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Texas Instruments TPS2831DR
- Part No.:
- TPS2831DR
- Manufacturer:
- Texas Instruments
- Category:
- Gate Drivers
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TPS2831DR.pdf
- Description:
- IC GATE DRVR HALF-BRIDGE 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,640
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Product details
Overview
TPS2831DR from Texas Instruments is an inverting-input, high-speed dual MOSFET driver for synchronous-buck power stages, delivering 2.4-A peak source/sink current per output, supporting 4.5–15-V supply voltage, and featuring adaptive dead-time control to prevent shoot-through. It enables high-efficiency, high-current DC/DC conversion in compact power supplies.
For engineers reviewing the TPS2831DR datasheet, TPS2831DR pinout, TPS2831DR application, or TPS2831DR equivalent, this page provides verified functional identity, SOIC-14 package mapping, confirmed inverting input logic, integrated Schottky bootstrap diode, CROWBAR overvoltage protection, and real-world timing specs (≤50-ns rise/fall, ≤100-ns propagation delay @ 3.3-nF load).
Technical Context
The TPS2831DR implements a dual-output gate driver architecture with independent high-side (floating bootstrap or ground-referenced) and low-side drivers, each rated for 2.4-A peak current. Its adaptive dead-time circuit monitors the DT terminal connected to the power FET junction to dynamically suppress simultaneous conduction.
Control logic includes ENABLE (global disable), SYNC (synchronous/nonsynchronous mode selection), and CROWBAR (low-side override for OVP). The inverting input (IN) distinguishes it from the noninverting TPS2830DR, and all digital inputs require ≥0.7×VCC for high-level recognition.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 4.5 V to 15 V - supports wide-input industrial and automotive DC/DC systems without external regulation. |
| Peak Output Current | 2.4 A typical - drives large gate capacitances of low-RDS(on) N-channel MOSFETs in high-current buck stages. |
| Rise/Fall Time | ≤50 ns max (high-side), ≤30 ns max (low-side) @ 3.3-nF load - enables >1-MHz switching with minimal transition losses. |
| Propagation Delay | ≤100 ns max (high-side), ≤80 ns max (low-side) @ 3.3-nF load - ensures tight timing alignment critical for phase-shifted or multiphase designs. |
| Operating Temperature | −40°C to 125°C virtual junction - validated for under-hood automotive and industrial ambient conditions. |
| Bootstrap Voltage Limit | 30 V max (BOOT to PGND) - accommodates high-voltage buck converters up to 24-V input rails. |
| Quiescent Supply Current | 3 mA typical - minimizes no-load power loss in always-on or standby power architectures. |
Pinout & Package
TPS2831DR is packaged in a 14-pin SOIC (D package), 1.75-mm maximum height, RoHS-compliant, with NIPDAU lead finish and moisture sensitivity level (MSL) Level-1 (unlimited floor life at ≤30°C/60% RH).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - ENABLE | Digital input | Global enable/disable: low = both drivers off; required ≥0.7×VCC for active-high assertion. |
| 2 - IN | Digital input | Inverting logic input: high on IN forces LOWDR high and HIGHDR low - defines complementary drive polarity. |
| 3 - CROWBAR | Digital input | OVP override: low forces LOWDR on and HIGHDR off regardless of IN/ENABLE/SYNC - clamps output during high-side FET failure. |
| 4, 9, 13 - NC | No internal connection | Unbonded pins; must remain unconnected and unstubbed to avoid parasitic coupling or EMI. |
| 5 - SYNC | Digital input | Synchronous rectifier control: high = low-side active; low = low-side disabled (nonsynchronous operation). |
| 6 - DT | Analog input | Dead-time sensing node: connected to power FET junction to detect voltage transitions and enforce nonoverlap timing. |
| 7 - PGND | Power ground | High-current return path for driver outputs; must be routed separately from signal ground to minimize noise coupling. |
| 8 - VCC | Supply input | Main driver supply; requires local 1-µF ceramic bypass capacitor directly to PGND for stable gate drive. |
| 10 - LOWDR | Output | Low-side gate driver output: sinks/sources up to 2.4 A to drive N-channel MOSFET gates. |
