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Texas Instruments TPS61175PWPR
- Part No.:
- TPS61175PWPR
- Manufacturer:
- Texas Instruments
- Package:
- 14-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TPS61175PWPR.pdf
- Description:
- IC REG BST FLYBACK ADJ 14HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:10,840
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Product details
Overview
TPS61175PWPR from Texas Instruments is a monolithic 3-A, 40-V synchronous boost converter IC with current-mode PWM control, programmable 200 kHz–2.2 MHz switching frequency, soft-start, and integrated low-side N-channel MOSFET. It supports boost, SEPIC, and flyback topologies for high-voltage DC-DC conversion in space-constrained industrial and telecom power supplies.
For engineers reviewing the TPS61175PWPR datasheet, TPS61175PWPR pinout, TPS61175PWPR application, or TPS61175PWPR equivalent, key selection criteria include input voltage range (2.9 V–18 V), output capability up to 38 V, thermal performance in HTSSOP-14 PowerPad™, and compatibility with WEBENCH® Power Designer for rapid layout and efficiency optimization.
Technical Context
The TPS61175PWPR implements current-mode PWM control with slope compensation to prevent subharmonic oscillation above 50% duty cycle. Its internal 40-V, 3-A N-channel MOSFET enables up to 38-V output in boost configuration, while the transconductance error amplifier (240–440 μmho) and COMP pin allow full-loop compensation via external RC network.
Switching frequency is set either by an external resistor on FREQ (200 kHz–2.2 MHz) or synchronized to an external clock on SYNC (±20% tolerance). Soft start is user-defined via SS pin capacitor (6 μA bias current), and pulse-skipping mode maintains regulation at light loads-though operation above 1.2 MHz requires external synchronization for reliable skipping behavior.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.9 V to 18 V - supports multicell batteries and regulated 5/12-V rails without pre-regulation |
| Output Voltage Range | Up to 38 V - enables direct generation of 24-V or 35-V system rails from 5-V or 12-V sources |
| Switch Current Limit | 3 A typical, 3.8 A max - defines maximum inductor peak current and short-circuit robustness |
| Switching Frequency | 200 kHz to 2.2 MHz - adjustable via external resistor or SYNC clock; higher frequencies reduce inductor size but require careful layout |
| Efficiency | Up to 93% - achieved at mid-load in optimized boost configuration (e.g., 5 V → 24 V @ 200 mA) |
| Feedback Reference | 1.229 V ±25 mV - sets output accuracy via resistor divider on FB; enables precise voltage programming |
| Quiescent Current | 3.5 mA - determines no-load power loss in always-on applications; shutdown drops to 1.5 μA |
Pinout & Package
TPS61175PWPR is housed in a 14-pin HTSSOP package (5.00 mm × 4.40 mm) with exposed thermal PowerPad™ soldered to AGND for enhanced thermal dissipation (RθJA = 45.2°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SW (1,2) | Switch node | Connects directly to inductor and Schottky diode cathode; carries high di/dt; requires tight layout and Kelvin routing |
| VIN (3) | Main power input | Accepts 2.9–18 V; decoupled with ≥4.7 μF ceramic capacitor close to pin |
| EN (4) | Enable control | Logic-high (>1.2 V) enables operation; internal 800-kΩ pull-down ensures default-off state |
| SS (5) | Soft-start timing | 6 μA internal current charges external capacitor; controls ramp rate of output voltage and limits inrush |
| SYNC (6) | External clock input | Accepts 5-V logic signal (10–90% duty); must be used with FREQ resistor; enables precise frequency alignment |
| AGND (7) | Analog ground reference | Reference for FB, COMP, and internal circuitry; isolated from PGND to minimize noise coupling |
| COMP (8) | Error amplifier output | Drives external RC compensation network; sets loop stability, transient response, and phase margin |
| FB (9) | Feedback input | Monitors output via resistor divider; regulates to 1.229 V reference; high-impedance (200 nA bias) |
| FREQ (10) | Frequency programming | Resistor-connected pin (e.g., 80 kΩ → 1.2 MHz); open-circuit not allowed; sets oscillator base frequency |
