My Inquiry
My Account
Texas Instruments TPS54286PWPR
- Part No.:
- TPS54286PWPR
- Manufacturer:
- Texas Instruments
- Package:
- 14-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TPS54286PWPR.pdf
- Description:
- IC REG BUCK ADJ 2A DL 14HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,782
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS54286PWPR from Texas Instruments is a dual non-synchronous buck converter IC with two integrated 100-mΩ high-side N-channel MOSFETs, supporting independent or sequenced 2-A outputs across a 4.5-V to 28-V input range. It delivers regulated output voltages from 0.8 V to 90% of VIN, operates at 600 kHz switching frequency, and features current-mode control with internal compensation for minimal external components. It is used in digital TV power rails requiring tight sequencing and stable dual-voltage delivery.
For engineers reviewing the TPS54286PWPR datasheet, TPS54286PWPR pinout, TPS54286PWPR application, or TPS54286PWPR equivalent, key selection criteria include its fixed 600 kHz frequency, dual PWM outputs operating 180° out-of-phase, selectable overcurrent protection on Channel 2 via ILIM2, ratiometric/sequential startup mode controlled by SEQ, and thermal shutdown at 148°C.
Technical Context
The TPS54286PWPR implements current-mode control with internal slope compensation and a fixed-frequency oscillator running at 1.2 MHz (divided to generate 600 kHz PWM on each channel). Its dual PWM outputs are inherently 180° out-of-phase, reducing input ripple current and easing EMI filtering requirements.
Each channel includes an independent transconductance error amplifier (gM = 30 µS), a 0.8-V ±1.5% reference, and pulse-by-pulse overcurrent protection. Startup sequencing is determined by the SEQ pin state-ratiometric (floating), sequential Output 2→1 (SEQ = BP), or sequential Output 1→2 (SEQ = GND)-with soft-start time fixed at 2.1 ms per channel.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching frequency | 600 kHz - Enables smaller magnetics and faster transient response vs. 300 kHz variant (TPS54283). |
| Input voltage range | 4.5 V to 28 V - Supports wide industrial and consumer DC bus inputs including 5 V, 12 V, and 24 V systems. |
| Output current per channel | Up to 2 A - Sustained continuous load capability per output, limited by thermal design and PCB copper area. |
| Feedback reference voltage | 0.8 V ±1.5% - Sets output regulation point; enables precise resistor-divider-based voltage setting (e.g., 3.3 V, 5 V, 1.2 V). |
| Overcurrent protection (CH1) | 3.0 A typical - Fixed current limit; protects against short-circuit and overload on Output 1 without external sensing. |
| Overcurrent protection (CH2) | Selectable: 1.5 A (ILIM2 = GND) or 3.0 A (ILIM2 = floating) - Allows asymmetric load optimization and component scaling. |
| Thermal shutdown threshold | 148°C - Triggers automatic shutdown to prevent permanent damage; hysteresis of 20°C ensures safe restart. |
Pinout & Package
TPS54286PWPR is housed in 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 electrical stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PVDD1 | Power input for CH1 high-side MOSFET | Supplies gate drive and conduction path for Output 1 only; bypass with ≥10-µF ceramic capacitor to GND. |
| PVDD2 | Main supply for control circuitry & CH2 MOSFET | Enables UVLO (turn-on at 4.1 V), powers EN1/EN2 pull-ups, and supplies Output 2; requires local 10-µF bypass. |
| BOOT1 / BOOT2 | Bootstrap supply for CH1/CH2 high-side gate drivers | Charged from BP during low-side conduction; requires 22–82-nF capacitor to respective SWx node. |
| SW1 / SW2 | Switching node outputs | Drives external inductor; high dv/dt node requiring snubber and careful layout to minimize ringing. |
| FB1 / FB2 | Voltage feedback inputs | Connect to resistor divider midpoint; regulates output to 0.8 V reference; internal compensation eliminates need for external RC network. |
| EN1 / EN2 | Active-low enable inputs | Pull ≤0.9 V to enable corresponding output; internal 6-µA pull-up to PVDD2 if floating; supports independent or coordinated startup. |
| SEQ | Startup sequencing mode selector | Configures ratiometric (floating), Output 2→1 (BP), or Output 1→2 (GND); determines timing relationship between outputs. |