| 11 - BOOTLO | Output | Bootstrap return node: connects to source of high-side FET and low-side drain - forms floating supply reference. |
| 12 - HIGHDR | Output | High-side gate driver output: delivers 2.4-A peak current referenced to BOOTLO for bootstrapped operation. |
| 14 - BOOT | Input | Bootstrap supply input: accepts charge from internal Schottky diode; requires 0.1–1 µF ceramic capacitor to BOOTLO. |
Key Features
| Feature | Design Value |
|---|---|
| Inverting Input Logic | Ensures direct compatibility with PWM controllers that output inverted gate signals, eliminating external inverters in feedback-coupled topologies. |
| Adaptive Dead-Time Control | Monitors DT node voltage to automatically adjust turn-on delays, preventing shoot-through across power FETs without fixed timing components. |
| Integrated Schottky Bootstrap Diode | Eliminates need for external bootstrap diode, reducing BOM count and PCB area while improving charge efficiency and thermal performance. |
| CROWBAR Overvoltage Protection | Hardware-level fault response: asserts low-side FET independently of control logic to clamp output during high-side short-circuit events. |
| Thermally Enhanced SOIC Package | SOIC-14 with optimized thermal pad layout supports >1.5-W continuous dissipation at 70°C ambient, enabling high-power density designs. |
Applications
| Server VRM | Industrial PLC Power |
|---|---|
|
Use Scenario: 3.3-V/3-A synchronous-buck stage in a 1U server voltage regulator module, powered from 5-V or 12-V intermediate bus. IC Role / Device Role / Timing Role: Dual gate driver providing complementary, shoot-through-protected drive to Si4410 MOSFETs with adaptive dead-time and CROWBAR fault response. Use Value: Achieves 94% efficiency at 1-A load and 93% at full 3-A load, with <100-ns propagation delay ensuring precise phase alignment in multi-phase configurations. |
Use Scenario: 24-V input to 5-V/2-A isolated auxiliary supply in programmable logic controller backplane. IC Role / Device Role / Timing Role: High-side/low-side driver enabling fast-switching buck converter with SYNC-controlled nonsynchronous fallback during light-load conditions. Use Value: Supports 4.5–15-V VCC range and −40°C to 125°C operation, meeting extended temperature requirements for factory-floor deployment. |
| Automotive ADAS Camera Module | Telecom Point-of-Load |
|
Use Scenario: Compact 12-V to 1.2-V/6-A core supply for image signal processor in rear-view camera ECU. IC Role / Device Role / Timing Role: Inverting-input driver synchronizing with TI TL5001A PWM controller, using BOOT/BOOTLO for floating high-side drive. Use Value: 2.4-A peak current and ≤50-ns rise time support high-frequency (>500-kHz) operation, minimizing output filter size and EMI. |
Use Scenario: 48-V to 3.3-V/10-A PoL converter in 5G base station radio unit requiring high reliability and thermal margin. IC Role / Device Role / Timing Role: Dual-output driver operating in synchronous mode with adaptive dead-time, interfacing with discrete 30-V MOSFETs. Use Value: Internal Schottky bootstrap diode reduces component count and improves thermal stability versus discrete diode solutions in thermally constrained enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar MOSFET driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS2830DR | Noninverting input logic; identical pinout, timing, and drive strength. | Requires inverted PWM signal source or external inverter; unsuitable where controller outputs match TPS2831DR's inverting expectation. | Select when system uses noninverting PWM controllers (e.g., UC384x family) and timing/thermal specs align. |
| TPS2835PWP | TTL-compatible inputs (vs. CMOS), same inverting logic, HTSSOP PowerPAD package. | Higher thermal performance (2.07°C/W junction-to-case) but requires different PCB footprint and reflow profile (MSL-2). | Choose for thermally demanding applications where SOIC-14 thermal resistance is insufficient and board space allows TSSOP layout. |
Compared with TPS2830DR and TPS2835PWP, the TPS2831DR uniquely combines inverting CMOS input compatibility, SOIC-14 manufacturability, and integrated Schottky bootstrap in a single production-proven package-making it optimal for cost-sensitive, high-volume synchronous buck designs requiring minimal external components.
