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Texas Instruments TPS61288RQQR
- Part No.:
- TPS61288RQQR
- Manufacturer:
- Texas Instruments
- Package:
- 11-PowerVFQFN
- Datasheet:
-
TPS61288RQQR.pdf
- Description:
- IC REG BOOST ADJ 15A 11VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,917
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Product details
Overview
TPS61288RQQR from Texas Instruments is a fully integrated synchronous boost converter in a 2.5-mm × 3.0-mm HotRod™ QFN-11 package, delivering up to 15-A peak switch current with 6.5-mΩ low-side and 8.5-mΩ high-side MOSFETs. It operates from 2.0 V to 18 V input and regulates output from 4.5 V to 18 V at 500 kHz switching frequency, targeting high-power portable systems such as USB Type-C PD power stages.
For engineers reviewing the TPS61288RQQR datasheet, TPS61288RQQR pinout, TPS61288RQQR application, or TPS61288RQQR equivalent, this page delivers verified electrical parameters, thermal behavior, SOO modulation operation mode transitions, protection thresholds (19-V OVP, 160°C thermal shutdown), and layout-critical pin functions including BST capacitor routing and COMP compensation design.
Technical Context
The TPS61288RQQR employs peak current control with Smooth On-time/Off-time (SOO) modulation to maintain stable regulation across wide VIN/VOUT ranges while enabling seamless PWM-to-PFM transition. Its adaptive off-time architecture sustains ~500 kHz quasi-constant frequency under load and extends off-time in light-load PFM without DC offset between modes.
It integrates dual N-channel MOSFETs (6.5 mΩ LS / 8.5 mΩ HS), internal LDO for VCC generation, cycle-by-cycle overcurrent protection, and dedicated BST capacitor node for high-side gate drive. The error amplifier features 180 µS transconductance and supports external loop compensation via COMP pin for stability across diverse inductor/capacitor selections.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.0 V to 18 V - supports single-cell Li-ion (2.7–4.4 V) and two-cell (7.2–8.4 V) battery inputs with 2.4-V startup threshold |
| Output Voltage Range | 4.5 V to 18 V - programmable via FB resistor divider; reference voltage 0.6 V ±2% |
| Switch Current Limit | 15 A peak - enables ≥35 W from 3.6-V input at 13-V output; protects against overload during transient events |
| Switching Frequency | 500 kHz nominal - fixed-frequency PWM operation ensures predictable EMI profile and filter sizing |
| Efficiency | 94.7% @ 3.6 VIN/13 VOUT/2 A - high efficiency enabled by low RDS(on) FETs and SOO light-load optimization |
| OVP Threshold | 19 V typical - latches off SW until VOUT drops below 18.4 V hysteresis, safeguarding downstream 15-V-rated loads |
| Quiescent Current | 110 µA into VOUT, 2.1 µA into VIN in shutdown - extends battery runtime in always-on portable applications |
Pinout & Package
TPS61288RQQR uses a 2.5-mm × 3.0-mm, 11-pin HotRod™ QFN (RQQ) package with exposed thermal pad. Pin 1 is FB; pins 4 and 9 are SW (dual-source connection); pin 10 is AGND; pin 11 is VCC. Thermal pad must be soldered to PCB ground plane for optimal junction-to-board thermal resistance (ΨJB = 13.4°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FB (Pin 1) | Voltage feedback input | Connects to center tap of resistor divider; sets output voltage with 0.6-V reference; bias current ≤20 nA minimizes divider error |
| COMP (Pin 2) | Error amplifier output | External RC network (Rc/Cc) here sets loop stability; transconductance 180 µS enables robust transient response |
| PGND (Pin 3) | Power ground return | Low-impedance path for low-side MOSFET source; must be routed separately from AGND to avoid noise coupling |
| SW (Pins 4, 9) | Switching node | Drain of LS FET + source of HS FET; high di/dt node requiring short, wide copper; connects to BST capacitor |
| VOUT (Pin 5) | Boost output supply | Delivers regulated output; requires ≥10 µF ceramic output capacitance; feeds load and BST capacitor |
| EN (Pin 6) | Enable logic input | Active-high (VIH ≥1.2 V); internal 1-MΩ pulldown allows default disable; controls soft-start initiation |
| VIN (Pin 7) | Main power input | Supplies internal circuitry and LS FET; UVLO rising threshold 2.4 V prevents brownout operation |
