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汽車 LED 驅動器

TPS92692-Q1

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產品規格表

TPS92692-Q1

現行
產品規格表 立即訂購

產品詳細資料

Number of channels 1 Topology Boost Controller, Buck Controller, Buck-Boost Controller, Cuk Controller, Flyback Controller, SEPIC Controller Rating Automotive Operating temperature range (°C) -40 to 125 Vin (min) (V) 4.5 Vin (max) (V) 65 Vout (min) (V) 3 Vout (max) (V) 65 Iout (max) (A) 5 Iq (typ) (mA) 1.8 Switching frequency (max) (kHz) 800 Features Adjustable Switch Frequency, Fault Detection, LED Open Detection, LED Short to Ground Detection, Precision Dimming Control, Soft Start, Spread Spectrum, Synchronization Pin, Thermal shutdown
Number of channels 1 Topology Boost Controller, Buck Controller, Buck-Boost Controller, Cuk Controller, Flyback Controller, SEPIC Controller Rating Automotive Operating temperature range (°C) -40 to 125 Vin (min) (V) 4.5 Vin (max) (V) 65 Vout (min) (V) 3 Vout (max) (V) 65 Iout (max) (A) 5 Iq (typ) (mA) 1.8 Switching frequency (max) (kHz) 800 Features Adjustable Switch Frequency, Fault Detection, LED Open Detection, LED Short to Ground Detection, Precision Dimming Control, Soft Start, Spread Spectrum, Synchronization Pin, Thermal shutdown
HTSSOP (PWP) 20 41.6 mm² (6.5 mm × 6.4 mm)
  • Wide Input Voltage: 4.5 V to 65 V
  • Better than ± 4% LED Current Accuracy over –40°C to 150°C Junction Temperature Range
  • Spread Spectrum Frequency Modulation for Improved EMI
  • Comprehensive Fault Protection Circuitry with Current Monitor output and Open Drain Fault Flag Indicator
  • Internal Analog Voltage to PWM Duty Cycle Generator for stand-alone Dimming Operation
  • Compatible with Direct PWM Input with over 1000:1 Dimming Range
  • Analog LED Current Adjust Input (IADJ) with over 15:1 Contrast Ratio
  • Integrated P-Channel Driver to enable Series FET Dimming and LED Protection
  • TPS92692-Q1: Automotive Q100 Grade 1 Qualified
  • Wide Input Voltage: 4.5 V to 65 V
  • Better than ± 4% LED Current Accuracy over –40°C to 150°C Junction Temperature Range
  • Spread Spectrum Frequency Modulation for Improved EMI
  • Comprehensive Fault Protection Circuitry with Current Monitor output and Open Drain Fault Flag Indicator
  • Internal Analog Voltage to PWM Duty Cycle Generator for stand-alone Dimming Operation
  • Compatible with Direct PWM Input with over 1000:1 Dimming Range
  • Analog LED Current Adjust Input (IADJ) with over 15:1 Contrast Ratio
  • Integrated P-Channel Driver to enable Series FET Dimming and LED Protection
  • TPS92692-Q1: Automotive Q100 Grade 1 Qualified

The TPS92692 and TPS92692-Q1 are high accuracy peak current mode based controllers designed to support step-up/down LED driver topologies. The device incorporates a rail-to-rail current amplifier to measure LED current and spread spectrum frequency modulation technique for improved EMI performance.

This high performance LED controller can independently modulate LED current using either analog or PWM dimming techniques. Linear analog dimming response with over 15:1 range is obtained by varying the voltage across the high impedance analog adjust (IADJ) input. PWM dimming of LED current is achieved by directly modulating the DIM/PWM input pin with the desired duty cycle or by enabling the internal PWM generator circuit. The PWM generator translates the DC voltage at DIM/PWM pin to corresponding duty cycle by comparing it to the internal triangle wave generator. The optional PDRV gate driver output can be used to drive an external P-Channel series MOSFET.

The TPS92692 and TPS92692-Q1 devices support continuous LED status check through the current monitor (IMON) output. The devices also include an open drain fault indicator output to indicate LED overcurrent, output overvoltage and output undervoltage conditions.

The TPS92692 and TPS92692-Q1 are high accuracy peak current mode based controllers designed to support step-up/down LED driver topologies. The device incorporates a rail-to-rail current amplifier to measure LED current and spread spectrum frequency modulation technique for improved EMI performance.

