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TPS92642-Q1

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汽車類同步降壓紅外 LED 驅(qū)動(dòng)器

產(chǎn)品詳情

Number of channels 1 Topology Buck Rating Automotive TI functional safety category Functional Safety-Capable Operating temperature range (°C) -40 to 125 Vin (min) (V) 5.5 Vin (max) (V) 36 Vout (min) (V) 0 Vout (max) (V) 36 Iout (max) (A) 5 Iq (typ) (mA) 1500 Switching frequency (max) (kHz) 2200 Features Fault Detection, LED Open Detection, Precision Dimming Control, Thermal shutdown
Number of channels 1 Topology Buck Rating Automotive TI functional safety category Functional Safety-Capable Operating temperature range (°C) -40 to 125 Vin (min) (V) 5.5 Vin (max) (V) 36 Vout (min) (V) 0 Vout (max) (V) 36 Iout (max) (A) 5 Iq (typ) (mA) 1500 Switching frequency (max) (kHz) 2200 Features Fault Detection, LED Open Detection, Precision Dimming Control, Thermal shutdown
HTSSOP (PWP) 16 32 mm2 5 x 6.4
  • AEC-Q100 qualified for automotive applications
    • Grade 1: –40°C to 125°C ambient operating temperature
    • Device HBM classification level H1C
    • Device CDM classification level C5
  • Functional Safety-Capable
    • Documentation available to aid functional safety system design
  • Input voltage range: 5.5 V to 36 V
    • Operation down to 5.15 V after start-up
  • Up to 5-A pulsed output current with 4% accuracy
  • Adaptive on-time current control
    • Low offset high-side current sense amplifier
    • Stable with any combination of ceramic, and aluminum capacitors
  • Programmable switching frequency from 100 kHz to 2.2 MHz
  • Advanced dimming operation
    • 1000:1 precision PWM dimming
    • 15:1 precision analog dimming
  • Internal maximum duty cycle limit
  • Cycle-by-cycle switch overcurrent protection
  • Open-drain fault indicator output
    • LED short circuit, open circuit and cable harness fault indication
  • Thermal shutdown protection
  • AEC-Q100 qualified for automotive applications
    • Grade 1: –40°C to 125°C ambient operating temperature
    • Device HBM classification level H1C
    • Device CDM classification level C5
  • Functional Safety-Capable
    • Documentation available to aid functional safety system design
  • Input voltage range: 5.5 V to 36 V
    • Operation down to 5.15 V after start-up
  • Up to 5-A pulsed output current with 4% accuracy
  • Adaptive on-time current control
    • Low offset high-side current sense amplifier
    • Stable with any combination of ceramic, and aluminum capacitors
  • Programmable switching frequency from 100 kHz to 2.2 MHz
  • Advanced dimming operation
    • 1000:1 precision PWM dimming
    • 15:1 precision analog dimming
  • Internal maximum duty cycle limit
  • Cycle-by-cycle switch overcurrent protection
  • Open-drain fault indicator output
    • LED short circuit, open circuit and cable harness fault indication
  • Thermal shutdown protection

The TPS92642-Q1 is a monolithic, synchronous Buck LED driver with a wide 5.5-V to 36-V operating input voltage range and 40-V tolerance that supports load dump for duration of 400 ms. The TPS92642-Q1 implements an adaptive on-time average current mode control based on inductor valley current detection. The adaptive on-time control provides near constant switching frequency that can be set between 100 kHz and 2.2 MHz. Inductor current sensing and closed-loop feedback enables better than ±4% accuracy over wide input, output and ambient temperature.

The high-performance infrared LED driver can independently modulate LED current using both analog or PWM dimming techniques. Linear analog dimming range with over 15:1 range is obtained by setting the IADJ voltage. PWM dimming of LED current is achieved by directly modulating the UDIM input pin with desired duty cycle. The device incorporates an internal pulse monitoring circuit that limits the maximum pulse duty cycle.

The TPS92642-Q1 incorporates advanced diagnostic and fault protection featuring: cycle-by-cycle switch current limit, bootstrap undervoltage, LED open, LED short and thermal shutdown.

The TPS92642-Q1 is available in a 6.6-mm × 5.1-mm thermally-enhanced 16-pin HTSSOP package with 0.65-mm lead pitch.

The TPS92642-Q1 is a monolithic, synchronous Buck LED driver with a wide 5.5-V to 36-V operating input voltage range and 40-V tolerance that supports load dump for duration of 400 ms. The TPS92642-Q1 implements an adaptive on-time average current mode control based on inductor valley current detection. The adaptive on-time control provides near constant switching frequency that can be set between 100 kHz and 2.2 MHz. Inductor current sensing and closed-loop feedback enables better than ±4% accuracy over wide input, output and ambient temperature.

The high-performance infrared LED driver can independently modulate LED current using both analog or PWM dimming techniques. Linear analog dimming range with over 15:1 range is obtained by setting the IADJ voltage. PWM dimming of LED current is achieved by directly modulating the UDIM input pin with desired duty cycle. The device incorporates an internal pulse monitoring circuit that limits the maximum pulse duty cycle.

The TPS92642-Q1 incorporates advanced diagnostic and fault protection featuring: cycle-by-cycle switch current limit, bootstrap undervoltage, LED open, LED short and thermal shutdown.

The TPS92642-Q1 is available in a 6.6-mm × 5.1-mm thermally-enhanced 16-pin HTSSOP package with 0.65-mm lead pitch.
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* 數(shù)據(jù)表 TPS92642-Q1 Automotive Synchronous Buck Infrared LED Driver 數(shù)據(jù)表 PDF | HTML 2023年 11月 28日
應(yīng)用手冊(cè) 減少基于攝像頭的駕駛員監(jiān)控系統(tǒng) (DMS) 的布線量 PDF | HTML 英語(yǔ)版 PDF | HTML 2023年 12月 20日
用戶指南 TPS92642-Q1 評(píng)估模塊用戶指南 PDF | HTML 英語(yǔ)版 PDF | HTML 2023年 11月 30日
證書 TPS92642EVM-203 EU RoHS Declaration of Conformity (DoC) 2022年 7月 28日

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評(píng)估板

TPS92642EVM-203 — TPS92642-Q1 評(píng)估模塊

TPS92642EVM-203 評(píng)估模塊 (EVM) 可幫助設(shè)計(jì)人員評(píng)估 TPS92642-Q1 適用于高電流 IR LED 驅(qū)動(dòng)應(yīng)用的 5.0A 降壓開關(guān)穩(wěn)壓器的操作和性能。TPS92642-Q1 設(shè)計(jì)用于控制 IR LED 二極管，具有寬輸入電壓范圍（5.5V 至 36V）、PWM 調(diào)光功能、模擬調(diào)光功能、輸入欠壓鎖定保護(hù)、故障檢測(cè)、一個(gè)內(nèi)部 5V 穩(wěn)壓器，并包含了一個(gè)內(nèi)部脈沖監(jiān)測(cè)電路，用于限制 PWM 信號(hào)的最大脈沖占空比。
用戶指南: PDF | HTML
英語(yǔ)版: PDF | HTML
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HTSSOP (PWP) 16 Ultra Librarian

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