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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - DC DC Switching Regulators

Texas Instruments TPS55289RYQR

Name: TPS55289RYQR
Brand: Texas Instruments
SKU: TPS55289RYQR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TPS55289RYQR

Manufacturer:: Texas Instruments

Category:: Voltage Regulators - DC DC Switching Regulators

Package:: 21-PowerVFQFN

Datasheet:: TPS55289RYQR.pdf

Description:: IC REG BUCK BST ADJ 6.35A 21VQFN

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Product details

Overview

TPS55289RYQR from Texas Instruments is a synchronous 4-switch buck-boost DC/DC converter optimized for USB Power Delivery (USB PD) programmable power supply (PPS) applications. It delivers up to 8 A average inductor current, supports 3.0–30 V input and 0.8–22 V output with 10-mV programmability via I²C, and integrates four MOSFETs in a 3.0 mm × 5.0 mm HotRod™ QFN package for compact high-power density designs.

For engineers reviewing the TPS55289RYQR datasheet, TPS55289RYQR pinout, TPS55289RYQR application, or TPS55289RYQR equivalent, key selection considerations include its I²C-programmable output voltage/current limits, ±1% reference accuracy, 200 kHz–2.2 MHz adjustable switching frequency, spread-spectrum EMI reduction, and integrated cable droop compensation for USB PD compliance.

Technical Context

The TPS55289RYQR employs average current-mode control with an internal 11-bit DAC to set output voltage from 0.8 V to 22 V in 10-mV steps. Its four-MOSFET architecture enables seamless mode transitions-buck, buck-boost, or boost-based on VIN vs. VOUT relationship, ensuring stable regulation across wide input/output ratios.

It features dual current-limit protection: 8-A average inductor current limit and cycle-by-cycle peak current limiting (13 A typical), plus hiccup-mode short-circuit response with 76-ms off-time. The I²C interface (100–1000 kHz) supports full register access for real-time configuration of voltage, current limit, switching frequency, spread spectrum, and fault reporting via FB/INT pin.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	3.0 V to 30 V - supports single-cell Li-ion to 24-V industrial rails and USB PD adapter inputs.
Output Voltage Range	0.8 V to 22 V in 10-mV steps - enables precise PPS compliance and dynamic voltage scaling for diverse loads.
Max Output Current	8 A average inductor current - sustains high-power delivery (e.g., 60 W at 12 V_IN/20 V_OUT) without external current sense.
Switching Frequency	200 kHz to 2.2 MHz - selectable via resistor or external sync clock; higher frequencies enable smaller magnetics and footprint.
Reference Accuracy	±1% - ensures tight output regulation critical for USB PD specification compliance and system-level power integrity.
I²C Interface	Standard/fast-mode plus (100–1000 kHz) - enables host MCU-based dynamic reconfiguration and telemetry (voltage, current, faults).
Thermal Shutdown	175°C with 20°C hysteresis - protects against sustained overload while allowing recovery without manual reset.
Package	21-pin VQFN-HR (RYQ), 3.0 mm × 5.0 mm - HotRod™ leadless construction minimizes parasitic inductance and improves thermal performance.

Pinout & Package

TPS55289RYQR is housed in a 21-pin VQFN-HR (RYQ) package measuring 3.0 mm × 5.0 mm with exposed thermal pad. The leadless HotRod™ construction reduces switching loop inductance and enhances thermal dissipation.

