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Texas Instruments TPS62916RPYR-ET
- Part No.:
- TPS62916RPYR-ET
- Manufacturer:
- Texas Instruments
- Package:
- 14-PowerVFQFN
- Datasheet:
-
TPS62916RPYR-ET.pdf
- Description:
- IC REG BUCK ADJ 6A 14VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,246
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Product details
Overview
TPS62916RPYR-ET from Texas Instruments is a 3V–17V input, 6A synchronous buck converter with integrated ferrite-bead filter compensation, delivering <10µVRMS output ripple after second-stage filtering and <20µVRMS low-frequency noise (100Hz–100kHz). It features fixed 2.2/1.4/1.0MHz peak-current-mode control, ±1% output voltage accuracy, and operates across –55°C to 150°C junction temperature - designed for powering high-speed ADCs, clock jitter cleaners, and radar signal chains in avionics and medical systems.
For engineers reviewing the TPS62916RPYR-ET datasheet, TPS62916RPYR-ET pinout, TPS62916RPYR-ET application, or TPS62916RPYR-ET equivalent, key selection criteria include verified low-noise performance (<20µVRMS), ferrite-bead-compatible loop compensation, precise enable threshold (1.01V typ), spread-spectrum modulation support, and QFN-HR 14-pin (2.5mm × 3.0mm) package thermal metrics (RθJA = 58.9°C/W).
Technical Context
The TPS62916RPYR-ET implements fixed-frequency peak-current-mode control with selectable 2.2/1.4/1.0MHz switching and external synchronization capability. Its internal loop compensation supports stable operation with up to 50nH ferrite-bead inductance in a second-stage L-C filter, enabling >30dB attenuation of switching artifacts.
Low-noise operation is achieved via filtered internal reference (NR/SS pin capacitor), 25mΩ/7mΩ RDS(on) FETs, and optional random spread-spectrum modulation (±10% fSW). Power-good (PG) provides open-drain sequencing feedback, while S-CONF resistor programming configures frequency, spread spectrum, output discharge, and sync range without I²C or digital interface.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.0V to 17V - supports wide industrial and avionics supply rails including 5V, 12V, and 15V nominal systems. |
| Output Current | 6A continuous - delivers full rated current with thermal derating above 125°C junction temperature. |
| Output Ripple (after ferrite bead) | <10µVRMS - enables direct powering of noise-sensitive analog circuits without post-LDO regulation. |
| Low-Frequency Noise | <20µVRMS (100Hz–100kHz) - matches LDO-grade noise floor when NR/SS = 470nF. |
| PSRR | >65dB up to 100kHz - suppresses input supply noise before it couples into sensitive loads like ADC references. |
| Switching Frequency Options | 2.2MHz / 1.4MHz / 1.0MHz - selectable via S-CONF resistor; higher frequencies allow smaller magnetics and faster transient response. |
| Junction Temperature Range | –55°C to +150°C - qualified for ruggedized communication, smart munitions, and medical equipment operating in extreme environments. |
Pinout & Package
TPS62916RPYR-ET is housed in a 2.5mm × 3.0mm, 0.5mm-pitch, 14-pin VQFN-HR (RPY) package with exposed thermal pad. The package supports high-power density layouts and achieves RθJA = 58.9°C/W on JEDEC 51-7 PCB.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 PSNS | Power sense ground | Direct connection point to GND plane for accurate current sensing; must be routed with low-inductance path. |
| 2 NR/SS | Noise reduction / soft-start | Capacitor here sets soft-start time (0.7–35ms) and reduces low-frequency noise; 470nF yields ~5ms start-up and 29.7µVRMS noise. |
| 3 FB | Feedback input | Monitors regulated output voltage after second-stage ferrite-bead filter; enables post-filter regulation for ripple rejection. |
| 4 VO | Output voltage sense | Connects directly to output node before first-stage inductor; used for current sensing and loop stability. |
| 5 PG | Power-good open-drain | Signals valid regulation (95% VFB) with 8µs deglitch; requires external pull-up for rail sequencing. |
| 6 S-CONF | Smart configuration | Resistor-programmed pin selecting switching frequency, spread spectrum, output discharge, and sync range - no firmware required. |
| 7 EN/SYNC | Enable / synchronization input | 1.01V typical enable threshold; accepts external clock (1.9–2.42MHz for 2.2MHz mode) for EMI reduction and system timing alignment. |
| 8,12 VIN | Input power supply | Dual pins reduce IR drop and improve thermal distribution; each rated for 18V absolute max. |
| 9,11 PGND | Power ground | Separate low-impedance return path for high-current switch node; must connect to thermal pad and main GND plane. |
