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Texas Instruments TPS55287RYQR
- Part No.:
- TPS55287RYQR
- Manufacturer:
- Texas Instruments
- Package:
- 21-PowerVFQFN
- Datasheet:
-
TPS55287RYQR.pdf
- Description:
- IC REG BUCK BOOST PROG 4A 21VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,950
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Product details
Overview
TPS55287RYQR from Texas Instruments is a 4-A synchronous buck-boost DC/DC converter with integrated MOSFETs, I²C programmability, and USB PD PPS support. It operates from 3.0 V to 36 V input and delivers 0.8 V to 22 V output in 10-mV steps, with ±1% reference accuracy and ±5% current monitoring - enabling precise power rail generation in USB-C docking stations and wireless chargers.
For engineers reviewing the TPS55287RYQR datasheet, TPS55287RYQR pinout, TPS55287RYQR application, or TPS55287RYQR equivalent, key selection criteria include its 21-pin VQFN-HR (3.0 mm × 5.0 mm) package, average-current-mode control, 200 kHz–2.2 MHz programmable switching frequency, I²C register-based voltage/current configuration, and integrated cable droop compensation via CDC pin.
Technical Context
The TPS55287RYQR employs average current-mode control with an internal 11-bit DAC for reference voltage tuning, enabling seamless buck/boost/buck-boost mode transitions based on VIN–VOUT relationship. Its four-integrated-MOSFET architecture eliminates external switches while supporting up to 35 W from 12 V input in boost mode.
It features dual-mode light-load operation (programmable PFM or forced FPWM), optional spread-spectrum dithering (±7%), external clock synchronization via DITH/SYNC, and comprehensive protection including hiccup-mode short-circuit response, thermal shutdown at 175 °C, and 4-A average inductor current limit.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.0 V to 36 V - supports wide-input battery and adapter sources including USB PD 3.0 variable inputs. |
| Output Voltage Range | 0.8 V to 22 V in 10-mV steps - enables fine-grained PPS compliance and dynamic rail scaling. |
| Max Output Current | 4 A average inductor current - sustains high-power delivery in compact form factor without external current sense. |
| Switching Frequency | 200 kHz to 2.2 MHz - selectable via FSW resistor or external sync clock; enables EMI optimization and small passive sizing. |
| Reference Accuracy | ±1% - ensures stable output regulation across temperature and line/load variations. |
| I²C Interface | Standard/fast-mode plus (100–1000 kHz) - allows real-time voltage/current reconfiguration and fault reporting in system firmware. |
| Package | VQFN-HR (RYQ), 21-pin, 3.0 mm × 5.0 mm - HotRod™ leadless construction improves thermal performance and reduces parasitic inductance. |
Pinout & Package
VQFN-HR (RYQ) package, 21-pin, 3.0 mm × 5.0 mm body size, exposed thermal pad, RoHS-compliant, moisture sensitivity level (MSL) 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN/UVLO | Enable & programmable UVLO input | Logic-high enable; 1.23-V internal reference allows custom input undervoltage threshold with hysteresis. |
| MODE | I²C address select | Sets I²C target address to 0x74 or 0x75 - enables multi-device bus addressing on shared SCL/SDA lines. |
| SCL / SDA | I²C clock/data bidirectional | Supports full register read/write access for voltage, current limit, soft-start, and protection settings. |
| DITH/SYNC | Dithering control & sync input | Accepts external clock for frequency synchronization or capacitor for ±7% spread-spectrum EMI reduction. |
| FSW | Frequency setting | Resistor-to-ground sets switching frequency from 200 kHz to 2.2 MHz - no external oscillator required. |
| VIN / VOUT / SW1 / SW2 | Main power terminals | Four-switch buck-boost topology: SW1 (buck node), SW2 (boost node), VIN (input), VOUT (output). |
| ISP / ISN | Current sense differential inputs | Enables output current limiting and monitoring; supports 50-mA step programmable current limit via register. |
| CDC | Cable droop compensation output | Provides proportional voltage to compensate for IR drop across USB cables - improves load regulation at remote devices. |
| FB/INT | Feedback input / fault indicator | Configurable as external feedback node or open-drain fault signal (OVP, thermal, current limit). |