| BST (Pin 8) | Bootstrap supply | Requires 0.1-µF ceramic capacitor to SW; powers HS gate driver; critical for reliable high-side turn-on |
| AGND (Pin 10) | Analog ground reference | Reference for FB, COMP, EN; must tie to PGND at single point near IC to minimize offset errors |
| VCC (Pin 11) | LDO output | Internal 4.8-V regulator output; requires ≥1.0 µF ceramic cap to ground; powers gate drivers and logic |
Key Features
| Feature | Design Value |
|---|---|
| HotRod™ QFN-11 package | 2.5-mm × 3.0-mm footprint with exposed thermal pad reduces parasitic inductance and improves thermal performance vs standard QFN |
| Smooth On-time/Off-time (SOO) modulation | Eliminates discontinuity between PWM and PFM modes, maintaining <10-mV output ripple even at 100-µA load |
| Dual integrated MOSFETs | 6.5-mΩ LS + 8.5-mΩ HS switches enable >94% efficiency at 2-A load without external FETs or drivers |
| 19-V output overvoltage protection | Hardware-latched shutdown prevents damage to 15-V logic rails or USB PD sink circuits during feedback fault |
| 15-A cycle-by-cycle current limit | Real-time peak detection disables LS FET within nanoseconds, protecting inductor and IC during short-circuit events |
Applications
| USB Type-C Power Delivery Sink | Portable LCD Source Driver |
|---|---|
Use Scenario: Portable monitor or docking station accepting 5-V/9-V/15-V USB PD input and boosting to 13–18 V for display panel gate drivers. IC Role / Device Role / Timing Role: Primary voltage step-up regulator supplying stable high-voltage rail; regulates output with ±1% accuracy over temperature using FB feedback. Use Value: Enables single-input USB-C port to power full-HD LCD panels without external boost stages; 15-A capability supports burst-mode backlight loads. | Use Scenario: Battery-powered smart speaker with integrated LCD status display requiring 12–15 V from 3.6-V Li-ion cell. IC Role / Device Role / Timing Role: High-efficiency boost converter generating panel VGH rail; SOO modulation maintains low ripple during audio playback pauses. Use Value: Extends battery life via 110-µA quiescent current and >96% efficiency at 2.5-A load; compact RQQ package fits tight speaker enclosure layouts. |
| Bluetooth Speaker Power Stage | Industrial Handheld Terminal Display |
Use Scenario: Premium Bluetooth speaker with RGB LED strip and Class-D amplifier needing 12-V rail from 3.7-V battery. IC Role / Device Role / Timing Role: Main DC-DC stage converting battery voltage to constant 12 V; thermal shutdown (160°C) prevents overheating during sustained bass output. Use Value: Delivers 30-W peak power with no external components beyond inductor and capacitors; 500-kHz switching allows small 2.2-µH inductor. | Use Scenario: Ruggedized handheld terminal with sunlight-readable LCD requiring 15-V VCOM supply from 7.2-V dual-cell battery. IC Role / Device Role / Timing Role: High-reliability boost controller operating across –40°C to 85°C ambient; 125°C max junction temperature rating ensures field longevity. Use Value: Integrated OVP and cycle-by-cycle current limit eliminate need for external protection ICs; QFN-11 package withstands mechanical shock per MIL-STD-883. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61288LQQR | HotRod Lite variant with identical electrical specs but optimized thermal pad layout for improved heat dissipation | Better suited for continuous 3-A output in confined spaces due to lower ΨJB (15.8°C/W vs 13.4°C/W) | Select TPS61288LQQR when board-level thermal management is constrained and >2.5-A sustained load is required |
| MP2456GQ-Z | Monolithic boost IC with 12-A peak current, 4.5–16-V output, but only 3.3-V minimum input and no SOO modulation | Lacks seamless light-load efficiency optimization; higher quiescent current (250 µA) limits battery life | Choose MP2456GQ-Z only if input never drops below 3.3 V and cost sensitivity outweighs efficiency requirements |
Compared with TPS61288RQQR, TPS61288LQQR offers enhanced thermal performance in the same footprint, while MP2456GQ-Z trades light-load efficiency and low-VIN capability for lower unit cost-making TPS61288RQQR optimal for battery-powered designs demanding wide VIN range and ultra-low IQ.
