Texas Instruments TPS65167ARHAR

Overview

TPS65167ARHAR from Texas Instruments is a highly integrated LCD bias power management IC for large-size TFT-LCD TV and monitor panels. It delivers five regulated rails - Vs (15 V/1.7 A), VGH (30 V/50 mA), VGL (–5 V/150 mA), Vlogic (3.3 V/2.5 A), and Vaux (1.8 V/500 mA) - from a 6–14 V input, incorporating boost, buck, dual charge pumps, LDO controller, gate voltage shaping, and temperature sensing in a single 40-pin QFN package.

For engineers reviewing the TPS65167ARHAR datasheet, TPS65167ARHAR pinout, TPS65167ARHAR application, or TPS65167ARHAR equivalent, this device serves as a compact, sequenced, high-voltage bias supply with built-in safety features including overvoltage protection (Vs up to 21 V), short-circuit recovery, thermal shutdown, and adjustable high-voltage stress test mode for panel validation.

Technical Context

The TPS65167ARHAR integrates a fixed-frequency 750 kHz PWM boost converter (Vs) with 3.5-A switch current limit and overvoltage protection, a 2.5-A step-down converter (Vlogic) with adjustable or fixed 3.3-V output, and two independent charge pump stages: a positive pump (POUT → VGH) operating in auto-switching doubler/tripler mode and a negative pump (DRVN → VGL) with 150-mA capability. All regulators feature internal soft-start and feedback-based regulation using a common 1.213-V reference.

It includes a dedicated gate voltage shaping block controlled via CTRL/GDLY pins, enabling programmable VGH slew rate and timing for TFT gate driver compatibility; a temperature sensor (TEMP) with ±6°C accuracy and 5.7 mV/°C coefficient; and HVS-enabled high-voltage stress test for Vs and VGH (TPS65167 variant). The device uses external compensation (COMP), supports adjustable sequencing via EN/GDLY capacitors, and incorporates multiple independent ground domains (PGND, GND, AGND).

Key Specifications

Pinout & Package

TPS65167ARHAR is housed in a thermally enhanced 40-pin QFN package (RHA suffix) with exposed thermal die pad connected to GND. The PowerPAD™ improves thermal dissipation (R_θJA = 30°C/W), supporting continuous operation at up to 1.3 W at 85°C ambient.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS65167ARHAR, the TPS65167ARHAT offers identical functionality in volume-optimized packaging, while the TPS65165ARHAR provides cost reduction at the expense of VGH headroom, stress-test capability, and logic rail current - making it unsuitable for large-panel TV applications.

Availability

TPS65167ARHAR is available at Aetrix Electronics and suitable for large-format LCD TV panels, industrial display control units, and TFT-LCD panel validation test benches requiring stable component supply, long-term lifecycle support, and guaranteed traceability.

Supply support for TPS65167ARHAR 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 TPS65167 product line was designed specifically for TFT-LCD panel biasing in consumer and industrial displays, integrating multiple high-voltage rails, gate-shaping control, and stress-test functionality into a single compact package.

FAQ

What is the maximum allowable input voltage for the TPS65167ARHAR?

The absolute maximum input voltage on AVIN, VINB, and SUPN pins is 16.5 V. However, the recommended operating range is 6 V to 14 V per the datasheet. Exceeding 14 V may trigger undervoltage lockout hysteresis or reduce reliability; sustained operation above 14 V is not supported. The TPS65167ARHAR must be operated within this range to ensure proper regulation of all outputs including Vs, VGH, and VGL.

Does the TPS65167ARHAR support programmable VGH slew rate?

Yes, the TPS65167ARHAR supports programmable VGH slew rate through its gate voltage shaping block. By connecting an external capacitor between GDLY and GND, and configuring CTRL appropriately, the delay between Vs stabilization and VGH activation is set - enabling precise control of VGH rise time to meet TFT panel timing specifications. This function is confirmed in the functional block diagram and Figure 17 of the TPS65167ARHAR datasheet.

Can the TPS65167ARHAR be used for both TV and monitor panels?

Yes, the TPS65167ARHAR is explicitly qualified for both large-format LCD TV panels and LCD monitors, as stated in its "Applications" section. Its 30-V VGH output, 150-mA VGL capability, and 2.5-A Vlogic rail meet the bias requirements of 32–65 inch TVs and 15–27 inch monitors. The device's adjustable sequencing and gate-shaping features ensure compatibility across diverse panel timing architectures.

How does the high-voltage stress test mode work on the TPS65167ARHAR?

The TPS65167ARHAR enters high-voltage stress test mode when the HVS pin is pulled high. In this mode, RHVS is internally pulled to GND, configuring Vs for 30 V output, and the positive charge pump delivers 30 V to VGH - enabling simultaneous stress testing of source and gate driver circuits. This behavior is specific to the TPS65167 variant (not TPS65167A) and is documented in the "High Voltage Stress Test" section of the TPS65167ARHAR datasheet.

What thermal management considerations apply to the TPS65167ARHAR?

The TPS65167ARHAR uses a PowerPAD™-equipped 40-pin QFN package with R_θJA = 30°C/W. At 85°C ambient, its maximum continuous power dissipation is 1.3 W. Proper PCB layout - including ≥200 mm² copper pour connected to the exposed thermal pad and multiple vias to inner ground planes - is essential to maintain junction temperature below 125°C. Thermal shutdown triggers at 155°C with 5°C hysteresis, protecting the TPS65167ARHAR during overload conditions.