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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Special Purpose Regulators

Texas Instruments TPS65642YFFR

Name: TPS65642YFFR
Brand: Texas Instruments
SKU: TPS65642YFFR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TPS65642YFFR

Manufacturer:: Texas Instruments

Category:: Special Purpose Regulators

Package:: 56-UFBGA, DSBGA

Datasheet:: TPS65642YFFR.pdf

Description:: IC REG CONV TFT LCD 5OUT 56DSBGA

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Product details

Overview

TPS65642YFFR from Texas Instruments is a highly integrated LCD bias power management IC for notebook and tablet PCs. It integrates two synchronous boost converters (AVDD up to 9.1 V, VGH up to 40 V), two synchronous buck converters (VCORE: 1.1 V/600 mA, VIO1: 1.7–2.5 V/200 mA), one LDO (VIO2: 1.8 V/200 mA), 14-channel 10-bit programmable gamma correction, programmable VCOM calibrator with dual buffers, gate voltage shaping, and I²C interface - all in a single 56-ball DSBGA package.

For engineers reviewing the TPS65642YFFR datasheet, TPS65642YFFR pinout, TPS65642YFFR application, or TPS65642YFFR equivalent, this device supports GIP and non-GIP LCD panels, delivers precise gamma voltage correction with ±3.6 LSB INL, enables panel discharge via XAO signal, provides system reset via RST output, and features EEPROM-based configuration storage with write protection.

Technical Context

The TPS65642YFFR implements a multi-rail power architecture optimized for LCD timing-critical bias generation: AVDD and VGH boost stages use external inductors and diodes with internal MOSFETs (r_DS(ON) = 114 mΩ for AVDD, 0.41 Ω for VGH); VCORE and VIO1 employ synchronous buck topologies with integrated high- and low-side switches; VIO2 operates as an LDO when VIO1 = 2.5 V. All rails support soft-start (t_SS1 = 0.5–4 ms, t_SS2 = 4–7.5 ms) and undervoltage protection (65–75% of nominal).

Gamma correction uses a 10-bit DAC per channel (0–1023 code range) with ±1.5 LSB DNL and ±25 mV offset; VCOM calibration leverages two rail-to-rail op-amps (AVOL = 70–91 dB, SR = 25–38 V/μs) with programmable zero/full-scale error compensation. Gate voltage shaping is controlled via FLK clock and RE discharge path, with VGHM propagation delays under 200 ns.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	2.6 V to 6 V - supports single-cell Li-ion or regulated 3.3 V/5 V system supplies without pre-regulation.
AVDD Output	6 V to 9.1 V, ±1% tolerance - powers source driver ICs requiring stable high-voltage bias.
VGH Output	16 V to 40 V, ±3% tolerance - drives gate drivers; >36 V requires external cascode transistor.
VCORE Output	1.0 V to 1.3 V, ±3%, 600 mA - supplies core logic of display controller or GPU interface.
Gamma Channels	14 independent 10-bit DACs - enables fine-grained grayscale voltage tuning across full display panel.
I²C Address	0x74 (config), 0x4F (VCOM) - allows concurrent configuration of power rails and gamma/VCOM registers.
Package	56-ball DSBGA, 3.16 mm × 3.45 mm, 0.4 mm pitch - ultra-compact footprint for space-constrained mobile displays.
Thermal Shutdown	120 °C to 180 °C threshold - protects against sustained overloads during panel startup or thermal stress.

Pinout & Package

TPS65642YFFR is housed in a 56-ball, 0.4 mm pitch, 3.16 mm × 3.45 mm DSBGA (YFF) package with bottom-side thermal pad. Pin assignment follows JEDEC MO-220 standard with 7×8 ball grid (A1–H7), including dedicated ground balls (A1, A5, A7, C2, G1, G3, G7, H2, H3) and functional grouping for power, control, and analog outputs.

