TPS65150_16 Datasheet, PDF (1/47 Pages) Texas Instruments – Low Input Voltage, Compact LCD Bias IC

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TPS65150
SLVS576B – SEPTEMBER 2005 – REVISED JANUARY 2016
TPS65150 Low Input Voltage, Compact LCD Bias IC With VCOM Buffer
1 Features
•1 1.8-V to 6-V Input Voltage Range
• Integrated VCOM Buffer
• High-voltage Switch to Isolate V_(VGH)
• Gate-Voltage Shaping of V_(VGH)
• 2-A Internal MOSFET switch
• Main Output V_(VS) up to 15 V With <1% Output
Voltage Accuracy
• Virtual-Synchronous Converter Technology
• Regulated Negative Charge Pump Driver V_(VGL)
• Regulated Positive Charge Pump Driver V_(CPI)
• Adjustable Power-On Sequencing
• Adjustable Fault Detection Timing
• Gate Drive Signal for External Isolation MOSFET
• Out-of-Regulation Protection
• Overvoltage Protection
• Thermal Shutdown
• Available in HTSSOP-24 Package
• Available in VQFN-24 Package
2 Applications
• TFT LCD Displays for Notebooks
• TFT LCD Displays for Monitors
• Car Navigation Displays
3 Description
The TPS65150 device offers a very compact and
small power supply solution that provides all three
voltages required by thin film transistor (TFT) LCD
displays. With an input voltage range of 1.8 V to 6 V
the device is ideal for notebooks powered by a 2.5-V
or 3.3-V input rail or monitor applications with a 5-V
input voltage rail. Additionally the TPS65150 device
provides an integrated high current buffer to provide
the VCOM voltage for the TFT backplane.
Two regulated adjustable charge pump driver provide
the positive V_(VGH) and negative V_(VGL) bias voltages
for the TFT. The device incorporates adjustable
power-on sequencing for V_(VGL) as well as for V_(VGH).
This avoids any additional external components to
implement application specific sequencing. The
device has an integrated high-voltage switch to
isolate V_(VGH).
The same internal circuit can also be used to provide
a gate shaping signal of V_(VGH) for the LCD panel
controlled by the signal applied to the CTRL input.
For highest safety, the TPS65150 device has an
integrated adjustable shutdown latch feature, which
allows application-specific flexibility. The device
monitors the outputs (V_(VS), V_(VGL), V_(VGH)); and, as
soon as one of the outputs falls below its power good
threshold, the device enters shutdown latch, after its
adjustable delay time has passed by.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS65150
HTSSOP (24)
VQFN (24)
7.80 mm × 4.40 mm
4.00 mm × 4.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Block Diagram
Boost
Converter
Negative
Charge Pump
Positive
Charge Pump
Gate-Voltage
Shaping
VCOM
Buffer
V(VS)
V(VGL)
V(CPI)
V(VGH)
V(VCOM)
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.