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Texas Instruments TPS274C65CPWRHAR
- Part No.:
- TPS274C65CPWRHAR
- Manufacturer:
- Texas Instruments
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
TPS274C65CPWRHAR.pdf
- Description:
- 12-V TO 36-V 65-M FOUR-CHANNEL H
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
TPS274C65CPWRHAR from Texas Instruments is a quad-channel smart high-side switch with 72 mΩ RON, programmable current limiting (250 mA–1.9 A), integrated thermal shutdown, short-to-ground protection, and wire-break/short-to-supply diagnostics - designed for industrial digital output modules operating at 12–36 V supply.
For engineers reviewing the TPS274C65CPWRHAR datasheet, TPS274C65CPWRHAR pinout, TPS274C65CPWRHAR application, or TPS274C65CPWRHAR equivalent, this device delivers precise per-channel fault reporting via STx open-drain outputs, configurable latch/auto-retry behavior, and robust 24 V system-level load control with minimal PCB footprint in a 6 mm × 6 mm VQFN package.
Technical Context
The TPS274C65CPWRHAR integrates four independent high-side MOSFETs with charge-pump gate drive, internal 3.3 V regulator (VDD), and dedicated VS_FLT and STx fault signaling. Each channel features adjustable current limit set via ILIMCFG resistor, open-load detection in OFF state, and output clamp for inductive demagnetization.
It operates across –40°C to +125°C ambient, supports GPIO interface only (no current-sense output), and requires external 4.7 kΩ pull-up on each STx and VS_FLT pin. Fault handling is configured via LATCH pin (latch-on-fault vs. auto-retry) and DIAG_EN (diagnostic enable).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RON | 72 mΩ typical at 25°C (ensures <150 mW conduction loss at 2 A per channel) |
| Current Limit Range | 250 mA to 1.9 A (set by ILIMCFG resistor; protects against overload without external components) |
| Supply Voltage (VS) | 12 V to 36 V (supports standard 24 V industrial rails with 8.6 V undervoltage lockout) |
| Logic Supply (VDD) | 3.0 V to 5.5 V (internally regulated from VS or externally supplied; must derive from same VS rail) |
| Thermal Shutdown | 160°C to 210°C trip (with 20°C–35°C hysteresis; enables safe repeated fault cycling) |
| Diagnostic Outputs | VS_FLT (open-drain supply fault) + four STx pins (per-channel short-to-GND, short-to-supply, thermal, open-load) |
| Package | VQFN-40 (RHA), 6.0 mm × 6.0 mm, 0.5 mm pitch, wettable flank (supports automated optical inspection) |
Pinout & Package
VQFN-40 (RHA) package: 6.0 mm × 6.0 mm body, 0.5 mm pitch, exposed thermal pad connected to GND. Wettable flanks support solder joint inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN1–EN4 | Digital input (GPIO) | Per-channel enable; TTL/CMOS-compatible with internal pulldown (0.7–2.0 MΩ) |
| ST1–ST4 | Open-drain output | Per-channel fault status (short-to-GND, short-to-supply, thermal, open-load); requires external 4.7 kΩ pull-up to VDD |
| VS (pins 6,14–17,26,27,34–37) | Power input | Main 12–36 V switch supply rail; multiple pins reduce IR drop and improve current sharing |
| OUT1–OUT4 (dual pins each) | Power output | High-side switched output (72 mΩ RON); dual-pin configuration lowers inductance and improves current handling |
| VDD, REG_EN, DIAG_EN, ILIMCFG, LATCH | Analog/digital control | VDD: logic supply input; REG_EN: internal regulator enable; DIAG_EN: diagnostics on/off; ILIMCFG: 3-bit current limit setting; LATCH: fault mode selection (latch vs. auto-retry) |
| VS_FLT | Open-drain output | VS undervoltage fault indicator (active-low); requires external 4.7 kΩ pull-up to VDD |
| GND (pins 5,21,Exposed Pad) | Reference ground | System return path; exposed pad must be soldered to PCB GND plane for thermal and electrical performance |
Key Features
| Feature | Design Value |
|---|---|
| Quad-channel 72 mΩ RON | Enables 2 A DC load per channel with ≤300 mW power dissipation at full load and 25°C |
| Adjustable current limit (250 mA–1.9 A) | Reduces fault energy during shorts, minimizes PCB trace sizing, and avoids supply droop in multi-channel systems |
