Texas Instruments TPS65162RGZR

Overview

TPS65162RGZR from Texas Instruments is a compact LCD bias IC integrating a 15-V/1.5-A boost converter (Vs), a 3.3-V/2.5-A step-down converter (Vlogic), dual regulated charge-pump drivers (VGH up to 34 V, VGL down to –2 V), and two high-speed operational amplifiers for Vcom supply. It delivers all four critical TFT-LCD panel rails with gate voltage shaping and adjustable power-on sequencing.

For engineers reviewing the TPS65162RGZR datasheet, TPS65162RGZR pinout, TPS65162RGZR application, or TPS65162RGZR equivalent, this device supports high-fidelity timing-critical LCD TV and monitor designs requiring simultaneous rail generation, fast transient response, and integrated analog signal conditioning.

Technical Context

The TPS65162RGZR implements a fixed-frequency PWM architecture with selectable 500 kHz or 750 kHz operation via the FREQ pin, enabling optimized efficiency versus transient performance trade-offs. Its boost converter uses voltage-mode control with input-voltage feedforward and external compensation (VC pin) for <0.03%/A load regulation.

Integrated gate voltage shaping (via VFLK, VDPM, RE, VGHM) enables programmable slew-rate control of VGH transitions to reduce image flicker and improve picture quality. The dual opamps provide 50-MHz bandwidth, 55-V/μs slew rate, and rail-to-rail output swing for active Vcom buffering in large-panel displays.

Key Specifications

Pinout & Package

TPS65162RGZR is housed in a thermally enhanced 48-pin QFN package (RGZ) with an exposed PowerPAD soldered to PGND1 for optimal heat dissipation. Pin numbering follows standard top-view layout with NC pins internally unconnected.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar LCD bias applications.

Compared with TPS65162RGZR, TPS65161RGZR offers reduced feature set but identical sequencing and rail accuracy, while MAX17105GCM+ trades switching efficiency and analog performance for smaller footprint and LDO simplicity - making TPS65162RGZR the only option supporting full gate-shaping and 50-MHz Vcom buffering in a single IC.

Availability

TPS65162RGZR is available at Aetrix Electronics and suitable for LCD TV, industrial HMI, and medical imaging panel designs requiring stable component supply, long-term lifecycle support, and guaranteed traceability.

Supply support for TPS65162RGZR 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 power solutions.

The TPS65162RGZR belongs to TI's LCD bias IC product line, designed specifically to integrate all essential TFT-LCD panel power and analog signal conditioning functions into a single, thermally optimized package for large-screen display systems.

FAQ

What is the maximum supported VGH output voltage for the TPS65162RGZR?

The TPS65162RGZR supports a VGH output voltage range up to 34 V, as confirmed in the Electrical Characteristics table under "Positive Charge Pump Output VGH". This rating applies under specified test conditions (VIN = 12 V, TA = –40°C to 85°C) and enables compatibility with high-voltage gate drivers used in 4K and wide-viewing-angle LCD panels. The actual achievable VGH depends on external resistor divider configuration on the FBP pin and load current.

How does the gate voltage shaping function work in the TPS65162RGZR?

The TPS65162RGZR implements gate voltage shaping through dedicated pins VFLK, VDPM, RE, and VGHM. When VFLK is asserted high and VDPM enabled, the internal circuitry generates a controlled discharge path from VGH to ground via the VGHM output, allowing external MOSFET-based shaping of VGH fall time. Resistor RE sets the slope, and CE adjusts delay - enabling reduction of display crosstalk and improved grayscale fidelity in high-resolution panels.

Can the TPS65162RGZR operate with both 500 kHz and 750 kHz switching frequencies simultaneously?

No - the TPS65162RGZR uses a single FREQ pin to select one fixed switching frequency for all integrated converters (boost, buck, and both charge pumps). Setting FREQ high configures all blocks to 750 kHz; setting it low configures all to 500 kHz. This synchronized frequency simplifies EMI filtering and avoids beat-frequency interference between power stages.

What is the purpose of the REF pin on the TPS65162RGZR?

The REF pin on the TPS65162RGZR provides a precision 1.265-V internal reference used primarily to regulate the VGL negative charge-pump output. A 220-nF capacitor must be placed directly between REF and AGND to stabilize the reference and minimize noise coupling. The REF output has a 30-μA current capability, limiting minimum feedback resistor values to ≥40 kΩ when connected to FBN.

Does the TPS65162RGZR include thermal protection, and what is its threshold?

Yes, the TPS65162RGZR includes thermal shutdown protection with a typical activation threshold of 160°C and 10°C hysteresis. When junction temperature exceeds this threshold, the device disables all switching activity until temperature falls below 150°C, then automatically resumes normal operation. This protection is independent of ambient temperature and is documented in the Absolute Maximum Ratings and Electrical Characteristics tables.