| COMP | Error amplifier output | Connects to RC network for loop compensation - simplifies stability design in current-mode architecture. |
Key Features
| Feature | Design Value |
|---|---|
| USB PD PPS Support | Full compliance via I²C-programmable 0.8–22 V output (10-mV steps) and 50-mA-step current limit - meets USB PD 3.0 specification for adaptive charging. |
| Integrated Four-Switch Topology | Eliminates need for external MOSFETs and gate drivers - reduces BOM count, layout area, and design risk in space-constrained applications. |
| Cable Droop Compensation | CDC pin outputs voltage proportional to output current, enabling active IR-drop correction - maintains tight regulation at end-device connector. |
| Programmable Light-Load Mode | Selectable PFM or forced FPWM operation - balances efficiency (PFM) and noise/EMI control (FPWM) based on system requirements. |
| Comprehensive Protection Suite | Includes output OVP (23.5 V trip), hiccup-mode short-circuit response, thermal shutdown (175 °C), and cycle-by-cycle peak current limiting - ensures robust field operation. |
Applications
| Wireless Charger Power Stage | USB-C Docking Station |
|---|---|
Use Scenario: Delivers dynamically adjustable 5–20 V output to Qi-compatible transmitter coils and auxiliary ports under varying input conditions (9–20 V adapter or battery). IC Role / Device Role / Timing Role: Primary buck-boost regulator managing power conversion, voltage negotiation, and current limiting via I²C during PD contract establishment. Use Value: Enables single-chip PPS compliance with ±1% output accuracy and real-time current monitoring - eliminates need for secondary microcontroller-based regulation. | Use Scenario: Powers multiple peripherals (HDMI, USB-A, Ethernet, SSD) from a single USB-C PD input, requiring independent 3.3 V, 5 V, and 12 V rails. IC Role / Device Role / Timing Role: Main PD sink-side buck-boost controller handling voltage negotiation, cable compensation, and overcurrent protection per port. Use Value: Supports simultaneous multi-rail generation with <10-mV output granularity and integrated cable droop correction - improves end-device voltage margin by up to 750 mV. |
| Industrial PC Power Management | Portable Monitor Power Supply |
Use Scenario: Supplies regulated 12 V and 19 V rails to CPU, display, and storage subsystems in fanless IPCs operating from wide-range 12–36 V DC inputs. IC Role / Device Role / Timing Role: High-efficiency intermediate bus converter with programmable UVLO and thermal management for extended ambient temperature operation. Use Value: Delivers >96% efficiency at 1.5 A (12 V out, 12 V in) and withstands 125 °C junction temperature - extends product lifetime in sealed enclosures. | Use Scenario: Powers 10–15 W LCD panels and touch controllers in battery-powered monitors using USB-C PD input with variable source voltage (5–20 V). IC Role / Device Role / Timing Role: Adaptive output regulator maintaining constant panel brightness and contrast despite input voltage sag or cable resistance. Use Value: CDC-driven cable compensation maintains ±1% VOUT accuracy at display connector - prevents backlight flicker and color shift during high-current bursts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck-boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2965GQ-Z | 4-A, 36-V buck-boost with PMBus interface; no integrated cable compensation; 20-pin QFN (4×4 mm) | Lacks CDC pin and programmable droop compensation; requires external circuitry for USB PD PPS compliance | Choose when PMBus compatibility and higher integration of telemetry (voltage/current/temp) outweigh need for native cable compensation. |
| ISL81601IRZ-T7A | 4-A, 60-V buck-boost with analog/PMBus hybrid interface; larger 32-pin QFN (5×5 mm); no I²C-only mode | Higher input rating suits industrial 48-V systems but lacks dedicated USB PD register map and PPS timing compliance features | Prefer for 48-V battery systems where extended input range and dual-interface flexibility justify larger footprint and firmware complexity. |
Compared with MP2965GQ-Z and ISL81601IRZ-T7A, the TPS55287RYQR uniquely integrates USB PD PPS-specific functions - including 10-mV-step voltage control, CDC-based cable compensation, and I²C register mapping aligned to USB PD spec - within a smaller 3.0×5.0-mm HotRod™ package optimized for thermal performance in portable designs.
