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Texas Instruments TPS272C45BRHFR
- Part No.:
- TPS272C45BRHFR
- Manufacturer:
- Texas Instruments
- Package:
- 24-VFQFN Exposed Pad
- Datasheet:
-
TPS272C45BRHFR.pdf
- Description:
- 36-V, 45-M, 3-A, 2-CH, INDUSTRIA
- Quantity:
- Payment:
- Shipping:
Inventory:2,660
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Product details
Overview
TPS272C45BRHFR from Texas Instruments is a dual-channel smart high-side switch optimized for 24-V industrial control systems, featuring 45-mΩ typical RDS(on), 6–36 V DC operating range, and integrated diagnostics including per-channel load current sensing and open-load detection. It drives inductive, capacitive, and resistive loads in PLC digital output modules and IO-Link master ports.
For engineers reviewing the TPS272C45BRHFR datasheet, TPS272C45BRHFR pinout, TPS272C45BRHFR application, or TPS272C45BRHFR equivalent, key selection criteria include dual-channel current limiting (adjustable 0.7–4 A or fixed 5.8 A), thermal shutdown with 160–210°C trip range, diagnostic enable (DIA_EN) and select (SEL) logic, and QFN-24 (5 mm × 4 mm) package compatibility with PCB thermal management requirements.
Technical Context
The TPS272C45BRHFR implements two independent high-side MOSFETs with integrated gate drivers, adjustable dual-threshold current limiting (inrush + overload), and an analog current-sense output (SNS) multiplexed between channels via SEL. Its fault handling supports auto-retry or latched-off behavior via LATCH pin configuration.
It features configurable supply architecture: VDD accepts 3.3–5.5 V external low-voltage input to reduce quiescent current drawn from VS, or can be grounded to enable internal regulation (variant-dependent). Protection includes short-to-ground detection, thermal shutdown with 24°C hysteresis, and integrated output clamp for inductive load discharge.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RDS(on) | 45 mΩ typical at 25°C - minimizes conduction loss driving up to 4 A per channel at 24 V. |
| Operating Voltage | 6–36 V on VS pin - supports wide industrial rail range including 24-V nominal systems. |
| Quiescent Current | 0.5 mA per channel typical from 24-V supply - enables low-power standby in always-on modules. |
| Current Limit | Adjustable 0.7–4 A (via RILIMx) or fixed 5.8 A - allows precise load matching and inrush control. |
| Diagnostic Accuracy | ±4.4% current sense error at 1–4 A - enables reliable predictive maintenance and fault classification. |
| Thermal Shutdown | 160–210°C trip range with 18–30°C hysteresis - ensures robust overtemperature recovery in enclosed enclosures. |
| Open-Load Detection | Detects wire-break faults with 1.4–2.5 V threshold and <440 µs response - critical for safety-critical I/O monitoring. |
| Package | 24-pin QFN (5 mm × 4 mm, 0.5 mm pitch) - provides compact footprint and enhanced thermal dissipation via PowerPad. |
Pinout & Package
TPS272C45BRHFR is housed in a 24-pin QFN package (5.00 mm × 4.00 mm body, 0.5 mm pin pitch) with exposed thermal pad (PowerPad™) requiring connection to GND plane for optimal thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN1 / EN2 | Input control | Active-high enable for Channel 1 / Channel 2; internal 0.8–2.5 MΩ pulldown ensures default OFF state. |
| SNS | Analog output | Current-proportional output (1200× scaling); multiplexed between CH1/CH2 based on SEL state. |
| SEL | Input select | Selects SNS source: SEL = 0 → CH1 current/fault; SEL = 1 → CH2 current/fault. |
| DIA_EN | Input enable | Activates diagnostics (current sense, open-load, short-to-supply); internal pulldown defaults to disabled. |
| LATCH | Input mode | LATCH = 0 → auto-retry after fault; LATCH = 1 → latched OFF until reset. |
| FLT | Output flag | Open-drain active-low fault indicator for either channel; requires external pullup. |
| ILIM1 / ILIM2 | Output config | Connect external resistor to GND to set per-channel current limit threshold (0.7–4 A range). |
| VDD | Supply input | Accepts 3.3–5.5 V external supply to reduce VS quiescent draw; grounding enables internal LDO option. |
| VS | Main supply | Primary 6–36 V input; connected across four pins (8,9,23,24) for low-impedance power delivery. |
| OUT1 / OUT2 | Power outputs | High-side switched outputs; each routed across three pins (e.g., OUT1 on pins 1,2,3) for current sharing. |
