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Texas Instruments TPS568215OARNNR
- Part No.:
- TPS568215OARNNR
- Manufacturer:
- Texas Instruments
- Package:
- 18-PowerVFQFN
- Datasheet:
-
TPS568215OARNNR.pdf
- Description:
- IC REG BUCK ADJ/0.6V 8A 18VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:11,940
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Product details
Overview
TPS568215OARNNR from Texas Instruments is an 8-A synchronous step-down DC/DC converter with integrated 19-mΩ high-side and 9.4-mΩ low-side MOSFETs, D-CAP3™ adaptive on-time control, 0.6 V ±1% reference voltage, and selectable 400/800/1200 kHz switching frequency - designed for high-density power delivery in server, laptop, and FPGA applications.
For engineers reviewing the TPS568215OARNNR datasheet, TPS568215OARNNR pinout, TPS568215OARNNR application, or TPS568215OARNNR equivalent, key selection factors include its 4.5–17 V input range, monotonic startup into pre-biased outputs, out-of-audio (OOA) light-load operation, adjustable current limit (6/8/10 A), and support for all-ceramic output capacitors without external compensation.
Technical Context
The TPS568215OARNNR employs D-CAP3™ control with internal ripple injection to enable fast transient response and stable regulation with ceramic output capacitors - eliminating need for external loop compensation. Its adaptive on-time architecture dynamically adjusts switch-on duration based on VIN, VOUT, and pseudo-fixed frequency, while internal ramp generation simulates ESR ripple for accurate current sensing.
Operation includes dual-mode behavior: forced continuous conduction mode (FCCM) at heavy loads for tight voltage regulation, and out-of-audio (OOA) mode at light loads to maintain switching frequency >25 kHz and avoid audible noise. MODE pin configuration selects among 16 combinations of current limit (ILIM−1/ILIM/ILIM+1), switching frequency (400/800/1200 kHz), and light-load mode (FCCM/OOA).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 17 V - supports wide industrial and computing rail inputs including 5 V, 12 V, and 15 V systems. |
| Output Current | 8 A continuous - rated for sustained load in high-performance digital ICs like FPGAs and DSPs. |
| Feedback Reference | 0.6 V ±1% over −40°C to +150°C - enables precise output regulation across full junction temperature range. |
| Switching Frequency | Selectable 400 / 800 / 1200 kHz - allows trade-off between efficiency (lower FSW) and solution size (higher FSW). |
| MOSFET RDS(on) | 19 mΩ (HS) / 9.4 mΩ (LS) at 25°C - minimizes conduction loss and enables >95% peak efficiency at 12 VIN/1.2 VOUT. |
| Control Mode | D-CAP3™ adaptive on-time - delivers sub-10 µs load transient response without external compensation components. |
| Operating Junction Temp | −40°C to +150°C - qualified for thermally demanding environments including server VRMs and gaming SoC rails. |
| Package | 18-pin HotRod™ QFN (3.5 mm × 3.5 mm) - exposes die pad for low thermal resistance (RθJB = 10.0°C/W) and high-current PGND routing. |
Pinout & Package
TPS568215OARNNR uses a thermally enhanced 18-pin VQFN (RNN) package with 3.5 mm × 3.5 mm body and exposed thermal pad. Pin layout features multiple parallel PGND pins (pins 3,4,5,8,9,10) and VIN pins (2,11) to minimize PCB trace inductance and improve high-current handling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 BOOT | Bootstrap supply | Drives high-side MOSFET gate; requires 0.1 µF capacitor to SW to sustain gate voltage during HS conduction. |
| 2,11 VIN | Main input supply | Power input for control circuitry and gate drivers; decouple each pin individually to PGND with ≥10 µF ceramic. |
| 3,4,5,8,9,10 PGND | Power ground | Low-impedance return path for high di/dt switch currents; must connect directly to thermal pad and input/output caps. |
| 6,7 SW | Switch node | Connection point for output inductor; carries full AC switching waveform; layout critical for EMI and efficiency. |
| 12 AGND | Analog ground | Reference for FB, SS, EN, MODE; tie to PGND at single point near IC to avoid noise coupling. |
| 13 FB | Feedback input | Monitors output via resistor divider; internal 0.6 V reference sets VOUT = 0.6 × (1 + RUPPER/RLOWER). |
| 14 SS | Soft-start control | External capacitor sets soft-start time (tSS ≈ 0.6 V × CSS / 6 µA); default = 1 ms with no cap. |
