VIN

V

Up to 15 V / 400 mA

V 3

Up to 30 V / 20 mA

O

V 2

Up to 12 V / 20 mA

O

V 4

3.3 V

O

VCOM

Boost

Converter

Positive Charge

Pump

Negative

Charge Pump

VCOM Buffer

Linear Regulator

Controller

2.7 V to 5.8 V

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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.

TPS65100-Q1

SLVS849B – JULY 2008 – REVISED MARCH 2016

TPS65100-Q1 Triple-Output LCD Supply With Linear Regulator and VCOM Buffer

1

1 Features

1

•

Qualified for Automotive Applications

•

AEC-Q100 Qualified With the Following Results:

–

Device Temperature Grade 1: –40°C to 125°C

Ambient Operating Temperature Range

–

Device HBM ESD Classification Level 2

–

Device CDM ESD Classification Level C5

•

2.7-V to 5.8-V Input Voltage Range

•

1.6-MHz Fixed Switching Frequency

•

Three Independently Adjustable Outputs

•

Main Output of up to 15 V With < 1% Output

Voltage Accuracy

•

Virtual Synchronous Converter Technology

•

•

•

Integrated VCOM Buffer

•

Auxiliary 3.3-V Linear Regulator Controller

•

Internal Soft Start

•

Internal Power-On Sequencing

•

Fault Detection of all Outputs

•

Thermal Shutdown

•

Available in TSSOP-24 PowerPAD™ Package

2 Applications

•

Infotainment Systems

•

Automotive Displays

•

Instrument Clusters

•

Center Consoles

•

Rear Seat Entertainment

3 Description

The TPS65100-Q1 device offers a compact and small

power supply solution that provides all three voltages

required by thin-film transistor (TFT) LCD displays.

The auxiliary linear regulator controller can be used

to generate a 3.3-V logic power rail for systems

powered by a 5-V supply rail only.

PWM boost converter providing the source-drive

voltage for the LCD display. The TPS65100-Q1 has a

typical switch current limit of 2.3 A. A fully integrated

adjustable charge pump doubler/tripler provides the

positive

LCD

gate-drive

voltage.

An

externally

adjustable

negative

charge

pump

provides

the

negative gate-drive voltage. Due to the high 1.6-MHz

switching

frequency

of

the

charge

pumps,

inexpensive and small 220-nF capacitors can be

used.

The TPS65100-Q1 has an integrated VCOM buffer to

power the LCD backplane. For LCD panels powered

by 5 V only, the TPS65100-Q1 device has a linear

regulator controller using an external transistor to

provide a regulated 3.3-V output for the digital

circuits. For maximum safety, the TPS65100-Q1

device goes into shutdown as soon as one of the

outputs is out of regulation. The device can be

enabled again by toggling the input or the enable

(EN) pin to GND.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

TPS65100-Q1

TSSOP (24) with

PowerPAD

4.40 mm × 7.80 mm

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

TPS65100-Q1 Overview