My Inquiry
My Account
Texas Instruments TPS2831D
- Part No.:
- TPS2831D
- Manufacturer:
- Texas Instruments
- Category:
- Gate Drivers
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TPS2831D.pdf
- Description:
- IC GATE DRVR HALF-BRIDGE 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,056
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS2831D 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 single-phase power supplies.
For engineers reviewing the TPS2831D datasheet, TPS2831D pinout, TPS2831D application, or TPS2831D equivalent, key selection criteria include its inverting input logic, integrated Schottky bootstrap diode, CROWBAR overvoltage protection, SYNC-controlled synchronous/nonsynchronous mode, and SOIC-14 thermal performance at −40°C to 125°C virtual junction temperature.
Technical Context
The TPS2831D 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 into 3.3-nF loads. Its adaptive dead-time circuit monitors the DT terminal connected to the power FET junction to dynamically delay turn-on and eliminate shoot-through during switching transitions.
Control logic includes ENABLE (global disable), SYNC (low-side enable/disable for synchronous/nonsynchronous operation), and CROWBAR (forced low-side activation for OVP clamping). Input threshold voltages are referenced to VCC (VIH ≥ 0.7VCC, VIL ≤ 1 V), and all digital inputs accept CMOS-level signals.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 4.5 V to 15 V - supports wide-input industrial and telecom DC/DC converters without external regulation. |
| Peak Output Current | 2.4 A source/sink per driver - drives low-Rds(on) N-channel MOSFETs in high-current (>3 A) buck stages. |
| Rise/Fall Time | ≤50 ns (HIGHDR), ≤30 ns (LOWDR) at 12 V - enables >1 MHz switching with minimal switching loss. |
| Propagation Delay | ≤100 ns (HIGHDR low), ≤70 ns (LOWDR low) - ensures tight timing control for high-frequency PWM controllers. |
| Operating Temperature | −40°C to 125°C virtual junction - validated for under-hood automotive and industrial power modules. |
| Bootstrap Voltage Limit | 30 V max BOOT-to-PGND - accommodates high-voltage buck applications up to 28 V input. |
| Quiescent Supply Current | 3 mA typical at 12 V - minimizes no-load power loss in always-on power management systems. |
Pinout & Package
TPS2831D is housed in a 14-pin SOIC (D) package with 1.27-mm pitch, 8.75 mm × 3.91 mm body, and 1.75 mm max height. Thermal performance is characterized at 7.49 mW/°C derating above 25°C ambient.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - ENABLE | Digital input | Global enable: pulls both drivers low when logic low; required for safe startup/shutdown sequencing. |
| 2 - IN | Inverting input | Drives LOWDR high and HIGHDR low on logic high - matches inverted PWM outputs (e.g., TL5001A). |
| 3 - CROWBAR | OVP override input | Forces LOWDR high and HIGHDR low when asserted low - 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. |
| 5 - SYNC | Synchronous mode control | Disables LOWDR when low - configures nonsynchronous operation using external diode rectification. |
| 6 - DT | Dead-time sensing node | Connected to FET drain-source junction; enables adaptive delay to prevent cross-conduction. |
| 7 - PGND | Power ground | High-current return path for driver outputs; must be tied directly to MOSFET source/power ground plane. |
| 8 - VCC | Supply input | Requires local 1-µF ceramic bypass capacitor to PGND - critical for stable gate drive under transient load. |
| 10 - LOWDR | Low-side gate driver output | Drives N-channel MOSFET source; capable of 3.5-A sink at 12 V - suitable for Si4410-class FETs. |
| 11 - BOOTLO | Bootstrap return node | Connects to high-side/low-side FET junction - forms return path for bootstrap capacitor charge/discharge loop. |
| 12 - HIGHDR | High-side gate driver output | Drives N-channel MOSFET gate; 2.4-A peak capability enables fast turn-on of 10-nC gate charge FETs. |
| 14 - BOOT | Bootstrap supply terminal | Accepts 0.1–1 µF ceramic capacitor to BOOTLO - internal Schottky diode eliminates external diode need. |
Key Features
| Feature | Design Value |
|---|---|
| Inverting input logic | Matches inverted PWM controller outputs (e.g., TL5001A), eliminating external inverters and reducing BOM count. |
| Adaptive dead-time control | Monitors DT node voltage to automatically adjust nonoverlap time - prevents shoot-through across varying load/temperature. |
| Integrated Schottky bootstrap diode | Eliminates external diode, reduces board area by ~3 mm², and improves bootstrap efficiency by lowering forward drop. |
| CROWBAR overvoltage protection | Hardware-level clamp that overrides normal logic to activate low-side FET - protects downstream loads during high-side short. |
| SYNC-controlled synchronous mode | Enables seamless transition between synchronous rectification (high efficiency) and diode-based operation (light-load optimization). |
Applications
| Server VRM | Industrial PLC Power |
|---|---|
|
Use Scenario: 3.3-V/3-A point-of-load regulator in 1U server motherboard, powered from 12-V intermediate bus. IC Role / Device Role / Timing Role: Dual gate driver translating TL5001A PWM into high-current gate signals for Si4410 high/low-side FETs; manages dead-time and OVP. Use Value: Achieves 94% efficiency at 1-A load and maintains stability under dynamic CPU load transients due to <100-ns propagation delay. |
Use Scenario: 5-V/2-A isolated auxiliary supply in programmable logic controller, operating continuously at 65°C ambient. IC Role / Device Role / Timing Role: High-side/low-side driver enabling synchronous buck topology with CROWBAR fault response for field I/O protection. Use Value: −40°C to 125°C junction rating and 7.49 mW/°C thermal derating ensure reliable operation without forced cooling in sealed enclosures. |
| Telecom DC/DC Module | Automotive Body Control Unit |
|
Use Scenario: 48-V to 5-V step-down converter in optical line terminal, requiring high efficiency and EMI robustness. IC Role / Device Role / Timing Role: Gate driver with adaptive dead-time and tight rise/fall times (<50 ns) minimizing switching noise in dense RF-sensitive layouts. Use Value: 50-ns max rise/fall times reduce dV/dt-induced EMI, while SOIC-14 package simplifies thermal management vs. QFN alternatives. |