| 10,13 SW | Switch node outputs | Two dedicated SW pins drive external inductor; minimize trace length and loop area to reduce EMI and switching losses. |
| 14 BOOT | High-side gate driver supply | Requires 0.1µF ceramic capacitor to SW; critical for proper high-side FET turn-on and efficiency at high duty cycles. |
Key Features
| Feature | Design Value |
|---|---|
| Ferrite-bead filter compensation | Integrated loop compensation supports up to 50nH ferrite-bead inductance with stable phase margin - eliminates need for external compensation networks. |
| Low-noise reference filtering | NR/SS pin accepts capacitor to filter internal reference; 470nF reduces 100Hz–100kHz noise to 29.7µVRMS - matches ultra-low-noise LDO performance. |
| Spread-spectrum modulation | Random ±10% frequency dithering (via S-CONF) lowers peak EMI by spreading energy across bandwidth - critical for ADC/AFE applications avoiding mixing spurs. |
| Precision enable threshold | 1.01V typical EN/SYNC rising threshold with 500kΩ internal pulldown - enables reliable undervoltage lockout and exact power-rail sequencing. |
| Post-filter regulation | Regulates at FB pin located after second-stage ferrite-bead filter - maintains tight output accuracy despite filter insertion loss and component tolerances. |
Applications
| Avionics Power Distribution | Medical Imaging Signal Chain |
|---|---|
Use Scenario: Supplying 1.2V/6A to high-resolution SAR ADCs and clock jitter cleaners in airborne radar front-ends. IC Role / Device Role / Timing Role: Primary DC/DC regulator providing ultra-low-noise, low-ripple bias for analog signal acquisition and timing recovery. Use Value: Eliminates need for post-regulation LDOs, reducing board space and thermal load while maintaining <20µVRMS noise floor essential for ≥16-bit ENOB performance. |
Use Scenario: Generating clean 3.3V/6A for ultrasound beamformer ASICs and MRI gradient controller FPGAs. IC Role / Device Role / Timing Role: High-current, low-EMI power stage delivering stable voltage to mixed-signal SoCs with strict spectral purity requirements. Use Value: Ferrite-bead filtering and spread-spectrum modulation suppress switching artifacts below –80dBc, preventing image ghosting and SNR degradation in real-time imaging. |
| Ruggedized Tactical Radios | Smart Munitions Guidance |
Use Scenario: Powering RF transceivers and baseband processors in MIL-STD-810G field-deployable radios operating from 28V vehicle batteries. IC Role / Device Role / Timing Role: Wide-input buck converter with robust UVLO (2.92V) and thermal shutdown (170°C) ensuring reliability under voltage transients and high ambient temperatures. Use Value: 3V–17V input range accommodates brownouts and surges; –55°C to +150°C rating sustains operation in desert or arctic environments without derating. |
Use Scenario: Providing 1.8V/6A to inertial measurement unit (IMU) sensors and guidance microcontrollers inside guided munitions subject to high-G launch shock. IC Role / Device Role / Timing Role: Shock-tolerant, high-reliability power IC with integrated output discharge and precise sequencing for safe startup/shutdown during rapid acceleration events. Use Value: Output discharge (RDIS ≈ 7Ω) prevents back-powering during spin-up; S-CONF programmability enables single-BOM flexibility across multiple guidance subsystem variants. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62913RPYR | Lower 3A output current; identical noise specs (<20µVRMS), same RPY package and pinout. | Suitable for lower-power ADCs, clock buffers, or FPGA I/O banks where 6A headroom is unnecessary. | Select when system load is ≤3A and board layout reuse is prioritized - pin-to-pin compatible with shared BOM strategy. |
| LTC3310SDE#PBF | 4A output, 2.25V–5.5V input, 2.2MHz fixed frequency; uses Silent Switcher 2 architecture for lower EMI, but lacks ferrite-bead compensation. | Better suited for space-constrained, low-voltage applications (e.g., battery-powered portable diagnostics) where input range is narrow. | Choose when EMI shielding is impractical and sub-5V input dominates; verify second-stage filter stability separately as LTC3310S lacks integrated ferrite-bead loop tuning. |
Compared with TPS62916RPYR-ET, TPS62913RPYR offers identical noise performance at half the current for cost-optimized designs, while LTC3310SDE#PBF provides superior EMI suppression in compact low-voltage systems but requires external loop compensation for ferrite-bead filters - making TPS62916RPYR-ET the only solution with factory-tuned, production-ready ferrite-bead integration.
