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Texas Instruments TPS63031DSKR
- Part No.:
- TPS63031DSKR
- Manufacturer:
- Texas Instruments
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
TPS63031DSKR.pdf
- Description:
- IC REG BUCK BST 3.3V 900MA 10SON
- Quantity:
- Payment:
- Shipping:
Inventory:3,576
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Product details
Overview
TPS63031DSKR from Texas Instruments is a fixed-output 3.3-V, high-efficiency single-inductor buck-boost DC/DC converter with integrated 1-A switches, operating from 1.8 V to 5.5 V input and delivering up to 800 mA output in step-down mode (VIN ≥ 3.6 V) and up to 500 mA in boost mode (VIN ≥ 2.4 V), used in portable battery-powered systems such as IP network cameras and blood glucose monitors.
For engineers reviewing the TPS63031DSKR datasheet, TPS63031DSKR pinout, TPS63031DSKR application, or TPS63031DSKR equivalent, key selection considerations include its 3.3-V fixed output, automatic buck-boost transition, power-save mode operation below 100 mA inductor current, 2.4 MHz switching frequency, and thermal performance in the 2.5-mm × 2.5-mm VSON package.
Technical Context
The TPS63031DSKR implements an average-current-mode control architecture with input/output voltage feed-forward for fast transient response, using four internal N-channel MOSFETs in a synchronous 4-switch topology that enables seamless mode transition between buck and boost without discontinuity. Its dual-ground structure separates logic ground (GND) from power ground (PGND) to prevent ground shift under high switching currents.
Operation is governed by a 2.4 MHz fixed-frequency PWM modulator with optional synchronization via the PS/SYNC pin, while overtemperature protection (140°C trip, 20°C hysteresis) and undervoltage lockout (1.5 V typical on VINA) ensure robust system-level reliability across –40°C to 85°C ambient conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±3% (ensures stable rail for 3.3-V microcontrollers and sensors) |
| Input Voltage Range | 1.8 V to 5.5 V (supports single-cell Li-ion down to 2.5 V and two/three-cell alkaline/NiMH) |
| Max Output Current | 800 mA at 3.3 V in step-down mode (VIN = 3.6–5.5 V); 500 mA in boost mode (VIN = 2.4–3.5 V) |
| Switching Frequency | 2.4 MHz typical (enables compact 1.5-μH inductor and low-profile ceramic capacitors) |
| Efficiency | Up to 96% at mid-load (reduces thermal load in space-constrained portable devices) |
| Quiescent Current | 35 μA typical (extends battery life in always-on monitoring applications) |
| Shutdown Current | 0.9 μA max (minimizes battery drain during system sleep) |
Pinout & Package
The TPS63031DSKR is housed in a thermally enhanced 10-pin VSON (DSK) package measuring 2.5 mm × 2.5 mm with an exposed thermal pad connected to PGND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VOUT | Power output | Regulated 3.3-V supply node; requires local 10-μF ceramic capacitor and connection to FB |
| VIN | Main power input | Supplies power stage; accepts 1.8–5.5 V; requires 10-μF input capacitor |
| VINA | Control-stage supply | Provides clean bias for internal circuitry; decoupled with 0.1-μF ceramic capacitor |
| EN | Enable control | Active-high logic input; pulls device into shutdown when low, disconnecting load from input |
| PS/SYNC | Mode control / sync input | Low = enable power-save mode; high = forced fixed-frequency; external clock accepted for synchronization |
| FB | Feedback sense | Internally tied to VOUT for fixed 3.3-V operation; not configurable externally |
| GND | Logic ground reference | Reference for all control circuits; must be connected to PGND at single point near GND pin |
| PGND | Power ground return | Return path for high-current switches and inductors; connects to exposed thermal pad |
| L1, L2 | Inductor connections | Two terminals for external 1.5-μH coupled inductor; critical for buck-boost energy transfer |
Key Features
| Feature | Design Value |
|---|---|
| Automatic buck-boost transition | Seamlessly switches between step-down and boost modes as VIN crosses VOUT, eliminating need for external mode control logic |
| Load disconnect during shutdown | Internal switches isolate VOUT from VIN when EN = low, preventing backfeed and enabling true system power gating |
| Power-save mode | Disables switching when inductor current drops below ~100 mA, reducing quiescent current to 35 μA for extended battery runtime |
| Synchronous 4-switch topology | Uses four internal N-MOSFETs to minimize conduction losses and eliminate external diode requirements |
| Integrated overtemperature protection | Shuts down at 140°C junction temperature with 20°C hysteresis, enabling reliable operation in sealed enclosures |
Applications
| IP Network Camera | Blood Glucose Monitor |
|---|---|
Use Scenario: Compact indoor/outdoor surveillance camera powered by single-cell Li-ion or two AA batteries. IC Role / Device Role / Timing Role: Primary 3.3-V power rail generator maintaining stable output as battery discharges from 4.2 V to 2.5 V. Use Value: Enables continuous video streaming and Wi-Fi connectivity across full battery range without manual voltage scaling or multiple regulators. | Use Scenario: Handheld medical diagnostic device requiring precise analog sensor bias and low-noise digital logic supply. IC Role / Device Role / Timing Role: Single-rail 3.3-V source for MCU, ADC, and electrochemical sensor interface with tight regulation (<±3%) and low ripple. Use Value: Ensures measurement accuracy by suppressing supply-induced offset drift in analog front-end circuits. |
| Portable Data Terminal | Smartphone Peripheral |
