Texas Instruments TPS65160PWPR

Overview

TPS65160PWPR from Texas Instruments is a highly integrated bias power supply IC for TFT LCD panels, delivering four regulated outputs: VS (up to 20 V/1.5 A), VLOGIC (1.8–5.0 V/1.5 A), VGH (+23 V/50 mA), and VGL (−5 V/50 mA). It integrates a 1.5% accurate step-down converter, a 1% accurate boost converter with 2.8-A switch current, dual charge-pump drivers, and adjustable power-on sequencing - all in a single HTSSOP-28 package. It targets large-screen LCD TVs and monitors requiring compact, high-current panel bias solutions.

For engineers reviewing the TPS65160PWPR datasheet, TPS65160PWPR pinout, TPS65160PWPR application, or TPS65160PWPR equivalent, key selection considerations include its 8–14 V input range, 500/750 kHz selectable switching frequency, 23-V overvoltage protection on VS, thermal shutdown at 155°C, and support for external sequencing via DLY1/DLY2 pins - critical for reliable TFT gate driver timing and ESD-sensitive display systems.

Technical Context

The TPS65160PWPR implements a voltage-mode PWM architecture with input voltage feedforward for both its main boost and step-down converters, enabling tight line/load regulation (0.03%/A typical) and stable operation with ceramic output capacitors. Its boost converter operates in continuous conduction mode across full load range using an integrated P-MOSFET (10 Ω rDS(on)) paralleled with an external Schottky diode.

Sequencing control is implemented via two independent delay timers (DLY1, DLY2), each charged by internal 4.8-µA current sources, allowing precise start-up ordering of VLOGIC → VGL → VS/VGH. The GD pin provides open-drain gate drive latched low when VS reaches ±8% regulation, enabling external MOSFET isolation for fault containment.

Key Specifications

Pinout & Package

TPS65160PWPR is housed in a thermally enhanced HTSSOP-28 (PWP) package with exposed PowerPAD™ connected to PGND. The 28-pin layout supports dual-side routing and efficient heat dissipation in space-constrained LCD TV backplane designs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS65160PWPR, the TPS65160APWPR offers lower overvoltage protection and reduced VS range for cost-sensitive designs, while the TPS65161PWPR extends functionality with a 5-V LDO - making it suitable for systems needing auxiliary power without adding a second regulator.

Availability

TPS65160PWPR is available at Aetrix Electronics and suitable for large-screen LCD TV panels, desktop monitor TFT displays, and industrial HMI display modules requiring stable component supply, long-term lifecycle support, and traceable sourcing for production programs.

Supply support for TPS65160PWPR 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 decades of expertise in display power solutions.

The TPS65160 product line was designed specifically to consolidate bias power for TFT LCD panels in consumer and industrial displays - integrating high-current boost, buck, and charge-pump functions with sequencing and protection in one package.

FAQ

What is the maximum input voltage rating for TPS65160PWPR?

The absolute maximum input voltage on VIN, SUP, and AVIN pins is 16.5 V. However, the recommended operating input voltage range is 8 V to 14 V. Exceeding 14 V may trigger undervoltage lockout release or compromise long-term reliability, especially under thermal stress. The TPS65160PWPR is optimized for 12-V nominal input systems used in LCD TVs and monitors.

How does the GD pin function in TPS65160PWPR?

The GD pin is an open-drain gate drive output that latches low when the main boost converter output VS reaches within ±8% of its regulated value. It remains low until EN2 is cycled low, enabling precise control of an external MOSFET for input-to-output isolation of VS or VGH. This feature is critical for fault containment in high-reliability LCD panel designs using the TPS65160PWPR.

Can TPS65160PWPR support adjustable VGH and VGL voltages?

Yes, TPS65160PWPR supports fully adjustable VGH and VGL outputs via external resistor dividers on FBP and FBN pins. VGH is set by R5/R6 (e.g., 680 kΩ/56 kΩ yields ~23 V), and VGL by R3/R4 (e.g., 620 kΩ/150 kΩ yields −5 V). Feedback resistors must be selected within 40–120 kΩ for R4 and total resistance between 500 kΩ and 1 MΩ to maintain stability and reference loading integrity in the TPS65160PWPR.

What is the purpose of the DLY1 and DLY2 pins on TPS65160PWPR?

DLY1 and DLY2 are timing pins that set power-on sequencing delays using external capacitors charged by internal 4.8-µA current sources. DLY1 controls the delay between VLOGIC startup and VGL activation; DLY2 sets the delay between VLOGIC and VS/VGH. This enables precise, hardware-based sequencing essential for preventing TFT gate driver latch-up - a core functional requirement of the TPS65160PWPR in display applications.

Does TPS65160PWPR require external compensation components?

Yes, the TPS65160PWPR requires external compensation on the COMP pin for the main boost converter loop. A small capacitor (typically 22 nF) and optionally a series resistor are needed to stabilize the voltage-mode controller. The step-down converter uses internal compensation, but the boost stage's external compensation allows optimization for specific inductor/capacitor combinations and load conditions - a key design flexibility built into the TPS65160PWPR architecture.