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TPS929240-Q1

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Automotive 24-channel 40-V high-side LED and OLED driver

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Data sheet

TPS929240-Q1

ACTIVE
Data sheet Order now

Product details

Number of channels 24 Topology Current Source Rating Automotive TI functional safety category Functional Safety-Capable Operating temperature range (°C) -40 to 125 Vin (min) (V) 4.5 Vin (max) (V) 40 Vout (min) (V) 0 Vout (max) (V) 40 Iout (max) (A) 0.1 Iq (typ) (mA) 10 Features Enable/Shutdown, Fault Detection, Fault Diagnostic, LED Open Detection, LED Short Detection, Precise dimming control, Thermal shutdown
Number of channels 24 Topology Current Source Rating Automotive TI functional safety category Functional Safety-Capable Operating temperature range (°C) -40 to 125 Vin (min) (V) 4.5 Vin (max) (V) 40 Vout (min) (V) 0 Vout (max) (V) 40 Iout (max) (A) 0.1 Iq (typ) (mA) 10 Features Enable/Shutdown, Fault Detection, Fault Diagnostic, LED Open Detection, LED Short Detection, Precise dimming control, Thermal shutdown
HTSSOP (DCP) 38 62.08 mm² 9.7 x 6.4
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • 24-channel precision high-side current output:
    • Device supply voltage 4.5V to 40V
    • LED supply voltage 4V to 36V
    • Up to 100mA channel current set by resistor
    • 2-bit global, 6-bit independent current setting
    • High-current accuracy < ±5% at 5mA to 100mA
    • Low voltage drop 750mV at 100mA
    • 12-bit independent PWM dimming
    • Programmable PWM frequency up to 20kHz
    • Phase-shift PWM dimming
    • Linear and exponential dimming method
  • FlexWire™ control interface
    • Up to 1MHz clock frequency
    • Maximum 16 devices on one FlexWire bus
    • Up to 24 bytes data transaction in one frame
    • 5V 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
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • 24-channel precision high-side current output:
    • Device supply voltage 4.5V to 40V
    • LED supply voltage 4V to 36V
    • Up to 100mA channel current set by resistor
    • 2-bit global, 6-bit independent current setting
    • High-current accuracy < ±5% at 5mA to 100mA
    • Low voltage drop 750mV at 100mA
    • 12-bit independent PWM dimming
    • Programmable PWM frequency up to 20kHz
    • Phase-shift PWM dimming
    • Linear and exponential dimming method
  • FlexWire™ control interface
    • Up to 1MHz clock frequency
    • Maximum 16 devices on one FlexWire bus
    • Up to 24 bytes data transaction in one frame
    • 5V 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 the 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 TPS929240-Q1 easily accomplishes long distance off-board communication without impacting EMC.

The TPS929240-Q1 is a 24-channel, 40V 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, TPS929240-Q1 can flexibly be set for different application scenarios.

With the 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 TPS929240-Q1 easily accomplishes long distance off-board communication without impacting EMC.

The TPS929240-Q1 is a 24-channel, 40V 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, TPS929240-Q1 can flexibly be set for different application scenarios.
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* Data sheet TPS929240-Q1 24-Channel, Automotive, 40V, High-Side (O)LED Driver With FlexWire™ Interface datasheet (Rev. B) PDF | HTML 16 Apr 2024
User guide TPS929xxx-Q1 Sample Code User's Guide PDF | HTML 10 Apr 2023
Application note Typical Application to Achieve High Immunity to BCI PDF | HTML 07 Nov 2022

Design & development

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Evaluation board

TPS929240EVM — TPS929240-Q1 evaluation module for 24-channel automotive LED driver

The TPS929240-Q1 evaluation module (EVM) helps designers evaluate the operation and performance of TPS929240-Q1, a 12-channel 40-V highside LED driver with FlexLED™ interface to individually control output current and PWM dutycycle for automotive lighting applications. It also has LED open-circuit, (...)

User guide: PDF | HTML
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Application software & framework

TPS929240Q1-F5529-SW — TPS929240-Q1 reference code based on MSP430F5529 (MSP-EXP430F5529LP)

This reference code showcases the ability of the MSP430F5529 device to communicate with the TPS929240-Q1 LED driver. The code configures the MCU using UART to drive 24 LEDs which is available on the TPS929240EVM.
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Supported products & hardware

Supported products & hardware

Products
Automotive LED drivers
TPS929240-Q1 — Automotive 24-channel 40-V high-side LED and OLED driver
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Calculation tool

SLVRBM1 — TPS929240-Q1 TPS929160-Q1 EEPROM Configuration Tool

Supported products & hardware

Supported products & hardware

Products
Automotive LED drivers
TPS929160-Q1 — Automotive 16-channel 40-V high-side LED and OLED driver TPS929240-Q1 — Automotive 24-channel 40-V high-side LED and OLED driver
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