Product Brief TLE 6710Q Combined Power Supply and Firing IC T h e T L E 6 7 1 0 Q is a combined power supply and firing IC specially Embedded Protection Functions ■ Thermal and short circuit protection in one single package. ■ Current limitation for each firing loop Applications Embedded Diagnostic Functions designed for automotive restraint applications. The device, located in the ECU for each switch (Electronic Control Unit) of the airbag system, incorporates several system functions ■ Automotive Restraint Applications ■ Squib resistance Measurement with programmable gain Features ■ Programable Squib Leakage Measurement to GND or BAT ■ Boost Converter up to 30 V ■ Buck Converter 5 V ■ Detection of safing sensor closure ■ 4 independent firing loops (1.75 A ... 3 A) ■ Low battery detection ■ Extra HW lines (Safety Lines) to enable firing ■ Average Chip Temperature ■ High Side and Low Side Switch for each firing circuit ■ Digital output for firing current detection ■ Watchdog for supervision ■ Power on/off reset generator ■ Serial interface line driver (ISO 9141 and TTL-Level) ■ 4 voltage/current sources for diagnostic purposes ■ Diagnostic driver for inductive loads or lamps ■ Unidirectional Serial Peripheral Interface (SPI) up to 4 MHz ■ Logic and analogue output for direct sensing and diagnostic via µC www.infineon.com/restraint-system-IC Automotive Power Measurement ■ Supply voltage measurement on external pins Product Brief TVZ Boost VBATtoeVZ µC MOSI CL SSQ eVZ2 WDR RLM ISS LL MSS Lh VZ2 Measurement Resistance,Leakage andVoltages TLE 6710 PowerDown(VCC5 ) & Watchdog GNDB ZP12 M1 Supply & Reference SPI SerialPeripheral Interface & DecoderLogic ZP11 Squib Driver1 AnalogMUX OutputBuffers Buck eVZtoVCC5 hSeN12 MODe AUSP VZ1 Logic Logic hSeN34 IMeSS UZP UBRL VCC5 KOM1 KOM2 SVCC5 eVZ GNDC VBAT SVZ Block Diagram ZP21 Squib Driver2 ZP22 M2 fOSC VZ3 ZP31 Squib Driver3 Oscillator 100khz ZP32 M3 TxD K L RxD Voltage/Current Source Alarm Warning Lamp1 ISO9141 Interface Alarm Warning Lamp2 VZ4 ZP41 Squib Driver4 ZP42 COS ROS AWL2D AWL2S RTP AW1CT AWLeN GNDA1 AWL1 ISeNS IASG4 IASG3 IASG2 IASG1 ZKeN ReSQ LVCC M4 Product Summary Type Sales Code Description Package TLE 6710Q available upon request Airbag System IC P-MQFP-64-11 System Overview PedestrianProtection Bonnet PassengerSensing highSpeedCAN Airbag ECU eR VBAT OS VSAT VLogic TLe6365 Buck Buck Published by Infineon Technologies AG 81726 Munich, Germany © Infineon Technologies AG 2006. All Rights Reserved. SPI Boost ISO9141 Doors 4Loop Buckle Switch I/O Buckle Switch AWL Legal Disclaimer The information given in this Product Brief shall in no event be regarded as a guarantee of conditions or characteristics (“Beschaffenheitsgarantie”). With respect to any examples or hints given herein, any typical values stated herein and/or any information regarding the application of the device, Infineon Technologies hereby disclaims any and all warranties and liabilities of any kind, including without limitation warranties of non-infringement of intellectual property rights of any third party. Information For further information on technology, delivery terms and conditions and prices please contact your nearest Infineon Technologies Office (www.infineon.com). Published by Infineon Technologies AG Curtains FrontAirbag TLe6710 VBoost How to reach us: http://www.infineon.com TLe6714 4L-SPI TLe6712 2L-SPI C164 MCU e2P SideAirbag Passenger DualStage TLe7719 SatRICTM SmartPower Switch Occupant DualStage Pressure Sensors SideImpact Battery TLe6259 LIN SensorSPI TLe7719 SatRICTM TLe6250 CAN FiringSPI Acceleration Sensors Front& RearImpact WarningLamp AirbagOff Warnings Due to technical requirements components may contain dangerous substances. For information on the types in question please contact your nearest Infineon Technologies Office. Infineon Technologies Components may only be used in lifesupport devices or systems with the express written approval of Infineon Technologies, if a failure of such components can reasonably be expected to cause the failure of that life-support device or system, or to affect the safety or effectiveness of that device or system. Life support devices or systems are intended to be implanted in the human body, or to support and/or maintain and sustain and/or protect human life. If they fail, it is reasonable to assume that the health of the user or other persons may be endangered. Ordering No. B152-H8515-X-X-7600 Printed in Germany PS 1106.5 nb