Texas Instruments TPS65101PWPR

Overview

TPS65101PWPR from Texas Instruments is a triple-output LCD power supply IC integrating a 1.6-MHz boost converter (VO1 up to 15 V / 350 mA), a regulated negative charge pump (VO2 down to –12 V / 20 mA), a positive charge pump (VO3 up to 30 V / 20 mA), an integrated VCOM buffer, and a 3.3-V linear regulator controller - all in a single HTSSOP-24 package for TFT LCD panel biasing.

For engineers reviewing the TPS65101PWPR datasheet, TPS65101PWPR pinout, TPS65101PWPR application, or TPS65101PWPR equivalent, this device delivers tightly regulated, sequenced, and fault-aware voltage rails essential for notebook, monitor, and industrial display power architectures - with confirmed soft-start, internal power-on sequencing, and thermal shutdown.

Technical Context

The TPS65101PWPR implements a fixed-frequency (1.6 MHz) PWM boost converter using Virtual Synchronous Converter Technology - combining an external Schottky diode and internal P-MOSFET (rDS(on) = 9–22 Ω) to maintain continuous conduction mode across load range. Its SUP pin supplies VO1-derived voltage to both charge pumps and the VCOM buffer, enabling compact, capacitor-intensive LCD biasing.

It features independent enable control (EN for main rails, ENR for linear regulator), internal soft-start with three-step current-limit ramp (2048 cycles per step), and no output fault detection - distinguishing it from TPS65100/TPS65105. The VCOM buffer accepts VCOMIN input (2.25 V to VO1–2 V) and delivers ±150 mA peak output at 15 V VO1.

Key Specifications

Pinout & Package

TPS65101PWPR is housed in a 24-pin HTSSOP (PWP) package with PowerPAD™ thermal pad (7.80 mm × 4.40 mm body size), requiring PGND-connected thermal land for reliable 125°C junction operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS65100PWPR, TPS65101PWPR trades fault protection for simpler system-level reset handling; compared with TPS65105RGER, it offers higher VO1 current capability and HTSSOP packaging for easier thermal management and rework.

Availability

TPS65101PWPR is available at Aetrix Electronics and suitable for notebook LCD power, industrial display bias, car navigation systems, and tablet PC panel supply requiring stable component supply and long-lifecycle support.

Supply support for TPS65101PWPR 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 delivering analog, embedded processing, and connectivity technologies with focus on reliability, efficiency, and design simplicity.

The TPS6510x product line was engineered specifically for TFT LCD panel power management - integrating multiple bias rails, sequencing, and thermal resilience into one IC for space- and cost-sensitive display applications.

FAQ

What is the key functional difference between TPS65101PWPR and TPS65100PWPR?

The TPS65101PWPR lacks output fault detection - if VO1, VO2, or VO3 falls out of regulation, the device continues operating. In contrast, TPS65100PWPR enters full shutdown upon any rail fault. This makes TPS65101PWPR appropriate for applications where uninterrupted biasing is prioritized over automatic fault isolation. Both share identical pinout, package, and core regulation specs.

Does TPS65101PWPR support tripler-mode operation for VO3, and how is it configured?

Yes, TPS65101PWPR supports tripler-mode VO3 (≈3×VO1) by connecting the flying capacitor between C2+ and C2-/MODE pins. For doubler-mode (≈2×VO1), C2-/MODE is tied to GND and the flying capacitor connects between C1+ and C1−. Mode selection is hardware-configured - no register programming required. Tripler mode is confirmed in datasheet Figure 13 and Section 8.3.4.

What external components are mandatory for basic TPS65101PWPR operation?

Mandatory components include: one 4.7-µH power inductor (L), one Schottky diode (D1), two 220-nF flying capacitors (C1, C2), one 10-µF output capacitor on VO1, and feedback resistors for VO1/VO2/VO3 regulation. The VCOM buffer requires no external parts unless driving >100 mA; the 3.3-V linear regulator needs an external NPN/PNP transistor and base resistor.

Can the VCOM buffer in TPS65101PWPR be disabled to reduce quiescent current?

Yes - tying VCOMIN to GND disables the VCOM buffer and reduces total quiescent current by ~750 µA (per II(QVCOM) spec). When disabled, the VCOM pin may be left unconnected. This is explicitly supported per datasheet Section 8.3.2 and Pin Functions table, and does not affect VO1/VO2/VO3 operation.

What is the maximum allowable junction temperature and thermal resistance for TPS65101PWPR in HTSSOP package?

The absolute maximum junction temperature is 150°C, with recommended operating TJ ≤125°C. For the PWP (HTSSOP-24) package, RθJA is 37.2°C/W (JEDEC JESD51-2 standard), and RθJC(bot) is 2.1°C/W - confirming the exposed PowerPAD™ must be soldered to a large PGND copper area for effective heat transfer. Thermal derating begins above 70°C ambient.