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LCD/OLED ディスプレイ向けの電源とドライバ

TPS65120

アクティブ

固定的な 3.3V Vlogic 対応、4 チャネル、シングル インダクタ複数出力 (SIMO) バイアス IC

ご注文はこちら
データシート

TPS65120

アクティブ
データシート ご注文はこちら

製品詳細

Display type LCD unipolar IC integration LCD bias Vin (min) (V) 2.5 Vin (max) (V) 5.5 Applications 7 inches or less Source driver voltage (min) (V) 3 Source driver voltage (max) (V) 5.6 Level shifter/scan driver (Ch) 0 V_POS (min) (V) 3 V_POS (max) (V) 20 V_NEG (min) (V) -18 V_NEG (max) (V) -1.5 Features Output discharge Topology Boost, Inverting Buck-Boost Rating Catalog Operating temperature range (°C) -40 to 85
Display type LCD unipolar IC integration LCD bias Vin (min) (V) 2.5 Vin (max) (V) 5.5 Applications 7 inches or less Source driver voltage (min) (V) 3 Source driver voltage (max) (V) 5.6 Level shifter/scan driver (Ch) 0 V_POS (min) (V) 3 V_POS (max) (V) 20 V_NEG (min) (V) -18 V_NEG (max) (V) -1.5 Features Output discharge Topology Boost, Inverting Buck-Boost Rating Catalog Operating temperature range (°C) -40 to 85
VQFN (RGT) 16 9 mm² (3 mm × 3 mm)
  • Main Output, VMAIN
    • Adjustable Voltage, 3.0 V to 5.6 V/25 mA
    • Post-Regulated for Low Ripple (5mVPP)
    • ±0.8% Typical Accuracy
    • Efficiency up to 83%
  • Positive Output, VGH
    • Adjustable Voltage up to 20 V/2 mA
    • ±3% Typical Accuracy
  • Negative Output, VGL
    • Adjustable Voltage down to -18 V/2 mA
    • ±3% Typical Accuracy
  • Auxiliary 1.8 V/3.3 V Linear Regulator
  • Automatic or Programmable Power Sequencing
  • Complete 1 mm Component Profile Solution
  • 2.5 V to 5.5 V Input Voltage Range
  • Output Short Circuit Protected
  • 16-Pin QFN Package (3 × 3 × 0,9 mm)
  • APPLICATIONS
    • Small Form Factor a-Si and LTPS TFT LCD
    • Cell Phones, Smart Phones
    • PDAs, Pocket PCs
    • Portable DVD
    • Digital-Still Cameras, Camcorders
    • Handheld Instruments
    • Portable GPS
    • Car Navigation Systems
  • Main Output, VMAIN
    • Adjustable Voltage, 3.0 V to 5.6 V/25 mA
    • Post-Regulated for Low Ripple (5mVPP)
    • ±0.8% Typical Accuracy
    • Efficiency up to 83%
  • Positive Output, VGH
    • Adjustable Voltage up to 20 V/2 mA
    • ±3% Typical Accuracy
  • Negative Output, VGL
    • Adjustable Voltage down to -18 V/2 mA
    • ±3% Typical Accuracy
  • Auxiliary 1.8 V/3.3 V Linear Regulator
  • Automatic or Programmable Power Sequencing
  • Complete 1 mm Component Profile Solution
  • 2.5 V to 5.5 V Input Voltage Range
  • Output Short Circuit Protected
  • 16-Pin QFN Package (3 × 3 × 0,9 mm)
  • APPLICATIONS
    • Small Form Factor a-Si and LTPS TFT LCD
    • Cell Phones, Smart Phones
    • PDAs, Pocket PCs
    • Portable DVD
    • Digital-Still Cameras, Camcorders
    • Handheld Instruments
    • Portable GPS
    • Car Navigation Systems

The TPS6512x DC-DC converter supplies all three voltages required by amorphous-silicon (a-Si) and low-temperature poly-silicon (LTPS) TFT-LCD displays. The compact layout of the TPS6512x uses a single inductor to generate independently-regulated positive and negative outputs. A free-running variable peak current PWM control scheme time-multiplexes the inductor between outputs. This control architecture operates at a pseudo-fixed-frequency to provide fast response to line and load transients while maintaining a relatively constant switching frequency and high efficiency over a wide range of input and output voltages. Due to the high switching frequency capability of the device, inexpensive and ultra-thin 8.2 or 10 µH inductors can be used.

The main output, VMAIN, is post-regulated to provide a low-ripple source drive voltage for the LCD display. The auxiliary outputs generate a boosted output voltage, VGH, up to 20 V, and a negative output voltage, VGL, down to -18 V for the LCD gate drive. The device has internal current limiting for high reliability under fault conditions. Additionally, the device offers a fixed output linear regulator for the LCD logic circuitry.

The TPS6512x DC-DC converter supplies all three voltages required by amorphous-silicon (a-Si) and low-temperature poly-silicon (LTPS) TFT-LCD displays. The compact layout of the TPS6512x uses a single inductor to generate independently-regulated positive and negative outputs. A free-running variable peak current PWM control scheme time-multiplexes the inductor between outputs. This control architecture operates at a pseudo-fixed-frequency to provide fast response to line and load transients while maintaining a relatively constant switching frequency and high efficiency over a wide range of input and output voltages. Due to the high switching frequency capability of the device, inexpensive and ultra-thin 8.2 or 10 µH inductors can be used.

The main output, VMAIN, is post-regulated to provide a low-ripple source drive voltage for the LCD display. The auxiliary outputs generate a boosted output voltage, VGH, up to 20 V, and a negative output voltage, VGL, down to -18 V for the LCD gate drive. The device has internal current limiting for high reliability under fault conditions. Additionally, the device offers a fixed output linear regulator for the LCD logic circuitry.
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上位の文書 タイプ タイトル フォーマットオプション 最新の英語版をダウンロード 日付
* データシート Single-Inductor Quadruple-Output TFT LCD Power Supply データシート (Rev. A) 2005/03/28

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