| GND | Reference | Ground reference for all circuitry; PowerPad must be soldered to GND plane for thermal integrity. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-threshold current limiting | Separate inrush (higher current, time-limited) and overload (lower sustained) thresholds prevent false trips during lamp/capacitor startup. |
| Per-channel diagnostic multiplexing | Single SNS pin delivers accurate current measurement or fault status for either channel via SEL control - reduces BOM and routing complexity. |
| Integrated output clamp | Internal clamp limits voltage spike to 49–61 V during inductive load turnoff - eliminates need for external TVS in many 24-V applications. |
| Configurable fault reporting | FLT pin signals combined fault; LATCH pin selects auto-retry vs. latched-off behavior - simplifies MCU firmware logic for safety compliance. |
| Low-noise capacitive load drive | Dual-level current limiting minimizes peak inrush into large capacitors - avoids supply droop and improves system stability. |
| Functional safety support | Documentation available for ISO 26262 and IEC 61508 system-level design - enables use in SIL2/ASIL-B rated subsystems. |
Applications
| PLC Digital Output Module | IO-Link Master Port |
|---|---|
|
Use Scenario: Driving solenoids, relays, and indicator LEDs in modular programmable logic controller backplanes. IC Role / Device Role / Timing Role: High-side power switch with real-time load monitoring and open-wire detection for functional safety compliance. Use Value: Enables Class 1 Div 2 certified designs with 45-mΩ RDS(on) reducing heat generation and eliminating need for heatsinks in dense modules. |
Use Scenario: Providing configurable, protected power to IO-Link sensors with diagnostics for predictive maintenance. IC Role / Device Role / Timing Role: Smart power interface delivering stable 24-V supply while reporting current consumption and fault status via SNS/FLT. Use Value: Supports IO-Link specification's requirement for load current measurement accuracy (±4.4%) and sub-500 µs open-load detection latency. |
| Motor Drive Enable Stage | Building Automation Actuator Control |
|
Use Scenario: Enabling/disabling small DC motors or stepper driver stages in HVAC and access control systems. IC Role / Device Role / Timing Role: Robust high-side switch with thermal shutdown and short-circuit protection during motor stall conditions. Use Value: Withstands 4000-V HBM ESD on OUT pins and provides 1000-V surge immunity - meets IEC 61000-4-5 for harsh building environments. |
Use Scenario: Controlling blinds, valves, and lighting ballasts in smart building networks with remote diagnostics. IC Role / Device Role / Timing Role: Dual-channel load manager enabling coordinated actuator sequencing and health monitoring via shared SNS pin. Use Value: Reduces component count by integrating current sense, clamp, and fault signaling - cuts PCB area by >30% vs. discrete FET + sense + protection solutions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-side switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS272C45D | Dual FLT1/FLT2 pins instead of single FLT; identical RDS(on), current limit, and package. | Enables independent fault reporting per channel without software multiplexing - preferred for safety-critical systems requiring channel-level fault isolation. | Choose TPS272C45D when separate fault signaling is required; TPS272C45BRHFR remains optimal for cost-sensitive designs using single FLT with MCU polling. |
| TPS272C45B | Integrated 3.3-V LDO (VDD internally generated); no external low-voltage supply needed. | Reduces bill-of-materials by eliminating external regulator; slightly higher VS quiescent current (4.4 mA vs. 1.4 mA in dual-supply mode). | Choose TPS272C45B for simplified power architecture; TPS272C45BRHFR offers lower total system power when 3.3/5-V rail is already available. |
Compared with TPS272C45D and TPS272C45B, the TPS272C45BRHFR provides optimal balance of diagnostic flexibility (multiplexed SNS), low-quiescent operation with external VDD, and single-fault signaling - making it ideal for space-constrained, thermally sensitive industrial I/O modules where BOM count and thermal budget are primary constraints.
Availability
TPS272C45BRHFR is available at Aetrix Electronics and suitable for industrial PLC systems, IO-Link master ports, and motor drive enable stages requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for TPS272C45BRHFR 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 connectivity technologies for industrial, automotive, and communications markets.