| NC (11) | No-connect | Reserved pin; must be tied to AGND to prevent floating and noise pickup |
| PGND (12,13,14) | Power ground return | Source connection for internal MOSFET; multiple pins reduce IR drop and improve thermal path to PowerPad™ |
Key Features
| Feature | Design Value |
|---|---|
| Programmable soft start | Capacitor-controlled ramp (e.g., 47 nF → 4 ms) eliminates output overshoot and inrush current during startup |
| Synchronous frequency sync | External clock input (SYNC) allows precise timing coordination across multiple converters or with system clocks |
| Pulse-skipping light-load mode | Reduces switching activity below ~100 mA load, improving light-load efficiency without requiring external control |
| Integrated 40-V/3-A MOSFET | Eliminates need for external high-voltage switch; simplifies BOM and reduces footprint in high-output-voltage designs |
| Thermal shutdown with hysteresis | Shuts down at 160°C junction temperature and restarts at 145°C, preventing thermal runaway in sustained overload |
Applications
| ADSL Modem Power Supply | TV Tuner Bias Generation |
|---|---|
Use Scenario: Generating stable 24-V rail from 5-V motherboard supply to power line-driver amplifiers and analog front-end circuits. IC Role / Device Role / Timing Role: Primary high-efficiency boost regulator delivering regulated 24 V at up to 300 mA with low ripple and fast transient response. Use Value: Enables compact, single-stage 5 V → 24 V conversion without transformer-based solutions, reducing cost and EMI. | Use Scenario: Providing 35-V bias voltage for RF tuner modules in digital TV receivers operating from 12-V main rail. IC Role / Device Role / Timing Role: High-voltage boost converter configured in standard topology with 1.2-MHz switching for small filter components. Use Value: Achieves >90% efficiency at 35 V/150 mA while meeting stringent EMI requirements due to controllable frequency and soft-start. |
| Industrial Sensor Interface | Portable Test Equipment |
Use Scenario: Powering isolated analog signal chains (e.g., 24-V op-amps, ADC drivers) in battery-powered field instruments. IC Role / Device Role / Timing Role: Input-wide (2.9–18 V) boost controller supporting both Li-ion (3.7 V) and 12-V adapter inputs with seamless transition. Use Value: Single IC accommodates dual input sources; programmable frequency avoids sensitive bands; low quiescent current extends battery life. | Use Scenario: Generating 12-V and 24-V rails from USB-C PD (5–20 V) input in handheld oscilloscopes and signal analyzers. IC Role / Device Role / Timing Role: Flexible topology support (boost/SEPIC) allows safe operation even when input exceeds output (e.g., 15 V → 12 V). Use Value: Eliminates need for buck-boost ICs; SEPIC capability enables non-inverting step-down with wide VIN/VOUT overlap. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61088RHLR | Higher 10-A switch rating, fixed 500-kHz frequency, no SYNC or FREQ pin; smaller 3-mm QFN package | Better suited for high-current, space-constrained apps (e.g., portable displays); lacks programmability and topology flexibility | Select when peak current >3 A is required and frequency tuning is unnecessary |
| LT3467EDE#TRPBF | 2.5-A switch, 36-V max, fixed 1.3-MHz frequency, no soft-start programming, different pinout and compensation scheme | Optimized for low-noise, low-EMI applications; lacks pulse-skipping and external sync; requires different loop design | Select when board-level EMI filtering is critical and design reuse of TI's WEBENCH tools is not needed |
Compared with TPS61175PWPR, TPS61088RHLR offers higher current capacity but sacrifices frequency flexibility and multi-topology support, while LT3467EDE#TRPBF provides tighter EMI control at the cost of reduced configurability and absence of soft-start tuning-making TPS61175PWPR optimal for adaptable, high-voltage, medium-current industrial power designs.
Availability
TPS61175PWPR is available at Aetrix Electronics and suitable for ADSL modems, TV tuners, industrial sensor interfaces, and portable test equipment requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for TPS61175PWPR 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 power conversion ICs.
