Texas Instruments TPS62916RPYR

Overview

TPS62916RPYR from Texas Instruments is a 3V–17V input, 6A synchronous buck converter with integrated ferrite-bead filter compensation, 2.2/1.4/1.0 MHz fixed-frequency peak-current-mode control, <10 µVRMS output ripple after ferrite bead, and ±1% output voltage accuracy over –40°C to 150°C junction temperature - deployed in high-speed ADC power rails and radar signal chains.

For engineers reviewing the TPS62916RPYR datasheet, TPS62916RPYR pinout, TPS62916RPYR application, or TPS62916RPYR equivalent, this page delivers verified specifications, validated pin functions, confirmed noise-performance data (24.4 µVRMS @1MHz, 12V→1.2V), thermal metrics (RθJA = 58.9°C/W), and two rigorously cross-checked alternative parts for low-noise DC/DC replacement scenarios.

Technical Context

The TPS62916RPYR implements fixed-frequency peak-current-mode control with selectable 2.2 MHz / 1.4 MHz / 1.0 MHz switching, synchronized via EN/SYNC pin with ±10% spread-spectrum modulation capability. Its internal loop compensation supports stability with up to 50 nH external ferrite-bead inductance in a second-stage L-C filter.

It regulates post-filter output voltage using VO sense pin placement directly after the first inductor, enabling <10 µVRMS ripple suppression. The NR/SS pin simultaneously sets soft-start time and filters the internal reference to achieve <20 µVRMS (100 Hz–100 kHz) low-frequency noise - matching LDO-grade spectral purity while delivering 6A continuous current.

Key Specifications

Pinout & Package

TPS62916RPYR uses a 14-pin VQFN-HR (RPY) package, 2.5 mm × 3.0 mm, 0.5 mm pitch, with exposed thermal pad for enhanced heat dissipation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar low-noise buck converter applications.

Compared with TPS62914RPYR and TPS62918RPYR, the TPS62916RPYR delivers optimal balance of current headroom (6A), thermal performance (58.9°C/W), and footprint efficiency (2.5×3.0 mm) for mid-range noise-sensitive applications - avoiding overdesign or under-specification.

Availability

TPS62916RPYR is available at Aetrix Electronics and suitable for telecom infrastructure, aerospace radar, and medical imaging systems requiring stable component supply, long-lifecycle support, and guaranteed traceability for Class III reliability requirements.

Supply support for TPS62916RPYR 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, embedded processing, and power management technologies, with decades of heritage in high-reliability power conversion ICs.

The TPS6291x product line was engineered specifically for noise-critical signal-chain applications - replacing cascaded buck-LDO architectures with single-stage, ferrite-bead-optimized converters that maintain LDO-level spectral purity at high current.

FAQ

What is the maximum supported ferrite-bead inductance for TPS62916RPYR?

The TPS62916RPYR's integrated loop compensation supports external ferrite-bead inductance up to 50 nH while maintaining stability - verified per datasheet Section 5.3 and Figure 5-3 through 5-12. This enables effective second-stage ripple attenuation without external compensation components. The VO pin must be connected directly after the ferrite bead to preserve regulation accuracy. TPS62916RPYR achieves <10 µVRMS output ripple under these conditions.

Does TPS62916RPYR require an external capacitor on the NR/SS pin?

Yes - a capacitor on the NR/SS pin is mandatory for both soft-start timing and low-frequency noise reduction. A 470 nF capacitor yields ~5 ms soft-start and 24.4 µVRMS noise (100 Hz–100 kHz) at 12V→1.2V; larger values further reduce noise but increase startup time. Leaving NR/SS open results in 144–159 µVRMS noise - unacceptable for ADC or clock applications. TPS62916RPYR's noise performance is directly tied to this capacitor selection.

Can TPS62916RPYR be synchronized to an external clock?

Yes - the EN/SYNC pin accepts an external clock signal (1.9–2.42 MHz for 2.2 MHz mode, 1.2–1.6 MHz for 1.4 MHz, or 0.9–1.2 MHz for 1.0 MHz) to synchronize switching. The device reads S-CONF configuration upon clock application and locks to the input frequency within one cycle. Clock edges must meet VIH/VIL thresholds (1.1 V / 0.4 V) and slew rate specs. TPS62916RPYR maintains synchronization even during load transients, ensuring deterministic EMI placement.

What is the purpose of the VO pin on TPS62916RPYR?

The VO pin on TPS62916RPYR senses output voltage *after* the ferrite-bead filter - enabling regulation at the final load point rather than at the converter output. This compensates for voltage drop across the bead and ensures <10 µVRMS ripple reaches the load. It must be routed with minimal trace length and no vias, directly connecting to the load-side of the ferrite bead. Misrouting VO to the converter-side degrades ripple suppression and violates TPS62916RPYR's core low-noise design intent.

How does spread spectrum modulation work in TPS62916RPYR?

TPS62916RPYR implements random spread spectrum modulation (SSM) via its S-CONF pin - using a Fibonacci Linear-Feedback Shift Register (LFSR) to dither switching frequency ±10% around the base frequency (e.g., 2.2 MHz ±220 kHz). This spreads EMI energy across a wider band, reducing peak emissions by up to 10 dB. Unlike triangular dither, random SSM avoids harmonic recombination and is especially effective against FFT-based spurs in ADC applications. TPS62916RPYR's SSM is fully integrated and requires no external components.