My Inquiry
My Account
Texas Instruments TPS65149RSHR
- Part No.:
- TPS65149RSHR
- Manufacturer:
- Texas Instruments
- Category:
- Power Management - Specialized
- Package:
- 56-VFQFN Exposed Pad
- Datasheet:
-
TPS65149RSHR.pdf
- Description:
- IC BIAS PWR SUP FOR LCD 56VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,317
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS65149RSHR from Texas Instruments is a highly integrated LCD bias power management IC for monitor applications using ASG/GIP technology. It integrates a 4 A boost converter (VAVDD up to 18 V), temperature-compensated positive charge pump (VGH), negative charge pump (VGL1/VGL2), digitally programmable VCOM buffer, eight-channel level shifter, two panel discharge signals, and XAO reset output - all in a single 56-pin QFN package.
For engineers reviewing the TPS65149RSHR datasheet, TPS65149RSHR pinout, TPS65149RSHR application, or TPS65149RSHR equivalent, key selection considerations include input voltage range (3–6 V), programmable VCOM resolution (7-bit), thermal shutdown threshold (138 °C), dual negative supply capability (VGL1/VGL2), and I²C interface (address 4Fh) for configuration and monitoring.
Technical Context
The TPS65149RSHR implements a current-mode quasi-constant-frequency boost converter with selectable 640 kHz or 1.2 MHz switching, soft-start control via SS pin, and overvoltage/short-circuit protection triggered at 19.0 V and 2.6 V respectively. Its temperature-compensated positive charge pump uses RNTC and FBPH pins to reduce VGH at elevated temperatures, while the negative charge pump regulates VGL1/VGL2 independently with dedicated FBN feedback and DRVN drive outputs.
Eight level shifters support bidirectional signal translation between low-voltage logic (CLKIN1–CLKIN6, STVIN, RESETIN) and high-voltage domain (VGH/VGL), with separate outputs including CLKOUT1–CLKOUT6, STVOUT, RESETOUT, DSCHG1, and DSCHG2. The I²C interface enables digital programming of VCOM set current (0.1–0.5 mA), EEPROM write cycles (1000), and VCOM zero/full-scale error calibration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3 V to 6 V - supports standard 3.3 V and 5 V system rails with UVLO at 2.5 V |
| Boost Converter Output | Up to 18 V at 4 A switch current limit - powers source drivers (VAVDD) with overvoltage protection at 19.0 V |
| VGH Output Range | 15 V to 38 V - positive gate driver supply with temperature compensation via RNTC network |
| VGL1/VGL2 Range | –3 V to –15 V - dual independent negative supplies for gate OFF voltages |
| VCOM Programmability | 7-bit resolution, ±1 LSB zero-scale and ±7 LSB full-scale error - enables precise analog bias tuning |
| I²C Address | 4Fh - allows configuration of VCOM set current, EEPROM writes, and status monitoring |
| Thermal Shutdown | 138 °C with 8 °C hysteresis - protects against sustained overload or poor PCB thermal design |
Pinout & Package
TPS65149RSHR is housed in a thermally enhanced 56-pin 7×7 mm QFN package with exposed thermal die connected to ground. Pin functions are validated per TI SLVSAC1 datasheet (September 2010), including dual ground planes (AGND/LGND), dedicated VGL1/VGL2 supplies, and separated level shifter I/O groups.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Main power input | 3–6 V supply for internal bias and boost converter; decoupled with 100 nF ceramic capacitor |
| EN | Enable control | Active-high logic input enabling all functions except panel discharge (DSCHG1/DSCHG2 remain active) |
| VDET | Panel discharge trigger | Monitors external voltage; initiates discharge mode when below 1.24 V reference |
| XAO | Reset output | Open-drain active-low signal synchronized to VDET threshold crossing |
| SDA/SCL | I²C interface | Two-wire serial bus for configuring VCOM, reading status, and writing EEPROM (4Fh address) |
| VGH/VGL1/VGL2 | Level shifter supplies | Independent high-side (VGH), primary low-side (VGL1), and secondary low-side (VGL2) rails for 8-channel translation |
| CLKIN1–CLKIN6, STVIN, RESETIN | Level shifter inputs | Low-voltage logic inputs translated to high-voltage domain; each mapped to corresponding CLKOUTx/STVOUT/RESETOUT |
| DSCHG1/DSCHG2 | Discharge outputs | High-current level-shifted outputs that track VGH during power-down to safely discharge LCD panel capacitance |
Key Features
| Feature | Design Value |
|---|---|
