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Texas Instruments TPS54286PWP
- Part No.:
- TPS54286PWP
- Manufacturer:
- Texas Instruments
- Package:
- 14-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TPS54286PWP.pdf
- Description:
- IC REG BUCK ADJ 2A DL 14HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,358
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Product details
Overview
TPS54286PWP from Texas Instruments is a dual non-synchronous buck converter IC with integrated 100-mΩ high-side MOSFETs, supporting 2-A output per channel across a 4.5-V to 28-V input range and delivering regulated outputs from 0.8 V to 90% of VIN. It operates at 600 kHz switching frequency, features dual PWM outputs 180° out-of-phase, and is used in set-top boxes and digital TV power rails.
For engineers reviewing the TPS54286PWP datasheet, TPS54286PWP pinout, TPS54286PWP application, or TPS54286PWP equivalent, key selection considerations include its fixed 600 kHz frequency, dual-channel independent enable control, ratiometric/sequential startup via SEQ pin, and two-level overcurrent protection on Channel 2.
Technical Context
The TPS54286PWP implements current-mode control with internal slope and loop compensation, eliminating external compensation components. Its dual PWM channels share a common 5.25-V BP regulator, 0.8-V ±1.5% reference, and thermal shutdown at 148°C.
Startup sequencing is determined by the SEQ pin state (BP/GND/floating), enabling ratiometric or master-slave operation. Overcurrent protection on Channel 2 is selectable via ILIM2 pin (GND = 1.5 A, floating = 3.0 A, BP = 1.5 A), while Channel 1 is fixed at 3.0 A.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 600 kHz (TPS54286 variant; enables smaller magnetics vs. 300 kHz TPS54283) |
| Input Voltage Range | 4.5 V to 28 V (supports wide industrial and consumer DC bus inputs) |
| Output Current per Channel | Up to 2 A continuous (limited by thermal design and PCB copper area) |
| Feedback Reference Voltage | 0.8 V ±1.5% (sets output voltage via resistor divider; enables precise low-VOUT regulation) |
| Soft Start Time | 2.1 ms (internally fixed; prevents inrush current during power-up) |
| Overcurrent Threshold (Ch1) | 3.0 A typical (pulse-by-pulse protection; no external sensing required) |
| Thermal Shutdown | 148°C with 20°C hysteresis (protects against sustained overload or poor heatsinking) |
Pinout & Package
TPS54286PWP uses a 14-pin PowerPAD™ HTSSOP (PWP) package with exposed thermal pad on bottom side, requiring direct connection to PCB ground plane for thermal performance and EMI control.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PVDD1 | Power input for Output 1 high-side MOSFET | Must be bypassed with ≥10-µF ceramic capacitor; supports independent input sourcing from PVDD2 |
| PVDD2 | Main supply for control circuitry, EN pull-ups, and Output 2 MOSFET | Monitored for UVLO (4.1 V turn-on); powers internal 5.25-V BP regulator |
| BOOT1 / BOOT2 | Bootstrap gate drive supplies | Each requires 22–82-nF capacitor to SWx; internal switch charges from BP during OFF time |
| SW1 / SW2 | Switch node outputs | Connect to external inductor; snubber recommended to suppress ringing |
| FB1 / FB2 | Voltage feedback inputs | Regulate output to 0.8 V reference; resistor divider sets final output voltage |
| EN1 / EN2 | Active-low enable inputs | Internal 6-µA pull-up to PVDD2; <0.9 V enables soft start; floating = enabled |
| SEQ | Startup sequencing mode selector | BP = Output 2 then Output 1; GND = Output 1 then Output 2; floating = ratiometric |
| ILIM2 | Channel 2 overcurrent level select | GND = 1.5 A, floating = 3.0 A, BP = 1.5 A; internal 150-kΩ divider to BP and GND |
| BP | 5.25-V bootstrap regulator output | Bypass with 4.7–10-µF X7R/X5R ceramic capacitor; powers BOOT1/BOOT2 switches |
| GND | Analog and power ground | Connected to thermal pad; must tie to system ground plane for thermal and noise performance |
Key Features
| Feature | Design Value |
|---|---|
| Dual 180° out-of-phase PWM outputs | Reduces input ripple current by ~70% vs. in-phase operation, easing input capacitor sizing |
| Internally compensated current-mode control | Eliminates need for external compensation network; simplifies layout and reduces BOM count |
| Selectably scalable overcurrent protection (Ch2) | Three ILIM2 states allow optimization of external FETs/inductors for asymmetric load requirements |
| 2.1-ms internal soft start | Prevents output overshoot and inrush stress on downstream loads without external timing components |
| Ratiometric or sequential startup via single SEQ pin | Enables compliance with FPGA/CPU power sequencing requirements using only one configuration pin |
Applications
| Set-Top Box Power Rails | Digital Television Core Supplies |
|---|---|
Use Scenario: Providing separate 3.3-V and 1.2-V rails for demodulator, decoder, and display controller ICs in cable/satellite STBs. IC Role / Device Role / Timing Role: Dual-output buck converter delivering independently regulated, sequenced voltages with minimal external components. Use Value: Eliminates need for two discrete converters; 600 kHz operation allows compact 2.2-µH inductors and reduces solution footprint by >30%. |
Use Scenario: Generating 5-V and 3.3-V main logic supplies in LCD/LED TVs where EMI and thermal density are critical. IC Role / Device Role / Timing Role: Dual-channel non-synchronous buck regulator with interleaved switching to lower input ripple and improve thermal distribution. Use Value: 180° phase shift cuts peak input current by half, reducing RMS input capacitor heating and enabling smaller 1206-case ceramics. |
| Embedded DSP Power Management | Consumer Audio/Video SoC Platforms |
Use Scenario: Supplying core (1.1 V) and I/O (3.3 V) voltages for TI C6000-series DSPs in portable media players and VoIP phones. IC Role / Device Role / Timing Role: Dual-output regulator with independent EN1/EN2 control enabling dynamic power gating of DSP subsystems. Use Value: Independent enable pins allow software-controlled shutdown of unused domains, reducing standby current to <100 µA. |