Pin/Terminal	Circuit Role	Design Meaning
EN/UVLO	Enable & programmable UVLO input	Logic-high enables operation; internal 1.23-V reference allows custom input undervoltage lockout with hysteresis.
MODE	I²C address select	Configures I²C target address as 0x74 (high) or 0x75 (low) - enables multiple devices on same bus.
SCL / SDA	I²C clock/data bidirectional	Supports full register read/write for real-time voltage/current/frequency configuration and fault monitoring.
DITH/SYNC	Dither control & external sync input	Capacitor sets spread-spectrum dither; external clock synchronizes switching to avoid EMI interference.
FSW	Frequency setting input	Resistor-to-ground programs switching frequency from 200 kHz to 2.2 MHz - enables layout-optimized frequency choice.
VIN / VOUT / SW1 / SW2	Main power terminals	VIN accepts 3–30 V; VOUT delivers 0.8–22 V; SW1/SW2 are internal buck/boost switching nodes - require low-ESR ceramic caps and proper layout.
ISP / ISN	Current sense differential inputs	Optional external sense resistor enables programmable output current limit (up to 6.35 A in 50-mA steps) and cable droop compensation.
FB/INT	Feedback input / fault indicator	Internal feedback mode uses this pin as open-drain fault flag (low on OVP, thermal shutdown, or short circuit).
COMP	Error amplifier output	Connects to external RC network for loop compensation - enables stability tuning across load and input conditions.
BOOT1 / BOOT2	High-side gate drivers	Require 0.1-µF ceramic caps to SW1/SW2 - ensure robust gate drive for integrated buck/boost high-side MOSFETs.
PGND / AGND	Power & signal ground	Separate grounds minimize noise coupling; must be connected under IC with low-inductance path to thermal pad.

Key Features

Feature	Design Value
USB PD PPS Compliance	Full support via I²C-programmable 0.8–22 V output (10-mV step) and 0–6.35 A current limit (50-mA step), with ±5% current monitoring accuracy.
Cable Droop Compensation	Integrated CDC pin outputs voltage proportional to ISP–ISN sense voltage - enables automatic VOUT boost to offset IR drop across USB cables.
EMI Reduction	Programmable spread spectrum (±7%) and external clock synchronization - lowers peak radiated emissions without sacrificing efficiency.
Light-Load Efficiency	Selectable PFM or forced FPWM mode - maintains >85% efficiency at 1-mA load while minimizing standby power (760 µA quiescent).
Robust Protection Suite	Includes output overvoltage (22.5–24.5 V), hiccup-mode short-circuit, thermal shutdown (175°C), and cycle-by-cycle peak current limiting.
Compact High-Power Design	3.0 mm × 5.0 mm HotRod™ QFN with integrated 4-MOSFET power stage - eliminates external switches and reduces BOM count by ≥6 components.

Applications

Wireless Charging Transmitter	USB PD Power Adapter
Use Scenario: Delivers dynamically adjustable 5–20 V output to Qi-compliant wireless power transmitters requiring precise voltage control per device negotiation. IC Role / Device Role: Primary regulated DC/DC stage converting AC-DC adapter output or battery voltage into programmable USB PD-compliant rail. Use Value: Enables single-hardware design supporting multiple charging profiles (e.g., 5 V/3 A, 9 V/3 A, 15 V/3 A, 20 V/3 A) via I²C commands - eliminating discrete voltage-select resistors.	Use Scenario: Powers USB-C ports in multi-port wall adapters or travel chargers delivering up to 60 W with PPS support for fast-charging smartphones. IC Role / Device Role: Core buck-boost regulator implementing USB PD 3.0 Programmable Power Supply profile with real-time voltage/current adjustment. Use Value: Achieves ±1% output accuracy and <100-µs transient response to PPS requests - meeting USB-IF compliance requirements without external DAC or op-amps.
Docking Station Power Hub	Industrial PC Power Rail
Use Scenario: Supplies variable 12–20 V rails to USB-C-connected peripherals (monitors, SSDs, Ethernet) in laptop docking stations with shared power budgeting. IC Role / Device Role: Central programmable power manager coordinating voltage assignment across multiple downstream ports based on negotiated PD contracts. Use Value: Uses I²C to receive host CPU commands and adjust VOUT in <1-ms steps - enabling intelligent power allocation and thermal management across subsystems.	Use Scenario: Generates stable 12 V or 5 V auxiliary rails from wide-range 9–36 V industrial input (e.g., 24 V nominal) in fanless IPCs with strict EMI limits. IC Role / Device Role: High-efficiency, spread-spectrum-enabled buck-boost converter replacing traditional two-stage (buck + boost) solutions. Use Value: 96% peak efficiency at 12 V_IN/20 V_OUT/3 A and 2.2 MHz operation allow use of 4.7 µH inductor and small 1210 MLCCs - reducing board area by 35% vs. legacy designs.

