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TPS65167ARHAR

4-CH LCD Bias w/ Fully Int. Positive Charge Pump, LDO Controller, HVS (VDD / VGH) & Temp. Sensor

Packaging

Package | PIN: RHA | 40
Temp: I (-40 to 85)
Carrier: Cut Tape
Qty Price
1-9 $4.01
10-24 $3.61
25-99 $3.36
100-249 $2.94
250-499 $2.76
500-749 $2.35
750-999 $1.98
1000+ $1.89

Features

  • 6 V to 14 V Input Voltage Range
  • Vs Output Voltage Range up to 19 V
  • Boost Converter With 3.5-A Switch Current
  • Boost Converter Overvoltage Protection
  • 2.5-A Step-Down Converter With 3.3-V Fixed or Adjustable Output
  • 750 kHz Fixed Switching Frequency
  • 150 mA Negative Charge Pump Driver for VGL
  • 50 mA Positive Charge Pump for VGH
  • LDO Controller for Logic Supply
  • Gate Voltage Shaping for VGH
  • Temperature Sensor Output
  • TPS65167 - High Voltage Stress Test Vs
    and VGH
  • TPS65167A - High Voltage Stress Test Vs only
  • Adjustable Sequencing
  • Gate Drive Signal for Isolation Switch
  • Short-Circuit Protection
  • Internal Soft-start
  • Thermal Shutdown
  • Available in 6 × 6 mm 40 Pin QFN Package
  • APPLICATIONS
    • LCD TV Panel
    • LCD Monitor

Texas Instruments  TPS65167ARHAR

The TPS65167 offers a compact power supply solution to provide all voltages required by a LCD panel for large size monitor and TV panel applications running from a 12-V supply rail.

The device generates all 3 voltage rails for the TFT LCD bias (Vs, VGL and VGH). In addition to that it includes a step-down converter and a LDO controller to provide two logic voltage rails. The device incorporates a high voltage switch that can be controlled by a logic signal from the external timing controller (TCON). This function allows gate voltage shaping for VGH. The device also features a high voltage stress test where the output voltage of VGH is set to typically 30 V and the output voltage of Vs is programmable to any higher voltage. The high voltage stress test is enabled by pulling the HVS pin high. The device consists of a boost converter to provide the source voltage Vs operating at a fixed switching frequency of 750 kHz. A fully integrated positive charge pump, switching automatically between doubler and tripler mode provides an adjustable regulated TFT gate on voltage VGH. A negative charge pump driver provides adjustable regulated output voltages VGL. To minimize external components the charge pumps for VGH and VGL operate at a fixed switching frequency of 1.5 MHz. The device includes safety features like overvoltage protection of the boost converter, short-circuit protection of VGH and VGL as well as thermal shutdown.