Texas Instruments TPS65175RSHR

Overview

TPS65175RSHR from Texas Instruments is a fully programmable LCD bias IC for GIP/GOA TV panels, integrating a 12-channel level shifter, 6-channel gamma buffer, temperature-compensated VGH/VCOM generation, and five regulated power rails (VDD, HVDD, VCC, VGH, VGL). It operates from 8.6V–14.7V input and delivers up to 500mA on VDD for source driver supply in large-format LCD TVs.

For engineers reviewing the TPS65175RSHR datasheet, TPS65175RSHR pinout, TPS65175RSHR application, or TPS65175RSHR equivalent, key selection criteria include its 56-pin QFN package, I²C-programmable sequencing delays, dual-temperature VGH range (17–34V), 9-bit VCOM DAC with gain control, and integrated isolation switch for panel safety.

Technical Context

The TPS65175RSHR implements a multi-rail power architecture: a boost converter (VDD, 12.7–19V) feeds an integrated isolation FET; a synchronous buck (HVDD, VDD-tracking) and standard buck (VCC, 1.6–3.6V) provide logic supplies; dual charge pumps generate VGH (17–34V) and VGL (–1.8 to –8.1V); and a P-VCOM op-amp with 9-bit reference and 3-bit gain enables precise common-voltage tuning.

Its 12-channel level shifter supports forward/reverse operation with abnormal detection, while six gamma buffers (3 high-side, 3 low-side) deliver 10–30mA per channel with ±0.6 LSB INL. All outputs and sequencing delays are programmed via I²C interface with non-volatile storage, enabling single-BOM flexibility across panel variants.

Key Specifications

Pinout & Package

TPS65175RSHR uses a 56-pin WQFN package (7mm × 7mm) with exposed thermal pad (AGND) for enhanced thermal performance. Pin functions are validated per TI SLVSBD1B datasheet Rev. AUGUST 2025.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS65175ARSHR, the TPS65175RSHR provides higher VCC output (3.3V vs. 1.8V) for legacy T-Con compatibility, while TPS65170RSLR omits gamma, VCOM, and level-shifting-making it unsuitable for GOA-based large panels.

Availability

TPS65175RSHR is available at Aetrix Electronics and suitable for large-format LCD TV panels, GIP/GOA monitors, and industrial HMI displays requiring stable component supply, programmable bias rail sequencing, and temperature-compensated VGH/VCOM generation.

Supply support for TPS65175RSHR 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 electronics.

The TPS65175 product line was designed specifically for GIP/GOA LCD TV and monitor power architectures, integrating bias rails, gamma references, VCOM control, and high-voltage level shifting into a single programmable IC to replace multi-chip solutions.

FAQ

What is the default VCC output voltage for TPS65175RSHR?

The TPS65175RSHR has a factory-default VCC output voltage of 3.3V, adjustable via I²C programming within 1.6V–2.0V or 3.0V–3.6V ranges. This differs from the TPS65175ARSHR variant, which defaults to 1.8V. The VCC rail powers the timing controller (T-Con) logic section and supports up to 400mA continuous current with ±3% accuracy.

Does TPS65175RSHR support temperature compensation for both VGH and VCOM?

Yes, the TPS65175RSHR supports independent temperature compensation for both VGH and VCOM using a single external thermistor network connected to the TCOMP pin. The device adjusts VGH across two ranges (low-temp: 19–34V; high-temp: 17–32V) and scales VCOM gain based on measured temperature - ensuring stable gate drive and common-electrode voltage across –40°C to 85°C ambient.

How many programmable sequencing delays does TPS65175RSHR provide?

The TPS65175RSHR provides four independent programmable sequencing delays, each configurable with 3-bit resolution (0–7 steps). These delays control the power-up and power-down timing between critical rails including VDD, HVDD, VCC, VGH, VGL, gamma outputs, and level shifter enable signals - essential for preventing latch-up and ensuring safe panel initialization.

What is the function of the isolation switch in TPS65175RSHR?

TPS65175RSHR integrates an isolation MOSFET controlled by SWI (input) and SWO (output) pins. It disconnects the boost converter's VDD output from downstream circuitry during overvoltage or fault conditions, protecting the LCD panel and source drivers. The switch features 100–180 mΩ on-resistance and 100–300 mA short-circuit current limiting.

Can TPS65175RSHR drive GOA circuits directly?

Yes, the TPS65175RSHR directly drives GOA circuits via its integrated 12-channel level shifter, which generates six CLK outputs (CLK1–CLK6), plus EVEN, ODD, RESET, VST, VGH_F, and VGH_R signals. Each output supports programmable dead time, propagation delay (60–120 ns), and high/low-side drive strength - eliminating need for external level-shifting ICs in GIP/GOA TV designs.