Wireless Charging Transmitter

USB PD Power Adapter

Use Scenario: Delivers dynamically adjustable 5–20 V output to Qi-compliant wireless power transmitters requiring precise voltage control per device negotiation.

IC Role / Device Role: Primary regulated DC/DC stage converting AC-DC adapter output or battery voltage into programmable USB PD-compliant rail.

Use Value: Enables single-hardware design supporting multiple charging profiles (e.g., 5 V/3 A, 9 V/3 A, 15 V/3 A, 20 V/3 A) via I²C commands - eliminating discrete voltage-select resistors.

Use Scenario: Powers USB-C ports in multi-port wall adapters or travel chargers delivering up to 60 W with PPS support for fast-charging smartphones.

IC Role / Device Role: Core buck-boost regulator implementing USB PD 3.0 Programmable Power Supply profile with real-time voltage/current adjustment.

Use Value: Achieves ±1% output accuracy and <100-µs transient response to PPS requests - meeting USB-IF compliance requirements without external DAC or op-amps.

Docking Station Power Hub

Industrial PC Power Rail

Use Scenario: Supplies variable 12–20 V rails to USB-C-connected peripherals (monitors, SSDs, Ethernet) in laptop docking stations with shared power budgeting.

IC Role / Device Role: Central programmable power manager coordinating voltage assignment across multiple downstream ports based on negotiated PD contracts.

Use Value: Uses I²C to receive host CPU commands and adjust VOUT in <1-ms steps - enabling intelligent power allocation and thermal management across subsystems.

Use Scenario: Generates stable 12 V or 5 V auxiliary rails from wide-range 9–36 V industrial input (e.g., 24 V nominal) in fanless IPCs with strict EMI limits.

IC Role / Device Role: High-efficiency, spread-spectrum-enabled buck-boost converter replacing traditional two-stage (buck + boost) solutions.

Use Value: 96% peak efficiency at 12 V_IN/20 V_OUT/3 A and 2.2 MHz operation allow use of 4.7 µH inductor and small 1210 MLCCs - reducing board area by 35% vs. legacy designs.

Equivalent & Alternatives

The following parts are listed as comparable options for similar buck-boost converter applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MPQ4282GQ-A	4-A max output, no I²C interface, fixed 500-kHz switching, no cable droop compensation.	Suitable for cost-sensitive, non-PPS applications where voltage is set by resistor divider and current limit is fixed.	Choose MPQ4282GQ-A when USB PD PPS, real-time current limiting, or programmable EMI reduction are not required.
RTQ2132BGQW	6-A output, I²C interface, but only 0.6–18 V output range and no integrated spread spectrum or CDC pin.	Meets basic USB PD 3.0 voltage programming but lacks cable compensation and advanced EMI features needed for Class-B compliance.	Choose RTQ2132BGQW if VOUT ≤ 18 V suffices and external droop compensation circuitry can be added.

Compared with MPQ4282GQ-A and RTQ2132BGQW, the TPS55289RYQR uniquely combines 8-A capability, full USB PD PPS register control, integrated cable droop compensation, and programmable spread spectrum - making it the only single-chip solution qualified for high-power, EMI-sensitive, field-upgradable USB PD endpoints.

Availability

TPS55289RYQR is available at Aetrix Electronics and suitable for USB PD power adapters, wireless charging transmitters, docking stations, and industrial PCs requiring stable component supply, long-term lifecycle support, and production-ready qualification.

Supply support for TPS55289RYQR 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 automotive, industrial, and computing design expertise.

The TPS55289RYQR belongs to TI's USB PD–optimized buck-boost converter family, engineered specifically to replace discrete switcher+MCU combinations in space-constrained, high-efficiency USB-C power delivery systems.