Availability
TPS62916RPYR-ET is available at Aetrix Electronics and suitable for avionics power distribution, medical imaging signal chains, and ruggedized tactical radio designs requiring stable component supply, extended temperature qualification, and long-term obsolescence management.
Supply support for TPS62916RPYR-ET 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 over 50 years of innovation in high-reliability power conversion.
The TPS62916RPYR-ET belongs to TI's low-noise buck converter family, engineered specifically for noise-sensitive signal-chain applications - replacing LDOs in high-current, high-precision systems while maintaining ultra-low ripple and spectral purity.
FAQ
What is the maximum supported ferrite-bead inductance for stable operation of the TPS62916RPYR-ET?
The TPS62916RPYR-ET supports stable operation with up to 50nH ferrite-bead inductance in the second-stage L-C filter, as confirmed in Section 5.3 Recommended Operating Conditions and Section 6.3.1. This value is validated across all three switching frequencies (1.0/1.4/2.2MHz) and ensures >30dB attenuation without external compensation components. Exceeding 50nH may compromise phase margin and cause output instability.
Does the TPS62916RPYR-ET require an external capacitor on the NR/SS pin for basic operation?
Yes, the TPS62916RPYR-ET requires an external capacitor on the NR/SS pin for both soft-start control and low-frequency noise reduction. A minimum 470nF capacitor is recommended to achieve ~5ms soft-start and 29.7µVRMS noise (100Hz–100kHz); omitting it results in fastest start-up (~0.7ms) but higher low-frequency noise (~154µVRMS). The device will operate without it, but noise-sensitive applications demand this capacitor.
Can the TPS62916RPYR-ET synchronize to an external clock while maintaining spread-spectrum modulation?
No - spread-spectrum modulation and external synchronization are mutually exclusive modes on the TPS62916RPYR-ET. As defined in Table 6-1, S-CONF resistor values configure either "SYNC" (external clock input) or "SPREAD SPECTRUM" (random dithering), but not both simultaneously. When EN/SYNC receives a clock signal, the device disables internal spread-spectrum and locks to the external frequency within the specified sync range (e.g., 1.9–2.42MHz for 2.2MHz mode).
What is the purpose of the dual SW pins (pins 10 and 13) on the TPS62916RPYR-ET?
The dual SW pins (10 and 13) on the TPS62916RPYR-ET provide parallel high-current switching paths to reduce conduction losses and improve thermal dissipation. Each SW pin connects to one end of the external output inductor, distributing peak switch current (up to 9.6A) across two low-inductance routes. This design minimizes PCB trace resistance, lowers EMI radiation, and enhances reliability under sustained 6A loads - especially critical in high-temperature avionics and medical environments.
How does the TPS62916RPYR-ET achieve post-filter regulation, and why is it important?
The TPS62916RPYR-ET achieves post-filter regulation by placing the FB (feedback) pin connection point *after* the second-stage ferrite-bead L-C filter, while routing the VO (output sense) pin *before* it. This allows the internal error amplifier to regulate the final filtered output voltage - compensating for insertion loss, component tolerance, and load-dependent droop across the filter. It ensures ±1% output accuracy is maintained at the load, not just at the converter output, which is essential for precision analog systems.
TPS62916RPYR-ET Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-PowerVFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3V
- Voltage - Input (Max):
- 17V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 6A
- Frequency - Switching:
- 1MHz, 1.4MHz, 2.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-VQFN-HR (2.5x3)
TPS62916RPYR-ET FAQ
1.How can I place an order for TPS62916RPYR-ET through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62916RPYR-ET on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TPS62916RPYR-ET reliable?
The price and inventory of TPS62916RPYR-ET are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62916RPYR-ET is usually 5 days.
3.What payment methods are accepted for TPS62916RPYR-ET?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62916RPYR-ET transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62916RPYR-ET?
TPS62916RPYR-ET orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62916RPYR-ET order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TPS62916RPYR-ET?
For technical support, including TPS62916RPYR-ET datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62916RPYR-ET requirements.
6.How does Aetrix verify that TPS62916RPYR-ET is sourced from the original manufacturer or authorized distributors?
All TPS62916RPYR-ET products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TPS62916RPYR-ET meets industry standards.
7.What is the process for return or replacement of TPS62916RPYR-ET?
All TPS62916RPYR-ET units undergo pre-shipment inspection (PSI). If there is an issue with TPS62916RPYR-ET, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TPS62916RPYR-ET part is unused and in its original packaging.
Return procedure for TPS62916RPYR-ET:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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