Pin/Terminal	Circuit Role	Design Meaning
AVDD (B7, F4, G5, H5)	Power sense & supply rail	Four dedicated balls for low-impedance connection to AVDD output capacitor; used as reference for gamma and VCOM circuitry.
VGH (F1)	Voltage sense input	Monitors VGH output for regulation feedback; internal connection to VGHM switch driver.
OUTA–OUTN (C6, C3–C5, D3–D6, E3–E6, F5–F6)	Gamma DAC outputs	14 independent buffered analog outputs (OUTA–OUTN) for gamma voltage distribution to display source drivers.
OUT1 / OUT2 (G6 / H6)	VCOM amplifier outputs	High-current, low-offset op-amp outputs driving VCOM electrodes; support ±294 mA peak sourcing/sinking.
RSET (C7)	Reference current setting	Connects external resistor to set 50 µA VCOM calibration current; determines VCOM full-scale range.
FLK (C1)	Flicker clock input	Controls timing of gate voltage shaping transitions; synchronizes VGHM discharge pulses to reduce visual flicker.
XAO (B4)	Panel discharge signal	Open-drain output that asserts low to discharge LCD panel capacitance during power-down or mode transition.
RST (B5)	System reset generator	Push-pull output delivering 2–16 ms reset pulse after VCORE ramp completion; ensures synchronized SoC/display initialization.

Key Features

Feature	Design Value
Integrated gamma correction	14-channel, 10-bit DAC with ±3.6 LSB INL and <100 mV output drop - eliminates need for external gamma IC and reduces BOM count by ≥12 components.
Programmable VCOM calibrator	Dual rail-to-rail op-amps with 50 µA set current, ±7 LSB full-scale error trim, and 70–91 dB open-loop gain - enables factory calibration of VCOM offset without trimming resistors.
Gate voltage shaping	VGHM output with <200 ns propagation delay and 12–25 Ω ON resistance - actively shapes gate driver waveform edges to suppress vertical banding and improve image uniformity.
EEPROM configuration storage	1000 write cycles, 100 ms write time, 1000 hrs data retention at 150 °C - retains gamma tables, VCOM offsets, and timing settings across power cycles without host intervention.
I²C interface	Standard/fast-mode (100/400 kHz), 7-bit addresses 0x74 and 0x4F - enables dynamic gamma adjustment during operation and runtime VCOM recalibration.
Multi-rail sequencing	Configurable soft-start (t_SS1/t_SS2) and delay timers (t_DLY1, t_DLY6) - ensures safe power-up order: VCORE/VIO1 → AVDD → VGH → VCOM → gamma, preventing latch-up or panel damage.

Applications

Notebook PC Display Power	Tablet PC LCD Bias
Use Scenario: Powering 13.3"–15.6" HD/Full HD LCD panels with integrated timing controller (TCON) in clamshell notebooks. IC Role / Device Role / Timing Role: Central LCD bias PMIC generating AVDD, VGH, VCORE, VIO1, VIO2, VCOM, and gamma voltages with coordinated sequencing and panel discharge. Use Value: Reduces solution size by 40% vs discrete bias ICs; eliminates external gamma DAC and VCOM op-amps; supports GIP and non-GIP architectures with single firmware.	Use Scenario: Driving 7"–10.1" IPS LCD panels in Android/iOS tablets where thermal headroom and board area are constrained. IC Role / Device Role / Timing Role: Single-chip bias solution providing regulated rails, programmable gamma correction, and flicker-reduced gate voltage shaping via FLK-controlled VGHM. Use Value: Enables <1.5 W total bias power at 3.3 V input; achieves <200 ns VGHM edge control to suppress vertical banding; supports fast wake-from-sleep with XAO-triggered panel discharge.
Monitor Display Subsystem	Industrial Panel PC Interface
Use Scenario: Supporting 21.5"–27" commercial monitors with wide-gamut color and high brightness requiring precise gamma tuning. IC Role / Device Role / Timing Role: Gamma reference generator with 14-channel 10-bit DACs and EEPROM storage for multiple gamma curves (sRGB, Adobe RGB, DCI-P3). Use Value: Allows field-updatable gamma profiles via I²C; maintains <±0.5% gamma voltage drift over temperature using on-chip thermistor compensation (TCOMP pin).	Use Scenario: Powering ruggedized 12"–15" sunlight-readable LCDs in medical or industrial HMIs where reliability and long-term calibration stability are critical. IC Role / Device Role / Timing Role: VCOM calibrator with dual op-amps, programmable zero/full-scale error, and thermal shutdown (120–180 °C) for fault-tolerant operation. Use Value: Eliminates manual VCOM trimming; sustains <±15 mV input offset over –40°C to 85°C; supports 1000+ hour data retention for calibration constants in EEPROM.

