Texas Instruments TPS65175ARSHR

Overview

TPS65175ARSHR 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 six independent DC-DC converters (boost, buck, synchronous buck, positive/negative charge pumps). It delivers VDD (16 V/500 mA), HVDD (8 V/±30 mA), VCC (1.8 V/400 mA), VGH (17–34 V), VGL (–1.8 to –8.1 V), and VCOM (7.5 V) in a single 56-pin QFN package.

For engineers reviewing the TPS65175ARSHR datasheet, TPS65175ARSHR pinout, TPS65175ARSHR application, or TPS65175ARSHR equivalent, this device supports I²C-programmable sequencing, thermal shutdown, input-to-output isolation switching, and panel-specific voltage compensation via external thermistor - critical for high-reliability GIP/GOA LCD power architecture design and production calibration.

Technical Context

The TPS65175ARSHR implements a multi-rail power management architecture with independent control loops: a boost converter (VDD) with soft-start and isolation FET, a buck converter (VCC) with 1.8 V default output, a synchronous buck (HVDD) tracking VDD/2, dual charge pumps (VGH/VGL) with 4-bit/6-bit programmability and temperature compensation, and a precision P-VCOM op-amp with 9-bit DAC and 3-bit gain. All outputs are digitally programmable via two-wire I²C interface.

Its integrated 12-channel level shifter supports forward/reverse operation with abnormal detection, while six gamma buffers provide 9-bit resolution across two voltage ranges (VDD–HVDD and HVDD–GND). Sequencing delays (4 × 3-bit), reset timing, and thermal shutdown (130–150 °C trip) are fully configurable - enabling one-BOM flexibility across diverse LCD panel sizes and operating temperatures.

Key Specifications

Pinout & Package

TPS65175ARSHR uses a 56-pin WQFN (7 mm × 7 mm) package with exposed thermal pad (AGND) for enhanced thermal dissipation. 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 PMIC applications.

Compared with TPS65175RSHR and TPS65170ARSLR, the TPS65175ARSHR uniquely integrates gamma buffering, 12-channel level shifting, and thermally adaptive VGH/VCOM - making it the sole fit for production-ready GIP/GOA TV power architectures requiring one-chip panel bias and timing support.

Availability

TPS65175ARSHR is available at Aetrix Electronics and suitable for large-screen GIP/GOA TVs, high-resolution monitors, and smart TV main boards requiring stable component supply, long-lifecycle support, and consistent parametric performance across manufacturing batches.

Supply support for TPS65175ARSHR 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 ICs for industrial, automotive, and consumer applications.

The TPS65175 product line is designed specifically for integrated gate driver (GIP/GOA) LCD panels, delivering complete, programmable bias power with timing signal translation - reducing system complexity and improving display reliability.

FAQ

What is the default VCC output voltage for the TPS65175ARSHR?

The TPS65175ARSHR has a factory-default VCC output voltage of 1.8 V, confirmed in TI's ordering information table and electrical characteristics section. This differs from the TPS65175RSHR variant, which defaults to 3.3 V. The VCC voltage is programmable within 1.6–2.0 V and 3.0–3.6 V ranges via I²C, but the power-on reset value is fixed at 1.8 V for the TPS65175ARSHR.

Does the TPS65175ARSHR support temperature compensation for both VGH and VCOM?

Yes, the TPS65175ARSHR supports 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: 19–34 V; high-temp: 17–32 V) and scales VCOM gain based on sensed temperature - ensuring stable LCD contrast and black-level performance from –40°C to 85°C ambient.

How many level shifter output channels does the TPS65175ARSHR provide, and what signals do they drive?

The TPS65175ARSHR integrates a 12-channel level shifter that drives six CLK outputs (CLK1–CLK6), plus EVEN, ODD, RESET, VGH_F, VGH_R, and VST. These signals translate low-voltage logic (e.g., 3.3 V T-Con outputs) to high-voltage gate timing levels (up to 34 V), with programmable propagation delay (50–120 ns) and gate shaping via the RE pin - essential for GIP/GOA gate driver synchronization.

What is the function of the isolation switch in the TPS65175ARSHR?

The isolation switch in the TPS65175ARSHR is an integrated MOSFET controlled by the SWI/SWO pins, providing input-to-output isolation between AVIN and VDD. With rDS(on) of 100–180 mΩ and 100–300 mA short-circuit current limit, it disconnects VDD during fault conditions or standby mode - preventing backfeed, improving system safety, and enabling clean power sequencing in GIP/GOA LCD systems.

Can the TPS65175ARSHR be used in place of the TPS65175RSHR without hardware changes?

No, the TPS65175ARSHR cannot be used as a drop-in replacement for the TPS65175RSHR without hardware and firmware changes. Although both share identical pinout, package, and register map, their default VCC outputs differ (1.8 V vs. 3.3 V), and associated power delivery components (inductors, capacitors) may be optimized for different load currents. Layout reuse is possible, but VCC-related circuitry and initialization code must be verified and adjusted for the TPS65175ARSHR.