Texas Instruments TPS65150PWPG4

Overview

TPS65150PWPG4 from Texas Instruments is a low-input-voltage LCD bias IC integrating a 15-V boost converter, regulated −2-V negative charge pump (VGL), 30-V positive charge pump (VGH), gate-voltage shaping circuit, and 1.2-A VCOM buffer - all in a single HTSSOP-24 package. It delivers precise TFT panel biasing for notebook and automotive navigation displays with <1% output voltage accuracy on VS and adjustable power-on sequencing.

For engineers reviewing the TPS65150PWPG4 datasheet, TPS65150PWPG4 pinout, TPS65150PWPG4 application, or TPS65150PWPG4 equivalent, key selection considerations include input voltage range (1.8–6 V), integrated VCOM buffering capability (1.2 A), gate-voltage shaping control via ADJ/CTRL pins, fault delay programmability (FDLY), and dual-package availability (HTSSOP-24 and VQFN-24).

Technical Context

The TPS65150PWPG4 implements a virtual-synchronous boost converter operating at 1.2 MHz with CCM maintained down to light loads via internal synchronous rectifier Q2. Its three regulated outputs - VS (up to 15 V), VGL (−2 V), and VGH (30 V) - are independently controlled using dedicated feedback paths (FB, FBN, FBP) and precision internal references (1.146 V for boost, 1.213 V for charge pumps).

Gate-voltage shaping is achieved through an internal high-voltage MOSFET (Q5, rDS(on) = 12–30 Ω) switched by CPI and controlled via ADJ capacitor timing and CTRL logic signal. Power-on sequencing is implemented using two independent delay circuits (DLY1, DLY2) with programmable capacitor-based timing, while fault detection uses FDLY-configurable latch-off after out-of-regulation detection on VS, VGL, or VGH.

Key Specifications

Pinout & Package

TPS65150PWPG4 is packaged in a thermally enhanced 24-pin HTSSOP (PWP) with exposed thermal pad soldered to GND. Pin functions are fully validated per TI SLVS576B Rev B datasheet (pages 3–5). The package measures 7.80 mm × 4.40 mm and supports standard reflow profiles.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS65150PWPG4, TPS65151PWPR offers identical bias generation performance in a smaller package but lacks HTSSOP mechanical compatibility, while TPS65150RGER provides identical function with optimized manufacturability - neither is pin-compatible without layout revision due to differing package footprints and thermal pad configurations.

Availability

TPS65150PWPG4 is available at Aetrix Electronics and suitable for notebook LCD modules, automotive navigation displays, and industrial HMI panels requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for TPS65150PWPG4 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 90 years of innovation in high-reliability electronic components.

The TPS65150 product line was designed specifically for compact, high-efficiency LCD biasing in portable and automotive displays - integrating multiple power rails, sequencing, protection, and VCOM buffering into one IC to reduce system size and complexity.

FAQ

What is the maximum output current capability of the VCOM buffer in TPS65150PWPG4?

The TPS65150PWPG4 VCOM buffer delivers up to 1.2 A when SUP = 15 V, 0.65 A at SUP = 10 V, and 0.15 A at SUP = 5 V. Load regulation remains within ±110 mV across ±150 mA output swings, ensuring stable common-electrode voltage under dynamic display content. This specification is confirmed in Section 6.5 of the SLVS576B datasheet.

Does TPS65150PWPG4 support adjustable power-on sequencing, and how is it configured?

Yes, TPS65150PWPG4 supports fully adjustable power-on sequencing via DLY1 and DLY2 pins. Connecting capacitors from DLY1 to GND sets the delay between VS and VGL startup; DLY2-to-GND sets the delay between VGL and VGH. Drive currents of 3–7 µA enable precise timing control - for example, a 100-nF capacitor yields ~33 ms delay per stage. This is detailed in Pin Functions (page 5) and Feature Description (Section 7.3.3).

Can TPS65150PWPG4 generate both positive and negative bias voltages required for TFT gate drivers?

Yes, TPS65150PWPG4 integrates two independent regulated charge pumps: a negative pump delivering VGL = −2 V (with 0.016%/mA load regulation) and a positive pump delivering VGH = 30 V (CTRL = GND, VGH open) with 0.07%/mA load regulation. Both use dedicated feedback pins (FBN, FBP) and internal 1.213-V references for high accuracy - confirmed in Electrical Characteristics (Section 6.5).

What protection features does TPS65150PWPG4 include, and how do they operate?

TPS65150PWPG4 includes undervoltage lockout (1.6–1.9 V threshold), overvoltage protection on SUP (16–20 V), thermal shutdown (155°C with 10°C hysteresis), out-of-regulation (OOR) latch, and fault-delay timing via FDLY. When any output falls below its power-good threshold, FDLY initiates a user-defined delay before latching shutdown - requiring VIN cycling to reset. These are specified in Sections 6.1–6.5 and 7.4 of the datasheet.

Is TPS65150PWPG4 compatible with both HTSSOP-24 and VQFN-24 footprints?

No - TPS65150PWPG4 is exclusively offered in the HTSSOP-24 (PWP) package with 7.80 mm × 4.40 mm body size and side-heatsink thermal pad. The VQFN-24 variant is the TPS65150RGER or TPS65151PWPR. While functionally identical, their land patterns, thermal pad layouts, and mechanical dimensions differ; PCB layout must match the specific package variant ordered. This is clarified in the Device Information table (page 2) and Mechanical Information (Section 12).