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Texas Instruments TPS2831PWPR
- Part No.:
- TPS2831PWPR
- Manufacturer:
- Texas Instruments
- Category:
- Gate Drivers
- Package:
- 14-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TPS2831PWPR.pdf
- Description:
- IC GATE DRV HALF-BRIDGE 14HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,286
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Product details
Overview
TPS2831PWPR from Texas Instruments is an inverting-input, high-side/low-side 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, featuring adaptive dead-time control and internal Schottky bootstrap diode, and optimized for high-current single-phase DC/DC converters up to 3 A at 3.3 V.
For engineers reviewing the TPS2831PWPR datasheet, TPS2831PWPR pinout, TPS2831PWPR application, or TPS2831PWPR equivalent, key selection considerations include inverting logic input compatibility, CROWBAR overvoltage protection behavior, thermal performance in HTSSOP PowerPAD package, and dead-time configuration via DT terminal connection to power FET junction.
Technical Context
The TPS2831PWPR implements adaptive dead-time control by monitoring the DT terminal connected to the high-side/low-side FET drain-source node, preventing shoot-through during switching transitions. Its inverting input (IN) complements noninverting TPS2830 variants, enabling direct interface with PWM controllers requiring inverted gate drive polarity.
It integrates a CROWBAR function that forces low-side FET conduction upon external OVP signal assertion, clamping output voltage during high-side FET fault conditions. The internal Schottky bootstrap diode enables efficient floating high-side drive without external diode, while SYNC input allows dynamic reconfiguration between synchronous and nonsynchronous operation modes.
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 supplies without external regulation. |
| Peak Output Current | 2.4 A typical - drives large gate capacitance of low-RDS(on) N-channel MOSFETs in high-current buck stages. |
| Rise/Fall Time | ≤50 ns (high-side), ≤30 ns (low-side) - ensures fast switching transitions with 3.3-nF load, minimizing switching losses. |
| Propagation Delay | ≤100 ns max (high-side), ≤70 ns max (low-side) - enables precise timing control in high-frequency (>200 kHz) converters. |
| Operating Temperature | −40°C to 125°C virtual junction - validated for automotive under-hood and industrial ambient environments. |
| Bootstrap Voltage Limit | 30 V max (BOOT to PGND) - accommodates high-voltage buck applications with 24-V or 48-V input rails. |
| Quiescent Supply Current | 3 mA typical - reduces standby power loss in always-on power management systems. |
Pinout & Package
TPS2831PWPR is housed in a thermally enhanced 14-pin HTSSOP PowerPAD (PWP) package with exposed thermal pad for improved heat dissipation. Package dimensions: 4.4 mm × 5.0 mm × 1.2 mm, 0.65-mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 ENABLE | Digital enable input | Drives both outputs low when asserted low; required for safe startup/shutdown sequencing. |
| 2 IN | Inverting logic input | High-level input disables high-side and enables low-side; matches inverted PWM signals from TL5001A or similar controllers. |
| 3 CROWBAR | OVP override input | Low assertion forces low-side FET ON and high-side OFF regardless of IN/SYNC state - critical for fault containment. |
| 4, 9, 13 NC | No internal connection | Unbonded pins; must be left floating or grounded per layout best practices to avoid noise coupling. |
| 5 SYNC | Synchronous rectifier control | High enables low-side synchronous rectification; low disables low-side drive for nonsynchronous (diode-OR) operation. |
| 6 DT | Dead-time sensing node | Connected to high/low FET junction; enables adaptive delay to prevent shoot-through without fixed timing components. |
| 7 PGND | Power ground reference | Separate from signal ground; must be tied directly to FET source nodes and thermal pad for low-inductance return path. |
| 8 VCC | Main supply input | Requires local 1-µF ceramic bypass capacitor to PGND; powers internal logic and drivers. |