Notebook PC Display Power

Tablet PC LCD Bias

Use Scenario: Powering 13.3"–15.6" HD/Full HD LCD panels with integrated timing controller (TCON) in clamshell notebooks.

IC Role / Device Role / Timing Role: Central LCD bias PMIC generating AVDD, VGH, VCORE, VIO1, VIO2, VCOM, and gamma voltages with coordinated sequencing and panel discharge.

Use Value: Reduces solution size by 40% vs discrete bias ICs; eliminates external gamma DAC and VCOM op-amps; supports GIP and non-GIP architectures with single firmware.

Use Scenario: Driving 7"–10.1" IPS LCD panels in Android/iOS tablets where thermal headroom and board area are constrained.

IC Role / Device Role / Timing Role: Single-chip bias solution providing regulated rails, programmable gamma correction, and flicker-reduced gate voltage shaping via FLK-controlled VGHM.

Use Value: Enables <1.5 W total bias power at 3.3 V input; achieves <200 ns VGHM edge control to suppress vertical banding; supports fast wake-from-sleep with XAO-triggered panel discharge.

Monitor Display Subsystem

Industrial Panel PC Interface

Use Scenario: Supporting 21.5"–27" commercial monitors with wide-gamut color and high brightness requiring precise gamma tuning.

IC Role / Device Role / Timing Role: Gamma reference generator with 14-channel 10-bit DACs and EEPROM storage for multiple gamma curves (sRGB, Adobe RGB, DCI-P3).

Use Value: Allows field-updatable gamma profiles via I²C; maintains <±0.5% gamma voltage drift over temperature using on-chip thermistor compensation (TCOMP pin).

Use Scenario: Powering ruggedized 12"–15" sunlight-readable LCDs in medical or industrial HMIs where reliability and long-term calibration stability are critical.

IC Role / Device Role / Timing Role: VCOM calibrator with dual op-amps, programmable zero/full-scale error, and thermal shutdown (120–180 °C) for fault-tolerant operation.

Use Value: Eliminates manual VCOM trimming; sustains <±15 mV input offset over –40°C to 85°C; supports 1000+ hour data retention for calibration constants in EEPROM.

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
TPS65640YFFR	Lacks VIO2 LDO and gate voltage shaping; 12-channel gamma (vs 14); no FLK pin or VGHM output.	Suitable only for simpler non-GIP panels without flicker mitigation requirements; cannot support dual-supply logic (VIO1 + VIO2).	Select when cost sensitivity outweighs flicker reduction and dual-LDO flexibility; verify gamma channel count matches panel driver requirements.
RTQ2132B-QT	Single-chip solution with 12-channel gamma, no VCOM calibrator or EEPROM; uses SPI instead of I²C; no XAO or RST signals.	Targeted at automotive infotainment with AEC-Q100 Grade 2 rating; lacks panel discharge and system reset functions needed for consumer notebooks/tablets.	Choose only for automotive-grade designs requiring qualification; not drop-in compatible due to missing XAO/RST, different interface, and no VCOM calibration.

Compared with TPS65642YFFR, TPS65640YFFR omits VIO2 and gate shaping - reducing feature set but lowering cost for basic panels; RTQ2132B-QT trades EEPROM, XAO, and RST for automotive qualification and SPI interface - making it unsuitable for consumer portable display power without redesign.

Availability

TPS65642YFFR is available at Aetrix Electronics and suitable for notebook PCs, tablet PCs, and commercial monitors requiring stable component supply, precise gamma voltage generation, and integrated LCD bias sequencing.

