Texas Instruments TPS65680 18-Channel Configurable Level Shifter

Texas Instruments TPS65680 18-Channel Configurable Level Shifter is a fully programmable high-voltage level shifter solution for LCD panels. This device supports up to twelve high-voltage clock outputs in either charge-sharing or gate-voltage shaping configuration and six high-voltage control outputs for generating start, clear/reset, low-frequency ODD / EVEN signals, and panel discharge. The output timing is generated by the level shifter based on a user-programmable pattern sequence. It requires only two connections to the timing controller: a line clock and a start pulse that indicates the start of a new frame. These two signals can be shared between multiple Texas Instruments TPS65680 devices in applications requiring more output channels than one device can generate.

Features

  • Programmable output pattern
    • The same hardware can support different displays
    • Ideal for non-standard / small-volume applications
    • Pattern changes during development are easy to implement
  • A simple 2-wire interface between the level shifter and TCON
    • Uses fewer TCON I/O resources / allows smaller TCON package
    • Simplifies PCB layout
    • The same 2-wire interface can be shared by multiple level shifter devices operating in parallel
  • 12 high-voltage clock outputs
  • Six high-voltage control outputs
  • Advanced functionality
    • Gate-voltage shaping
    • Charge-sharing
    • Low-frequency ODD / EVEN output generation
    • Panel discharge during shutdown
    • Output overcurrent protection
    • Overtemperature protection
  • Wide supply voltage range
    • VIN supplies from 2.7V to 5.5V
    • VGH supplies from 9V to 40V
    • VGL supplies from –4V to –18V
  • 4mm × 4mm, 32-pin QFN package

Applications

  • LCD panels using GIP / GOA / ASG technology
    • TVs
    • Monitors
    • Notebook / tablet PCs
    • Industrial equipment
    • Public signage

Simplified Schematic

Schematic - Texas Instruments TPS65680 18-Channel Configurable Level Shifter
Published: 2018-03-26 | Updated: 2025-07-03