| 10 LOWDR | Low-side gate driver output | Directly drives gate of low-side N-MOSFET; rated for 2.4-A peak sink/source into capacitive loads. |
| 11 BOOTLO | Bootstrap return node | Connects to high/low FET junction; forms return path for bootstrap capacitor and defines high-side floating ground. |
| 12 HIGHDR | High-side gate driver output | Drives gate of high-side N-MOSFET using bootstrap voltage; supports 30-V max BOOT-to-PGND swing. |
| 14 BOOT | Bootstrap supply terminal | Connects to bootstrap capacitor top; internal Schottky diode charges capacitor during low-side conduction phase. |
Key Features
| Feature | Design Value |
|---|---|
| Inverting Input Logic | Matches inverted PWM outputs from common controllers (e.g., TL5001A), eliminating need for external inverters in buck designs. |
| Adaptive Dead-Time Control | Eliminates external dead-time resistors/capacitors by dynamically adjusting turn-on delays based on actual FET junction voltage. |
| Integrated Schottky Bootstrap Diode | Reduces BOM count and improves bootstrap efficiency vs. discrete diode solutions, especially at high duty cycles. |
| CROWBAR Overvoltage Protection | Provides hardware-level fault response: overrides all control logic to clamp output via low-side FET, protecting downstream loads. |
| Thermally Enhanced PowerPAD | Exposed thermal pad lowers junction-to-board thermal resistance to 2.07 °C/W, enabling sustained 2.4-A drive at 125°C ambient. |
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 controlling Si4410 N-MOSFETs in synchronous buck stage; provides precise dead-time and fast edge rates for >93% efficiency. Use Value: Inverting input eliminates level-shifter requirement; CROWBAR protects CPU core from overvoltage during high-side FET short failure. |
Use Scenario: 5-V/2-A isolated auxiliary supply in programmable logic controller, operating continuously at 60°C ambient. IC Role / Device Role / Timing Role: High-side/low-side driver for 27-µH buck inductor stage; thermal PAD enables reliable operation without heatsink. Use Value: Adaptive DT prevents shoot-through across wide input range (4.5–12 V); SYNC pin allows firmware-controlled mode switching for light-load efficiency tuning. |
| Telecom DC/DC Module | Automotive ADAS ECU |
Use Scenario: 3.3-V/2.5-A power rail in compact telecom transceiver module with strict EMI limits. IC Role / Device Role / Timing Role: Gate driver with <50-ns rise/fall times and tight propagation delay matching minimizes switching noise and jitter. Use Value: Internal Schottky bootstrap diode reduces layout sensitivity; BOOTLO/DT routing guidelines ensure stable dead-time under transient load steps. |
Use Scenario: 1.8-V/1.5-A core supply for radar processor in automotive ADAS ECU, qualified for −40°C to 125°C junction. IC Role / Device Role / Timing Role: Robust MOSFET driver with guaranteed operation across full temperature range and 15-V max supply. Use Value: CROWBAR function provides fail-safe response to high-side FET failure in safety-critical domain; MSL-2 rating supports automated SMT assembly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual MOSFET driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS2831D | Same functional spec, but in SOIC-14 (D) package without PowerPAD; higher thermal resistance (7.49 mW/°C derating). | Limited to lower-power or forced-air-cooled applications due to reduced thermal performance. | Select when board space permits larger SOIC footprint and thermal load is ≤1.5 A continuous. |
| TPS2835PWPR | TTL-compatible inputs (vs. CMOS on TPS2831PWPR); identical pinout, package, and driver specs. | Required when interfacing with legacy TTL-output PWM controllers or logic families. | Choose only if system-level logic voltage levels mandate TTL thresholds; otherwise CMOS input offers wider noise margin. |
Compared with TPS2831D, TPS2831PWPR delivers superior thermal management for high-current density layouts; compared with TPS2835PWPR, it provides higher noise immunity and lower input current in CMOS-mode operation.