| 15 EN | Enable input | Active-high logic control; internal pull-up enables device when floating; UVLO adjustable via resistor divider from VIN. |
| 16 PGOOD | Power-good indicator | Open-drain output asserting low if VOUT < 84% or >116% of VFB, thermal shutdown, or during soft-start. |
| 17 VREG5 | Internal LDO output | 4.7 V ±2.7% regulated bias rail; can be overdriven externally with 5 V to reduce quiescent current and improve efficiency. |
| 18 MODE | Configuration select | Resistor-divider voltage (from VREG5 to AGND) selects current limit, FSW, and light-load mode per Table 3 in datasheet. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Power Stage | 19-mΩ HS / 9.4-mΩ LS MOSFETs enable 8-A continuous output in 3.5×3.5 mm footprint with no external power devices required. |
| D-CAP3™ Control | Adaptive on-time topology with internal ripple injection eliminates need for external compensation and supports ultra-low-ESR ceramic output capacitors. |
| Out-of-Audio Operation | Guarantees minimum 25 kHz switching frequency under light/no load to prevent audible coil whine in consumer electronics. |
| Adjustable Current Limit | Three valley-current thresholds (6/8/10 A) set via MODE pin resistor divider - enables flexible design reuse across 6–12 A solutions. |
| VREG5 External Bias | 5-V external drive on VREG5 pin reduces input quiescent current and improves light-load efficiency by shifting bias source off VIN rail. |
| Monotonic Pre-biased Startup | Starts switching only after internal reference exceeds pre-existing VOUT, preventing reverse current and ensuring safe ramp-up into loaded systems. |
Applications
| Server VRM Core Rail | Laptop CPU/GPU Core Supply |
|---|---|
Use Scenario: Regulating 1.2 V core voltage for multi-core Xeon or EPYC processors under dynamic 0–8 A load transients. IC Role / Device Role / Timing Role: Primary synchronous buck controller delivering tightly regulated core power with sub-10 µs transient response. Use Value: D-CAP3™ control maintains <±10 mV regulation during 4-A/µs load steps; FCCM mode ensures stability at full 8-A load. |
Use Scenario: Powering Intel Core i7 or AMD Ryzen mobile CPUs in thin-and-light notebooks with strict thermal and size constraints. IC Role / Device Role / Timing Role: High-density step-down converter operating from 12 V battery or adapter input to 0.8–1.3 V CPU rail. Use Value: 3.5×3.5 mm HotRod™ QFN fits compact layouts; OOA mode eliminates audible noise during idle/sleep states. |
| FPGA I/O Bank Supply | Gaming System Memory Rail |
Use Scenario: Generating 1.8 V or 2.5 V I/O supply for Xilinx Kintex or Intel Stratix FPGAs with high dv/dt noise immunity requirements. IC Role / Device Role / Timing Role: Low-noise, fast-transient regulator supporting programmable I/O standards with minimal external components. Use Value: 0.6 V reference accuracy and monotonic startup prevent configuration errors during FPGA configuration from pre-biased rails. |
Use Scenario: Delivering 1.35 V DDR4 or 1.1 V LPDDR5 memory rail in gaming laptops or consoles with bursty 6–8 A load profiles. IC Role / Device Role / Timing Role: High-efficiency buck converter optimized for intermittent high-current bursts typical of GPU memory access. Use Value: Selectable 800 kHz FSW balances PCB area and efficiency; ILIM option supports exact 8-A rating matching JEDEC memory specs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS568215RNRR | Same electrical specs and pinout; differs only in tape-and-reel packaging (3000 pcs/reel vs 2500 pcs/reel for OARNNR) and RoHS compliance marking. | No functional difference; suitable for identical designs where reel quantity or marking requirements vary. | Select TPS568215RNRR for higher-volume automated assembly requiring 3000-unit reels. |
| TPS56C215RNNR | 12-A rated version with identical 3.5×3.5 mm HotRod™ QFN package and pin-to-pin compatibility; higher RDS(on) (15 mΩ HS / 7.5 mΩ LS) and derated thermal performance. | Supports higher continuous current but requires thermal validation at >8 A; shares same MODE pin configuration table. | Choose TPS56C215RNNR when future-proofing for 10–12 A loads or when board layout must accommodate scalable current capability. |
Compared with TPS568215OARNNR, TPS568215RNRR offers identical performance in larger reels, while TPS56C215RNNR provides 50% higher current capacity in the same footprint - enabling one PCB design to serve 8-A and 12-A product tiers with only BOM changes.