| ILIM2 | Channel 2 overcurrent level select | Ground = 1.5 A limit; floating = 3.0 A limit; enables optimized component sizing for asymmetrical loads. |
| BP | 5.25-V regulated bootstrap supply | Bypass with 4.7–10-µF X7R/X5R ceramic capacitor; powers both BOOT1 and BOOT2 circuits. |
| GND | Signal and power ground | Must be connected to thermal pad; forms return path for all internal circuits and high-current switching paths. |
Key Features
| Feature | Design Value |
|---|---|
| Dual 100-mΩ high-side MOSFETs | Reduces conduction loss and eliminates need for external high-side switches; supports up to 2-A continuous output per channel. |
| 180° out-of-phase PWM outputs | Halves input ripple current magnitude and eases bulk capacitor sizing and EMI filter design in multi-rail systems. |
| Single-pin sequencing (SEQ) | Eliminates external logic or timers for ratiometric or sequential startup-critical for FPGA, DSP, and SoC power sequencing. |
| Internal compensation | Removes requirement for external Type II/III compensation network; simplifies design and improves production consistency. |
| 2.1-ms internal soft start | Prevents inrush current and output overshoot; ramp rate scales with final output voltage, ensuring synchronized regulation entry. |
| Thermal shutdown with hysteresis | 148°C trip + 20°C hysteresis prevents thermal cycling; allows safe recovery after fault removal without manual reset. |
Applications
| Digital TV Power Supply | Set-Top Box Core Logic |
|---|---|
|
Use Scenario: Dual-rail power for main SoC (1.2 V core) and video processing ASIC (3.3 V I/O) in HD digital TV platforms. IC Role / Device Role / Timing Role: Primary dual-output DC/DC regulator providing independently enabled, sequenced, and current-limited rails. Use Value: SEQ pin enables ratiometric startup to meet SoC power-up timing specs; 600 kHz operation minimizes inductor size in space-constrained chassis. |
Use Scenario: Power management for ARM-based STB processors requiring strict 1.1 V core and 1.8 V memory rail sequencing. IC Role / Device Role / Timing Role: Dual buck controller delivering tightly coupled voltage rails with programmable startup order and soft-start synchronization. Use Value: ILIM2 pin allows 1.5-A limit on memory rail while maintaining 3-A capability on core rail-optimizing BOM cost and thermal margin. |
| DSP Board Power | Consumer Electronics Hub |
|
Use Scenario: Compact power solution for TI C6000-series DSP evaluation boards needing 1.4 V core and 3.3 V peripheral rails. IC Role / Device Role / Timing Role: Integrated dual converter replacing discrete controllers and MOSFETs; supports independent EN1/EN2 for debug-mode rail control. Use Value: Internal 0.8-V reference and resistor-divider feedback enable precise voltage setting without trimming; HTSSOP package fits dense PCB layouts. |
Use Scenario: Multi-output power for smart speaker hubs integrating Wi-Fi SoC, audio codec, and flash memory. IC Role / Device Role / Timing Role: Single-chip dual regulator supplying 1.2 V SoC core, 3.3 V interface, and 5 V USB peripheral rail (via external LDO). Use Value: 4.5–28 V input range accommodates wide-input wall adapters and PoE-derived supplies; thermal pad ensures reliability under sustained 2-A loads. |
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 |
|---|---|---|---|
| TPS54283PWPR | 300 kHz switching frequency; identical pinout, package, and feature set except lower fSW and no frequency-select option. | Better suited for noise-sensitive audio or RF subsystems where lower switching frequency reduces EMI risk. | Choose TPS54283PWPR when lower EMI and relaxed magnetics size outweigh need for higher efficiency or smaller inductors. |
| LM26420XMH/NOPB | 2.2-MHz fixed frequency, integrated 30-mΩ MOSFETs, separate COMP pins for external compensation, no SEQ or ILIM2 pins. | Designed for ultra-compact portable applications; lacks programmable sequencing and dual-level OCP. | Choose LM26420XMH/NOPB when board space is critical and sequencing is handled externally; not drop-in compatible due to different pin functions. |
Compared with TPS54286PWPR, TPS54283PWPR offers lower EMI at reduced switching frequency but larger passive components, while LM26420XMH/NOPB provides higher frequency and tighter integration but sacrifices sequencing flexibility and requires external loop tuning.
