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汽車 LED 驅動器

TPS92638-Q1

現行

具有 PWM 調光功能的汽車 8 通道線性 LED 驅動器

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TPS92624-Q1 現行 具熱共享功能的車用四通道高側 LED 驅動器 Contains 4 channels instead of 8, but features thermal sharing to distribute heat with external resistor.

TPS92638-Q1

現行
產品規格表 立即訂購

產品詳細資料

Number of channels 8 Topology Current Source Rating Automotive TI functional safety category Functional Safety-Capable Operating temperature range (°C) -40 to 125 Vin (min) (V) 5 Vin (max) (V) 40 Vout (min) (V) 0 Vout (max) (V) 40 Iout (max) (A) 0.56 Iq (typ) (mA) 0.6 Features Enable/Shutdown, Fault Detection, Fault Diagnostic, LED Open Detection, LED Short to Ground Detection, Thermal Foldback, Thermal shutdown
Number of channels 8 Topology Current Source Rating Automotive TI functional safety category Functional Safety-Capable Operating temperature range (°C) -40 to 125 Vin (min) (V) 5 Vin (max) (V) 40 Vout (min) (V) 0 Vout (max) (V) 40 Iout (max) (A) 0.56 Iq (typ) (mA) 0.6 Features Enable/Shutdown, Fault Detection, Fault Diagnostic, LED Open Detection, LED Short to Ground Detection, Thermal Foldback, Thermal shutdown
HTSSOP (PWP) 20 41.6 mm² (6.5 mm × 6.4 mm)
  • Qualified for Automotive Applications
    • Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature Range
    • Device HBM ESD Classification Level H2
    • Device CDM ESD Classification Level C3B
  • Functional safety capable
    • Documentation available to aid functional safety system design
  • 8-Channel LED Driver With Analog and PWM Dimming
  • Wide Input-Voltage Range: 5 V–40 V
  • Adjustable Constant Output Current Set by Reference Resistor
    • Maximum Current: 70 mA per Channel
    • Maximum Current: 560 mA in Parallel Operation Mode
    • Accuracy: ±3% per Channel
    • Accuracy: ±4% per Device
  • PWM Dimming Input (PWM)
    • Turn ON/OFF Delay Time: 25 µs (typ.), 45 µs (max.)
  • 4-Bank PWM Dimming to Control 8 Channels
  • Open- and Shorted-LED Detection With Deglitch
  • Fault Pin for Open, Short, and Thermal-Shutdown Failure Reporting, Allowing Parallel Bus Connection of up to 15 Devices
  • Temperature-Current Foldback to Prevent Thermal Shutdown, With Programmable Threshold
  • Single Resistor for Stop-Current Set Point
  • Single Resistor for Tail-Current Set Point
  • Operating Junction Temperature Range –40°C to 150°C
  • Package: 20-Pin Thermally Enhanced PWP Package (PDSO)
  • Qualified for Automotive Applications
    • Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature Range
    • Device HBM ESD Classification Level H2
    • Device CDM ESD Classification Level C3B
  • Functional safety capable
    • Documentation available to aid functional safety system design
  • 8-Channel LED Driver With Analog and PWM Dimming
  • Wide Input-Voltage Range: 5 V–40 V
  • Adjustable Constant Output Current Set by Reference Resistor
    • Maximum Current: 70 mA per Channel
    • Maximum Current: 560 mA in Parallel Operation Mode
    • Accuracy: ±3% per Channel
    • Accuracy: ±4% per Device
  • PWM Dimming Input (PWM)
    • Turn ON/OFF Delay Time: 25 µs (typ.), 45 µs (max.)
  • 4-Bank PWM Dimming to Control 8 Channels
  • Open- and Shorted-LED Detection With Deglitch
  • Fault Pin for Open, Short, and Thermal-Shutdown Failure Reporting, Allowing Parallel Bus Connection of up to 15 Devices
  • Temperature-Current Foldback to Prevent Thermal Shutdown, With Programmable Threshold
  • Single Resistor for Stop-Current Set Point
  • Single Resistor for Tail-Current Set Point
  • Operating Junction Temperature Range –40°C to 150°C
  • Package: 20-Pin Thermally Enhanced PWP Package (PDSO)

The TPS92638-Q1 is an eight-channel linear LED driver with PWM dimming control. Its design is ideal for driving multiple strings of LEDs up to a medium power range.

This device can drive up to eight strings with one to three LEDs in each string, at a total current up to 70 mA per channel. Outputs can be in parallel to provide higher-current drive up to 560 mA.

In multiple-string applications, the device offers the advantage of having common-cathode connection of the LED stings. So, there is only a single return wire needed instead of one per LED string that a system with low-side current sense would need.

The device has the capability for switching LED current between high current and low current for stop and tail applications. Two reference resistors set the two LED current levels from each output.

The included temperature monitor reduces the LED drive current if the IC junction temperature exceeds a thermal threshold. The temperature threshold is programmable through an external resistor. One can disable the thermal current-monitor feature by connecting the TEMP pin to ground. Output of the junction temperature as an analog voltage is available as a factory program option.

