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Texas Instruments TPS552872RYQR
- Part No.:
- TPS552872RYQR
- Manufacturer:
- Texas Instruments
- Package:
- 21-PowerVFQFN
- Datasheet:
-
TPS552872RYQR.pdf
- Description:
- IC REG BUCK BST ADJ 2.5A 21VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,195
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Product details
Overview
TPS552872RYQR from Texas Instruments is a fully integrated 4-A synchronous buck-boost DC/DC converter with four internal MOSFETs, operating across 3.0 V to 36 V input and delivering 0.8 V to 22 V output. It features ±1% reference accuracy, average inductor current limit of 4 A, and programmable switching frequency from 200 kHz to 2.2 MHz. It is used in portable power delivery systems such as docking stations and power banks where wide VIN/VOUT range and compact solution size are critical.
For engineers reviewing the TPS552872RYQR datasheet, TPS552872RYQR pinout, TPS552872RYQR application, or TPS552872RYQR equivalent, key selection considerations include its average-current-mode control architecture, dual-mode (PFM/FPWM) light-load operation, cable droop compensation via CDC pin, ±5% current monitoring accuracy, and thermal shutdown at 175°C with 20°C hysteresis.
Technical Context
The TPS552872RYQR employs average current-mode control for stable loop response, inherent line rejection, and simplified compensation. Its four-MOSFET architecture enables seamless mode transitions-buck, buck-boost, and boost-based on real-time VIN/VOUT relationship, eliminating external mode-control logic.
It supports clock synchronization via DITH/SYNC pin and optional spread-spectrum dithering (±7%) to reduce EMI peaks. The device integrates an internal 5.2-V LDO for VCC, with EXTVCC pin enabling external 5-V supply selection to minimize LDO power loss under high-VIN/high-VOUT conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.0 V to 36 V - supports single-stage conversion from Li-ion battery packs, USB PD sources, or 12/24-V industrial rails without pre-regulation. |
| Output Voltage Range | 0.8 V to 22 V - programmable via FB resistor divider; enables direct generation of common system rails (e.g., 3.3 V, 5 V, 12 V, 15 V, 20 V). |
| Max Output Current | 4 A average inductor current limit - ensures robust operation under sustained load; peak current limits (6.5 A high-side, 6 A low-side) guard against transient overloads. |
| Reference Accuracy | ±1% at FB pin (1.2 V nominal) - guarantees tight output regulation across temperature (–40°C to +125°C) and line/load conditions. |
| Switching Frequency | 200 kHz to 2.2 MHz - set by external FSW resistor; higher frequencies enable smaller magnetics and capacitors (e.g., 4.7 µH inductor, 22 µF input cap). |
| Current Monitoring | ±5% accuracy - enables reliable output current limiting and telemetry; ISP/ISN pins support external sense resistor or direct connection for disable. |
| Cable Compensation | CDC pin provides proportional voltage (0.95–1.05 V at 50 mV sense) - allows active IR-drop compensation using RC network to maintain regulated voltage at remote load. |
Pinout & Package
TPS552872RYQR is housed in a 3.0-mm × 5.0-mm, 21-pin VQFN-HR (HotRod™ QFN) package with exposed thermal pad. The leadless construction reduces parasitic inductance and improves thermal performance (RθJA = 43.4°C/W standard, 27.5°C/W on EVM).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN/UVLO | Enable & programmable UVLO input | Logic-high (>1.15 V) enables IC; internal 1.23-V reference + 5-µA sourcing current enables resistor-divider-based input lockout threshold tuning. |
| MODE | Light-load mode select | High = forced PWM (low-noise, fixed-frequency); low = auto PFM (high efficiency at light loads); must not be left floating. |
| PG | Power-good open-drain output | Asserts high-Z when VOUT ≥ 95% of target; pulls low when VOUT ≤ 90% - enables system sequencing and fault indication. |
| ISP / ISN | Differential current sense inputs | Monitor output current via external sense resistor; trigger slow CC loop at 50-mV threshold (±2 mV tolerance) for precise constant-current regulation. |
| CDC | Cable droop compensation output | Sinks current proportional to ISP–ISN voltage; used with external resistor to inject correction into FB node and offset cable IR drop. |
| FB | Feedback input | Connects to mid-point of resistor divider; internal 1.2-V reference sets VOUT = 1.2 × (1 + R1/R2); leakage <100 nA minimizes divider error. |
