Product details

Display type LCD unipolar IC integration LCD bias Vin (Min) (V) 2.7 Vin (Max) (V) 5.5 Source driver voltage (Min) (V) 5 Source driver voltage (Max) (V) 15 Level shifter/scan driver (ch) 0 V_POS (Max) (V) 30 V_NEG (Max) (V) -2 Topology Boost Rating Catalog
Display type LCD unipolar IC integration LCD bias Vin (Min) (V) 2.7 Vin (Max) (V) 5.5 Source driver voltage (Min) (V) 5 Source driver voltage (Max) (V) 15 Level shifter/scan driver (ch) 0 V_POS (Max) (V) 30 V_NEG (Max) (V) -2 Topology Boost Rating Catalog
HTSSOP (PWP) 24 34 mm² 4.4 x 7.8 VQFN (RGE) 24 16 mm² 4 x 4
  • 2.7-V to 5.8-V Input Voltage Range
  • 1.6-MHz Fixed Switching Frequency
  • 3 Independent Adjustable Outputs
  • Main Output up to 15 V With <1% Typical Output
    Voltage Accuracy
  • Virtual Synchronous Converter Technology
  • Negative Regulated Charge Pump Driver VO2
  • Positive Charge Pump Converter VO3
  • Auxiliary 3.3-V Linear Regulator Controller
  • Internal Soft Start
  • Internal Power-On Sequencing
  • Fault Detection of All Outputs (TPS65140 and
    TPS65145)
  • No Fault Detection (TPS65141)
  • Thermal Shutdown
  • System Power Good
  • Available in 24-Pin HTSSOP and 24-Pin VQFN
    PowerPAD™ Packages
  • 2.7-V to 5.8-V Input Voltage Range
  • 1.6-MHz Fixed Switching Frequency
  • 3 Independent Adjustable Outputs
  • Main Output up to 15 V With <1% Typical Output
    Voltage Accuracy
  • Virtual Synchronous Converter Technology
  • Negative Regulated Charge Pump Driver VO2
  • Positive Charge Pump Converter VO3
  • Auxiliary 3.3-V Linear Regulator Controller
  • Internal Soft Start
  • Internal Power-On Sequencing
  • Fault Detection of All Outputs (TPS65140 and
    TPS65145)
  • No Fault Detection (TPS65141)
  • Thermal Shutdown
  • System Power Good
  • Available in 24-Pin HTSSOP and 24-Pin VQFN
    PowerPAD™ Packages

The TPS6514x series offers a compact and small power supply solution to provide 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.

The main output VO1 is a 1.6-MHz fixed frequency PWM boost converter providing the source drive voltage for the LCD display. The device is available in two versions with different internal switch current limits to allow the use of a smaller external inductor when lower output power is required. The TPS65140 and TPS65141 has a typical switch current limit of 2.3 A and the TPS65145 has a typical switch current limit of 1.37 A. A fully integrated adjustable charge pump doubler or 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.

Additionally, the TPS6514x series has a system power good output to indicate when all supply rails are acceptable. For LCD panels powered by 5 V the 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 TPS65140 and TPS65145 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. The TPS65141 does not enter shutdown when one of its outputs is below its power good threshold.

The TPS6514x series offers a compact and small power supply solution to provide 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.

The main output VO1 is a 1.6-MHz fixed frequency PWM boost converter providing the source drive voltage for the LCD display. The device is available in two versions with different internal switch current limits to allow the use of a smaller external inductor when lower output power is required. The TPS65140 and TPS65141 has a typical switch current limit of 2.3 A and the TPS65145 has a typical switch current limit of 1.37 A. A fully integrated adjustable charge pump doubler or 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.

Additionally, the TPS6514x series has a system power good output to indicate when all supply rails are acceptable. For LCD panels powered by 5 V the 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 TPS65140 and TPS65145 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. The TPS65141 does not enter shutdown when one of its outputs is below its power good threshold.

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TPS65100 ACTIVE 4-CH LCD Bias w/ Fully Int. Pos. Charge Pump, 3.3V LDO Contr., 1.6A Min. Boost Ilim, Fault & VCOM This product is an LCD supply with the same features plus a Vcom.
TPS65150 ACTIVE Universal, compact LCD bias Power Supply with integrated VCOM Buffer This product has the same features, adds a Vcom, and has no LDO.

Technical documentation

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Type Title Date
* Data sheet TPS6514x Triple Output LCD Supply With Linear Regulator and Power Good datasheet (Rev. F) PDF | HTML 29 Jun 2016
Application note Understanding Undervoltage Lockout in Power Devices (Rev. A) 19 Sep 2018
Application note Basic calculation of an inverting buck-boost power stage (Rev. A) 28 Aug 2017
Application note How to Estimate the Output Voltage Range of the Charge Pumps in the TPS6510x 08 Aug 2017
Application note How to Compensate the TPS6510x and the TPS6514x 30 Aug 2016
Application note Generation of a VCOM buffer input using PWM signal 21 Dec 2015
Application note Basic Calculation of a Boost Converter's Power Stage (Rev. C) 08 Jan 2014
Application note Minimizing Ringing at the Switch Node of a Boost Converter 15 Sep 2006

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