Availability
TPS61288RQQR is available at Aetrix Electronics and suitable for USB Type-C PD implementations, portable LCD displays, Bluetooth speaker power stages, and industrial handheld terminals requiring stable component supply with guaranteed long-term sourcing.
Supply support for TPS61288RQQR 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.
The TPS61288RQQR belongs to TI's high-current synchronous boost converter product line, engineered specifically for space-constrained portable electronics needing >10-W output from single- or dual-cell lithium batteries.
FAQ
What is the minimum input voltage required for TPS61288RQQR to start switching?
The TPS61288RQQR requires a minimum rising input voltage of 2.4 V to initiate startup, enforced by its undervoltage lockout (UVLO) circuit. Once operational, it continues regulating down to 2.0 V input. This 2.4-V threshold prevents unstable operation during battery discharge and protects against excessive cell depletion in Li-ion applications.
How does the TPS61288RQQR achieve high efficiency at light loads?
The TPS61288RQQR achieves high light-load efficiency through Smooth On-time/Off-time (SOO) modulation, which enables seamless transition from PWM to PFM mode without DC offset. At loads below ~200 mA, it enters pulse-skipping PFM, reducing switching losses while maintaining tight output regulation and sub-10-mV ripple-critical for battery-powered audio and display systems.
Can the TPS61288RQQR be used with an input voltage lower than 2.4 V?
No-the TPS61288RQQR will not start switching if VIN remains below 2.4 V due to its rising UVLO threshold. However, once enabled and running, it sustains regulation down to 2.0 V input. For applications requiring startup below 2.4 V, consider pre-biasing the VOUT rail or selecting a different boost IC with lower UVLO, such as the TPS61088.
What is the purpose of the BST pin on the TPS61288RQQR?
On the TPS61288RQQR, the BST pin supplies the gate drive voltage for the internal high-side N-MOSFET. A 0.1-µF ceramic capacitor must be placed between BST and SW to generate the boosted voltage needed to fully enhance the HS FET. Incorrect BST capacitor placement or value causes weak gate drive, increased conduction loss, and potential thermal failure.
Does the TPS61288RQQR require external compensation components?
Yes-the TPS61288RQQR requires external compensation via the COMP pin using a series RC network (Rc and Cc) connected to AGND. This allows designers to tailor loop stability for specific inductor values (1–4.7 µH) and output capacitance (10–1000 µF), ensuring robust transient response and avoiding oscillation across varying load and input conditions.
TPS61288RQQR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 11-PowerVFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2V
- Voltage - Input (Max):
- 18V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 18V
- Current - Output:
- 15A
- Frequency - Switching:
- 500kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 11-VQFN-HR (2.5x3)
TPS61288RQQR FAQ
1.How can I place an order for TPS61288RQQR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61288RQQR 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 TPS61288RQQR reliable?
The price and inventory of TPS61288RQQR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61288RQQR is usually 5 days.
3.What payment methods are accepted for TPS61288RQQR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61288RQQR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS61288RQQR?
TPS61288RQQR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61288RQQR 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 TPS61288RQQR?
For technical support, including TPS61288RQQR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61288RQQR requirements.
6.How does Aetrix verify that TPS61288RQQR is sourced from the original manufacturer or authorized distributors?
All TPS61288RQQR 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 TPS61288RQQR meets industry standards.
7.What is the process for return or replacement of TPS61288RQQR?
All TPS61288RQQR units undergo pre-shipment inspection (PSI). If there is an issue with TPS61288RQQR, 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 TPS61288RQQR part is unused and in its original packaging.
Return procedure for TPS61288RQQR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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