This high performance LED controller can independently modulate LED current using either analog or PWM dimming techniques. Linear analog dimming response with over 15:1 range is obtained by varying the voltage across the high impedance analog adjust (IADJ) input. PWM dimming of LED current is achieved by directly modulating the DIM/PWM input pin with the desired duty cycle or by enabling the internal PWM generator circuit. The PWM generator translates the DC voltage at DIM/PWM pin to corresponding duty cycle by comparing it to the internal triangle wave generator. The optional PDRV gate driver output can be used to drive an external P-Channel series MOSFET.

The TPS92692 and TPS92692-Q1 devices support continuous LED status check through the current monitor (IMON) output. The devices also include an open drain fault indicator output to indicate LED overcurrent, output overvoltage and output undervoltage conditions.
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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 TPS92692, TPS92692-Q1 High Accuracy LED Controller With Spread Spectrum Frequency Modulation datasheet PDF | HTML 2017/3/8
應用說明 Automotive Front Headlight Selection Guide PDF | HTML 2021/4/16
應用說明 Analog Thermal Foldback With LED Drivers 2020/6/10
技術文章 Designing daytime running lights, part 2: responding to an LED fault PDF | HTML 2018/12/6
技術文章 Designing daytime running lights, part 1: adding one-fail-all-fail LED fault detec PDF | HTML 2018/12/4
白皮書 LED Drivers for Automotive Exterior Applications (Rev. B) 2018/3/27

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

TPS92692EVM-880 — TPS92692-Q1 升壓和升壓至電池 LED 驅動器評估模組

TPS92692EVM-880 是完全組裝且經過測試的 LED 驅動器，可配置為升壓或升壓至電池拓撲，為單串列串聯 LED 供電。使用低偏移軌對軌電流感測放大器和高壓側電流感測實作，即可實現精確的閉合迴路 LED 電流穩壓。  DC LED 電流設定點可利用高阻抗類比調整 (IADJ) 輸入在 15:1 比率上改變。透過以所需工作週期直接調變 PWM/DIM 輸入接腳，或啟用內部 PWM 產生器電路，即可實現 LED 電流的 PWM 調光。可選的 PDRV 閘極驅動器輸出可用於驅動外部 P 通道系列 MOSFET。

TPS92692 Q1 支援透過電流監視器 (IMON) 輸出進行連續 LED (...)

使用指南: PDF
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模擬型號

TPS92692-Q1 Boost and Buck Boost PSpice Transient Model (Rev. A)

SLVMC05A.ZIP (121 KB) - PSpice 模型
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計算工具

SLVC686 — TPS92692-Q1 Buck-Boost Design Calculator

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計算工具

SLVC687 — TPS92692-Q1 Boost Design Calculator

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參考設計

TIDA-01581 — 具有電流平衡功能的汽車日間行車燈雙字串 LED 驅動器參考設計

此參考設計為雙串列 LED 驅動器，而且此驅動器可執行能夠平衡兩個 LED 燈環電流的運算放大器架構電路。該運算放大器電路會感測參考串列中的電流，並透過鏡射串列的回饋來控制 MOSFET 偏壓，進而調節串列間的電流。在升壓配置中，此設計使用 TPS92692-Q1 多拓撲結構 LED 驅動器來驅動 LED。TPS92692-Q1 具備可提升 EMI 性能的展頻調變功能、類比電流調整及內部 PWM 調光功能。  此設計包含使用 LMT87-Q1 類比溫度感測器的可調式線性熱折返，以及鏡射串列開路故障時的電流限制功能。此設計也具備兩種亮度模式。其中一種模式為全亮度模式 (...)
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參考設計

TIDA-050002 — 適用於汽車遠光燈和近光燈 55-W 雙降壓-升壓 LED 驅動器參考設計

此參考設計描述 TPS92692-Q1 LED 驅動器在雙路、遠光燈和近光燈應用中，具備單一控制器和功率級。此設計在升壓模式下運作以提供遠光，在升壓至電池模式下運作以提供近光。單一控制器功率級的設計使照明系統更簡單、更具成本效益。TPS92692 裝置的其他設計彈性包括類比和 PWM 調光支援，以及用於故障偵測和保護 LED 連續電流的內建監控功能。內含 EMI 濾波器，設計符合 CISPR-25 5 級傳導要求。
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HTSSOP (PWP) 20 Ultra Librarian
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