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TPS92642-Q1

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車用同步降壓紅外線 LED 驅動器

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產品規格表

TPS92642-Q1

現行
產品規格表 立即訂購

產品詳細資料

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 Vin (max) (V) 36 Iout (max) (A) 5 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 Vin (max) (V) 36 Iout (max) (A) 5 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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類型 標題 日期
* Data sheet TPS92642-Q1 Automotive Synchronous Buck Infrared LED Driver datasheet PDF | HTML 2023年 11月 28日
Application note Reducing Cabling Effort in Camera-Based Driver Monitoring Systems (DMS) PDF | HTML 2023年 12月 18日
User guide TPS92642-Q1 Evaluation Module User's Guide PDF | HTML 2023年 11月 28日
Certificate TPS92642EVM-203 EU RoHS Declaration of Conformity (DoC) 2022年 7月 28日

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TPS92642EVM-203 — TPS92642-Q1 評估模組

TPS92642EVM-203 評估模組 (EVM) 可協助設計人員評估針對高電流 IR LED 驅動應用設計的 TPS92642-Q1 5.0A 降壓切換穩壓器的操作與性能。TPS92642-Q1 的設計目的旨在控制 IR LED 二極體，此產品具有廣泛的輸入電壓範圍 (5.5V 至 36V)、PWM 調光功能、類比調光功能、輸入欠電壓鎖定防護、故障偵測、內部 5V 穩壓器，並且整合內部脈衝監控電路來限制 PWM 訊號的最大脈衝工作循環。
使用指南: PDF | HTML
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