Availability
TPS54286PWPR is available at Aetrix Electronics and suitable for digital TV, set-top box, and DSP board designs requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for TPS54286PWPR 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 family was designed specifically for cost-sensitive, space-constrained dual-rail applications in consumer electronics-emphasizing integration, ease of use, and robust protection without external compensation.
FAQ
What is the switching frequency of the TPS54286PWPR?
The TPS54286PWPR operates at a fixed 600 kHz switching frequency, confirmed in the Electrical Characteristics table and device description. This is distinct from the TPS54283PWPR (300 kHz) and is factory-set-no external resistor or capacitor adjusts it. The 600 kHz frequency enables smaller inductors and capacitors compared to lower-frequency alternatives, improving power density in compact designs using the TPS54286PWPR.
How does the SEQ pin affect startup behavior in the TPS54286PWPR?
The SEQ pin on the TPS54286PWPR configures startup sequencing: floating enables ratiometric startup (both outputs rise simultaneously), tying to BP enables Output 2→1 sequential startup (~400 µs delay), and tying to GND enables Output 1→2 sequencing. This single-pin control replaces external timing circuitry and is validated in the Application Information section and Figure 17–19 of the datasheet. All modes use the same 2.1-ms soft-start ramp per channel.
Can the TPS54286PWPR support different input voltages for PVDD1 and PVDD2?
Yes-the TPS54286PWPR supports dual-supply operation where PVDD1 and PVDD2 may differ. PVDD2 powers the control circuitry and Output 2 MOSFET, while PVDD1 supplies only the Output 1 high-side switch. The datasheet explicitly states "The voltage on PVDD1 may be higher or lower than PVDD2" and confirms independent biasing. This allows flexible system-level power partitioning, such as using a dedicated 12-V rail for Output 1 and shared 5-V for control and Output 2 in the TPS54286PWPR.
What overcurrent protection options does the TPS54286PWPR provide for Channel 2?
The TPS54286PWPR provides two selectable overcurrent limits for Channel 2 via the ILIM2 pin: 1.5 A (when ILIM2 is tied to GND) or 3.0 A (when ILIM2 is left floating). This is documented in the Electrical Characteristics table under ICL2 and confirmed in the Terminal Functions section. Channel 1 has a fixed 3.0-A limit. This dual-level capability allows designers to optimize external inductor and capacitor ratings for asymmetrical loads without compromising fault protection in the TPS54286PWPR.
Is external compensation required when using the TPS54286PWPR?
No-external compensation is not required for the TPS54286PWPR. The device includes fully internal compensation, as stated in the Features list ("Internal Compensation") and confirmed in the Block Diagram and Application Information sections. The error amplifier and loop compensation components are integrated, eliminating the need for external RC networks on FB1/FB2. Designers must still select appropriate output LC filters per the Feedback Loop and L-C Filter Selection guidelines, but no external compensation components are needed for stable operation of the TPS54286PWPR.
TPS54286PWPR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-PowerTSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- 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
TPS54286PWPR FAQ
1.How can I place an order for TPS54286PWPR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS54286PWPR 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 TPS54286PWPR reliable?
The price and inventory of TPS54286PWPR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS54286PWPR is usually 5 days.
3.What payment methods are accepted for TPS54286PWPR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS54286PWPR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS54286PWPR?
TPS54286PWPR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS54286PWPR 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 TPS54286PWPR?
For technical support, including TPS54286PWPR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS54286PWPR requirements.
6.How does Aetrix verify that TPS54286PWPR is sourced from the original manufacturer or authorized distributors?
All TPS54286PWPR 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 TPS54286PWPR meets industry standards.
7.What is the process for return or replacement of TPS54286PWPR?
All TPS54286PWPR units undergo pre-shipment inspection (PSI). If there is an issue with TPS54286PWPR, 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 TPS54286PWPR part is unused and in its original packaging.
Return procedure for TPS54286PWPR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS54286PWPR Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