The TPS92638-Q1 is an eight-channel linear LED driver with PWM dimming control. Its design is ideal for driving multiple strings of LEDs up to a medium power range.

This device can drive up to eight strings with one to three LEDs in each string, at a total current up to 70 mA per channel. Outputs can be in parallel to provide higher-current drive up to 560 mA.

In multiple-string applications, the device offers the advantage of having common-cathode connection of the LED stings. So, there is only a single return wire needed instead of one per LED string that a system with low-side current sense would need.

The device has the capability for switching LED current between high current and low current for stop and tail applications. Two reference resistors set the two LED current levels from each output.

The included temperature monitor reduces the LED drive current if the IC junction temperature exceeds a thermal threshold. The temperature threshold is programmable through an external resistor. One can disable the thermal current-monitor feature by connecting the TEMP pin to ground. Output of the junction temperature as an analog voltage is available as a factory program option.
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技術文件

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重要文件 類型 標題 格式選項 下載最新的英文版本 日期
* 資料表 TPS92638-Q1 8-Channel Linear LED Driver With PWM Dimming datasheet (Rev. C) PDF | HTML 2020/1/15
應用說明 Typical Design Guidelines for TPS92630/8-Q1 in Automotive Rear Lamp Applications PDF | HTML 2020/9/1
功能安全資訊 簡化汽車及工業領域的功 能安全認證 Download English Version 2020/6/9
技術文章 Always make the right turn: how to design fault circuits in automotive lighting sy PDF | HTML 2020/1/16
功能安全資訊 TPS92638-Q1 Functional Safety FIT Rate and Failure Mode Distribution 2020/1/6
白皮書 汽車尾燈系統的趨勢與拓撲 (Rev. A) Download English Version (Rev.A) 2019/10/9
技術文章 How to overcome size, EMI and thermal challenges of automotive LED lighting PDF | HTML 2018/4/9
白皮書 LED Drivers for Automotive Exterior Applications (Rev. B) 2018/3/27
設計指南 EMC Compatible Automotive LED Rear Lamp Sequential-Turn Animation Design Guide 2016/6/2
應用說明 How to Calculate TPS92630-Q1 Maximum Output Current for Automotive Exterior Ligh 2015/12/22

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

TPS92638EVM — TPS92638 八通道線性 LED 驅動器 EVM

德州儀器 TPS92638 評估模組包含一個 TPS92638 積體電路 (IC)、支援的被動元件以及每通道三個串聯的 OSRAM LED，該 EVM 包含 8 個通道。此 EVM 旨在協助在典型 LED 應用中評估 TPS92638。

使用指南: PDF
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開發板

TPS92638STAEVM — 具有連續轉向動畫的 EMC 相容車用 LED 後燈評估模組

本設計是一種用於車用尾燈的類比解決方案，具備序列式方向燈動畫功能。本設計相容於第三方 EMC 實驗室中的 TL81000 RI 與 BCI 測試。本設計同時具備完整的車用診斷功能，並在故障模式下維持低靜態電流。

使用指南: PDF
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模擬型號

TPS92638-Q1 Unencrypted PSpice Transient Model Package (Rev. C)

SLVMAQ1C.ZIP (111 KB) - PSpice 模型
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參考設計

TIDA-00356 — 車門控制開關參考設計

此車門控制開關參考設計展示了車門控制開關面板的概念驗證解決方案，採用無線方式與車門側後視鏡、車窗升降和車門鎖機制通訊。此參考設計採用 TI 符合車用資格的 Bluetooth® 低功耗 + MCU CC2541-Q1 系統單晶片解決方案，藉由取代昂貴且笨重的電纜線束，實現降成本、減重量並最終可節省燃油。

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參考設計

TIDA-00846 — 車用高壓側調光尾燈參考設計

此參考設計適用於汽車高壓側調光後車燈，採用 BCM 為後車燈供電。在此設計中，採用高壓側驅動器 TPS1H100-Q1 輸出具不同占空比的 PWM 電源。線性 LED 驅動器 TPS92630-Q1 和 TPS92638-Q1 用於驅動定電流下的 LED。

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參考設計

TIDA-01007 — 具有連續轉向動畫的 EMC 相容車用 LED 後燈參考設計

本設計是一種用於車用尾燈的類比解決方案，具備序列式方向燈動畫功能。本設計相容於第三方 EMC 實驗室中的 TL81000 RI 與 BCI 測試。本設計同時具備完整的車用診斷功能，並在故障模式下維持低靜態電流。
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參考設計

TIDA-01348 — 適用於車用 LED 照明系統的 CISPR 25 5 級 7.5W 額定功率尾燈參考設計

此參考設計適用於汽車尾燈應用。此設計採用由同步降壓轉換器 (LM53601-Q1) 供電的 TPS92638-Q1 線性 LED 驅動器，轉換器電源則直接來自汽車電池電壓。此設計無需 CMCC 濾波器，即可協助通過 CISPR 25 5 類傳導放射與輻射放射標準。此參考設計也能實現最佳效率。
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