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Texas Instruments TPS26633PWPR
- Part No.:
- TPS26633PWPR
- Manufacturer:
- Texas Instruments
- Category:
- Current Regulation/Management
- Package:
- 20-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TPS26633PWPR.pdf
- Description:
- IC ELECTRONIC FUSE 2% 20HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,282
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Product details
Overview
TPS26633PWPR from Texas Instruments is a 60V, 6A industrial eFuse with integrated 31mΩ hot-swap FET, fixed 35V overvoltage clamp, adjustable current limit (0.6–6A ±7%), output power limiting (±6%), and fast reverse current blocking (0.17µs). It delivers robust surge protection per IEC 61000-4-5 Class-A and supports reverse polarity protection via external N-FET in PLC power rails.
For engineers reviewing the TPS26633PWPR datasheet, TPS26633PWPR pinout, TPS26633PWPR application, or TPS26633PWPR equivalent, key selection criteria include its 2× pulse overcurrent support, programmable PLIM/ILIM/UVLO/OVP, PGOOD signaling for DC-DC enable control, and HTSSOP-20 thermal performance (RθJA = 32.2°C/W).
Technical Context
The TPS26633PWPR implements dual-stage overcurrent response-fast-trip at 3× IOL for short circuits (1µs) and 2× IOL pulse limiting with 20–31ms duration-while maintaining precise output power regulation via PLIM pin (100kΩ sets 100W max at 54V). Its B_GATE/DRV driver pair enables active reverse current blocking with sub-microsecond detection.
Thermal regulation activates at 136–154°C and transitions to shutdown at 165°C (11°C hysteresis), while dVdT-controlled slew rate (25 V/V gain, 2µA charging current) manages inrush into large capacitive loads. The device operates across –40°C to +125°C junction temperature with 1.7mA typical quiescent current in enabled state.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Voltage | 4.5V to 60V input; 67V absolute max - supports wide industrial supply rails including 24V and 48V systems. |
| RON | 30.44 mΩ typ at 25°C - minimizes conduction loss and self-heating under 6A continuous load. |
| Current Limit Range | 0.6A to 6A adjustable via ILIM resistor (±7% accuracy) - enables precise fault threshold tuning for diverse load profiles. |
| Overvoltage Clamp | Fixed 35V (TPS26633-specific) - clamps transients without external components, meeting IEC 61000-4-5 surge immunity requirements. |
| Power Limit Accuracy | ±6% output power limiting (PLIM pin) - ensures compliance with IEC 61010-1 energy-limited circuit requirements. |
| Reverse Blocking Speed | 0.17µs detection delay - prevents backfeed during input reversal in redundant power architectures. |
| PGOOD Output | Active-high status signal with 1.3ms deglitch - synchronizes downstream DC-DC converter enable timing after safe ramp-up. |
Pinout & Package
TPS26633PWPR uses the PWP package: 20-pin HTSSOP (6.50mm × 4.40mm) with exposed PowerPad™ for thermal dissipation. Pin 1 is top-left corner (marking dot adjacent), and PowerPad must be soldered to PCB ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pins 1,2,3) | Input power connection | Connects to drain of internal 31mΩ FET; accepts up to 60V supply with 67V transient tolerance. |
| B_GATE (Pin 4) | External blocking FET gate driver | Drives gate of external N-FET for reverse polarity protection; 10.23V clamp limits gate stress. |
| DRV (Pin 5) | Blocking FET pulldown switch drive | Fast pulldown path for reverse current blocking; 4.25V logic-high level ensures rapid turn-off. |
| IN_SYS (Pin 6) | Device supply and reverse polarity reference | Provides bias for internal circuitry; connects to source of external blocking FET when used. |
| PLIM (Pin 8) | Output power limit programming input | Resistor-to-GND sets max output power (e.g., 100kΩ = 100W); unique to TPS26633 among PWPR variants. |
| ILIM (Pin 11) | Overload current limit programming input | Resistor-to-GND configures 0.6–6A trip point; supports 2× pulse mode for motor startup surges. |
| MODE (Pin 12) | Fault response selection | Open = latch-off; grounded = auto-retry - determines system recovery behavior after overcurrent events. |
| PGOOD (Pin 17) | Power status indicator | Signals valid output voltage (VOUT > VPGTH) with 1.3ms rise-time deglitch; used to enable downstream converters. |
| IMON (Pin 14) | Analog current monitor output | Sources 27.9 µA/A scaled current (±6%); converts to voltage with external resistor for real-time load monitoring. |
| FLT (Pin 15) | Open-drain fault flag | Asserts low on UVLO, OVP, overcurrent, thermal shutdown, or reverse polarity - provides centralized fault reporting. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 31mΩ RON FET | Reduces board space and BOM count vs discrete hot-swap solutions; enables compact 20-pin HTSSOP layout. |
| 2× Pulse Overcurrent Support | Allows temporary 12A peak (at 6A setting) for motor encoder or solenoid inrush without latching off. |
| Programmable Output Power Limit (PLIM) | Enforces energy-limited operation per IEC 61010-1; eliminates need for external power-limiting circuitry. |
| IEC 61000-4-5 Class-A Surge Immunity | Withstands 1kV line-earth surges at 24V supply - validated for factory automation environments with high EMI exposure. |
| Fast Reverse Current Blocking (0.17µs) | Prevents backfeeding in dual-supply or battery-backup systems where input may drop below output voltage. |
Applications
| PLC Power Rail Protection | Motor Drive Encoder Supply |
|---|---|
Use Scenario: Protecting 24V DC power distribution to I/O modules and sensor hubs in programmable logic controllers subject to field wiring faults and lightning-induced surges. IC Role / Device Role / Timing Role: Primary eFuse providing current limiting, overvoltage clamping, and reverse polarity blocking; PGOOD enables downstream isolated DC-DC converters only after stable output ramp. Use Value: Eliminates fuse replacement downtime and prevents cascading damage from shorted field wiring or induced transients per IEC 61000-4-5. | Use Scenario: Supplying clean, regulated 24V to rotary encoders and position sensors in CNC motor drives where cable runs introduce noise and potential ground loops. IC Role / Device Role / Timing Role: Hot-swap controller with dVdT-controlled slew rate and analog IMON feedback; monitors encoder current for predictive maintenance. Use Value: Prevents encoder reset during inrush into long cables' capacitance and detects open-circuit or short-circuit faults via IMON trend analysis. |
