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Texas Instruments TPS62914RPYR
- Part No.:
- TPS62914RPYR
- Manufacturer:
- Texas Instruments
- Package:
- 14-PowerVFQFN
- Datasheet:
-
TPS62914RPYR.pdf
- Description:
- IC REG BUCK ADJ 4.5A 14VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,521
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Product details
Overview
TPS62914RPYR from Texas Instruments is a 4.5A, low-noise synchronous buck converter with integrated ferrite-bead filter compensation, operating from 3V to 17V input and delivering 0.8V–5.5V output. It achieves <10µVRMS output ripple after ferrite-bead filtering, >65dB PSRR up to 100kHz, and 2.2/1.4/1.0MHz fixed-frequency peak-current-mode control - designed for powering high-speed ADCs, clock jitter cleaners, and radar signal chains.
For engineers reviewing the TPS62914RPYR datasheet, TPS62914RPYR pinout, TPS62914RPYR application, or TPS62914RPYR equivalent, key selection criteria include its verified 4.5A output current rating, 2.5mm × 3.0mm VQFN-HR (RPY) package with 0.5mm pitch, ±1% output voltage accuracy over –40°C to 150°C junction temperature, and support for external synchronization and spread-spectrum modulation.
Technical Context
The TPS62914RPYR implements fixed-frequency peak-current-mode control with selectable 2.2MHz/1.4MHz/1.0MHz operation and optional external clock synchronization. Its internal loop compensation is explicitly validated for stability with second-stage ferrite-bead L-C filters up to 50nH inductance and 160µF capacitance.
Low-frequency noise is suppressed via NR/SS pin capacitor filtering of the internal reference, achieving <20µVRMS (100Hz–100kHz); output ripple is reduced to <10µVRMS after ferrite-bead filtering. Spread-spectrum modulation (±10% frequency dither) is configurable via S-CONF resistor and lowers mixing spurs in ADC/AFE applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 4.5A continuous - supports high-current noise-sensitive loads without derating at full thermal range. |
| Input Voltage Range | 3.0V to 17V - compatible with 5V, 12V, and 15V intermediate bus architectures. |
| Output Voltage Range | 0.8V to 5.5V - covers core voltages for FPGAs, ADCs, SerDes, and RF ICs. |
| Output Ripple (after ferrite bead) | <10µVRMS - enables direct replacement of low-noise LDOs in precision analog rails. |
| PSRR (up to 100kHz) | >65dB - suppresses upstream supply noise critical for jitter-sensitive clocking circuits. |
| RDS(on) | 25mΩ (HS) / 7mΩ (LS) - minimizes conduction loss and thermal rise at 4.5A load. |
| Accuracy | ±1% over temperature - ensures stable reference for high-resolution data converters. |
Pinout & Package
TPS62914RPYR uses a 14-pin VQFN-HR (RPY) package, 2.5mm × 3.0mm, 0.5mm pitch, with exposed thermal pad. Pin functions are validated per TI SLVSG94C datasheet Section 4.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 PSNS | Power sense ground | Direct connection to GND plane for accurate current sensing; not electrically tied to PGND. |
| 2 NR/SS | Noise reduction / soft-start | Capacitor here sets soft-start time and filters internal reference to reduce 1/f noise below 20µVRMS. |
| 3 FB | Feedback input | Senses regulated output voltage post-first-stage L-C filter; requires Kelvin connection for accuracy. |
| 4 VO | Output voltage sense | Monitors voltage directly after first inductor - enables regulation point shift for ferrite-bead filter compensation. |
| 5 PG | Power-good open-drain | Signals valid output (93–98% VFB) with 8µs deglitch; requires external pull-up for sequencing. |
| 6 S-CONF | Smart configuration | Resistor-selectable mode: switching frequency, spread spectrum, output discharge, sync enable. |
| 7 EN/SYNC | Enable / sync input | Logic-enable (1.01V threshold) or external clock input (1.9–2.42MHz range for 2.2MHz config). |
| 8,12 VIN | Input power | Dual input pins reduce IR drop and improve high-frequency decoupling for 4.5A operation. |
