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Texas Instruments TPS61088QRHLTQ1
- Part No.:
- TPS61088QRHLTQ1
- Manufacturer:
- Texas Instruments
- Package:
- 20-VFQFN Exposed Pad
- Datasheet:
-
TPS61088QRHLTQ1.pdf
- Description:
- IC REG BOOST ADJ 10A 20VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:532
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Product details
Overview
TPS61088QRHLTQ1 from Texas Instruments is an AEC-Q100 Grade 1 (–40°C to +125°C) synchronous boost converter IC designed for automotive power rail generation. It delivers up to 10-A switch current, supports 2.7–12-V input and 4.5–12.6-V output, achieves >90% efficiency at 5-VIN/9-VOUT/3-A, and integrates cycle-by-cycle overcurrent and 13.2-V overvoltage protection - enabling high-reliability E-call speaker drive and PoC power delivery.
For engineers reviewing the TPS61088QRHLTQ1 datasheet, TPS61088QRHLTQ1 pinout, TPS61088QRHLTQ1 application, or TPS61088QRHLTQ1 equivalent, key selection considerations include programmable peak current limit (via ILIM), adaptive constant off-time control architecture, MODE-selectable PFM/PWM light-load operation, soft-start timing via SS capacitor, and thermal shutdown at 150°C with 20°C hysteresis.
Technical Context
The TPS61088QRHLTQ1 employs adaptive constant off-time peak-current-control topology, delivering quasi-constant-frequency PWM under moderate-to-heavy loads and selectable PFM or forced PWM modes under light load via the MODE pin. Its internal 21.3-mΩ high-side and 24.4-mΩ low-side MOSFETs enable high-power-density operation without external switches.
Regulation relies on a 1.204-V internal reference at FB, error amplifier transconductance of 190 µA/V, and external compensation via COMP–AGND network. Switching frequency (200 kHz–2.2 MHz) is resistor-programmed between FSW and SW, while peak current limit (7.2–13.0 A) is set by an external resistor from ILIM to AGND - with distinct values for PFM vs FPWM mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7 V to 12 V - supports single/dual Li-ion backup batteries and automotive 3.3-V/5-V rails as input sources. |
| Output Voltage Range | 4.5 V to 12.6 V - enables direct powering of CAN transceivers, audio amplifiers (e.g., 10–11 V for E-call), and A2B devices. |
| Switch Current Limit | Up to 10-A peak - programmable from 7.2 A (FPWM) to 13.0 A (PFM) via ILIM resistor; ensures cold-crank operation at 3.5-VIN/11-VOUT. |
| Efficiency | >90% at 5-VIN/9-VOUT/3-A - achieved via synchronous rectification and low RDS(on) (21.3 mΩ HS / 24.4 mΩ LS). |
| Switching Frequency | 200 kHz to 2.2 MHz - adjustable via external resistor between FSW and SW; allows EMI optimization and inductor size reduction. |
| Protection Features | 13.2-V output overvoltage clamp, cycle-by-cycle current limiting, thermal shutdown (150°C), and UVLO (2.4-V falling threshold). |
| Soft Start | Programmable via external capacitor on SS pin - 5-µA internal charging current enables controlled VOUT ramp to prevent inrush. |
Pinout & Package
TPS61088QRHLTQ1 is housed in a thermally enhanced 4.50-mm × 3.50-mm 20-pin VQFN package (RHL) with exposed thermal pad. Pin numbering follows top-view layout; pins 11 and 12 are NC and recommended for PCB thermal grounding.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (9) | Power input supply | Primary IC power source; supports 2.7–12 V; connects to input capacitor bank and battery/coax rail. |
| EN (2) | Enable logic input | Active-high digital control; internal 800-kΩ pull-down ensures safe default-off state during power-up. |
| FB (17) | Voltage feedback input | Monitors output via resistor divider; references 1.204-V internal bandgap to regulate VOUT precisely. |
| COMP (18) | Error amplifier output | Connects external RC compensation network to AGND; sets loop stability for varied L/C combinations. |
| ILIM (19) | Peak current limit programming | Resistor-to-AGND sets switch current limit; value differs for PFM (11.4 A typ.) vs FPWM (8.7 A typ.) modes. |
| MODE (13) | Light-load operation mode select | Floating = PFM (high efficiency); grounded = forced PWM (fixed fSW, no acoustic noise). |
| SS (10) | Soft-start timing control | External capacitor charges at 5 µA; determines VOUT ramp time and inrush current magnitude. |
| SW (4–7) | Switching node | High-current connection point for external inductor and bootstrap capacitor; shared across four pins for low-inductance routing. |
| BOOT (8) | High-side gate driver supply | Requires 0.1-µF ceramic capacitor to SW; enables full enhancement of internal high-side MOSFET. |
