TPS929120-Q1
12-kanaliger 40-V-High-Side-LED-Treiber für Fahrzeuganwendungen mit FlexWire-Schnittstelle
TPS929120-Q1
- AEC-Q100-qualified for automotive applications:
- Temperature grade 1: –40°C to +125°C, TA
- Functional Safety-Capable
- 12-Channel precision high-side current output:
- Supply voltage 4.5 V to 40 V
- Up to 75 mA channel current set by resistor
- 2-Bit global, 6-bit independent current setting
- High current accuracy < ±5% at 5 mA to 75 mA
- High current accuracy < ±10% at 1 mA
- Low voltage drop 500 mV at 50 mA
- 12-Bit independent PWM dimming
- Programmable PWM frequency up to 20 kHz
- Linear and exponential dimming method
- FlexWire control interface
- Up to 1-MHz clock frequency
- Maximum 16 devices on one FlexWire bus
- Up to 8 bytes data transaction in one frame
- 5-V LDO output to supply CAN transceiver
- Diagnostic and protection:
- Programmable fail-safe state
- LED open-circuit detection
- LED short-circuit detection
- Single-LED short-circuit diagnostic
- Programmable low-supply detection
- Open-drain ERR for fault indication
- Watchdog and CRC for FlexWire interface
- 8-Bit ADC for pin voltage measurement
- Overtemperature protection
With increasing demand for animation in automotive lighting, LEDs must be controlled independently. Therefore, LED drivers with digital interfaces are essential to effectively drive pixel-controlled lighting applications. In exterior lighting, multiple lamp functions are typically located on different PCB boards with off-board wires connected to each other. It is difficult for a traditional single-ended interface to meet the strict EMC requirements. By using an industrial-standard CAN physical layer, the UART-based FlexWire interface of the TPS929120-Q1 easily accomplishes long distance off-board communication without impacting EMC.
The TPS929120-Q1 is a 12-channel, 40-V high-side LED driver that controls the 8-bit output current and 12-bit PWM duty cycles. The device meets multiple regulation requirements with LED open-circuit, short-to-ground, and single LED short-circuit diagnostics. A configurable watchdog also automatically sets fail-safe states when the MCU connection is lost, and, with programmable EEPROM, TPS929120-Q1 can flexibly be set for different application scenarios.
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Technische Dokumentation
Typ | Titel | Datum | ||
---|---|---|---|---|
* | Data sheet | TPS929120-Q1 12-Channel Automotive 40-V High-Side LED Driver with FlexWire datasheet (Rev. B) | PDF | HTML | 03 Feb 2021 |
User guide | TPS929xxx-Q1 Sample Code User's Guide | PDF | HTML | 10 Apr 2023 | |
Functional safety information | Streamlining Functional Safety Certification in Automotive and Industrial | 09 Jun 2020 | ||
Application note | TPS929120-Q1 Fault Handling Routing | 17 Apr 2020 | ||
Application note | TPS929120-Q1 Pin Failure Modes and Effects Analysis (FMEA) | 19 Feb 2020 | ||
Functional safety information | TPS929120-Q1 Functional Safety FIT Rate and Failure Mode Distribution | 06 Jan 2020 | ||
EVM User's guide | TPS929120EVM User's Guide (Rev. B) | 03 Dez 2019 | ||
Technical article | New LED drivers enhance your automotive lighting solutions | PDF | HTML | 28 Okt 2019 | |
Technical article | How semiconductor technologies are changing automotive lighting roadmaps | PDF | HTML | 24 Okt 2019 | |
Application note | LED Temperature Protection by Vf Monitoring | 29 Mai 2019 |
Design und Entwicklung
Weitere Bedingungen oder erforderliche Ressourcen enthält gegebenenfalls die Detailseite, die Sie durch Klicken auf einen der unten stehenden Titel erreichen.
TPS929120EVM — TPS929120-Q1-Evaluierungsmodul für 12-kanaligen LED-Treiber für die Automobilindustrie
SLVRBF8 — TPS92912x-Q1 EEPROM Configuration Tool
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HTSSOP (PWP) | 24 | Ultra Librarian |
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