TPS53515RVER - 12A Sync Buck Converter 18V In | Texas Instruments
MPN: TPS53515RVER ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.47 | $5.47 |
| 10 | $4.92 | $49.20 |
| 100 | $4.25 | $425.00 |
| 500 | $3.72 | $1,860.00 |
| 1,000 | $3.18 | $3,180.00 |
TPS53515RVER Overview
A buck (step-down) converter is a switching voltage regulator that converts a higher input voltage to a lower regulated output using an inductor, switches, and output capacitors. Within the power-management hierarchy, the TPS53515 sits at the power-management IC level as a fully integrated point-of-load (POL) switching regulator, combining controller and power stage in one package.
Key features include 12 A continuous output current with high-performance integrated MOSFETs, a 600 mV voltage reference with +/-0.5% tolerance for precise output settings, and D-CAP3 control delivering fast load-step transient response. The device supports all-ceramic output capacitors, eliminating electrolytic capacitors and improving reliability and board height.
Technically, the adaptive on-time D-CAP3 architecture varies the on-time with input and output voltage to maintain near-constant switching frequency, providing ease of use and ultra-fast transient response without complex loop compensation. The integrated boost switch drives the high-side MOSFET gate without an external bootstrap diode, and the low on-resistance MOSFETs yield high conversion efficiency at heavy loads. TI's inductor-on-top reference design achieves greater than 87% efficiency with about 2.6 W power loss at 12 A load and 12 mV output ripple using only 10x22 uF ceramic output capacitors.
Typical applications include point-of-load supplies for ASICs, DSPs, and FPGAs, network and telecom infrastructure cards, and industrial DC-DC power stages where a compact 12 A solution with minimal external parts is needed.
When designing, ensure the bias pin is supplied within its 4.5 V to 25 V range for reliable gate drive, and select the inductor based on the recommended values in the datasheet for stability across the 0.6 V to 5.5 V output range.
This page synthesizes distributor pricing, drop-in alternatives, comparison data, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for TPS53515RVER — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with TPS53515RVER (same form factor and footprint) — differing in Control Mode, Input Voltage Range, Package, Topology.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
TPS53513RVER
✓ In Stock
$3.55 / Unit
View Datasheet →TPS53125RGER
📋 Reference alternative (not in catalog)
TPS53515RVER Maximum Ratings & Electrical Characteristics
| Topology | Synchronous buck (step-down) |
| Control Mode | D-CAP3 adaptive on-time |
| Input Voltage Range | 1.5 V to 18 V |
| Bias Voltage Range | 4.5 V to 25 V |
| Output Voltage Range | 0.6 V to 5.5 V |
| Maximum Output Current | 12 A continuous |
| Reference Voltage | 600 mV |
| Reference Tolerance | +/-0.5% |
| High-Side MOSFET RDS(on) | 13.8 mOhm (integrated) |
| Low-Side MOSFET RDS(on) | 5.9 mOhm (integrated) |
| Bootstrap Diode | Integrated boost switch |
| Output Capacitor Support | All ceramic output capacitors |
| Number of Outputs | 1 |
| Package | 28-VFQFN Exposed Pad (RVF) |
| Mounting Type | Surface Mount |
TPS53515RVER 28-vfqfn exposed pad (rvf) Pin Configuration Guide
Pin configuration for TPS53515RVER (28-vfqfn exposed pad (rvf) package). This power device features gate, drain, and source terminals. For non-polarized packages, refer to the manufacturer datasheet for exact pin 1 orientation and footprint details. Common applications include power supply design, motor driving, and load switching.
No detailed pinout data available for TPS53515RVER.
Refer to the datasheet for full pin configuration.
Typical Applications
TPS53515RVER is suitable for 6 applications: FPGA/ASIC Point-of-Load Power, Networking and Telecom Infrastructure, Industrial DC-DC Power Stages, Compact / Space-Constrained Power, Test and Measurement Instruments, Data Center Server Accessories.
FPGA/ASIC Point-of-Load Power
The TPS53515RVER is a strong fit for FPGA, ASIC, and DSP core-voltage rails because its 12 A continuous rating covers most core loads while the 600 mV +/-0.5% reference guarantees the sub-1% accuracy modern cores require. D-CAP3 control provides fast load-step response for bursty clock-domain transients, and support for all-ceramic output capacitors keeps the solution low-profile. Placed directly beside the load with a single power inductor and 10x22 uF ceramics, it converts an 12 V intermediate bus down to 0.9 V-class core rails; the trade-off versus a multi-phase solution is less current headroom, so reserve this part for loads at or below 12 A.
