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汽車 LED 驅動器

TPS929121-Q1

現行

具 FlexWire 介面的 12 通道車用 40-V 高電壓側 LED 驅動器

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產品規格表

TPS929121-Q1

現行
產品規格表 立即訂購

產品詳細資料

Number of channels 12 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 Iout (max) (A) 0.075 Iq (typ) (mA) 10 Features Enable/Shutdown, Fault Detection, Fault Diagnostic, LED Open Detection, LED Short to Ground Detection, LED Weak Supply Diagnostics, PWM Dimming, Reference Resistor Open or Short Detection, Thermal Error Flag, Thermal Prewarning and Shutdown, Thermal shutdown
Number of channels 12 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 Iout (max) (A) 0.075 Iq (typ) (mA) 10 Features Enable/Shutdown, Fault Detection, Fault Diagnostic, LED Open Detection, LED Short to Ground Detection, LED Weak Supply Diagnostics, PWM Dimming, Reference Resistor Open or Short Detection, Thermal Error Flag, Thermal Prewarning and Shutdown, Thermal shutdown
HTSSOP (PWP) 24 49.92 mm² 7.8 x 6.4
  • 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
    • 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
  • 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
    • 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 TPS929121-Q1 easily accomplishes long distance off-board communication without impacting EMC.

The TPS929121-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, TPS929121-Q1 can flexibly be set for different application scenarios.

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 TPS929121-Q1 easily accomplishes long distance off-board communication without impacting EMC.

The TPS929121-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, TPS929121-Q1 can flexibly be set for different application scenarios.
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TPS929120-Q1 現行 具 FlexWire 介面的 12 通道車用 40-V 高電壓側 LED 驅動器 Low-supply detection threshold decreased to 5V

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類型 標題 日期
* Data sheet TPS929121-Q1 12-Channel Automotive 40-V High-Side LED Driver With FlexWire datasheet (Rev. A) PDF | HTML 2021年 2月 5日
User guide TPS929xxx-Q1 Sample Code User's Guide PDF | HTML 2023年 4月 10日

設計與開發

如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。

開發板

TPS929120EVM — 12 通道汽車 LED 驅動器的 TPS929120-Q1 評估模組

TPS929120-Q1 評估模組 (EVM) 協助設計人員評估 TPS929120-Q1 的操作和性能，是一款具有 FlexLED 介面的 12 通道 40-V 高側 LED 驅動器，可個別控制汽車照明應用的輸出電流和 PWM 工作週期。此外也具 LED 開路、接地短路和單一 LED 短路診斷。支援在 MCU 連線遺失或沒有 MCU 控制的情況下，自動輸入預先定義的容錯狀態。
使用指南: PDF
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應用軟體及架構

TPS92912XQ1-SW-F5529 — Reference code for TPS92912x-Q1 based on MSP430F5529 (MSP-EXP430F5529LP)

This reference code showcases the ability of the MSP430F5529 device to communicate with the TPS929120-Q1 and TPS929121-Q1 LED driver. The code configures the MCU using UART to drive 12 LEDs which is available on the TPS929120EVM.
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產品
汽車 LED 驅動器
TPS929120-Q1 — 具 FlexWire 介面的 12 通道車用 40-V 高電壓側 LED 驅動器 TPS929121-Q1 — 具 FlexWire 介面的 12 通道車用 40-V 高電壓側 LED 驅動器
下載選項
開發模組 (EVM) 的 GUI

TPS929120EVM-GUI-SW — TPS929120EVM GUI

支援產品和硬體

支援產品和硬體

產品
汽車 LED 驅動器
TPS929121-Q1 — 具 FlexWire 介面的 12 通道車用 40-V 高電壓側 LED 驅動器
硬體開發
開發板
TPS929120EVM — 12 通道汽車 LED 驅動器的 TPS929120-Q1 評估模組
下載
計算工具

SLVRBF8 — TPS92912x-Q1 EEPROM Configuration Tool

支援產品和硬體

支援產品和硬體

產品
汽車 LED 驅動器
TPS929120-Q1 — 具 FlexWire 介面的 12 通道車用 40-V 高電壓側 LED 驅動器 TPS929121-Q1 — 具 FlexWire 介面的 12 通道車用 40-V 高電壓側 LED 驅動器
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模擬工具

PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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HTSSOP (PWP) 24 Ultra Librarian
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