Use Scenario: Rugged handheld terminal used in logistics scanning, running barcode engine, display, and Bluetooth radio. IC Role / Device Role / Timing Role: Main system power converter supporting dynamic load steps from idle (10 mA) to active scan (500 mA). Use Value: Power-save mode extends standby time >72 hours; 2.4 MHz switching avoids audible noise in speaker-integrated designs. | Use Scenario: USB-C or wireless accessory (e.g., smart stylus, audio dongle) powered by coin cell or small Li-polymer. IC Role / Device Role / Timing Role: Efficient 3.3-V regulator enabling operation from 2.4–5.5 V input, including USB 5-V and depleted battery sources. Use Value: Eliminates need for separate buck and boost ICs, reducing BOM count and PCB area by >40% versus discrete solutions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck-boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS63021DSJR | Same 3.3-V fixed output, but 2.5-MHz switching frequency and 1.2-A switch rating; slightly higher quiescent current (50 μA) | Supports higher peak loads (up to 1.2 A) and tighter line/load regulation (±0.5% vs ±3%) | Preferred when transient load demands exceed 800 mA or tighter output tolerance is required |
| MAX77827BEWC+T | 3.3-V fixed output, 2.2-MHz switching, 1.2-A switches, but uses different pinout and requires external compensation | Offers programmable soft-start and more flexible fault reporting (PGOOD, OCP flags) | Selected when system-level diagnostics or controlled ramp-up are mandatory for host processor sequencing |
Compared with TPS63031DSKR, TPS63021DSJR delivers higher current capability and tighter regulation at modest efficiency trade-off, while MAX77827BEWC+T adds diagnostic features at the cost of layout complexity and non-drop-in replacement.
Availability
TPS63031DSKR is available at Aetrix Electronics and suitable for IP network cameras, blood glucose monitors, portable data terminals, and other portable medical and industrial devices requiring stable component supply across long product lifecycles.
Supply support for TPS63031DSKR 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 company headquartered in Dallas, Texas, specializing in analog and embedded processing technologies with broad industrial, automotive, and personal electronics reach.
The TPS6303x family was designed specifically for space-constrained, battery-powered portable electronics needing wide-input, fixed-output buck-boost regulation without external mode control or complex compensation.
FAQ
What is the output voltage tolerance of the TPS63031DSKR?
The TPS63031DSKR provides a fixed 3.3-V output with a tolerance of ±3% over temperature, input voltage, and load conditions, corresponding to a guaranteed range of 3.267 V to 3.333 V per the datasheet's electrical characteristics table. This specification applies directly to the TPS63031DSKR and ensures compatibility with standard 3.3-V logic and analog interfaces without external trimming.
Does the TPS63031DSKR require external feedback resistors?
No, the TPS63031DSKR does not require external feedback resistors because it integrates a factory-trimmed resistor divider for its fixed 3.3-V output. The FB pin must be connected directly to VOUT per the datasheet, unlike the adjustable TPS63030DSKR variant. This simplifies design and eliminates resistor tolerance errors in the TPS63031DSKR implementation.
How does power-save mode function in the TPS63031DSKR?
In the TPS63031DSKR, power-save mode activates automatically when the PS/SYNC pin is pulled low, causing the converter to stop switching when inductor current falls below ~100 mA and output voltage remains at or above nominal. It resumes operation only when output voltage droops, minimizing quiescent current to 35 μA - a key feature for extending battery life in intermittently active devices using the TPS63031DSKR.
What is the recommended inductor value for the TPS63031DSKR?
The datasheet specifies a 1.5-μH coupled inductor (e.g., Coilcraft LPS3015-1R5) for the TPS63031DSKR, optimized for 2.4 MHz operation, 800-mA output, and minimal size. Inductor DCR must be low to maintain efficiency, and saturation current rating must exceed the calculated peak switch current (≥1.2 A typical), as defined in the TPS63031DSKR application curves and design procedure.
Can the TPS63031DSKR synchronize to an external clock?
Yes, the TPS63031DSKR supports external clock synchronization via the PS/SYNC pin: applying a logic-level square wave within 2.2–2.6 MHz locks the internal oscillator using a phase-locked loop (PLL). This capability allows noise-sensitive systems to avoid switching frequency interference - a verified feature of the TPS63031DSKR documented in Section 8.4.3 of its datasheet.
TPS63031DSKR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up/Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck-Boost
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 1.8V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Current - Output:
- 900mA (Switch)
- Frequency - Switching:
- 2.4MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-SON (2.5x2.5)
TPS63031DSKR FAQ
1.How can I place an order for TPS63031DSKR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS63031DSKR 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 TPS63031DSKR reliable?
The price and inventory of TPS63031DSKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS63031DSKR is usually 5 days.
3.What payment methods are accepted for TPS63031DSKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS63031DSKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS63031DSKR?
TPS63031DSKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS63031DSKR 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 TPS63031DSKR?
For technical support, including TPS63031DSKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS63031DSKR requirements.
6.How does Aetrix verify that TPS63031DSKR is sourced from the original manufacturer or authorized distributors?
All TPS63031DSKR 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 TPS63031DSKR meets industry standards.
7.What is the process for return or replacement of TPS63031DSKR?
All TPS63031DSKR units undergo pre-shipment inspection (PSI). If there is an issue with TPS63031DSKR, 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 TPS63031DSKR part is unused and in its original packaging.
Return procedure for TPS63031DSKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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