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Texas Instruments TPS26631PWPT
- Part No.:
- TPS26631PWPT
- Manufacturer:
- Texas Instruments
- Category:
- Current Regulation/Management
- Package:
- 20-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TPS26631PWPT.pdf
- Description:
- IC ELECTRONIC FUSE 2% 20HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:678
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Product details
Overview
TPS26631PWPT from Texas Instruments is a 60V, 6A industrial eFuse with integrated 31mΩ hot-swap FET, adjustable current limiting (0.6–6A ±7%), fast reverse current blocking (0.17µs), and IEC61000-4-4/4-5 surge immunity. It delivers power path protection in PLC I/O modules and motor drive encoder supplies.
For engineers reviewing the TPS26631PWPT datasheet, TPS26631PWPT pinout, TPS26631PWPT application, or TPS26631PWPT equivalent, key selection criteria include programmable overvoltage cutoff, auto-retry/latch-off fault response, analog current monitoring (±6%), and HTSSOP-20 thermal performance (RθJA = 32.2°C/W).
Technical Context
The TPS26631PWPT implements active current limiting with 2× pulse overcurrent support and fast-trip comparator threshold at 3× IOL, enabling robust short-circuit response within 1µs. Its B-GATE driver supports external N-FET for reverse polarity protection, while dV/dT control enables precise inrush current management via external capacitor.
It features dual-mode fault handling via MODE pin (latch-off or auto-retry), PGOOD output for downstream DC-DC enable/disable sequencing, and IMON analog current monitor with 27.9µA/A gain. Thermal regulation activates at 136–154°C, with shutdown at 165°C and 11°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Voltage | 4.5V to 60V input range; supports 24V/48V industrial rails with 67V absolute max rating. |
| RON | 30.44 mΩ typical (25°C); enables <1.8W conduction loss at 6A, reducing thermal stress in compact layouts. |
| Current Limit Range | 0.6A–6A adjustable via ILIM resistor (±7% accuracy); supports scalable load protection across system variants. |
| Reverse Blocking Speed | 0.17µs detection delay; prevents backfeed during input reversal in redundant power systems. |
| Surge Immunity | IEC61000-4-5 compliant with Class-A system performance; sustains 24V supply surges without latch-up or damage. |
| Thermal Shutdown | 165°C trip point with 11°C hysteresis; ensures safe recovery after overload without manual reset. |
| Supply Current | 1.7mA typical operating IQ; 60µA shutdown current enables low-power standby in always-on systems. |
Pinout & Package
TPS26631PWPT uses a 20-pin HTSSOP (PWP) package measuring 6.50mm × 4.40mm with exposed PowerPad for thermal dissipation. Pin 1 is IN (power input to internal FET drain); pins 18/19 are OUT (power output); pin 9 is GND; pin 13 is IMON (analog current monitor output); pin 15 is PGTH (PGOOD comparator input); pin 17 is PGOOD (active-high status flag); pin 12 is SHDN (logic-level shutdown control).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pin 1) | Power input | Connects to DRAIN of internal 31mΩ FET; accepts 4.5–60V supply. |
| OUT (Pins 18, 19) | Power output | Dual-source output pads reduce trace resistance and improve current sharing in high-load designs. |
| GND (Pin 9) | Reference ground | System ground reference; must connect to PCB ground plane under PowerPad for thermal integrity. |
| ILIM (Pin 11) | Current limit programming | Resistor-to-GND sets 0.6–6A limit; 3kΩ yields 6A ±7%. |
| MODE (Pin 12) | Fault response selector | Open = latch-off; grounded = auto-retry; configures behavior after overcurrent event. |
| SHDN (Pin 13) | Shutdown control | Pull low to enter 60µA shutdown; cycling resets latched faults. |
| IMON (Pin 14) | Analog current monitor | Sources 27.9µA/A; 10kΩ-to-GND yields 279mV/A for precision load monitoring. |
| PGOOD (Pin 17) | Power status flag | Active-high open-drain output; signals stable VOUT > VPGTH threshold (1.2V). |
| FLT (Pin 15) | Fault indicator | Open-drain output asserted low on UVLO, OVP, overcurrent, or thermal fault. |
| PowerPad | Thermal pad | Must be soldered to inner/outer ground planes; primary heat path (RθJB = 10°C/W). |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable output slew rate | dV/dT pin controls ramp time (e.g., 22nF → 8.35ms 10–90% rise), preventing inrush-induced voltage droop. |
| Programmable overvoltage cutoff | OVP pin sets trip threshold (33.2–35.4V rising); disables FET before downstream IC damage occurs. |
| Fast reverse current blocking | 0.17µs detection + DRV-driven pulldown ensures <100ns reverse conduction window in dual-supply systems. |
| 2× pulse overcurrent support | Enables brief 12A surges (e.g., motor startup) without fault assertion, improving system reliability. |
| UL 2367 recognition | File E169910 confirms compliance for industrial equipment; eliminates need for external certification testing. |
Applications
| PLC I/O Module Protection | Motor Drive Encoder Supply |
|---|---|
Use Scenario: Protecting 24V digital input/output channels in programmable logic controllers against field wiring faults and ESD. IC Role / Device Role / Timing Role: Primary power path controller with fast-trip (<1µs) short-circuit response and PGOOD sequencing for isolated signal conditioning ICs. Use Value: Eliminates fuse replacement downtime; maintains channel availability during transient overloads per IEC61000-4-4. | Use Scenario: Delivering clean, surge-protected 24V to optical encoders in CNC motor drives subject to cable coupling noise. IC Role / Device Role / Timing Role: Hot-swap FET with dV/dT-controlled ramp and reverse polarity blocking to prevent encoder damage during maintenance swaps. Use Value: Enables live insertion without brownout; blocks reverse current from encoder backfeed into main drive bus. |
| Electronic Circuit Breaker | Factory Automation Sensor Hub |