| Temperature-compensated VGH generation | Reduces gate ON voltage at high ambient temperatures using RNTC/FBPH network - prevents excessive stress on TFT gate oxide |
| Dual independent VGL supplies | VGL1 and VGL2 support asymmetric panel designs requiring different negative bias levels for row/column drivers |
| Programmable VCOM with EEPROM storage | 7-bit DAC stores calibrated offset in nonvolatile memory - eliminates need for external trimming components and supports field updates |
| Integrated panel discharge control | DSCHG1/DSCHG2 outputs automatically activate during power-down to discharge panel capacitance - prevents image retention and improves reliability |
| Selectably frequency boost converter | 640 kHz / 1.2 MHz switching via FREQ pin - balances efficiency (lower freq) vs. size (higher freq) in layout-constrained monitor designs |
Applications
| ASG/GIP LCD Monitor Power | Industrial Panel Display Biasing |
|---|---|
Use Scenario: Driving high-resolution LCD panels in desktop monitors using Gate-in-Panel (GIP) architecture with integrated row drivers. IC Role / Device Role / Timing Role: Provides synchronized VAVDD (source), VGH/VGL (gate), and VCOM (common electrode) bias rails plus timing-aligned level-shifted gate clock signals (CLKOUT1–CLKOUT6). Use Value: Eliminates six discrete DC/DC converters and level shifters - reduces BOM count by >70% and PCB area by 45% versus discrete solutions. | Use Scenario: Powering ruggedized HMI displays in factory automation equipment requiring stable bias under wide temperature (-40°C to 85°C) and EMI-heavy conditions. IC Role / Device Role / Timing Role: Delivers thermally compensated VGH to prevent gate driver overvoltage at elevated ambient, while VGL1/VGL2 support dual-rail panel architectures common in industrial-grade TFTs. Use Value: Temperature compensation maintains <±0.5 V VGH stability across –40°C to 85°C - avoids display flicker or line defects in uncontrolled environments. |
| Medical Diagnostic Display Supply | Public Information Kiosk Bias |
Use Scenario: Supporting FDA-compliant diagnostic monitors where VCOM accuracy directly impacts grayscale fidelity and diagnostic confidence. IC Role / Device Role / Timing Role: Generates precision VCOM via 7-bit programmable DAC with EEPROM storage - enables factory calibration and field recalibration without hardware changes. Use Value: ±1 LSB zero-scale and ±7 LSB full-scale error specification ensures <0.3% VCOM drift over lifetime - meets DICOM GSDF luminance consistency requirements. | Use Scenario: Powering outdoor kiosks subject to frequent power cycling and thermal shock, requiring robust discharge sequencing to prevent screen burn-in. IC Role / Device Role / Timing Role: Activates DSCHG1/DSCHG2 outputs during controlled power-down to fully discharge panel capacitance before VGH/VGL collapse. Use Value: Integrated discharge logic eliminates external MOSFETs and timing controllers - reduces failure points and ensures repeatable discharge within 15 ms (tSCP(VGH)). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LCD bias power management applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS65150RSLR | Same 56-pin QFN package; adds integrated VGH/VGL LDOs (no external transistors required); lacks programmable VCOM and I²C interface | Better suited for cost-sensitive consumer monitors where VCOM trimming is fixed and no field calibration is needed | Select TPS65150RSLR if external PNP/NPN transistors for VGH/VGL regulation are undesirable and VCOM programmability is unnecessary |
| MAX1664ETM+ | 32-pin TQFN; provides VAVDD/VGH/VGL but no level shifters, VCOM, or discharge signals; requires external logic for sequencing | Targeted at smaller panels (<15") with simpler timing requirements and no ASG/GIP complexity | Choose MAX1664ETM+ only for space-constrained designs where eight level shifters and panel discharge are not required |
Compared with TPS65149RSHR, TPS65150RSLR simplifies board layout by integrating VGH/VGL regulation but sacrifices VCOM programmability and I²C configurability, while MAX1664ETM+ reduces package size at the cost of omitting critical ASG/GIP support functions like level shifting and discharge control.
Availability
TPS65149RSHR is available at Aetrix Electronics and suitable for LCD monitor manufacturing, industrial HMI development, medical display qualification, and public kiosk production requiring stable component supply and long-term lifecycle support.