Availability
TPS568215OARNNR is available at Aetrix Electronics and suitable for server VRMs, laptop CPU supplies, and FPGA power delivery requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for TPS568215OARNNR 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 90 years of innovation in high-reliability power conversion ICs.
TPS568215OARNNR belongs to TI's SWIFT™ monolithic buck converter family, engineered for space-constrained, high-efficiency point-of-load regulation in computing, communications, and industrial systems demanding fast transient response and thermal robustness.
FAQ
What is the maximum continuous output current supported by the TPS568215OARNNR?
The TPS568215OARNNR is rated for 8 A continuous output current under recommended operating conditions (TJ ≤ 150°C, proper PCB thermal design). It supports up to 10 A in ILIM+1 mode at 400 kHz or 800 kHz, but sustained 10-A operation requires thermal validation per RθJA = 42.3°C/W and derating curves in the datasheet.
Does the TPS568215OARNNR require external compensation components?
No, the TPS568215OARNNR uses D-CAP3™ adaptive on-time control with internal ripple injection, eliminating the need for external compensation networks. This simplifies design and ensures stability with all-ceramic output capacitors - verified across 0.6 V to 5.5 V output range and 400–1200 kHz switching frequencies.
How is the switching frequency selected on the TPS568215OARNNR?
Switching frequency (400/800/1200 kHz) is configured via the MODE pin using a resistor divider from VREG5 to AGND. The voltage at MODE is sampled at startup and latched; Table 3 in the datasheet specifies exact RM_H/RM_L values for each combination of FSW, current limit, and light-load mode.
Can the TPS568215OARNNR start up safely into a pre-biased output?
Yes, the TPS568215OARNNR supports monotonic startup into pre-biased outputs. It monitors VFB during soft-start and initiates switching only after the internal reference voltage exceeds the existing output voltage - preventing reverse current flow and ensuring controlled ramp-up.
What is the purpose of the VREG5 pin on the TPS568215OARNNR?
The VREG5 pin is the output of an internal 4.7-V LDO that powers all internal circuitry and gate drivers. It can be overdriven with an external 5-V supply to reduce input quiescent current and improve light-load efficiency. A 4.7-µF capacitor is required for bypassing, and UVLO monitoring on this pin protects against low-bias conditions.
TPS568215OARNNR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- SWIFT™
- Package/Case:
- 18-PowerVFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable (Fixed)
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 17V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 8A
- Frequency - Switching:
- Up to 1.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 18-VQFN-HR (3.5x3.5)
TPS568215OARNNR FAQ
1.How can I place an order for TPS568215OARNNR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS568215OARNNR 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 TPS568215OARNNR reliable?
The price and inventory of TPS568215OARNNR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS568215OARNNR is usually 5 days.
3.What payment methods are accepted for TPS568215OARNNR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS568215OARNNR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS568215OARNNR?
TPS568215OARNNR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS568215OARNNR 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 TPS568215OARNNR?
For technical support, including TPS568215OARNNR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS568215OARNNR requirements.
6.How does Aetrix verify that TPS568215OARNNR is sourced from the original manufacturer or authorized distributors?
All TPS568215OARNNR 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 TPS568215OARNNR meets industry standards.
7.What is the process for return or replacement of TPS568215OARNNR?
All TPS568215OARNNR units undergo pre-shipment inspection (PSI). If there is an issue with TPS568215OARNNR, 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 TPS568215OARNNR part is unused and in its original packaging.
Return procedure for TPS568215OARNNR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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