| COMP | Error amplifier output | Drives external Type-II/III compensation network between COMP and AGND; transconductance = 190 µA/V; clamped at 0.6 V / 1.15 V in FPWM mode. |
| BOOT1 / BOOT2 | High-side gate drivers | Each requires 0.1-µF ceramic capacitor to respective SWx pin; enables efficient drive of internal buck/boost high-side MOSFETs. |
| VIN / VOUT / PGND / AGND | Power and signal grounds | Separate PGND (power return) and AGND (signal reference) minimize noise coupling; thermal pad must be soldered for thermal reliability. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 4-MOSFET buck-boost topology | Eliminates 4 external switches and associated gate-drive complexity; enables single-chip 36-V capable solution in 15-mm² footprint. |
| Programmable cable droop compensation | CDC pin delivers linear voltage proportional to output current, allowing precise remote-load regulation without feedback wire routing. |
| Configurable light-load operation | MODE pin selects between auto PFM (maximizes light-load efficiency) and forced PWM (ensures fixed frequency for EMI filtering predictability). |
| Spread-spectrum dithering | Reduces EMI peak amplitude by ±7% frequency modulation; enabled via capacitor on DITH/SYNC pin - no external clock required. |
| Hiccup-mode short-circuit protection | After OVP or overcurrent fault, device shuts down for 76 ms then soft-starts - prevents thermal runaway while enabling automatic recovery. |
Applications
| Docking Station Power Delivery | USB-C Power Bank |
|---|---|
Use Scenario: Supplies variable 5–20 V USB PD power to laptops and peripherals from single-cell or multi-cell battery input. IC Role / Device Role / Timing Role: Primary buck-boost regulator managing dynamic VBUS negotiation and load-step response. Use Value: Delivers up to 30 W from 12-V input and 25 W from 9-V input with >96% efficiency at 1.5–2 A, minimizing thermal stress in compact enclosures. | Use Scenario: Enables bidirectional charging and discharging in portable power banks supporting USB PD 3.0. IC Role / Device Role / Timing Role: Core voltage translator between battery pack (3–16 V) and USB-C VBUS (5–20 V). Use Value: Seamless buck/boost/buck-boost mode transitions maintain stable output during battery discharge without manual reconfiguration. |
| Monitor Internal Power Supply | Wireless Charging Transmitter |
Use Scenario: Generates 12-V and 5-V rails for display logic, backlight drivers, and interface circuitry from 19-V adapter or PoE-derived input. IC Role / Device Role / Timing Role: Main DC/DC converter providing isolated, regulated secondary rails with tight output accuracy. Use Value: ±1% reference and ±5% current monitoring ensure consistent backlight brightness and HDMI signal integrity across input voltage variation. | Use Scenario: Powers transmitter coil driver stage and MCU from varying input (e.g., 9–20 V USB PD or wall adapter). IC Role / Device Role / Timing Role: High-efficiency intermediate bus converter feeding variable-power wireless charging ICs. Use Value: 2.2-MHz max switching frequency allows use of small 4.7-µH inductor and low-ESR ceramic caps, reducing board area and acoustic noise. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck-boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS63802DLAR | 2.5-A max output, 2.5-V to 16-V input, fixed 5-V/3.3-V options or adjustable 0.8–5.5 V; lower current rating and narrower voltage range. | Targeted at low-power portable devices (earbuds, wearables); lacks cable compensation and spread spectrum. | Choose for cost-sensitive, sub-2-A applications where full 36-V capability and advanced features are unnecessary. |
| MP2918GQZ-0000-P | 4-A buck-boost, 3.3–36-V input, 0.8–24-V output; uses peak-current-mode control; no integrated CDC function or programmable UVLO. | Requires external circuitry for cable compensation; less accurate current sensing (±8%); no hiccup-mode short-circuit recovery. | Consider when TI ecosystem compatibility is not required and simpler control loop tuning is preferred over advanced telemetry features. |
Compared with TPS552872RYQR, TPS63802DLAR offers lower BOM count for basic 5-V rails but cannot replace it in 20-V output or 30-W docking station designs; MP2918GQZ-0000-P matches current rating and voltage range but lacks CDC-based droop compensation and precision 1.2-V reference, limiting remote-load regulation accuracy.
