Texas Instruments TPS54292PWP

Overview

TPS54292PWP from Texas Instruments is a dual-channel, fully synchronous buck converter IC with integrated 1.5-A and 2.5-A MOSFETs, operating from 4.5 V to 18 V input and delivering regulated outputs down to 0.8 V. It features 1.2-MHz fixed switching frequency, 180° out-of-phase PWM operation, and dedicated enable pins per channel-designed for compact, high-efficiency power supplies in digital TVs and set-top boxes.

For engineers reviewing the TPS54292PWP datasheet, TPS54292PWP pinout, TPS54292PWP application, or TPS54292PWP equivalent, key selection considerations include its dual-channel current capability (1.5 A / 2.5 A), 1.2-MHz switching frequency, external compensation architecture, thermal shutdown at 145°C, and HTSSOP-16 PowerPAD™ package with separated power/ground domains.

Technical Context

The TPS54292PWP implements current-mode control with dual independent transconductance error amplifiers (325 µS typical), external R-C compensation on COMP1/COMP2, and internal slope compensation synchronized to a 2.4-MHz oscillator divided by 2. Its 180° out-of-phase operation reduces input ripple current and EMI while enabling smaller input capacitance.

Each channel integrates high-side and low-side MOSFETs with confirmed R_DS(on) values: CH1 HS = 265 mΩ max, LS = 190 mΩ max; CH2 HS = 190 mΩ max, LS = 150 mΩ max. UVLO monitors PVDD2 (4.1 V turn-on, 460 mV hysteresis), and soft start is fixed at 1.3 ms for both channels.

Key Specifications

Pinout & Package

TPS54292PWP uses a 16-pin HTSSOP (PWP) package with 5.00 mm × 4.40 mm body size and an exposed thermal pad that must be soldered to a PCB ground plane for thermal performance and electrical stability.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-output synchronous buck converter applications.

Compared with TPS54291PWP and TPS54283PWP, the TPS54292PWP delivers highest power density via 1.2-MHz operation and full integration, but requires tighter layout attention for EMI; TPS54291PWP trades frequency for thermal margin, while TPS54283PWP sacrifices efficiency and phase control for lowest component count.

Availability

TPS54292PWP is available at Aetrix Electronics and suitable for digital TV, set-top box, and DSP board designs requiring stable component supply, consistent parametric performance across production lots, and long-term lifecycle support.

Supply support for TPS54292PWP 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 IC design and manufacturing.

The TPS5429x family was engineered for space-constrained, high-efficiency dual-rail applications in consumer electronics-emphasizing integration, thermal robustness, and simplified system-level power design.

FAQ

What is the maximum supported output voltage for TPS54292PWP?

The TPS54292PWP supports output voltages from 0.8 V up to 90% of the input voltage (DMAX × VIN), with DMAX = 78%–82% depending on temperature and conditions. For example, with 12 V input, maximum regulated output is approximately 9.4 V. The 0.8 V internal reference and external resistor divider determine the exact value, and the device does not regulate above DMAX × VIN regardless of feedback configuration.

Does TPS54292PWP require external bootstrap diodes?

No, the TPS54292PWP integrates bootstrap switches and a dedicated 5.2-V BP regulator, eliminating the need for external bootstrap diodes. Each BOOT pin (BOOT1/BOOT2) connects only to its respective SW pin via a 22–68 nF capacitor; no diode or external charge pump is required. This integration improves reliability and reduces component count in the final design.

How does the 180° out-of-phase operation benefit system design?

The 180° out-of-phase PWM operation in the TPS54292PWP reduces peak-to-peak and RMS input capacitor ripple current by up to 30% compared to in-phase operation. This allows designers to use smaller, lower-cost input capacitors and achieve lower EMI emissions-critical for meeting FCC/CE compliance in consumer audio/video products without adding shielding or complex filters.

Can TPS54292PWP operate with only one channel enabled?

Yes, the TPS54292PWP supports independent channel operation: EN1 controls CH1 and EN2 controls CH2. Either channel can be disabled (by pulling ENx >1.5 V) while the other remains active. When one channel is disabled, its high- and low-side FETs turn off, and the output decays through the load and output capacitor-no cross-regulation or instability occurs between channels.

What thermal derating applies to TPS54292PWP in a standard 2-layer PCB layout?

In a standard 2-layer PCB with 1 oz copper and minimal thermal vias to inner ground planes, the TPS54292PWP's junction-to-ambient thermal resistance (R_θJA) rises to ~55°C/W-versus the datasheet's 39.2°C/W measured on a high-copper test board. At 12 V input and full 2.5-A CH2 load, this implies ~35°C junction rise above ambient, requiring ambient limits below 90°C for safe 125°C max junction operation.