| Electronic Circuit Breaker | Industrial HMI Power Management |
Use Scenario: Replacing electromechanical breakers in distributed control systems requiring programmable trip thresholds and remote fault reporting. IC Role / Device Role / Timing Role: Solid-state circuit breaker with configurable 0.6–6A limit, 2× pulse mode for load startup, and FLT/IMON telemetry interface. Use Value: Enables software-defined protection profiles and eliminates mechanical wear, supporting predictive maintenance via current signature logging. | Use Scenario: Managing power to human-machine interface displays and touch panels in harsh factory environments with frequent power cycling and ESD exposure. IC Role / Device Role / Timing Role: Input protector with UL 2367 recognition and IEC 62368-1 certification; PGOOD coordinates display backlight enable sequencing. Use Value: Meets safety agency requirements for user-accessible electronics while suppressing fast transients (IEC 61000-4-4) that cause display glitches or resets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar eFuse applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS26632PWPR | Same 35V clamp and PLIM, but 1× pulse overcurrent (no 2× mode) | Lacks surge-tolerant motor startup capability; suitable for static loads only | Select when pulse overcurrent is unnecessary and cost optimization is prioritized. |
| TPS26635PWPR | 39V overvoltage clamp (vs 35V), otherwise identical PLIM/2× pulse/current limit specs | Supports higher bus voltages (e.g., 36V nominal systems) but requires revalidation of clamp margin | Choose for 36–42V industrial buses where 35V clamp is insufficient. |
Compared with TPS26632PWPR, the TPS26633PWPR adds critical 2× pulse overcurrent for motor encoder inrush; versus TPS26635PWPR, it trades 4V lower clamp headroom for tighter transient suppression in 24V PLC rails.
Availability
TPS26633PWPR is available at Aetrix Electronics and suitable for factory automation, motor drive encoder supplies, and electronic circuit breaker designs requiring stable component supply, long-term lifecycle support, and certified surge resilience.
Supply support for TPS26633PWPR 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 for industrial, automotive, and communications markets.
The TPS2663x family was engineered specifically for industrial eFuse applications demanding high-voltage surge immunity, programmable power limiting, and reverse polarity protection in PLCs, motor drives, and safety-critical power distribution.
FAQ
What is the maximum continuous current rating for the TPS26633PWPR?
The TPS26633PWPR supports up to 6A continuous output current with its integrated 31mΩ FET. This rating assumes proper PCB thermal design (e.g., 2oz copper, 4cm² thermal pad) and ambient temperature ≤85°C. At full 6A, power dissipation is ~1.1W, requiring attention to RθJA = 32.2°C/W to maintain junction temperature below 125°C.
Does the TPS26633PWPR support reverse polarity protection without external components?
No - the TPS26633PWPR requires an external N-channel MOSFET connected via B_GATE and DRV pins to provide reverse polarity protection and reverse current blocking. The internal FET only handles forward conduction. Leaving B_GATE floating disables this feature, making external FET mandatory for reverse protection.
How is the 35V overvoltage clamp implemented in the TPS26633PWPR?
The TPS26633PWPR uses an internal clamping circuit that activates when VIN_SYS exceeds 35V (typical), limiting output voltage to 32.8V min / 35V max. Unlike adjustable OVP variants, this clamp is fixed and does not require external resistors - simplifying design for 24V systems needing guaranteed transient suppression.
Can the TPS26633PWPR be used in systems requiring IEC 62368-1 compliance?
Yes - the TPS26633PWPR is explicitly certified to IEC 62368-1 and UL 2367 (File E169910). Its programmable power limiting (PLIM), current limiting, and thermal shutdown functions directly support the energy-limited circuit (ELC) and safeguarded secondary circuit (SSC) requirements of IEC 62368-1 Annex G.
What is the purpose of the dVdT pin on the TPS26633PWPR?
The dVdT pin controls output voltage slew rate during power-up by charging an external capacitor. With 2µA sourcing current and 25 V/V gain, a 22nF capacitor yields ~8.35ms 10–90% ramp time - preventing inrush into large capacitive loads (e.g., PLC backplanes) and avoiding upstream supply droop or false overcurrent trips.
TPS26633PWPR 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
TPS26633PWPR FAQ
1.How can I place an order for TPS26633PWPR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS26633PWPR 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 TPS26633PWPR reliable?
The price and inventory of TPS26633PWPR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS26633PWPR is usually 5 days.
3.What payment methods are accepted for TPS26633PWPR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS26633PWPR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS26633PWPR?
TPS26633PWPR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS26633PWPR 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 TPS26633PWPR?
For technical support, including TPS26633PWPR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS26633PWPR requirements.
6.How does Aetrix verify that TPS26633PWPR is sourced from the original manufacturer or authorized distributors?
All TPS26633PWPR 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 TPS26633PWPR meets industry standards.
7.What is the process for return or replacement of TPS26633PWPR?
All TPS26633PWPR units undergo pre-shipment inspection (PSI). If there is an issue with TPS26633PWPR, 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 TPS26633PWPR part is unused and in its original packaging.
Return procedure for TPS26633PWPR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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