2 2 1 3 2 4 2 1 2 1 2 1 2 1 1 2 2 1 1 2 1 22 1 2 1 2 1 2 1 1 2 1 2 2 GND 2 1 6 1 1 2 5 2 4 3 1 1 1 1 1 1 1 2 1 2 1 2 1 2