Availability
TPS55287RYQR is available at Aetrix Electronics and suitable for USB-C docking stations, wireless charging transmitters, and portable monitor power supplies requiring stable component supply, long-term lifecycle support, and full USB PD 3.0 PPS compliance.
Supply support for TPS55287RYQR 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 ICs, with decades of expertise in high-efficiency DC/DC conversion and USB power delivery solutions.
The TPS55287RYQR belongs to TI's USB PD-compliant buck-boost portfolio, designed specifically for compact, high-density power adapters, docks, and portable electronics requiring programmable, low-noise, thermally efficient power conversion.
FAQ
What is the maximum output power capability of the TPS55287RYQR?
The TPS55287RYQR delivers up to 35 W from a 12 V input in boost mode and 25 W from a 9 V input, enabled by its 4-A average inductor current limit and low RDS(on) MOSFETs (11–22 mΩ). Actual output power depends on thermal design, PCB layout, and ambient conditions - typical efficiency exceeds 96.7% at 1.5 A, 20 V output with 12 V input.
Does the TPS55287RYQR support USB Power Delivery Programmable Power Supply (PPS)?
Yes, the TPS55287RYQR natively supports USB PD PPS through its I²C interface, allowing 0.8 V to 22 V output programming in 10-mV increments and 50-mA-step output current limiting. Its CDC pin provides active cable droop compensation, and internal registers align with USB PD 3.0 specification requirements for adaptive voltage/current control.
How is output voltage accuracy maintained across temperature and load in the TPS55287RYQR?
The TPS55287RYQR achieves ±1% reference voltage accuracy over –40°C to 125°C via a trimmed internal bandgap and 11-bit DAC-controlled feedback path. Measured VREF drift is less than ±0.5% across temperature, and load regulation is enhanced by average current-mode control and optional external feedback with precision resistors.
Can the TPS55287RYQR operate without an external microcontroller?
Yes, the TPS55287RYQR can operate in standalone mode using fixed register defaults: output voltage set to 5 V, current limit at 3 A, FPWM mode, and internal feedback. However, full USB PD PPS functionality, cable compensation, and dynamic reconfiguration require I²C communication with a host microcontroller or PD controller.
What thermal performance can be expected from the TPS55287RYQR in a standard 4-layer PCB layout?
In a standard 4-layer 2-oz copper evaluation board (TPS55287Q1EVM-085), the TPS55287RYQR achieves RθJA = 27.5°C/W. At 4 A load and 12 V input/20 V output, junction temperature rise is approximately 75°C above ambient - well within the 125°C max operating limit. The exposed thermal pad must be soldered to a solid copper pour for optimal performance.
TPS55287RYQR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 21-PowerVFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up/Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck-Boost
- Output Type:
- Programmable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3V
- Voltage - Input (Max):
- 36V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 22V
- Current - Output:
- 4A
- Frequency - Switching:
- 200kHz ~ 2.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 21-VQFN-HR (3x5)
TPS55287RYQR FAQ
1.How can I place an order for TPS55287RYQR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS55287RYQR 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 TPS55287RYQR reliable?
The price and inventory of TPS55287RYQR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS55287RYQR is usually 5 days.
3.What payment methods are accepted for TPS55287RYQR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS55287RYQR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS55287RYQR?
TPS55287RYQR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS55287RYQR 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 TPS55287RYQR?
For technical support, including TPS55287RYQR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS55287RYQR requirements.
6.How does Aetrix verify that TPS55287RYQR is sourced from the original manufacturer or authorized distributors?
All TPS55287RYQR 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 TPS55287RYQR meets industry standards.
7.What is the process for return or replacement of TPS55287RYQR?
All TPS55287RYQR units undergo pre-shipment inspection (PSI). If there is an issue with TPS55287RYQR, 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 TPS55287RYQR part is unused and in its original packaging.
Return procedure for TPS55287RYQR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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