Texas Instruments TPS65160APWPR

Overview

TPS65160APWPR from Texas Instruments is a highly integrated bias power supply IC for TFT-LCD panels, delivering four regulated rails: VS (up to 17.5 V), VLOGIC (1.8–5.0 V), VGH (+23 V/50 mA), and VGL (−5 V/50 mA). It integrates a 1.5-A step-down converter, a 1.5-A boost converter, and dual charge-pump drivers with adjustable sequencing-designed specifically for LCD TV and monitor applications requiring precise voltage timing and high current capability.

For engineers reviewing the TPS65160APWPR datasheet, TPS65160APWPR pinout, TPS65160APWPR application, or TPS65160APWPR equivalent, this device supports critical design tasks including TFT gate driver biasing, multi-rail sequencing control, overvoltage-protected boost regulation, and thermal-safe operation in space-constrained HTSSOP-28 layouts.

Technical Context

The TPS65160APWPR implements a fixed-frequency (500 kHz/750 kHz selectable via FREQ pin) voltage-mode PWM architecture for both its main boost and step-down converters, with input voltage feedforward for <0.04%/A load regulation. Its dual charge-pump drivers use internal current-sink/source switches (rDS(on) = 4.4 Ω for VGL, 1.1 Ω for VGH) and external flying capacitors to generate tightly regulated ±23 V rails.

Sequencing is controlled by EN1/EN2 enables and DLY1/DLY2 timing capacitors, allowing independent startup delays between VLOGIC → VGL and VLOGIC → VS/VGH. The device includes dedicated protection features: 19.5-V boost overvoltage lockout, cycle-by-cycle current limiting (2.6-A buck, 2.8-A boost), thermal shutdown at 155°C, and soft-start via SS pin with programmable ramp time.

Key Specifications

Pinout & Package

TPS65160APWPR is housed in a thermally enhanced 28-pin HTSSOP (PWP) package with exposed PowerPAD connected to PGND. The package measures 9.7 mm × 4.4 mm × 1.2 mm and supports reflow soldering per JEDEC J-STD-020.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS65160APWPR, TPS65160APWPR offers full 4-rail integration and sequencing in one package, while TPS65161APWPR extends functionality with an LDO and RTQ2132B-QA trades integration for automotive robustness - making TPS65160APWPR optimal for cost-sensitive, space-constrained consumer LCD TV and monitor designs.

Availability

TPS65160APWPR is available at Aetrix Electronics and suitable for LCD TV manufacturing, monitor panel assembly, and industrial HMI display production requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for TPS65160APWPR 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 and embedded processing technologies, with decades of expertise in power management ICs for display and industrial applications.

The TPS65160 product line was designed specifically to consolidate bias power for large-format TFT-LCD panels - reducing system complexity while meeting stringent timing, accuracy, and reliability requirements of modern display electronics.

FAQ

What is the maximum allowable input voltage for TPS65160APWPR?

The TPS65160APWPR supports an input voltage range of 9.2 V to 14 V, with undervoltage lockout (UVLO) releasing at 8.8 V (typical) and re-engaging at 8.0 V. Exceeding 14 V violates absolute maximum ratings and may cause permanent damage to the VINB and AVIN pins. Always verify input rail stability and transient suppression in final designs using TPS65160APWPR.

How does the FREQ pin affect switching behavior in TPS65160APWPR?

The FREQ pin on TPS65160APWPR selects between two fixed switching frequencies: 500 kHz (logic low) or 750 kHz (logic high). This setting applies uniformly to the boost converter, step-down converter, and both charge-pump drivers. Higher frequency allows smaller inductors and capacitors but increases switching losses - design trade-offs must be validated using TPS65160APWPR's efficiency curves.

Can TPS65160APWPR generate VGH above 15 V when SUP is connected to VS?

No - the SUP pin of TPS65160APWPR has an absolute maximum rating of 15 V. When VS exceeds 15 V (e.g., 17.5 V), SUP must be connected to VIN (12 V) instead of VS to prevent overstress. This configuration limits VGH to ≤27 V (VIN + VS), which remains sufficient for most TFT panels. Always observe this constraint in TPS65160APWPR layouts.

What is the purpose of the GD pin on TPS65160APWPR?

The GD (gate drive) pin on TPS65160APWPR is an open-drain output that goes low when the VS rail reaches regulation (within 8% of target) and stays latched until EN2 is cycled. It drives external MOSFETs to provide input-output isolation for VS or VGH rails - enabling safe hot-swap capability and fault containment in TPS65160APWPR-based systems.

How is power-on sequencing configured for TPS65160APWPR?

TPS65160APWPR uses EN1 and EN2 enables plus DLY1/DLY2 timing capacitors to configure sequencing: EN1 activates VLOGIC and VGL after DLY1 delay; EN2 activates VS and VGH after DLY2 delay. Capacitor values determine delay times - e.g., 10 nF on DLY1 yields ~2.3 ms delay. All timing is internally referenced to the 1.213-V bandgap, ensuring stability across temperature in TPS65160APWPR operation.