Texas Instruments TPS65141RGER

Overview

TPS65141RGER 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), a regulated negative charge pump (VO2 down to –12 V / 20 mA), a positive charge pump (VO3 up to 30 V / 20 mA), and a 3.3-V linear regulator controller - all in a single 24-pin VQFN package. It delivers gate and source drive voltages for TFT LCD panels in portable displays.

For engineers reviewing the TPS65141RGER datasheet, TPS65141RGER pinout, TPS65141RGER application, or TPS65141RGER equivalent, key selection considerations include its absence of output fault shutdown (unlike TPS65140/TPS65145), 2.7–5.8 V input range, integrated soft-start sequencing, and system-level power-good monitoring across all three outputs.

Technical Context

The TPS65141RGER implements a fixed-frequency (1.6 MHz) voltage-mode boost converter with virtual synchronous operation using an external Schottky diode and internal P-MOSFET Q2 (r_DS(on) = 9–22 Ω), enabling continuous conduction mode across load range. Its SUP pin feeds both charge pumps directly from VO1, eliminating intermediate regulation.

It features independent enable control (EN for main rails, ENR for 3.3-V LDO controller), programmable charge pump topology (doubler/tripler via C2–/MODE pin), and open-drain PG output asserting high only when VO1, VO2, and VO3 are simultaneously within ±10% of nominal - but unlike TPS65140/TPS65145, it does not shut down on output fault.

Key Specifications

Pinout & Package

TPS65141RGER is housed in a 4.0 mm × 4.0 mm, 24-pin VQFN PowerPAD™ package with exposed thermal die connected to PGND. The package supports high-power dissipation (R_θJA = 34.2°C/W) and requires soldering the thermal pad to PCB ground plane for thermal integrity.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS65141RGER, TPS65140RGER adds critical fault shutdown for safety-critical systems, while TPS65145RGER trades peak current capacity for smaller magnetics and lower BOM cost - neither offers the TPS65141RGER's unique non-shutdown fault tolerance.

Availability

TPS65141RGER is available at Aetrix Electronics and suitable for TFT LCD notebooks, portable DVD players, automotive infotainment displays, and industrial HMI panels requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TPS65141RGER 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 designing analog and embedded processing chips for industrial, automotive, and consumer applications, with over 50 years of power management leadership.

The TPS6514x product line was engineered specifically for TFT LCD bias supply integration - consolidating boost, dual charge pumps, and LDO control into one IC to replace multi-chip solutions in space-constrained portable displays.

FAQ

What is the key functional difference between TPS65141RGER and TPS65140RGER?

The TPS65141RGER does not enter shutdown when any output (VO1, VO2, or VO3) falls outside its power-good threshold, whereas the TPS65140RGER immediately shuts down on such faults. This makes TPS65141RGER suitable for applications requiring continued operation despite partial rail degradation - a design choice confirmed in TI's SLVS497F datasheet Section 7.3.8.

Does TPS65141RGER support voltage tripler mode for VO3, and how is it configured?

Yes, TPS65141RGER supports voltage tripler mode for VO3. It is configured by connecting the flying capacitor between C2+ and C2–/MODE pins (Pin 17 and Pin 18). When left unconnected, C2–/MODE must be tied to GND to select doubler mode - a hardware-selectable feature documented in the Pin Functions table of the datasheet.

What is the maximum output current capability of the VO4 3.3-V linear regulator controller in TPS65141RGER?

The TPS65141RGER's VO4 linear regulator controller supports up to 500 mA output current when paired with an appropriately rated external transistor (e.g., BCP68), as verified in Electrical Characteristics Table 6.5 under "LINEAR REGULATOR CONTROLLER VO4" with I_O = 500 mA specified at V_I = 4.5–5.5 V and T_A = –40°C to 85°C.

Can TPS65141RGER operate with a 2.7-V input, and what is the minimum VO1 output under that condition?

Yes, TPS65141RGER operates down to 2.7 V input (VI min per Recommended Operating Conditions). Under this condition, VO1 minimum output is constrained by the 1-V minimum input-to-output voltage difference (VO1 – VIN ≥ 1 V), so VO1 can be set as low as 3.7 V - confirmed in Electrical Characteristics Table 6.5 "MAIN BOOST CONVERTER" section.

How does the soft-start behavior of TPS65141RGER differ from TPS65140RGER?

TPS65141RGER uses an extended soft-start sequence: each of the three current-limit ramp steps lasts 2048 clock cycles (vs. 1024 in TPS65140RGER), resulting in longer overall startup time. This is explicitly stated in Section 7.3.7 of the datasheet and helps reduce inrush current in high-capacitance display panels.