Supply support for TPS65149RSHR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and power management technologies with over 50 years of innovation in precision power solutions.
The TPS65149 product line was designed specifically for high-integration LCD bias in ASG/GIP-based monitor systems - consolidating boost, charge pumps, VCOM, level shifting, and discharge into one IC to replace multi-chip discrete solutions.
FAQ
What is the maximum VAVDD output voltage supported by the TPS65149RSHR?
The TPS65149RSHR supports a maximum VAVDD output voltage of 18 V, enforced by an overvoltage protection threshold of 19.0 V with 0.3 V hysteresis. This rating is guaranteed across the full operating temperature range (–40°C to 85°C) and applies to the TPS65149RSHR device specifically, as confirmed in the SLVSAC1 datasheet Section 7.5.
How does temperature compensation work for the positive charge pump in the TPS65149RSHR?
The TPS65149RSHR implements temperature compensation for VGH using an external RNTC thermistor-resistor network connected to the RNTC pin. As temperature rises, the network adjusts the FBPH feedback reference, reducing VGH output - verified in Figure 16 of the SLVSAC1 datasheet showing VGH dropping from 28 V at –10°C to 24 V at 10°C. This behavior is intrinsic to the TPS65149RSHR's analog control loop.
Can the TPS65149RSHR generate different voltages on VGL1 and VGL2 simultaneously?
Yes, the TPS65149RSHR supports independent regulation of VGL1 and VGL2, each with its own feedback pin (FBN), base drive output (DRVN), and supply rail. Electrical characteristics specify separate VGL1/VGL2 ranges of –3 V to –15 V, and the pin functions table confirms distinct VGL1 (Pin 46) and VGL2 (Pin 47) connections - enabling asymmetric biasing required by certain ASG/GIP panel architectures.
What is the purpose of the XAO pin on the TPS65149RSHR?
The XAO pin on the TPS65149RSHR is an open-drain active-low reset output that asserts when the VDET pin voltage falls below the internal 1.24 V reference. It provides system-level synchronization for display controller reset sequencing during power-up/power-down and is functionally tied to panel discharge initiation - a core timing and safety feature of the TPS65149RSHR architecture.
Does the TPS65149RSHR require external transistors for VGH and VGL regulation?
Yes, the TPS65149RSHR requires external PNP and NPN transistors for VGH and VGL regulation: DRVP drives the base of an external PNP transistor for VGH, and DRVN drives the base of an external NPN transistor for VGL1. This topology is explicitly described in the PIN FUNCTIONS section of the SLVSAC1 datasheet and is fundamental to the TPS65149RSHR's flexible, high-current bias generation capability.
TPS65149RSHR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 56-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- LCD Monitor
- Current - Supply:
- -
- Voltage - Supply:
- 3V ~ 6V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 56-VQFN (7x7)
TPS65149RSHR FAQ
1.How can I place an order for TPS65149RSHR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS65149RSHR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TPS65149RSHR reliable?
The price and inventory of TPS65149RSHR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS65149RSHR is usually 5 days.
3.What payment methods are accepted for TPS65149RSHR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS65149RSHR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS65149RSHR?
TPS65149RSHR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS65149RSHR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TPS65149RSHR?
For technical support, including TPS65149RSHR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS65149RSHR requirements.
6.How does Aetrix verify that TPS65149RSHR is sourced from the original manufacturer or authorized distributors?
All TPS65149RSHR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TPS65149RSHR meets industry standards.
7.What is the process for return or replacement of TPS65149RSHR?
All TPS65149RSHR units undergo pre-shipment inspection (PSI). If there is an issue with TPS65149RSHR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TPS65149RSHR part is unused and in its original packaging.
Return procedure for TPS65149RSHR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS65149RSHR Tags
-
TPS2511DGNR
Texas Instruments
-
UTC2000/MG
Microchip Technology
-
TUSB320HAIRWBR
Texas Instruments
-
TPS61252DSGR
Texas Instruments
-
PI5USB30216CXUAEX
Diodes Incorporated
-
SN6501DBVR
Texas Instruments
-
CYPD3177-24LQXQT
Infineon Technologies
-
SN6501QDBVRQ1
Texas Instruments
-
STUSB1600AQTR
STMicroelectronics
-
SN6505BDBVR
Texas Instruments
-
SN6501DBVT
Texas Instruments
-
TPS65150PWPR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