Use Scenario: 12-V to 3.3-V power rail for microcontroller and CAN transceiver in body control module, exposed to engine bay temperature cycling. IC Role / Device Role / Timing Role: Inverting-input driver interfacing with automotive-grade PWM controller; CROWBAR provides fail-safe OVP during alternator surge events. Use Value: Internal Schottky bootstrap diode eliminates discrete component failure mode, improving long-term reliability in high-vibration environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual high-side/low-side MOSFET driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS2831PWP | TSSOP PowerPAD package with 2.07 °C/W junction-case thermal resistance vs. SOIC's higher thermal impedance. | Better thermal performance in space-constrained, high-power-density designs; requires different PCB land pattern and reflow profile (MSL-2). | Select TPS2831PWP when board area is limited and thermal headroom is marginal; otherwise TPS2831D offers simpler assembly and legacy compatibility. |
| TPS2835D | TTL-compatible inputs (vs. CMOS), identical pinout and features including ENABLE/SYNC/CROWBAR. | Required when driving from TTL-level controllers or legacy logic families; not interoperable with CMOS-only signal chains. | Choose TPS2835D only if system-level logic voltage levels mandate TTL thresholds; otherwise TPS2831D provides broader noise margin with CMOS inputs. |
Compared with TPS2831PWP, the TPS2831D offers easier hand-soldering and standard SOIC handling but trades off thermal performance; compared with TPS2835D, it delivers superior noise immunity via CMOS input thresholds but requires compatible controller output logic families.
Availability
TPS2831D is available at Aetrix Electronics and suitable for server VRMs, industrial PLC power supplies, telecom DC/DC modules, and automotive body control units requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TPS2831D 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, with decades of expertise in high-reliability power conversion solutions.
The TPS283x family was designed specifically for high-performance synchronous-buck power stages driven by external PWM controllers, targeting efficiency-critical applications where shoot-through prevention and fast gate drive are essential.
FAQ
What is the input logic polarity of the TPS2831D?
The TPS2831D features an inverting input: a logic-high signal on the IN pin forces LOWDR high and HIGHDR low. This matches inverted PWM outputs from controllers like the TL5001A and eliminates the need for external inverters in many designs. The TPS2830D variant provides noninverting logic for direct interface with standard PWM sources.
How does the CROWBAR function protect the system in the TPS2831D?
The CROWBAR function in the TPS2831D overrides normal gate drive logic when the CROWBAR pin is pulled low, immediately turning on the low-side MOSFET and turning off the high-side MOSFET. This action clamps the output voltage during high-side FET failures (e.g., short-circuit), preventing overvoltage damage to downstream loads such as microcontrollers or sensors.
Can the TPS2831D drive both high-side and low-side N-channel MOSFETs simultaneously?
Yes - the TPS2831D is explicitly designed to drive two N-channel MOSFETs in a synchronous-buck configuration: HIGHDR controls the high-side FET via bootstrap operation, while LOWDR drives the low-side FET referenced to PGND. Its 2.4-A peak current rating per output supports fast switching of FETs with gate charges up to ~10 nC.
What is the maximum allowable voltage on the BOOT pin of the TPS2831D?
The absolute maximum voltage from BOOT to PGND in the TPS2831D is 30 V. This rating allows safe operation in buck converters with input voltages up to 28 V, provided the bootstrap capacitor and associated layout maintain voltage integrity. Exceeding 30 V risks permanent damage to the internal high-side driver circuitry.
Does the TPS2831D require an external bootstrap diode?
No - the TPS2831D integrates a Schottky bootstrap diode, eliminating the need for an external diode in the bootstrap charging path. This reduces component count, saves PCB area, and improves reliability by removing a common failure point. A 0.1–1 µF ceramic capacitor remains required between BOOT and BOOTLO terminals.
TPS2831D Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- 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
TPS2831D FAQ
1.How can I place an order for TPS2831D through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS2831D 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 TPS2831D reliable?
The price and inventory of TPS2831D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS2831D is usually 5 days.
3.What payment methods are accepted for TPS2831D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS2831D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS2831D?
TPS2831D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS2831D 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 TPS2831D?
For technical support, including TPS2831D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS2831D requirements.
6.How does Aetrix verify that TPS2831D is sourced from the original manufacturer or authorized distributors?
All TPS2831D 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 TPS2831D meets industry standards.
7.What is the process for return or replacement of TPS2831D?
All TPS2831D units undergo pre-shipment inspection (PSI). If there is an issue with TPS2831D, 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 TPS2831D part is unused and in its original packaging.
Return procedure for TPS2831D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS2831D Tags
-
ZXGD3009E6TA
Diodes Incorporated
-
1EDN7512BXTSA1
Infineon Technologies
-
UCC27517DBVR
Texas Instruments
-
MCP1416T-E/OT
Microchip Technology
-
MCP1402T-E/OT
Microchip Technology
-
MCP1415T-E/OT
Microchip Technology
-
MCP1401T-E/OT
Microchip Technology
-
IX4428NTR
Littelfuse Inc.
-
IRS2005STRPBF
Infineon Technologies
-
IRS2008STRPBF
Infineon Technologies
-
IX4310TTR
Littelfuse Inc.
-
2EDN7524RXTMA1
Infineon Technologies
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
