DATASHEET SEARCH SITE | WWW.ALLDATASHEET.COM

Document overview

  • Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
  • PDF pages: 2

Technical content

System-Supply for Safety-Relevant Applications The TLF35584 is a multiple output system-supply for safety-relevant applications supplying 5 V or 3.3 V µC, transceivers, and sensors by an efficient and flexible pre-/ post-regulator concept over a wide input voltage range. The wide switching frequency range allows optimization in respect of efficiency and usage of small filter components. A dedicated reference-regulator supplies the ADC independent from µC-load steps and acts as tracking-source for the 2 independent sensor-supplies. The flexible state machine, wake-up concept including timer, and the stand-by-regulator favors the usage in numerous applications. Multiple safety features enable easy realization of ASIL-D together with various µCs. The TLF35584 is coming in small VQFN-48 (QV-version) capable for automated optical inspec- tion and additionally in LQFP-64 (QK-version), both packages thermally enhanced. Key Features Key Benefits

Applications

„ Pre-/post-regulator concept: boost & buck / LDOs & trackers for – µC (main, ADC/reference, StBy) – Transceivers – Sensors „ Integration of functional safety (features supporting ASIL-D) – UV/OV-monitoring – Flexible watchdogs – Error-monitoring – Safe state controller with 2 outputs – BIST „ Efficiency and flexibility „ Enables ASIL-D on system level „ Wide temperature range „ Safety: EPS, braking, suspension, chassis-controller, ADAS-fusion-box „ Powertrain: EMS, transmission „ EDT: inverter, BMS, DC/DC, charger Product Brief www.infineon.com Functional Block Diagram Enable & Wake/INH, Timer Pre-Regulator Synchronous Buck Optional Asynchronous Boost Power Management Post-Regulator /uni00B5C-Supply Communication-Supply Sensor-Supply Voltage-ReferenceControl & Monitoring of external Core-Supply State Machine Standby-Supply Internal Supply, Bandgap, Clock Window-Watchdog Functional-Watchdog Voltage Monitoring Interrupt-/Reset-Generator Functional Safety SPI /uni00B5C-Interface Error Monitoring Safe State Controller Built In Self Test Electrical Isolation, Bandgap

The device is developed acc. ISO 26262. The applied processes, safety assessment, and provided documentation (Safety Manual, Safety Analysis Summary Report) are reducing efforts and time for the safety assessment on ECU-level. Required safety integrity functions for ASIL-D are already imple- mented: UV/OV-monitoring of all rails with independent reference, detecting dependent failures by flexible watchdog-concept, moni- toring of µC’s safety management unit, and a safe state controller providing secondary safety paths. A built-in-self-test is ensuring the proper function of the relevant safety features. All features are perfectly aligned to the Infineon’s AURIX™-requirements, but are extended to support other µCs as well. All safety-relevant configurations are protected and can only be changed by special, successfully performed unlock/lock-se- quence. Product Brief Product Summary Type Description Ordering Code TLF35584QV VS1/VS2 PG-VQFN-48; 5 V/3.3 V for µC-supply SP001096170/SP001096172 TLF35584QK VS1/VS2 PG-LQFP-64; 5 V/3.3 V for µC-supply SP001273504/SP001273506 Published by Infineon Technologies AG

85579 Neubiberg, Germany

© 2015 Infineon Technologies AG. All Rights Reserved. Visit us: www.infineon.com Order Number: B124-I0110-V1-7600-EU-EC Date: 03 / 2015 Please note! THIS DOCUMENT IS FOR INFORMATION PURPOSES ONLY AND ANY INFORMATION GIVEN HEREIN SHALL IN NO EVENT BE REGARDED AS A WARRANTY, GUARANTEE OR DESCRIPTION OF ANY FUNCTIONALITY, CONDITIONS AND/OR QUALITY OF OUR PRODUCTS OR ANY SUITABILITY FOR A PARTICULAR PURPOSE. WITH REGARD TO THE TECHNICAL SPECIFICA - TIONS OF OUR PRODUCTS, WE KINDLY ASK YOU TO REFER TO THE RELEVANT PRODUCT DATA SHEETS PROVIDED BY US. OUR CUSTOMERS AND THEIR TECHNICAL DEPARTMENTS ARE REQUIRED TO EVALUATE THE SUITABILITY OF OUR PRODUCTS FOR THE INTENDED APPLICATION. WE RESERVE THE RIGHT TO CHANGE THIS DOCUMENT AND/ OR THE INFORMATION GIVEN HEREIN AT ANY TIME. Additional information For further information on technologies, our products, the application of our products, delivery terms and conditions and/or prices please contact your nearest Infineon Technologies office (www.infineon.com). Warnings Due to technical requirements, our products may contain dangerous substances. For information on the types in ques- tion please contact your nearest Infineon Technologies office. Except as otherwise explicitly approved by us in a written document signed by authorized representatives of Infineon Technologies, our products may not be used in any life endangering applications, including but not limited to medical, nuclear, military, life critical or any other applica - tions where a failure of the product or any consequences of the use thereof can result in personal injury. TLF35584 System-Supply for Safety-Relevant Applications Application Diagram Vbatt 1) LDO: Low-Dropout Linear Regulator 2) SMPR: Switch-Mode Post-Regulator Safety Path System Supply TLF35584 Tracker 1 Tracker 2 Tracker Sensors Window- & Q/A-Watchdog Boost/Buck Pre-Reg StdBy LDO /uni00B5C LDO /uni00B5C Ref LDO Sensors FlexRay CAN SMPR2) LDO1) Com LDO UV-/OV-/Error-Monitoring Safe State Controller