Availability
TPS552872RYQR is available at Aetrix Electronics and suitable for docking stations, power banks, and monitor internal power supplies requiring stable component supply, long-term lifecycle support, and production-ready qualification.
Supply support for TPS552872RYQR 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 DC/DC conversion.
The TPS552872RYQR belongs to TI's high-density buck-boost converter product line, designed specifically for portable and adapter-powered systems needing wide-input-range, high-efficiency, and feature-rich power delivery in minimal PCB area.
FAQ
What is the maximum supported switching frequency for the TPS552872RYQR?
The TPS552872RYQR supports a programmable switching frequency range from 200 kHz to 2.2 MHz, set by an external resistor on the FSW pin. At RFSW = 8.4 kΩ, the typical frequency is 2.2 MHz - enabling compact magnetic design with 4.7-µH inductors and low-profile ceramic capacitors in space-constrained applications like power banks and docking stations. The TPS552872RYQR maintains stable operation across this full range with minimal efficiency degradation.
How does the TPS552872RYQR implement cable voltage drop compensation?
The TPS552872RYQR uses its CDC pin to provide a voltage proportional to output current (e.g., 1.0 V at 50 mV ISP–ISN differential), which is fed into the FB node via an external resistor to counteract IR drop across cables. This closed-loop compensation ensures regulated voltage is maintained at the remote load, not just at the TPS552872RYQR output. The TPS552872RYQR's ±2 mV current-sense threshold tolerance and linear CDC transfer function enable <±1% droop correction accuracy.
Does the TPS552872RYQR support synchronization to an external clock source?
Yes, the TPS552872RYQR supports external clock synchronization via the DITH/SYNC pin. When an external clock signal with 1.2-V high threshold and 0.4-V low threshold is applied, the TPS552872RYQR locks its internal oscillator to that frequency - preventing beat frequencies and crosstalk in multi-rail systems. The TPS552872RYQR also supports optional spread-spectrum dithering (±7%) when a capacitor is connected to DITH/SYNC, further reducing EMI peaks without external clocking.
What protection features are integrated into the TPS552872RYQR?
The TPS552872RYQR integrates output overvoltage protection (OVP) with 23.5-V threshold and 1-V hysteresis, thermal shutdown at 175°C (20°C hysteresis), hiccup-mode short-circuit recovery (76-ms off time), and dual-level current limiting - 4-A average inductor current limit plus cycle-by-cycle peak limits (6.5 A high-side, 6 A low-side). These protections operate autonomously without host intervention, ensuring safe operation in unattended applications like wireless chargers and monitors.
Can the TPS552872RYQR operate with input voltage below the output voltage?
Yes, the TPS552872RYQR is a true buck-boost converter and operates seamlessly in boost mode when VIN < VOUT (e.g., 9-V input to 15-V output), in buck mode when VIN > VOUT (e.g., 24-V input to 5-V output), and in buck-boost mode when VIN ≈ VOUT. Its four-MOSFET architecture and average-current-mode control enable smooth, glitch-free transitions between modes without external supervision - a core capability confirmed in the TPS552872RYQR datasheet's functional description and typical application circuits.
TPS552872RYQR 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):
- 36V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 22V
- Current - Output:
- 2.5A
- Frequency - Switching:
- 200kHz ~ 2.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 21-VQFN-HR (3x5)
TPS552872RYQR FAQ
1.How can I place an order for TPS552872RYQR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS552872RYQR 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 TPS552872RYQR reliable?
The price and inventory of TPS552872RYQR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS552872RYQR is usually 5 days.
3.What payment methods are accepted for TPS552872RYQR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS552872RYQR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS552872RYQR?
TPS552872RYQR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS552872RYQR 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 TPS552872RYQR?
For technical support, including TPS552872RYQR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS552872RYQR requirements.
6.How does Aetrix verify that TPS552872RYQR is sourced from the original manufacturer or authorized distributors?
All TPS552872RYQR 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 TPS552872RYQR meets industry standards.
7.What is the process for return or replacement of TPS552872RYQR?
All TPS552872RYQR units undergo pre-shipment inspection (PSI). If there is an issue with TPS552872RYQR, 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 TPS552872RYQR part is unused and in its original packaging.
Return procedure for TPS552872RYQR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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