Use Scenario: Delivering multiple rail voltages (e.g., 1.8 V, 3.3 V) to application processors and memory interfaces in smart speakers and streaming sticks. IC Role / Device Role / Timing Role: Integrated dual buck converter with internal 0.8-V reference and fixed-frequency control for stable low-noise operation. Use Value: Internal 0.8-V reference tolerance (±1.5%) ensures <±2% output accuracy across temperature, meeting SoC VDD tolerance specs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS54283PWP | 300 kHz switching frequency; identical pinout, package, and feature set except frequency | Better efficiency at light loads; larger magnetics required for same power density | Select when prioritizing efficiency over size or when 600 kHz EMI conflicts with system bands |
| LM26420XSDE/NOPB | 600 kHz, dual synchronous buck; 2.5-A per channel; requires external compensation | Higher efficiency due to synchronous rectification; needs additional compensation components | Choose when >90% efficiency at full load is mandatory and board space allows extra passives |
Compared with TPS54286PWP, TPS54283PWP trades higher efficiency at light loads for larger passive size, while LM26420XSDE/NOPB delivers superior efficiency via synchronous operation but increases design complexity with external compensation and gate drive tuning.
Availability
TPS54286PWP is available at Aetrix Electronics and suitable for set-top box, digital television, and embedded DSP power supply designs requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for TPS54286PWP 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 TPS5428x product line was designed specifically for cost-sensitive, space-constrained dual-rail applications in consumer electronics, delivering integrated high-side FETs, internal compensation, and flexible sequencing in a thermally enhanced HTSSOP package.
FAQ
What is the switching frequency of the TPS54286PWP?
The TPS54286PWP operates at a fixed 600 kHz switching frequency, as specified in the ordering information and electrical characteristics table. This distinguishes it from the pin-compatible TPS54283PWP, which runs at 300 kHz. The 600 kHz frequency enables smaller external inductors and capacitors, reducing overall solution size while maintaining stable current-mode control.
How does the SEQ pin configure startup sequencing for the TPS54286PWP?
The SEQ pin on the TPS54286PWP selects between three startup modes: tied to BP enables sequential startup with Output 2 first, tied to GND enables Output 1 first, and left floating configures ratiometric startup where both outputs rise simultaneously. The device detects SEQ state at power-on and executes the corresponding soft-start sequence without requiring additional control logic.
What are the overcurrent protection options for Channel 2 on the TPS54286PWP?
Channel 2 overcurrent threshold on the TPS54286PWP is selectable via the ILIM2 pin: connecting ILIM2 to GND sets 1.5 A, leaving it floating sets 3.0 A, and tying it to BP also sets 1.5 A. This allows designers to scale external components (e.g., inductors, MOSFETs) for asymmetric loads-such as powering a low-current peripheral alongside a high-current processor core-without compromising fault protection integrity.
Can the TPS54286PWP operate with different input voltages on PVDD1 and PVDD2?
Yes, the TPS54286PWP supports dual-supply operation: PVDD1 powers only the Output 1 high-side MOSFET, while PVDD2 powers the control circuitry, EN pull-ups, and Output 2 MOSFET. This allows PVDD1 and PVDD2 to be sourced from independent rails (e.g., 12 V for Output 1, 5 V for Output 2), enabling flexible power architecture design in multi-rail systems without cross-coupling or shared supply constraints.
What thermal management requirements apply to the TPS54286PWP package?
The TPS54286PWP uses a 14-pin PowerPAD™ HTSSOP (PWP) package with an exposed thermal pad that must be soldered directly to a PCB ground plane. Thermal impedance is 2.07°C/W junction-to-pad at +25°C with no airflow; derating is required above +85°C ambient. Proper thermal pad connection is essential to sustain 2-A continuous output per channel and prevent thermal shutdown at 148°C.
TPS54286PWP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-PowerTSSOP (0.173", 4.40mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 2
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 28V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 25.2V
- Current - Output:
- 2A
- Frequency - Switching:
- 630kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-HTSSOP
TPS54286PWP FAQ
1.How can I place an order for TPS54286PWP through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS54286PWP 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 TPS54286PWP reliable?
The price and inventory of TPS54286PWP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS54286PWP is usually 5 days.
3.What payment methods are accepted for TPS54286PWP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS54286PWP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS54286PWP?
TPS54286PWP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS54286PWP 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 TPS54286PWP?
For technical support, including TPS54286PWP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS54286PWP requirements.
6.How does Aetrix verify that TPS54286PWP is sourced from the original manufacturer or authorized distributors?
All TPS54286PWP 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 TPS54286PWP meets industry standards.
7.What is the process for return or replacement of TPS54286PWP?
All TPS54286PWP units undergo pre-shipment inspection (PSI). If there is an issue with TPS54286PWP, 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 TPS54286PWP part is unused and in its original packaging.
Return procedure for TPS54286PWP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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