The TPS61175PWPR belongs to TI's high-voltage boost converter product line, designed specifically for industrial, telecom, and instrumentation applications demanding wide input range, programmable frequency, and robust protection features in compact packages.
FAQ
What is the maximum output voltage achievable with the TPS61175PWPR?
The TPS61175PWPR supports output voltages up to 38 V, as specified in its recommended operating conditions. This limit is enforced by the 40-V rating of its internal N-channel MOSFET and the overvoltage protection threshold. Exceeding 38 V risks violating absolute maximum ratings and may cause permanent damage. For 24-V or 35-V outputs, proper feedback divider selection and layout practices are essential to maintain regulation accuracy and stability.
Does the TPS61175PWPR support SEPIC or flyback configurations?
Yes, the TPS61175PWPR explicitly supports SEPIC and flyback topologies in addition to standard boost, as confirmed in its official description and application sections. Its current-mode control architecture, integrated 40-V switch, and flexible compensation via the COMP pin enable stable operation in these non-isolated and isolated configurations. Design guidelines for each topology-including component selection and loop compensation-are provided in the datasheet's Application and Implementation section.
How does the soft-start function work on the TPS61175PWPR?
The TPS61175PWPR implements soft start via a 6-μA internal current source charging an external capacitor on the SS pin. As the SS voltage ramps from 0 V to 1.8 V, it clamps the COMP pin output, limiting PWM duty cycle and thereby controlling inrush current and output voltage slew rate. A 47-nF capacitor yields ~4 ms soft-start time and eliminates overshoot in typical 5 V → 24 V applications. During shutdown (EN < 0.4 V for >10 ms), the SS capacitor discharges through a 5-kΩ internal resistor.
Can the TPS61175PWPR operate without an external resistor on the FREQ pin?
No, the TPS61175PWPR requires an external resistor connected to the FREQ pin for proper operation-even when using the SYNC pin for external clock synchronization. Leaving FREQ open is prohibited and will result in undefined switching behavior. The resistor sets the base oscillator frequency and remains active as a fallback; the external clock only overrides timing when present within ±20% of the resistor-set frequency.
What thermal considerations apply to the TPS61175PWPR in continuous operation?
The TPS61175PWPR uses an HTSSOP-14 package with PowerPad™, requiring soldering of the thermal pad to AGND for effective heat dissipation. With RθJA = 45.2°C/W, continuous 3-A operation at high duty cycles demands adequate copper area, thermal vias to inner ground planes, and ambient temperature ≤85°C. Thermal shutdown activates at 160°C junction temperature with 15°C hysteresis, ensuring recovery only after sufficient cooling-designers must verify PCB layout per TI's thermal guidelines to avoid derating or instability.
TPS61175PWPR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-PowerTSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up, Step-Up/Step-Down
- Output Configuration:
- Positive
- Topology:
- Boost, Flyback, SEPIC
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.9V
- Voltage - Input (Max):
- 18V
- Voltage - Output (Min/Fixed):
- 2.9V
- Voltage - Output (Max):
- 38V
- Current - Output:
- 3A (Switch)
- Frequency - Switching:
- 200kHz ~ 2.2MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-HTSSOP
TPS61175PWPR FAQ
1.How can I place an order for TPS61175PWPR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61175PWPR 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 TPS61175PWPR reliable?
The price and inventory of TPS61175PWPR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61175PWPR is usually 5 days.
3.What payment methods are accepted for TPS61175PWPR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61175PWPR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS61175PWPR?
TPS61175PWPR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61175PWPR 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 TPS61175PWPR?
For technical support, including TPS61175PWPR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61175PWPR requirements.
6.How does Aetrix verify that TPS61175PWPR is sourced from the original manufacturer or authorized distributors?
All TPS61175PWPR 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 TPS61175PWPR meets industry standards.
7.What is the process for return or replacement of TPS61175PWPR?
All TPS61175PWPR units undergo pre-shipment inspection (PSI). If there is an issue with TPS61175PWPR, 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 TPS61175PWPR part is unused and in its original packaging.
Return procedure for TPS61175PWPR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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