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TPS92390

現行

具四個 200mA 通道的升壓/SEPIC 高調光性能 LED 驅動器

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產品規格表

TPS92390

現行
產品規格表 立即訂購

產品詳細資料

Number of channels 4 Vin (min) (V) 3 Vin (max) (V) 48 Vout (min) (V) 0 Vout (max) (V) 48 Switching frequency (max) (kHz) 2200 LED current per channel (mA) 200 Topology Boost, Current Sink Features Adjustable Switch Frequency, Analog Dimming, Analog/PWM mixed dimming, Direct PWM Dimming, Enable/Shutdown, Fault Detection, I2C control, OVP, PWM control, Programmable output current, Soft Start, Thermal shutdown Operating temperature range (°C) -40 to 125 Rating Catalog
Number of channels 4 Vin (min) (V) 3 Vin (max) (V) 48 Vout (min) (V) 0 Vout (max) (V) 48 Switching frequency (max) (kHz) 2200 LED current per channel (mA) 200 Topology Boost, Current Sink Features Adjustable Switch Frequency, Analog Dimming, Analog/PWM mixed dimming, Direct PWM Dimming, Enable/Shutdown, Fault Detection, I2C control, OVP, PWM control, Programmable output current, Soft Start, Thermal shutdown Operating temperature range (°C) -40 to 125 Rating Catalog
VQFN (RHB) 32 25 mm² 5 x 5
  • Input voltage operating range 3 V to 48 V
  • Four high-precision current sinks
    • Up to 200-mA DC current for each current sink
    • Current matching 1% (typical)
    • Dimming ratio 32 000:1 using 152-Hz LED output PWM frequency
    • Up to 16-bit LED dimming resolution with I2C, or PWM input
    • 8 Configurable LED strings configuration
  • Auto-phase shift PWM dimming
  • 12-bit Analog dimming
  • Switching frequency 100 kHz to 2.2 MHz
  • Boost spread spectrum for reduced EMI
  • Boost sync input to set boost switching frequency from an external clock
  • Up to 48-V VOUT boost or SEPIC DC/DC controller
    • Switching frequency 100 kHz to 2.2 MHz
    • Boost spread spectrum for reduced EMI
    • Boost sync input to set boost switching frequency from an external clock
  • Extensive fault diagnostics
  • Input voltage operating range 3 V to 48 V
  • Four high-precision current sinks
    • Up to 200-mA DC current for each current sink
    • Current matching 1% (typical)
    • Dimming ratio 32 000:1 using 152-Hz LED output PWM frequency
    • Up to 16-bit LED dimming resolution with I2C, or PWM input
    • 8 Configurable LED strings configuration
  • Auto-phase shift PWM dimming
  • 12-bit Analog dimming
  • Switching frequency 100 kHz to 2.2 MHz
  • Boost spread spectrum for reduced EMI
  • Boost sync input to set boost switching frequency from an external clock
  • Up to 48-V VOUT boost or SEPIC DC/DC controller
    • Switching frequency 100 kHz to 2.2 MHz
    • Boost spread spectrum for reduced EMI
    • Boost sync input to set boost switching frequency from an external clock
  • Extensive fault diagnostics

The TPS92390 is an automotive high-efficiency LED driver with boost controller. The Four high-precision current sinks support phase shifting that is automatically adjusted based on the number of channels in use. LED brightness can be controlled globally through the I²C interface or PWM input.

The boost controller has adaptive output voltage control based on the headroom voltages of the LED current sinks. This feature minimizes the power consumption by adjusting the boost voltage to the lowest sufficient level in all conditions. A wide-range adjustable frequency allows the TPS92390 to avoid disturbance for AM radio band.

The TPS92390 supports built-in hybrid PWM dimming and analog current dimming, which reduces EMI, extends the LED lifetime, and increases the total optical efficiency.

The TPS92390 is an automotive high-efficiency LED driver with boost controller. The Four high-precision current sinks support phase shifting that is automatically adjusted based on the number of channels in use. LED brightness can be controlled globally through the I²C interface or PWM input.

The boost controller has adaptive output voltage control based on the headroom voltages of the LED current sinks. This feature minimizes the power consumption by adjusting the boost voltage to the lowest sufficient level in all conditions. A wide-range adjustable frequency allows the TPS92390 to avoid disturbance for AM radio band.

The TPS92390 supports built-in hybrid PWM dimming and analog current dimming, which reduces EMI, extends the LED lifetime, and increases the total optical efficiency.
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TPS92391 現行 具六個 200-mA 通道的升壓/SEPIC 高調光性能 LED 驅動器 TPS92390 and TPS92391 are hardware compatible

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* Data sheet TPS92390 Boost/SEPIC High Dimming Performance LED Driver with Four 200-mA Channels datasheet PDF | HTML 2021年 3月 11日

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開發板

LP8864EVM — LP8864-Q1 4 通道車用顯示器 LED 驅動器評估模組

LP8864EVM 可協助設計人員評估 LP8864(S)-Q1 產品 (適合車用顯示器 LED 背光的 4 通道高效率 LED 驅動器) 的特性、運作及性能。LP8864(S)-Q1 產品整合升壓或 SEPIC 控制器及四個高精度電流汲極。升壓控制器具備自適性輸出電壓控制，以 LED 電流汲極的空餘空間電壓為基礎。四個電流汲極支援根據使用通道數進行自動調整的相位轉換。LED 亮度可透過 I2C 介面或 PWM 輸入控制。此產品也支援各種故障偵測功能。
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