Recommended
Networking and Telecom Infrastructure
Line cards and switch fabrics in networking equipment distribute a 12 V intermediate bus that must be stepped down efficiently at each point of load. The TPS53515RVER accepts that 12 V directly within its 1.5 V to 18 V input range, and its integrated 13.8 mOhm / 5.9 mOhm MOSFETs keep conversion efficiency high to limit card-level power budgets and airflow demand. The adaptive on-time D-CAP3 loop maintains stable operation through traffic-dependent load swings, and the low external component count increases density on crowded cards. Its main trade-off in this domain is single-output architecture - one device per rail is required.
Recommended
Industrial DC-DC Power Stages
Industrial control and automation systems benefit from the TPS53515RVER's wide 4.5 V to 25 V bias range and robust integrated power stage. Machines and PLC I/O modules frequently run 12 V or 18 V distribution rails that need regulated 1.0 V to 5 V supplies for processors, memory, and interface ICs; this device converts those rails in a compact 28-pin VQFN footprint. All-ceramic output capacitor support improves reliability in high-vibration and high-temperature environments where electrolytics are a failure point. Designers should validate thermal performance with copper pours on the exposed pad since industrial ambients often reach 70 C to 85 C.
Recommended
Compact / Space-Constrained Power
TI's inductor-on-top step-down reference design for the TPS53515 demonstrates how the device suits height- and area-limited systems: stacking the inductor over the IC reduces X-Y board area while achieving greater than 87% efficiency, about 2.6 W power loss at 12 A load, and only 12 mV of output ripple using just 10x22 uF ceramic output capacitors. The integrated MOSFETs and boost switch eliminate external power components, and D-CAP3 removes compensation networks. This makes the part attractive for mezzanine cards, small modules, and any product where the power supply footprint directly constrains system size.
Recommended
Test and Measurement Instruments
Bench instruments and automated test equipment need clean, accurate, responsive local rails for analog front ends and digital processing sections. The TPS53515RVER's 600 mV reference with +/-0.5% tolerance yields predictable output accuracy, while D-CAP3's fast transient response prevents rail droop when measurement channels switch on simultaneously. The 0.6 V to 5.5 V adjustable range lets one qualified design cover multiple instrument variants from 1.0 V digital rails to 5 V interface supplies. Designers should note that D-CAP3's variable-frequency behavior under light load may require post-regulation for ultra-low-noise analog rails.
Recommended
Data Center Server Accessories
Server accessories such as BMC cards, storage controllers, and NIC auxiliary circuitry draw from 12 V rack power that needs efficient local conversion. The TPS53515RVER's 18 V maximum input tolerates bus transients, its 12 A capability feeds memory and controller rails directly, and high integrated-MOSFET efficiency minimizes waste heat inside confined server chassis. The all-ceramic capacitor support suits the long-life reliability expectations of data-center hardware, and the compact VQFN-28 footprint fits dense add-in-card layouts. Its single-rail output means multi-rail designs simply instantiate one regulator per voltage, simplifying BOM consolidation.
Recommended
Recommended Products Summary
Engineering reference data for TPS53515RVER — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TPS53513RVER | TPS53125RGER |
|---|---|---|---|
| Package | 28-VFQFN Exposed Pad (RVF) | VQFN-28 (RVF) - same footprint | VQFN-28 (RGE) - verify land pattern |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments |
Key Differentiators
- 12 A capability in a compact integrated stage (vs TPS53513RVER)
- D-CAP3 with all-ceramic output support (vs TPS53125RGER)
- Integrated boost switch eliminates a BOM part (vs TPS53513RVER)
Design Notes
At 12 A continuous load the integrated MOSFETs dissipate real power; TI's reference design reports about 2.6 W of loss at full load with greater than 87% efficiency. Estimated: at IOUT = 12 A this equates to roughly 1.9 W of heat in the IC, so connect the exposed pad to a solid ground plane with a multi-via thermal array - at least a 4x4 via matrix under the pad - and use 2 oz copper on the top layer for the power path. Verify junction temperature against the datasheet limit at your maximum ambient before finalizing the layout.
Keep the power loop (input capacitors, integrated MOSFETs, SW node, inductor, output capacitors) as compact as possible to minimize parasitic inductance and SW-node ringing. Place the input ceramic capacitors within 2-3 mm of the PVIN pins, route the feedback trace away from the SW node and inductor, and place the bootstrap capacitor close to the BOOT and SW pins. The D-CAP3 architecture tolerates compact layouts well, but a clean star ground under the exposed pad remains essential for stability and EMI.
Two frequent mistakes: first, omitting or under-specifying the bias supply - the bias pin must stay within 4.5 V to 25 V or the gate drive and control circuitry will not operate reliably; second, selecting an inductor value outside the datasheet-recommended range, which can destabilize the D-CAP3 loop or cause excessive ripple current. Also remember the 18 V absolute input limit when a 24 V rail is present - only the bias pin tolerates up to 25 V, not the power-stage input.
Compliance Information
Compliance status was not explicitly stated in the verified web data; confirm RoHS/REACH status on the official TI TPS53515 product page before production release.