Availability
TPS2831PWPR is available at Aetrix Electronics and suitable for high-current DC/DC converters, industrial PLC power supplies, and automotive ADAS ECUs requiring stable component supply and long-term production continuity.
Supply support for TPS2831PWPR 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 synchronous-buck power stages in high-efficiency, high-current applications where integrated dead-time control, robust fault protection, and thermal performance are critical.
FAQ
What is the logic polarity of the TPS2831PWPR input?
The TPS2831PWPR features an inverting input: a high-level signal on the IN pin disables the high-side driver and enables the low-side driver. This matches controllers like the TL5001A that output inverted PWM waveforms, eliminating the need for external inverters in standard buck configurations. The TPS2831PWPR's inverting behavior is fixed and cannot be configured as noninverting - use TPS2830PWPR for noninverting operation.
How does the CROWBAR function protect the system when the high-side FET fails?
When the CROWBAR pin is driven low (e.g., by an external OVP circuit detecting overvoltage), the TPS2831PWPR immediately forces the LOWDR output high and HIGHDR low - overriding all other control inputs including IN and SYNC. This turns on the low-side FET as a clamp, shunting excess energy and limiting output voltage rise. The TPS2831PWPR's CROWBAR action is hardware-based and operates within nanoseconds, providing deterministic fault containment independent of controller response time.
Can the TPS2831PWPR be used with a bootstrap capacitor only, or is an external bootstrap diode required?
No external bootstrap diode is required for the TPS2831PWPR because it integrates a Schottky diode internally between VCC and BOOT. This diode charges the bootstrap capacitor during low-side conduction, enabling floating high-side drive. External diodes are unnecessary and may degrade performance; the recommended 0.1–1 µF ceramic capacitor must connect directly between BOOT and BOOTLO terminals, with a 1-MΩ discharge resistor across it for safe power-down.
What is the purpose of the DT pin, and how must it be connected?
The DT (dead-time) pin on the TPS2831PWPR senses the voltage at the junction of the high-side and low-side power FETs. It must be connected directly to that node to enable adaptive dead-time control, which prevents shoot-through by delaying high-side turn-on until the low-side FET is fully off and vice versa. Incorrect routing (e.g., long traces or RC filtering) compromises timing accuracy; TI recommends shortest possible trace with no vias or stubs between DT and the FET junction.
Is the TPS2831PWPR pin-compatible with other devices in the TPS283x family?
Yes, the TPS2831PWPR shares identical pinout and package (HTSSOP-14 PWP) with TPS2830PWPR, TPS2835PWPR, and TPS2834PWPR. All variants support the same PCB layout, thermal pad soldering, and peripheral component placement. Functional differences - such as inverting vs. noninverting input (TPS2831 vs. TPS2830) or CMOS vs. TTL input thresholds (TPS2831 vs. TPS2835) - are implemented internally and do not affect mechanical or electrical connectivity.
TPS2831PWPR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-PowerTSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- 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-HTSSOP
TPS2831PWPR FAQ
1.How can I place an order for TPS2831PWPR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS2831PWPR 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 TPS2831PWPR reliable?
The price and inventory of TPS2831PWPR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS2831PWPR is usually 5 days.
3.What payment methods are accepted for TPS2831PWPR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS2831PWPR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS2831PWPR?
TPS2831PWPR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS2831PWPR 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 TPS2831PWPR?
For technical support, including TPS2831PWPR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS2831PWPR requirements.
6.How does Aetrix verify that TPS2831PWPR is sourced from the original manufacturer or authorized distributors?
All TPS2831PWPR 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 TPS2831PWPR meets industry standards.
7.What is the process for return or replacement of TPS2831PWPR?
All TPS2831PWPR units undergo pre-shipment inspection (PSI). If there is an issue with TPS2831PWPR, 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 TPS2831PWPR part is unused and in its original packaging.
Return procedure for TPS2831PWPR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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