TPS68000: CCFL Controller for Full Bridge Phase Shift Topologies
Product Information
Features
8-V to 14-V Input Voltage Range
VS Output Voltage Range up to 20 V
1% Accurate Boost Converter With 2.8-A Switch Current
1.5% accurate 1.8-A Step-Down Converter
500-kHz/750-kHz Fixed Switching Frequency
Negative Charge Pump Driver for VGL
Positive Charge Pump Driver for VGH
Adjustable Sequencing for VGL, VGH
Gate Drive Signal to Drive External MOSFET
Internal and Adjustable Soft Start
Short-Circuit Protection
23-V (TPS65160) Overvoltage Protection
19.5-V (TPS65160A) Overvoltage Protection
Thermal Shutdown
Available in TSSOP-28 Package
APPLICATIONS
TFT LCD Displays for Monitor and LCD TV
PowerPAD is a trademark of Texas Instruments.
Description
The TPS65160 offers a compact power supply solution to provide all four voltages required by thin-film transistor (TFT) LCD panel. With its high current capabilities, the device is ideal for large screen monitor panels and LCD TV applications.
The device can be powered directly from a 12-V input voltage generating the bias voltages VGH and VGL, as well as the source voltage VS and logic voltage for the LCD panels. The device consists of a boost converter to provide the source voltage VS and a step-down converter to provide the logic voltage for the system. A positive and a negative charge-pump driver provide adjustable regulated output voltages VGL and VGH to bias the TFT. Both boost and step-down converters, as well as the charge-pump driver, operate with a fixed switching frequency of 500 kHz or 750 kHz, selectable by the FREQ pin.
* Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For higher volume price quotes,prices in local currency or delivery quotes, please contact your local Texas Instruments Sales Office or Authorized Distributor.
Inventory
Reported Distributor Inventory as of 10:07 AM GMT, 22 Nov 2009
** Lead time information is not available at this time. However, our information is updated daily so please check back with us soon. Please contact your preferred TI Authorized Distributor for additional information.
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