| 9,11 PGND | Power ground | Separate low-impedance return path for power stage; must be connected to thermal pad. |
| 10,13 SW | Switch node | Two SW pins reduce parasitic inductance and EMI; connect to start winding of output inductor. |
| 14 BOOT | High-side gate drive | Bootstrap supply for HS FET; requires ceramic capacitor (typically 0.1µF) to SW. |
Key Features
| Feature | Design Value |
|---|---|
| Ferrite-bead L-C filter compensation | Integrated loop compensation supports up to 50nH ferrite-bead inductance and 160µF capacitor - enables >30dB attenuation of switching ripple without external op-amps. |
| Low-noise reference filtering | NR/SS pin accepts capacitor (e.g., 470nF) to filter internal reference, reducing 100Hz–100kHz noise to 24.4µVRMS (typical). |
| Configurable spread-spectrum modulation | ±10% frequency dither via S-CONF resistor - lowers mixing spurs in FFT-based ADC systems without increasing EMI peak amplitude. |
| Precision enable with UVLO | 1.01V enable threshold with 200mV hysteresis - allows user-defined input undervoltage lockout and exact power-rail sequencing. |
| Thermal robustness | Rated for –40°C to 150°C junction temperature with thermal shutdown at 170°C - suitable for aerospace, defense, and industrial environments. |
Applications
| High-Speed Data Acquisition | Radar Signal Chain Power |
|---|---|
|
Use Scenario: Powering 16-bit+ SAR or pipeline ADCs in test equipment requiring sub-µV RMS noise floor. IC Role / Device Role / Timing Role: Primary DC/DC regulator supplying analog and digital cores, replacing cascaded LDOs to improve efficiency while maintaining ultra-low ripple. Use Value: Delivers <10µVRMS ripple after ferrite-bead filter - eliminates need for post-regulation LDOs and reduces BOM count by 2–3 components. |
Use Scenario: Biasing RF front-end modules and high-frequency DACs in phased-array radar transceivers. IC Role / Device Role / Timing Role: Low-phase-noise power rail generator for clock distribution ICs and serializer/deserializer PHYs. Use Value: >65dB PSRR up to 100kHz suppresses switching artifacts that would otherwise degrade SNR and spurious-free dynamic range (SFDR). |
| Medical Imaging Electronics | Aerospace Avionics |
|
Use Scenario: Supplying CT/MRI sensor interface ASICs where EMI-induced artifacts corrupt image reconstruction. IC Role / Device Role / Timing Role: Noise-isolated power source for analog front-ends and timing recovery circuits. Use Value: Spread-spectrum modulation + ferrite-bead filtering reduces discrete spectral peaks - prevents aliasing into imaging bandwidth during FFT processing. |
Use Scenario: Powering inertial measurement units (IMUs) and flight control processors in UAVs and satellites. IC Role / Device Role / Timing Role: High-reliability, wide-input buck converter for avionics-grade 28V or 270V DC bus step-down. Use Value: 150°C junction rating and validated operation across –40°C to +125°C ambient - meets DO-160E environmental stress requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62916RPYR | 6A output current, identical pinout and feature set - higher RDS(on) valley current limit (8.8A vs 7.1A) and thermal derating profile. | Required when system load exceeds 4.5A but same PCB layout and filter design can be reused. | Select when future-proofing for higher current or parallel operation; no layout change needed. |
| LM61480RQR | 5A rated, 4.2V–36V input, no integrated ferrite-bead compensation - requires external Type-II/III compensation for second-stage filters. | Used where wider input range is mandatory but ultra-low ripple is secondary to cost or footprint. | Choose only if input voltage exceeds 17V; lacks TPS62914RPYR's verified <10µVRMS ripple guarantee with ferrite bead. |
Compared with TPS62914RPYR, TPS62916RPYR offers higher current headroom in the same footprint, while LM61480RQR trades ripple performance for extended input range - making TPS62914RPYR optimal for noise-critical 3–17V systems demanding guaranteed sub-10µVRMS output.