Availability
TPS2831DR is available at Aetrix Electronics and suitable for server VRMs, industrial PLC power supplies, automotive ADAS modules, and telecom point-of-load converters requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for TPS2831DR 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 decades of expertise in high-reliability power IC design.
The TPS283x series was engineered specifically for high-efficiency synchronous-buck DC/DC conversion in computing, industrial, and automotive applications-emphasizing robust gate drive, fault protection, and thermal resilience.
FAQ
What is the input logic type of the TPS2831DR?
The TPS2831DR features an inverting input (IN) - a high logic level on the IN pin results in a low output on HIGHDR and a high output on LOWDR. This matches controllers that generate inverted gate drive signals, eliminating the need for external inverters in many synchronous buck implementations. The TPS2831DR datasheet explicitly confirms this behavior, distinguishing it from the noninverting TPS2830DR.
Does the TPS2831DR include an internal bootstrap diode?
Yes, the TPS2831DR integrates a Schottky bootstrap diode between VCC and BOOT terminals. This eliminates the need for an external diode in bootstrap-based high-side drive configurations, reducing component count, PCB area, and potential failure points. The datasheet specifies "Internal Schottky Bootstrap Diode" in its feature list and confirms its use in the functional block diagram and terminal description for BOOT.
What is the maximum allowable voltage on the BOOT pin of the TPS2831DR?
The absolute maximum rating for BOOT to PGND is 30 V. This limit applies when the high-side driver is active and defines the upper bound for the bootstrap capacitor voltage swing. Exceeding 30 V risks permanent damage. The TPS2831DR datasheet lists this value in the Absolute Maximum Ratings table and reinforces it in the BOOT terminal description under "detailed description."
How does the CROWBAR function protect the system in the TPS2831DR?
The CROWBAR function in the TPS2831DR overrides normal gate drive logic: when the CROWBAR pin is driven low, the low-side driver (LOWDR) turns on and the high-side driver (HIGHDR) turns off - regardless of ENABLE, SYNC, or IN states. This clamps the output to ground during high-side FET short-circuit failures, preventing destructive overvoltage at the load. The datasheet describes this as "over-voltage protection against faulted high-side power FETs."
Is the TPS2831DR pin-compatible with other devices in the TPS283x family?
Yes, the TPS2831DR shares identical pinout and package (SOIC-14) with TPS2830DR, TPS2832DR, and TPS2834DR. All variants use the same D-package footprint and terminal assignments, enabling drop-in replacement where functional differences (e.g., inverting vs. noninverting input, presence of ENABLE/SYNC/CROWBAR) are acceptable. The datasheet's "Terminal Functions" table and package drawings confirm consistent pin numbering across the family.
TPS2831DR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Programmable:
- Not Verified
- Driven Configuration:
- Half-Bridge
- Channel Type:
- Synchronous
- Number of Drivers:
- 2
- Gate Type:
- N-Channel MOSFET
- Voltage - Supply:
- 4.5V ~ 15V
- Logic Voltage - VIL, VIH:
- -
- Current - Peak Output (Source, Sink):
- 2.7A, 2.4A
- Input Type:
- Inverting
- High Side Voltage - Max (Bootstrap):
- 28 V
- Rise / Fall Time (Typ):
- 50ns, 50ns
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
TPS2831DR FAQ
1.How can I place an order for TPS2831DR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS2831DR 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 TPS2831DR reliable?
The price and inventory of TPS2831DR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS2831DR is usually 5 days.
3.What payment methods are accepted for TPS2831DR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS2831DR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS2831DR?
TPS2831DR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS2831DR 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 TPS2831DR?
For technical support, including TPS2831DR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS2831DR requirements.
6.How does Aetrix verify that TPS2831DR is sourced from the original manufacturer or authorized distributors?
All TPS2831DR 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 TPS2831DR meets industry standards.
7.What is the process for return or replacement of TPS2831DR?
All TPS2831DR units undergo pre-shipment inspection (PSI). If there is an issue with TPS2831DR, 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 TPS2831DR part is unused and in its original packaging.
Return procedure for TPS2831DR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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