| Integrated output clamp | Demagnetizes inductive loads (e.g., solenoids, relays) without external flyback diodes |
| Wire-break and short-to-supply detection | Enables predictive maintenance in PLC I/O modules by identifying open circuits or backfeed conditions before failure escalation |
| Configurable fault response (latch/auto-retry) | LATCH pin selects between persistent shutdown (for safety-critical faults) or automatic recovery after tRETRY = 0.6 ms |
Applications
| Industrial Digital Output Modules | IOLink Master Ports |
|---|---|
|
Use Scenario: Driving 24 V discrete actuators (valves, indicators, small relays) in modular PLC backplanes with hot-swap capability. IC Role / Device Role / Timing Role: Quad high-side switch providing isolated, protected, and diagnosable load control per channel with <25 µs turn-on delay. Use Value: Eliminates need for discrete protection diodes, current-sense amplifiers, and fault logic - reducing BOM count by ≥7 components per channel. |
Use Scenario: Powering and monitoring up to four IOLink devices (sensors/actuators) from a single master port with real-time fault visibility. IC Role / Device Role / Timing Role: Smart power switch delivering regulated 24 V output with per-port short-circuit and open-wire detection. Use Value: Enables deterministic fault isolation and remote diagnostics without host MCU intervention - critical for Industry 4.0 predictive maintenance. |
| Sensor Power Supplies | Programmable Logic Controller (PLC) Backplane Outputs |
|
Use Scenario: Providing stable, protected 24 V bias to analog and digital sensors in harsh factory environments with EMI and voltage transients. IC Role / Device Role / Timing Role: High-side regulator replacement with integrated overcurrent, thermal, and wire-break protection. Use Value: Prevents sensor damage from cable faults while maintaining continuous operation of unaffected channels during single-point failures. |
Use Scenario: Replacing mechanical relay banks in compact PLC output cards requiring >1 million switching cycles and zero maintenance. IC Role / Device Role / Timing Role: Solid-state replacement for electromechanical relays, supporting PWM dimming and fast sequencing of loads. Use Value: Achieves 10× longer lifetime than relays, eliminates contact bounce, and enables synchronized multi-channel switching with <50 µs channel-to-channel skew. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar smart high-side switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS274C65CPH | Higher current limit range (290 mA–2.26 A); identical pinout, package, and feature set | Better suited for 2 A+ resistive loads (e.g., larger solenoids) where CP's 1.9 A max is marginal | Select CPH when design requires ≥2.0 A guaranteed current limit with same layout and firmware |
| NIS5132MN | Single-channel, 100 mΩ RON, no programmable current limit, no wire-break detection, SOIC-8 package | Lacks diagnostics, multi-channel integration, and fine-grained fault reporting - limited to basic overload protection | Use only for cost-sensitive, low-channel-count designs where diagnostics and space savings are not required |
Compared with TPS274C65CPH, the TPS274C65CPWRHAR offers tighter current limit resolution at lower thresholds (down to 250 mA) and reduced fault energy in sub-2 A applications; compared with NIS5132MN, it delivers four times the channel density, advanced diagnostics, and superior thermal management in half the area per channel.
Availability
TPS274C65CPWRHAR is available at Aetrix Electronics and suitable for industrial PLC systems, IOLink master ports, and sensor power supplies requiring stable component supply, long-term lifecycle support, and traceable sourcing for production programs.
Supply support for TPS274C65CPWRHAR 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 over 50 years of industrial-grade reliability validation.
The TPS274C65CPWRHAR belongs to TI's smart power switch portfolio, engineered specifically for high-density, diagnostic-capable industrial I/O modules demanding robust 24 V load control and predictive maintenance readiness.