Availability
TPS62914RPYR is available at Aetrix Electronics and suitable for telecom infrastructure, test-and-measurement instrumentation, and aerospace radar systems requiring stable component supply across extended temperature and long production lifecycles.
Supply support for TPS62914RPYR 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 expertise in high-reliability power conversion ICs.
The TPS6291x family was engineered specifically for noise-sensitive signal-chain applications - enabling high-efficiency DC/DC conversion without sacrificing the ultra-low ripple and PSRR traditionally associated with LDOs.
FAQ
What is the maximum supported ferrite-bead inductance for TPS62914RPYR?
The TPS62914RPYR integrates loop compensation validated for second-stage ferrite-bead L-C filters with up to 50nH inductance and 160µF capacitance. This specification is confirmed in Section 5.3 Recommended Operating Conditions and Figure 5-3 through 5-12 of the SLVSG94C datasheet. Exceeding 50nH may compromise stability or increase output ripple beyond the <10µVRMS guarantee.
Does TPS62914RPYR support external clock synchronization?
Yes, TPS62914RPYR supports external clock synchronization via the EN/SYNC pin. When a logic-level clock signal (1.9–2.42MHz for 2.2MHz config, 1.2–1.6MHz for 1.4MHz, or 0.9–1.2MHz for 1.0MHz) is applied, the device locks to the external frequency. The synchronization duty cycle is specified at 45–55%, and phase delay from EN/SYNC rising edge to SW rising edge is 90ns (typical).
How does the S-CONF pin configure TPS62914RPYR functionality?
The S-CONF pin on TPS62914RPYR selects switching frequency (1.0/1.4/2.2MHz), spread-spectrum modulation (on/off), output discharge (on/off), and synchronization enable via an external resistor per Table 6-1 in the datasheet. Configuration is latched at startup and cannot be changed dynamically. Resistor values range from GND (1MHz) to 100kΩ (1MHz + random SSM + discharge), with 4% tolerance required for reliable detection.
What is the output voltage accuracy of TPS62914RPYR over temperature?
The TPS62914RPYR guarantees ±1% output voltage accuracy over the full junction temperature range of –40°C to 150°C, as specified in Section 5.5 Electrical Characteristics (VFB parameter). This applies to the feedback reference voltage of 0.8V, translating to ±8mV absolute error - critical for maintaining ADC full-scale accuracy and PLL lock stability.
Can TPS62914RPYR operate without the NR/SS capacitor?
No - the NR/SS capacitor is mandatory for stable operation. It serves dual roles: setting soft-start time and filtering the internal voltage reference to achieve low 1/f noise (<20µVRMS). Omitting it results in uncontrolled startup and elevated low-frequency noise. A typical value is 470nF for ~5ms soft-start and 24.4µVRMS noise (VIN=12V, VOUT=1.2V, fSW=1MHz).
TPS62914RPYR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- TPS6291x
- 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:
- 4.5A
- Frequency - Switching:
- 1MHz, 1.4MHz, 2.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-VQFN-HR (2.5x3)
TPS62914RPYR FAQ
1.How can I place an order for TPS62914RPYR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62914RPYR 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 TPS62914RPYR reliable?
The price and inventory of TPS62914RPYR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62914RPYR is usually 5 days.
3.What payment methods are accepted for TPS62914RPYR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62914RPYR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62914RPYR?
TPS62914RPYR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62914RPYR 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 TPS62914RPYR?
For technical support, including TPS62914RPYR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62914RPYR requirements.
6.How does Aetrix verify that TPS62914RPYR is sourced from the original manufacturer or authorized distributors?
All TPS62914RPYR 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 TPS62914RPYR meets industry standards.
7.What is the process for return or replacement of TPS62914RPYR?
All TPS62914RPYR units undergo pre-shipment inspection (PSI). If there is an issue with TPS62914RPYR, 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 TPS62914RPYR part is unused and in its original packaging.
Return procedure for TPS62914RPYR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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