TPS54JA20RWWR Texas Instruments Integrated Circuit (Other) In Stock
Texas Instruments TPS54JA20RWWR is a 12 A synchronous buck regulator accepting 2.7 V to 16 V input with voltage-mode PWM control in a QFN-21 package. Delivers high efficiency power conversion from 3 V nominal bus with 15-year product longevity. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 22
- Lifecycle
- ACTIVE
- Datasheet
- TPS54JA20RWWR Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $2.0900(MOQ 100)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 12 A synchronous buck regulator with 2.7 V to 16 V input range covering both 3.3 V and 12 V intermediate bus architectures
- Voltage-mode PWM control providing inherently noise-immune regulation independent of inductor DCR tolerance
- 15-year estimated product lifetime (introduced June 2020) ensuring long-term supply availability for industrial designs
- QFN-21 package with integrated high-side and low-side MOSFETs reducing external component count and PCB area
Applications
The TPS54JA20RWWR is designed for high-current point-of-load regulation in server blades, network switches, and industrial PLCs that draw up to 12 A from 3.3 V, 5 V, or 12 V intermediate bus rails. Its wide 2.7 V to 16 V input range makes it suitable for powering FPGA core and I/O rails, multi-core DSPs, and high-speed memory interfaces where precise, stable voltages under dynamic load are required. The device is also deployed in communications infrastructure, motor controller boards, and embedded computing modules requiring a rugged, long-lifecycle power solution with integrated switches.
Specifications
| Pbfree Code | Yes |
| Date Of Intro | 2020-06-28 |
| YTEOL | 15 |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | VOLTAGE-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 16V |
| Input Voltage-Min | 2.7V |
| Input Voltage-Nom | 3V |
| JESD-30 Code | R-PQCC-N21 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Output Current-Max | 12A |
| Output Voltage-Max | 5.5V |
| Output Voltage-Min | 0.9V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | LCC21,.12X.16(UNSPEC) |
| Package Shape | RECTANGULAR |
| Package Style | CHIP CARRIER, VERY THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Supply Current-Max (Isup) | 0.85mA |
| Supply Voltage-Nom (Vsup) | 3V |
| Surface Mount | YES |
| Switcher Configuration | BUCK |
| Switching Frequency-Max | 1000kHz |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Tin (Sn) |
| Terminal Form | NO LEAD |
| Terminal Position | QUAD |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 2 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
| Country of Origin | Philippines |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for TPS54JA20RWWR:
suggested
Frequently Asked Questions
What maximum output current does TPS54JA20RWWR deliver, and what input voltage range does it support?
The TPS54JA20RWWR is rated for 12 A continuous output current and accepts an input voltage from 2.7 V to 16 V, with a nominal design point of 3 V for low-voltage bus applications. The 12 A capability is sufficient to power high-core-count FPGAs, multi-die memory modules, and multi-amp digital signal processors from a single regulator, reducing the number of power stages required on a board and simplifying the power distribution network design.
How does voltage-mode PWM control in TPS54JA20RWWR differ from current-mode control, and what are the design trade-offs?
Voltage-mode PWM control in the TPS54JA20RWWR uses a single feedback loop comparing the output voltage to a reference, generating the duty cycle directly. Unlike current-mode designs, voltage-mode control is insensitive to inductor DCR variation across temperature, simplifying inductor selection and improving lot-to-lot consistency. The trade-off is a slightly slower transient response to load steps compared to peak-current-mode controllers; however, the external compensation network can be optimised for the specific inductance and output capacitance values to achieve sub-50 µs settling to a 6 A load step.
What is the estimated product lifetime of TPS54JA20RWWR, and why does this matter for industrial equipment procurement?
Texas Instruments assigns a 15-year estimated product lifetime to the TPS54JA20RWWR (introduced June 2020, projecting support through approximately 2035). Industrial and infrastructure equipment must often be maintained for 10–20 years after initial deployment; a 15-year lifecycle commitment from the manufacturer reduces the risk of premature end-of-life that would force costly power-stage redesigns or last-time-buy inventory strategies. This makes the device attractive for railway, energy, and factory automation designs with decade-long service obligations.
For a 5 V to 1.0 V conversion at 10 A in a dense server blade, what switching frequency range optimises efficiency and component size for TPS54JA20RWWR?
At a 5 V input and 1.0 V output (20% duty cycle), the TPS54JA20RWWR's switching frequency trades off between core switching losses and passive component size. Operating at 500 kHz allows a 1.0 µH to 2.2 µH inductor and 3 × 100 µF ceramic output capacitors to maintain less than 20 mV peak-to-peak output ripple at 10 A while achieving efficiency above 88%. Increasing frequency to 1 MHz halves the inductor value to 0.47 µH (reducing height from 3.5 mm to 2.0 mm) at a cost of 2–3% efficiency reduction due to increased switching losses in the integrated MOSFETs.
Can TPS54JA20RWWR power a DDR4 memory VDD rail directly, and what output voltage accuracy is achievable?
Yes. The TPS54JA20RWWR can regulate the DDR4 VDD rail at 1.2 V with accuracy determined by the external resistor-divider feedback network and internal reference tolerance. Selecting 0.1% tolerance resistors and a precision reference allows output voltage accuracy better than ±1%, equivalent to ±12 mV on a 1.2 V rail, which is within the JEDEC DDR4 specification of 1.2 V ± 0.06 V (5%). The 12 A current capacity also handles high-density DDR4 DIMMs drawing 6 A to 10 A during worst-case simultaneous switching.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 100+ | $2.4370 | $243.70 |
| 250+ | $2.3116 | $577.91 |
| 500+ | $2.2950 | $1147.50 |
| 1000+ | $2.2200 | $2220.00 |
| 3000+ | $2.0900 | $6270.00 |
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