Supply support for TPS65642YFFR 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 high-reliability IC design.

The TPS656xx family was designed specifically for LCD display bias in portable computing - integrating gamma DACs, VCOM calibrators, and multi-rail sequenced power to replace 5–7 discrete ICs in notebook and tablet power trees.

FAQ

What is the maximum VGH output voltage supported by the TPS65642YFFR?

The TPS65642YFFR supports a VGH output voltage range of 16 V to 40 V with ±3% tolerance. Voltages above 36 V require an external cascode transistor or charge pump circuit, as specified in Section 2.4 of the datasheet. The internal VGH switch has r_DS(ON) = 0.41–1 Ω and supports up to 40 mA output current, making it suitable for driving gate drivers in medium-size LCD panels.

How does the TPS65642YFFR implement panel discharge functionality?

The TPS65642YFFR implements panel discharge through the open-drain XAO pin (B4), which asserts a low-level signal during power-down or mode transitions. When activated, XAO discharges the LCD panel's inherent capacitance to prevent image retention or ghosting. The pin sinks up to 1 mA with VOL ≤ 0.5 V, and its timing is configurable via I²C registers to align with system power sequencing requirements.

Can the TPS65642YFFR be used with both GIP and non-GIP LCD displays?

Yes, the TPS65642YFFR explicitly supports both GIP (Gate-in-Panel) and non-GIP displays, as stated in Section 1.1 Features and Section 1.3 Description of the datasheet. Its gate voltage shaping function (via FLK, VGHM, and RE pins) is optimized for GIP panels to reduce flicker, while its standard VGH output and gamma correction remain fully functional for conventional non-GIP architectures without modification.

What is the role of the RSET pin on the TPS65642YFFR?

The RSET pin (C7) on the TPS65642YFFR sets the reference current for the programmable VCOM calibrator at 50 µA, establishing the full-scale range for VCOM voltage generation. A precision resistor connected between RSET and GND determines the VCOM output span; typical values yield VCOM = AVDD/2 ± 2 V. This enables factory-trimmed VCOM offsets without external components, improving display contrast uniformity and reducing calibration time.

Does the TPS65642YFFR include thermal protection, and how does it behave?

Yes, the TPS65642YFFR includes thermal shutdown with a threshold ranging from 120 °C to 180 °C (typical 150 °C). Once triggered, the device remains in shutdown until power is cycled - it does not auto-recover. Thermal metrics include θ_JA = 45 °C/W and θ_JB = 6.4 °C/W, indicating effective heat transfer to the PCB. This protection safeguards against sustained overload during panel startup or ambient temperature excursions.

TPS65642YFFR Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: -

Package/Case:: 56-UFBGA, DSBGA

Packaging:: Tape & Reel (TR)

Product Status:: Active

Applications:: Converter, TFT LCD

Voltage - Input:: 2.6V ~ 6V

Number of Outputs:: 5

Voltage - Output:: Multiple

Operating Temperature:: -40°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 56-DSBGA (3.33x2.93)

TPS65642YFFR FAQ

1.How can I place an order for TPS65642YFFR through Aetrix?

Please submit a Request for Quotation (RFQ) for TPS65642YFFR 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 TPS65642YFFR reliable?

The price and inventory of TPS65642YFFR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS65642YFFR is usually 5 days.

3.What payment methods are accepted for TPS65642YFFR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS65642YFFR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TPS65642YFFR?

TPS65642YFFR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TPS65642YFFR 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 TPS65642YFFR?

For technical support, including TPS65642YFFR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS65642YFFR requirements.

6.How does Aetrix verify that TPS65642YFFR is sourced from the original manufacturer or authorized distributors?

All TPS65642YFFR 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 TPS65642YFFR meets industry standards.

7.What is the process for return or replacement of TPS65642YFFR?

All TPS65642YFFR units undergo pre-shipment inspection (PSI). If there is an issue with TPS65642YFFR, 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 TPS65642YFFR part is unused and in its original packaging.

Return procedure for TPS65642YFFR:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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