The TPS272C45BRHFR belongs to TI's smart power switch portfolio designed specifically for industrial control applications demanding high reliability, integrated diagnostics, and functional safety support in compact packages.
FAQ
What is the maximum continuous load current per channel for the TPS272C45BRHFR?
The TPS272C45BRHFR supports 4.0 A continuous load current per channel at 85°C ambient when only one channel is enabled. With both channels enabled simultaneously, the maximum continuous current drops to 3.0 A due to thermal derating. This is specified under recommended operating conditions with proper PCB copper area for thermal dissipation via the PowerPad.
How does the TPS272C45BRHFR implement open-load detection?
The TPS272C45BRHFR performs open-load (wire-break) detection by measuring the voltage difference between VS and OUTx when the channel is disabled. With DIA_EN high, an internal 125–180 kΩ pull-up resistor creates a detectable voltage drop (1.4–2.5 V threshold) across the open circuit. Detection latency is ≤440 µs from ENx deactivation, enabling rapid fault response in safety-critical I/O modules.
Can the TPS272C45BRHFR drive inductive loads without external components?
Yes - the TPS272C45BRHFR integrates an output clamp that limits flyback voltage to 49–61 V during inductive load turnoff. This eliminates the need for external TVS diodes in most 24-V industrial applications. The clamp activates automatically when VDS exceeds threshold, protecting the internal MOSFET and downstream circuitry without additional components.
What is the purpose of the VDD pin on the TPS272C45BRHFR?
The VDD pin on the TPS272C45BRHFR accepts a 3.3–5.5 V external supply to power internal logic and diagnostics, reducing quiescent current drawn from the main VS rail. When grounded, some variants (e.g., C/D) enable an internal LDO. Using external VDD lowers total system power - e.g., IQ drops from 4.4 mA (VS-only) to 1.4 mA (dual-supply, diagnostics disabled) at 24 V.
How does the TPS272C45BRHFR handle short-circuit faults?
Upon detecting a short-circuit event, the TPS272C45BRHFR limits output current to its configured threshold (e.g., 5.8 A fixed or 0.7–4 A adjustable), then triggers thermal shutdown if sustained. Fault status is signaled via the open-drain FLT pin. Recovery behavior depends on the LATCH pin: grounded = auto-retry after 1–3 ms; high = latched off until reset. This dual-layer protection prevents device damage and supports safe system recovery.
TPS272C45BRHFR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 24-VFQFN Exposed Pad
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Type:
- General Purpose
- Number of Outputs:
- 2
- Ratio - Input:Output:
- 1:1
- Output Configuration:
- High Side
- Output Type:
- N-Channel
- Interface:
- On/Off
- Voltage - Load:
- 4.5V ~ 36V
- Voltage - Supply (Vcc/Vdd):
- 3V ~ 5.5V
- Current - Output (Max):
- 5.8A
- Rds On (Typ):
- 45mOhm
- Input Type:
- Non-Inverting
- Features:
- Load Discharge, Slew Rate Controlled
- Fault Protection:
- Current Limiting (Adjustable), Over Temperature, Over Voltage, UVLO
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-VQFN (5x4)
TPS272C45BRHFR FAQ
1.How can I place an order for TPS272C45BRHFR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS272C45BRHFR 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 TPS272C45BRHFR reliable?
The price and inventory of TPS272C45BRHFR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS272C45BRHFR is usually 5 days.
3.What payment methods are accepted for TPS272C45BRHFR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS272C45BRHFR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS272C45BRHFR?
TPS272C45BRHFR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS272C45BRHFR 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 TPS272C45BRHFR?
For technical support, including TPS272C45BRHFR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS272C45BRHFR requirements.
6.How does Aetrix verify that TPS272C45BRHFR is sourced from the original manufacturer or authorized distributors?
All TPS272C45BRHFR 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 TPS272C45BRHFR meets industry standards.
7.What is the process for return or replacement of TPS272C45BRHFR?
All TPS272C45BRHFR units undergo pre-shipment inspection (PSI). If there is an issue with TPS272C45BRHFR, 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 TPS272C45BRHFR part is unused and in its original packaging.
Return procedure for TPS272C45BRHFR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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