TPS929120-Q1 12-Channel automotive 40V highside LED driver with flexwire interface | TI.com

TPS929120-Q1
This product is prototype/experimental and has not been released to the market. Testing and final processes may not be complete. This product may be subject to further changes or possible discontinuation.
12-Channel automotive 40V highside LED driver with flexwire interface

 

Sample Availability

Prototype samples are available (PTPS929120QPWPRQ1). Request Now

Description

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 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.

Features

  • AEC-Q100-qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • 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
    • 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

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Parametrics

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Part number Order Topology Channels (#) Vin (Min) (V) Vin (Max) (V) Vout (Min) (V) Vout (Max) (V) Iout (Max) (A) Iq (Typ) (mA) LED current per channel (mA) Operating temperature range (C) Features Applications Package Group Package size: mm2:W x L (PKG) Rating
TPS929120-Q1 Order now Current Source     12     4.5     40         0.075     10     75     -40 to 125     Enable/Shutdown
Fault Detection
Fault Diagnostic
LED Open Detection
LED Shorted Detection
Precision Dimming Control
Thermal Shutdown    
Backlight
Daytime Running
Dome
Fog
Headlamp
Position
Stop/Tail
Tell-Tale
Turn    
HTSSOP | 24     24HTSSOP: 34 mm2: 4.4 x 7.8 (HTSSOP | 24)     Automotive    
TPS92610-Q1 Order now Current Source     1     4.5     40             450     -40 to 125     Enable/Shutdown
Fault Detection
Fault Diagnostic
LED Open Detection
LED Short to Ground Detection
Thermal Shutdown    
Dome
Foot Well
FootWell
Position
Stop/Tail
Turn    
HTSSOP | 14     14HTSSOP: 32 mm2: 6.4 x 5 (HTSSOP | 14)     Automotive    
TPS92611-Q1 Order now Current Source     1     4.5     40             300     -40 to 125     Enable/Shutdown
Fault Detection
Fault Diagnostic
LED Open Detection
LED Short to Ground Detection
Thermal Shutdown    
Dome
Foot Well
FootWell
Stop/Tail
Turn    
HVSSOP | 8     8HVSSOP: 15 mm2: 4.9 x 3 (HVSSOP | 8)     Automotive    
TPS92630-Q1 Order now Current Source     3     5     40     0     40     0.45     0.6     150     -40 to 125     Thermal Foldback     Dome
FootWell
Stop/Tail
Turn    
HTSSOP | 16     16HTSSOP: 32 mm2: 6.4 x 5 (HTSSOP | 16)     Automotive    
TPS92638-Q1 Order now Current Source     8     5     40     0     40     0.56     0.6     70     -40 to 125     Thermal Foldback     Dome
FootWell
Stop/Tail
Turn    
HTSSOP | 20     20HTSSOP: 42 mm2: 6.4 x 6.5 (HTSSOP | 20)     Automotive