| VOUT (14–16) | Boost output | Delivers regulated output; three parallel pins reduce IR drop and improve thermal dissipation under 10-A load. |
| AGND (20) & PGND (21) | Signal and power ground | Separate AGND (error amp reference) and PGND (switch return path) minimize noise coupling into control loop. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation - meets automotive reliability and lifetime requirements for safety-critical systems. |
| Integrated 21.3-mΩ HS / 24.4-mΩ LS MOSFETs | Eliminates need for external power switches; reduces BOM count and PCB area while maintaining >90% efficiency at 3-A load. |
| Adaptive constant off-time control | Delivers fast transient response with minimal output capacitance - ideal for dynamic loads like E-call speaker bursts. |
| Programmable soft start (SS pin) | Prevents input inrush and output overshoot; timing set by external capacitor (e.g., 47 nF = ~11.4 ms ramp). |
| Resistor-programmable switching frequency | Enables EMI compliance tuning and optimization for magnetic component selection across 200 kHz–2.2 MHz range. |
| Dual-mode light-load operation | PFM improves light-load efficiency (>80% at 1 mA); FPWM avoids audible noise and maintains fixed fSW for predictable filtering. |
Applications
| Automotive E-call System Power | Automotive Smart Antenna Supply |
|---|---|
|
Use Scenario: Powers loudspeaker, MCU, and RF module during emergency call activation, including cold-crank conditions (3.5-V battery). IC Role / Device Role / Timing Role: Primary boost regulator generating stable 10–11 V from 3.3-V or Li-ion backup rail; provides 10-A peak current for speaker burst. Use Value: Enables guaranteed audio output even at low battery voltage; integrated OVP (13.2 V) protects downstream audio amplifier ICs. |
Use Scenario: Supplies 5–9 V to active antenna modules requiring clean, regulated power with low ripple and fast transient response. IC Role / Device Role / Timing Role: Post-regulator boosting 3.3-V CAN bus rail to 5 V or higher; operates in PFM mode for low-idle power consumption. Use Value: Maintains >80% efficiency down to 1 mA load; adaptive off-time control minimizes output voltage deviation during antenna TX bursts. |
| Power-over-Coax (PoC) Bias Supply | Automotive Audio Bus (A2B) Node Power |
|
Use Scenario: Generates bias voltage for coaxial cable transceivers in camera or radar modules where DC power is superimposed on RF signal path. IC Role / Device Role / Timing Role: High-efficiency, low-noise boost stage delivering 12.6 V at up to 2 A; uses forced PWM mode to avoid interference with RF carrier. Use Value: Programmable fSW allows placement outside sensitive RF bands; integrated thermal shutdown prevents overheating in sealed enclosures. |
Use Scenario: Powers A2B slave nodes (e.g., microphones, speakers) requiring precise 10–12 V rails with tight regulation and low EMI. IC Role / Device Role / Timing Role: Synchronous boost converter providing regulated output from vehicle 12-V system or local 3.3-V rail; supports dynamic load steps up to 2 A. Use Value: 1.204-V FB reference and external COMP compensation ensure ±1% output accuracy; VQFN package enables compact layout near A2B PHY. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM61480-Q1 | Lower 8-A switch current; fixed 2.1-MHz fSW; no MODE-selectable PFM/FPWM; requires external compensation. | Better suited for space-constrained 5-V output designs with steady load; lacks programmable light-load behavior for ultra-low quiescent needs. | Select when fixed-frequency operation and smaller solution size outweigh need for PFM efficiency or 10-A capability. |
| TPS61085-Q1 | 5-A switch current; 2.7–6-V input; 3.3–5.5-V output; no ILIM programming; integrated compensation; smaller 3-mm × 3-mm QFN. | Targeted at lower-power infotainment peripherals (USB, sensors); insufficient for E-call speaker or PoC loads. | Choose only for cost-sensitive, low-power automotive subsystems where 10-A capability and wide VOUT range are unnecessary. |
Compared with LM61480-Q1 and TPS61085-Q1, the TPS61088QRHLTQ1 uniquely combines 10-A switch current, 4.5–12.6-V programmable output, MODE-selectable light-load operation, and resistor-programmable current limit - making it the only qualified option for high-dynamic automotive boost applications demanding both peak power and efficiency across full load range.
Availability
TPS61088QRHLTQ1 is available at Aetrix Electronics and suitable for automotive E-call systems, smart antenna modules, power-over-coax interfaces, and A2B node supplies requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.
