Texas Instruments TPS65141PWPR

Overview

TPS65141PWPR from Texas Instruments is a triple-output LCD power supply IC integrating a 1.6-MHz boost converter (VO1 up to 15 V / 400 mA), regulated negative charge pump (VO2 down to –12 V / 20 mA), regulated positive charge pump (VO3 up to 30 V / 20 mA), and a 3.3-V linear regulator controller (VO4) - all optimized for TFT LCD source/gate driver biasing in portable displays.

For engineers reviewing the TPS65141PWPR datasheet, TPS65141PWPR pinout, TPS65141PWPR application, or TPS65141PWPR equivalent, key selection criteria include input voltage range (2.7–5.8 V), absence of output fault shutdown (distinguishing it from TPS65140/TPS65145), 24-pin HTSSOP package with PowerPAD™ thermal interface, and system-level power good signaling across three independent rails.

Technical Context

The TPS65141PWPR implements a fixed-frequency (1.6 MHz) voltage-mode boost converter with virtual synchronous operation using an integrated P-MOSFET and external Schottky diode, enabling continuous conduction mode across full load range. Its feedback architecture uses internal 1.213-V reference and 1.146-V regulation threshold at FB1.

It integrates three independent regulation loops: VO1 via PWM boost, VO2 via adjustable negative charge pump with MODE pin configuration (doubler/tripler), and VO3 via fully regulated positive charge pump. The linear regulator controller (VO4) operates independently with dedicated ENR enable and base drive output (BASE) for external NPN transistor.

Key Specifications

Pinout & Package

TPS65141PWPR is housed in a 24-pin HTSSOP (PWP) package with exposed thermal PowerPAD™ (7.80 mm × 4.40 mm), requiring solder connection to PGND for thermal and electrical integrity.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS65140PWPR and TPS65145PWPR, the TPS65141PWPR uniquely maintains all outputs active during individual rail faults - enabling continued VO4 operation and system diagnostics without full power cycle, at the cost of lacking automatic fault containment.

Availability

TPS65141PWPR is available at Aetrix Electronics and suitable for TFT LCD notebooks, automotive infotainment panels, and industrial HMI displays requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.

Supply support for TPS65141PWPR 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 company specializing in analog and embedded processing solutions, with leadership in power management ICs for display, industrial, and automotive markets.

The TPS6514x product line was designed specifically to consolidate multiple LCD bias rails into a single IC for space-constrained portable and automotive displays - reducing bill-of-materials count and improving startup reliability through hardware-based sequencing.

FAQ

What distinguishes TPS65141PWPR from other TPS6514x variants?

The TPS65141PWPR is functionally identical to TPS65140PWPR and TPS65145PWPR in pinout, package, and core functionality, but lacks output fault detection and automatic shutdown. When VO1, VO2, or VO3 falls outside regulation, the TPS65141PWPR continues operating - unlike TPS65140PWPR and TPS65145PWPR which enter shutdown. This makes TPS65141PWPR ideal for systems needing uninterrupted 3.3-V VO4 during transient rail faults.

Does TPS65141PWPR support both voltage doubler and tripler modes for VO3?

Yes, TPS65141PWPR supports both configurations via the C2–/MODE pin. Connecting C2–/MODE to GND configures the positive charge pump as a voltage doubler; connecting it to the flying capacitor (C2–) enables tripler mode. This flexibility allows VO3 scaling from VO1 (e.g., 12 V → 24 V or 36 V) without changing external components - a key advantage for multi-panel display designs.

What external components are mandatory for TPS65141PWPR operation?

TPS65141PWPR requires an external 4.7-µH power inductor on SW, two 0.22-µF flying capacitors (C1 and C2), a 22-µF output capacitor on VO1, and an external NPN transistor (e.g., BCP68) with base resistor network for the VO4 linear regulator. The SUP pin must connect directly to VO1 with no bypass capacitor - a critical layout requirement specified in the TI datasheet to ensure stable charge pump operation.

How does the power good (PG) output behave on TPS65141PWPR during a fault?

On TPS65141PWPR, the PG output goes low immediately if VO1, VO2, or VO3 falls more than 10% from its nominal value - providing real-time system-level rail monitoring. However, unlike TPS65140PWPR and TPS65145PWPR, the TPS65141PWPR does not shut down when PG asserts low. The device remains fully operational, allowing continued VO4 supply and diagnostic access - a deliberate design choice for fault-tolerant display systems.

Can TPS65141PWPR operate from a 3.3-V input supply?

Yes, TPS65141PWPR supports input voltages from 2.7 V to 5.8 V, including 3.3-V rails. At 3.3-V input, VO1 can be configured up to 15 V (4.5× boost ratio), VO2 down to –12 V, and VO3 up to 30 V - all while delivering rated output currents. The 1.6-MHz switching frequency ensures high efficiency and minimal inductor size even at this high boost ratio, validated across –40°C to +85°C ambient.