Use Scenario: Replacing electromechanical breakers in distributed I/O cabinets requiring remote reset and diagnostics. IC Role / Device Role / Timing Role: Intelligent load switch with IMON current telemetry and FLT/PGOOD status reporting to PLC master. Use Value: Provides real-time load current data (±6%) and fault logging without adding external shunt amplifiers. | Use Scenario: Powering multi-sensor nodes (temperature, pressure, proximity) in harsh factory environments with EMI and surge exposure. IC Role / Device Role / Timing Role: Surge-immune front-end regulator with thermal regulation and programmable UVLO to maintain operation during line sags. Use Value: Sustains sensor uptime during 24V rail dips to 14.5V (UVLO falling threshold) without system reset. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar eFuse applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS26630PWPT | No pulse overcurrent support; single-cycle current limiting only. | Lacks 2× surge tolerance needed for motor startup or capacitive load charging. | Select when strict 1× current limiting suffices and cost sensitivity outweighs surge margin. |
| TPS26633PWPT | Includes output power limiting (PLIM) and 35V fixed overvoltage clamp. | Designed for systems requiring IEC61010-1 compliance with power-limited outputs. | Choose when output power capping (e.g., ≤100W at 54V) is mandated for safety certification. |
Compared with TPS26630PWPT, TPS26631PWPT adds pulse overcurrent headroom critical for dynamic loads; versus TPS26633PWPT, it omits PLIM but retains adjustable OVP-making it optimal for flexible overvoltage protection without power capping constraints.
Availability
TPS26631PWPT is available at Aetrix Electronics and suitable for factory automation, motor drives, and electronic circuit breaker applications requiring stable component supply, long-term industrial lifecycle support, and full traceability.
Supply support for TPS26631PWPT 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 delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and communications markets.
The TPS2663x family is designed as industrial-grade eFuses for high-reliability power path protection in programmable logic controllers, motor drives, and sensor hubs-emphasizing surge resilience, programmable fault response, and thermal robustness.
FAQ
What is the maximum continuous current rating for the TPS26631PWPT?
The TPS26631PWPT supports up to 6A continuous output current with RON = 30.44 mΩ at 25°C. At 85°C junction temperature, RON rises to 45 mΩ, limiting practical continuous current to ~4.5A in thermally constrained layouts without forced airflow or enhanced copper pour.
How does the TPS26631PWPT implement reverse polarity protection?
The TPS26631PWPT enables reverse polarity protection using its B_GATE and DRV pins to drive an external N-channel FET. When reverse voltage is detected (VIN_SYS – VOUT < –15 mV), the device asserts DRV to rapidly pull down the external FET's gate, achieving 0.17µs blocking response. The internal FET remains off, preventing reverse current flow.
Can the TPS26631PWPT be used without an external FET?
Yes, the TPS26631PWPT operates fully functional without an external FET. In this configuration, IN_SYS is shorted to IN, B_GATE and DRV are left floating, and reverse polarity protection is disabled. The device still provides forward current limiting, overvoltage/undervoltage protection, thermal regulation, and PGOOD signaling.
What is the purpose of the dVdT pin on the TPS26631PWPT?
The dVdT pin on the TPS26631PWPT sets output voltage slew rate by connecting an external capacitor to GND. A 22nF capacitor yields an 8.35ms 10–90% ramp time, controlling inrush current into large capacitive loads (e.g., DC-DC input filters) and preventing upstream supply sag or tripping.
Does the TPS26631PWPT support both auto-retry and latch-off fault responses?
Yes, the TPS26631PWPT supports both fault responses via the MODE pin: open-circuit configures latch-off (requires SHDN toggle to reset), while grounding MODE enables auto-retry with 550–800ms retry delay. This flexibility allows matching system-level fault recovery policies-critical for unattended industrial equipment.
TPS26631PWPT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 20-PowerTSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Electronic Fuse
- Sensing Method:
- -
- Accuracy:
- ±2%
- Voltage - Input:
- 4.5V ~ 60V
- Current - Output:
- 6A
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-HTSSOP
TPS26631PWPT FAQ
1.How can I place an order for TPS26631PWPT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS26631PWPT 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 TPS26631PWPT reliable?
The price and inventory of TPS26631PWPT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS26631PWPT is usually 5 days.
3.What payment methods are accepted for TPS26631PWPT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS26631PWPT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS26631PWPT?
TPS26631PWPT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS26631PWPT 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 TPS26631PWPT?
For technical support, including TPS26631PWPT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS26631PWPT requirements.
6.How does Aetrix verify that TPS26631PWPT is sourced from the original manufacturer or authorized distributors?
All TPS26631PWPT 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 TPS26631PWPT meets industry standards.
7.What is the process for return or replacement of TPS26631PWPT?
All TPS26631PWPT units undergo pre-shipment inspection (PSI). If there is an issue with TPS26631PWPT, 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 TPS26631PWPT part is unused and in its original packaging.
Return procedure for TPS26631PWPT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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