Supply support for TPS61088QRHLTQ1 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 deep expertise in automotive-grade IC design and manufacturing.
The TPS61088QRHLTQ1 belongs to TI's automotive-qualified synchronous boost converter product line, engineered specifically for high-reliability, high-current power conversion in safety-critical vehicle subsystems such as emergency communication and sensor networks.
FAQ
What is the maximum output current capability of the TPS61088QRHLTQ1?
The TPS61088QRHLTQ1 supports up to 10-A peak switch current, enabling sustained output currents exceeding 3 A depending on input/output voltage ratio, thermal design, and PCB layout. At 5-VIN/9-VOUT, it delivers >3 A with >90% efficiency. The actual continuous output current is limited by thermal performance - junction temperature must remain below 150°C, with thermal shutdown activating at that threshold. Derating is required under high ambient or poor heatsinking conditions.
How does the MODE pin affect light-load efficiency and noise in the TPS61088QRHLTQ1?
The MODE pin selects between two distinct light-load behaviors in the TPS61088QRHLTQ1: floating enables PFM mode (higher efficiency, variable frequency, possible audible noise), while grounding forces PWM mode (fixed frequency, lower light-load efficiency, no acoustic artifacts). In PFM, efficiency remains >80% down to 1 mA; in FPWM, switching frequency stays constant (e.g., 500 kHz), eliminating beat frequencies that could interfere with RF or audio circuits - critical for smart antenna and A2B applications.
Can the TPS61088QRHLTQ1 be used to boost from 3.3 V to 5 V in automotive CAN systems?
Yes, the TPS61088QRHLTQ1 is explicitly designed for this use case: boosting the automotive 3.3-V rail to 5 V for CAN transceivers and other peripherals. Its 2.7–12-V input range accommodates 3.3-V nominal supply with tolerance for droop during cranking. With appropriate output capacitor selection (≥6.8 µF) and compensation, it maintains regulation and fast transient response. The device's AEC-Q100 Grade 1 qualification ensures reliability in harsh automotive environments where CAN nodes operate.
What is the purpose of the ILIM pin on the TPS61088QRHLTQ1, and how is it configured?
The ILIM pin on the TPS61088QRHLTQ1 sets the peak switch current limit via an external resistor to AGND. Its value determines whether the device operates in PFM (higher limit, e.g., 11.4 A typical with 49.9 kΩ) or FPWM (lower limit, e.g., 8.7 A typical with same resistor). This programmability allows designers to optimize for either peak power delivery (E-call speaker burst) or thermal margin (continuous PoC bias). The relationship is defined by TI's Equation 3 and 4 in the datasheet, with worst-case limits accounting for temperature and process variation.
Does the TPS61088QRHLTQ1 include built-in protection features, and what are their thresholds?
Yes, the TPS61088QRHLTQ1 integrates multiple protections: output overvoltage protection triggers at 13.2 V (typical) with 0.25-V hysteresis; thermal shutdown activates at 150°C junction temperature with 20°C hysteresis; cycle-by-cycle overcurrent protection responds within one switching cycle; and dual UVLO circuits disable operation if VIN falls below 2.4 V or VCC drops below 2.1 V. All protections are fully autonomous and require no external components - enhancing system robustness in automotive deployments.
TPS61088QRHLTQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 20-VFQFN Exposed Pad
- 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):
- 2.7V
- Voltage - Input (Max):
- 12V
- Voltage - Output (Min/Fixed):
- 4.5V
- Voltage - Output (Max):
- 12.6V
- Current - Output:
- 10A
- Frequency - Switching:
- 200kHz ~ 2.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-VQFN (3.5x4.5)
TPS61088QRHLTQ1 FAQ
1.How can I place an order for TPS61088QRHLTQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61088QRHLTQ1 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 TPS61088QRHLTQ1 reliable?
The price and inventory of TPS61088QRHLTQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61088QRHLTQ1 is usually 5 days.
3.What payment methods are accepted for TPS61088QRHLTQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61088QRHLTQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS61088QRHLTQ1?
TPS61088QRHLTQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61088QRHLTQ1 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 TPS61088QRHLTQ1?
For technical support, including TPS61088QRHLTQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61088QRHLTQ1 requirements.
6.How does Aetrix verify that TPS61088QRHLTQ1 is sourced from the original manufacturer or authorized distributors?
All TPS61088QRHLTQ1 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 TPS61088QRHLTQ1 meets industry standards.
7.What is the process for return or replacement of TPS61088QRHLTQ1?
All TPS61088QRHLTQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS61088QRHLTQ1, 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 TPS61088QRHLTQ1 part is unused and in its original packaging.
Return procedure for TPS61088QRHLTQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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