FAQ

What is the maximum output power capability of the TPS55289RYQR?

The TPS55289RYQR delivers up to 60 W - for example, 3 A at 20 V from a 12-V input - leveraging its 8-A average inductor current limit and high-efficiency 4-switch architecture. Peak power depends on thermal design, input voltage, and PCB copper area; derating applies above 85°C ambient. The TPS55289RYQR datasheet specifies 96% efficiency at 12 V_IN/20 V_OUT/3 A, confirming its suitability for high-density USB PD applications.

Does the TPS55289RYQR support USB Power Delivery Programmable Power Supply (PPS)?

Yes, the TPS55289RYQR fully supports USB PD PPS through its I²C interface: output voltage is programmable from 0.8 V to 22 V in 10-mV steps, and output current limit is adjustable from 0 A to 6.35 A in 50-mA increments. Its ±1% reference accuracy, ±5% current monitoring, and integrated cable droop compensation meet USB-IF PPS specification requirements - all implemented without external DACs or op-amps.

How does the TPS55289RYQR handle thermal management during sustained high-current operation?

The TPS55289RYQR incorporates thermal shutdown at 175°C with 20°C hysteresis and supports continuous operation up to 125°C junction temperature. Its 3.0 mm × 5.0 mm VQFN-HR package features an exposed thermal pad; TI recommends ≥4 thermal vias to inner ground planes and ≥1-in² 2-oz copper pour for optimal heat dissipation. The TPS55289RYQR EVM achieves R_θJA = 27.5°C/W with 4-layer board, enabling 8-A operation at 25°C ambient with proper layout.

Can the TPS55289RYQR operate without an external microcontroller?

Yes - the TPS55289RYQR supports standalone operation using resistor-programmed settings: output voltage can be set via external feedback divider (using FB/INT pin), switching frequency via FSW resistor, and I²C address via MODE pin. However, full PPS functionality, real-time current limiting, spread spectrum control, and fault telemetry require I²C communication with a host MCU. The TPS55289RYQR remains fully functional in fixed-output mode without firmware.

What protection features are integrated into the TPS55289RYQR?

The TPS55289RYQR integrates output overvoltage protection (22.5–24.5 V trip), hiccup-mode short-circuit response (76-ms off-time), thermal shutdown (175°C), 8-A average inductor current limit, and cycle-by-cycle peak current limiting (13 A typical). It also provides EN/UVLO with programmable hysteresis and soft-start (2.5–5 ms) to prevent inrush current. All protections are hardware-based and active without I²C communication - ensuring fail-safe behavior even during firmware failure.

TPS55289RYQR 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:: Adjustable

Number of Outputs:: 1

Voltage - Input (Min):: 3V

Voltage - Input (Max):: 30V

Voltage - Output (Min/Fixed):: 0.8V

Voltage - Output (Max):: 22V

Current - Output:: 6.35A (Switch)

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)

TPS55289RYQR FAQ

1.How can I place an order for TPS55289RYQR through Aetrix?

Please submit a Request for Quotation (RFQ) for TPS55289RYQR 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 TPS55289RYQR reliable?

The price and inventory of TPS55289RYQR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS55289RYQR is usually 5 days.

3.What payment methods are accepted for TPS55289RYQR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS55289RYQR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TPS55289RYQR?

TPS55289RYQR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TPS55289RYQR 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 TPS55289RYQR?

For technical support, including TPS55289RYQR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS55289RYQR requirements.

6.How does Aetrix verify that TPS55289RYQR is sourced from the original manufacturer or authorized distributors?

All TPS55289RYQR 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 TPS55289RYQR meets industry standards.

7.What is the process for return or replacement of TPS55289RYQR?

All TPS55289RYQR units undergo pre-shipment inspection (PSI). If there is an issue with TPS55289RYQR, 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 TPS55289RYQR part is unused and in its original packaging.

Return procedure for TPS55289RYQR:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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