FAQ
What is the maximum continuous load current per channel for the TPS274C65CPWRHAR?
The TPS274C65CPWRHAR supports 1.6 A continuous load current per channel at 85°C ambient temperature with all four channels enabled. At 25°C and with two channels enabled, it sustains up to 2.5 A per channel. These values are validated under JEDEC-standard PCB thermal conditions and include derating for RON increase at elevated junction temperature.
How does the TPS274C65CPWRHAR implement wire-break detection?
The TPS274C65CPWRHAR performs off-state wire-break detection by enabling an internal ~51 µA pull-up current on each OUTx pin when DIAG_EN is high and the channel is disabled. If the output is disconnected (open circuit), the voltage rises above 6 V, triggering a wire-break flag reported on the corresponding STx pin - enabling early detection of broken field wiring before system startup.
Can the TPS274C65CPWRHAR drive inductive loads without external clamping components?
Yes. The TPS274C65CPWRHAR integrates an active output clamp that safely dissipates inductive kickback energy during turn-off, eliminating the need for external flyback diodes. This clamp activates automatically when the channel is disabled and the output voltage exceeds the clamp threshold (33–50 V depending on VS), protecting both the switch and downstream circuitry.
What is the purpose of the REG_EN pin on the TPS274C65CPWRHAR?
The REG_EN pin controls the internal 3.3 V regulator that powers the logic circuitry of the TPS274C65CPWRHAR. When left floating, the regulator is enabled and derives VDD from VS. When tied to GND, the internal regulator disables and the device requires an external 3.0–5.5 V VDD supply - which must be derived from the same VS rail to maintain fault-safe operation and avoid cross-rail leakage paths.
Does the TPS274C65CPWRHAR support PWM dimming or motor control?
The TPS274C65CPWRHAR supports PWM operation up to 1 kHz with controlled slew rates (1.0–2.2 V/µs) and matching turn-on/turn-off timing (±41 µs). Its 72 mΩ RON and thermal shutdown ensure safe operation during repetitive switching, but it lacks dedicated PWM optimization features like adaptive dead-time control - making it suitable for basic LED dimming or solenoid sequencing, not high-frequency motor commutation.
TPS274C65CPWRHAR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 40-VFQFN Exposed Pad
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Type:
- General Purpose
- Number of Outputs:
- 1
- Ratio - Input:Output:
- 1:1
- Output Configuration:
- High Side
- Output Type:
- N-Channel
- Interface:
- -
- Voltage - Load:
- 12V ~ 36V
- Voltage - Supply (Vcc/Vdd):
- 3V ~ 5.5V
- Current - Output (Max):
- 1.9A
- Rds On (Typ):
- 72mOhm
- Input Type:
- Non-Inverting
- Features:
- Slew Rate Controlled, Status Flag
- Fault Protection:
- Current Limiting (Fixed), Over Temperature, Reverse Current, Short Circuit, UVLO
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 40-VQFN (6x6)
TPS274C65CPWRHAR FAQ
1.How can I place an order for TPS274C65CPWRHAR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS274C65CPWRHAR 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 TPS274C65CPWRHAR reliable?
The price and inventory of TPS274C65CPWRHAR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS274C65CPWRHAR is usually 5 days.
3.What payment methods are accepted for TPS274C65CPWRHAR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS274C65CPWRHAR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS274C65CPWRHAR?
TPS274C65CPWRHAR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS274C65CPWRHAR 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 TPS274C65CPWRHAR?
For technical support, including TPS274C65CPWRHAR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS274C65CPWRHAR requirements.
6.How does Aetrix verify that TPS274C65CPWRHAR is sourced from the original manufacturer or authorized distributors?
All TPS274C65CPWRHAR 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 TPS274C65CPWRHAR meets industry standards.
7.What is the process for return or replacement of TPS274C65CPWRHAR?
All TPS274C65CPWRHAR units undergo pre-shipment inspection (PSI). If there is an issue with TPS274C65CPWRHAR, 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 TPS274C65CPWRHAR part is unused and in its original packaging.
Return procedure for TPS274C65CPWRHAR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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