Texas Instruments TPS2837D

Overview

TPS2837D from Texas Instruments is an inverting-input, high-speed dual MOSFET driver IC for synchronous-buck power stages, delivering 2.4-A typical peak output current per channel, 50-ns max rise/fall times with 3.3-nF load, and adaptive dead-time control to prevent shoot-through-used in 3.3-V/3-A high-efficiency DC-DC converters with TL5001A controllers.

For engineers reviewing the TPS2837D datasheet, TPS2837D pinout, TPS2837D application, or TPS2837D equivalent, key selection criteria include TTL-compatible inverting input logic, bootstrap-capable high-side drive with internal Schottky diode, −40°C to 125°C junction temperature range, and SOIC-8 package compatibility with standard PCB layout practices for high-current power supplies.

Technical Context

The TPS2837D integrates independent high-side and low-side drivers with adaptive dead-time control tied to the DT terminal, which monitors the switching node (BOOTLO) to enforce non-overlapping gate drive timing. Its inverting input configuration means a high IN signal disables HIGHDR and enables LOWDR-critical for direct interface with PWM controllers lacking built-in dead-time logic.

It supports both floating bootstrap and ground-referenced high-side operation, with BOOT-to-PGND voltage up to 30 V and internal Schottky bootstrap diode eliminating external diode requirements. The driver's bipolar+MOSFET parallel output stage delivers 2.4-A peak sink/source at 12-V BOOT/VCC while maintaining <75-Ω output resistance across operating conditions.

Key Specifications

Pinout & Package

TPS2837D uses an 8-pin SOIC (D) package per JEDEC MS-012, with gull-wing leads, 1.27-mm pitch, and 5.00-mm × 6.20-mm body dimensions. Thermal pad not present; power dissipation rated at 600 mW at TA ≤ 25°C.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar MOSFET driver applications.

Compared with TPS2837DR, the TPS2837D shares full electrical and thermal performance but differs only in packaging format-making it suitable for manual assembly or small-batch builds. Against TPS2835, the TPS2837D trades advanced protection features for minimal pin count and lower idle power, better fitting cost-sensitive single-phase applications.

Availability

TPS2837D is available at Aetrix Electronics and suitable for server VRM power stages, industrial PLC DC-DC modules, and automotive ADAS camera power supplies requiring stable component supply and long-term industrial lifecycle support.

Supply support for TPS2837D 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 innovation in high-reliability power conversion solutions.

The TPS2837D belongs to TI's synchronous MOSFET driver product line, engineered specifically for high-efficiency, high-current buck regulators where shoot-through prevention, fast switching, and bootstrap simplicity are critical design requirements.

FAQ

What is the function of the DT pin on the TPS2837D?

The DT (dead-time) pin on the TPS2837D senses the voltage at the switching node (BOOTLO) to dynamically control turn-on timing between HIGHDR and LOWDR outputs. It prevents shoot-through by ensuring the low-side FET fully turns off before the high-side FET turns on-and vice versa-without requiring external timing components or firmware intervention. This hardware-based adaptive scheme is integral to the TPS2837D's reliable operation in synchronous-buck topologies.

Does the TPS2837D include an internal bootstrap diode?

Yes, the TPS2837D integrates a Schottky bootstrap diode between VCC and BOOT terminals. This eliminates the need for an external diode in bootstrap-configured high-side drive circuits, reducing component count, PCB area, and forward-voltage losses. The internal diode supports bootstrap capacitor charging during the low-side conduction phase and is rated for continuous operation up to 30 V BOOT-to-PGND differential.

What is the maximum recommended load capacitance for the TPS2837D outputs?

The TPS2837D is characterized for 3.3-nF load capacitance in its switching specifications, with rise/fall times ≤50 ns at 12 V. While Figure 9 shows operation up to 1000 nF, design best practice limits gate capacitance to ≤100 nF per output to maintain <100-ns propagation delay and avoid excessive current demand that could degrade efficiency or cause thermal stress. For larger FETs, external gate resistors should be used to manage dV/dt and EMI.

Can the TPS2837D drive both high-side and low-side N-channel MOSFETs?

Yes, the TPS2837D is explicitly designed to drive two N-channel MOSFETs in a synchronous-buck configuration: LOWDR drives the low-side FET source-to-PGND, while HIGHDR-when used with bootstrap biasing-drives the high-side FET gate above its drain potential. Its 2.4-A peak output current and 30-V BOOT-to-PGND rating enable robust gate charging even for high-threshold, high-Qg devices like the Si4410 referenced in the official application circuit.

Is the TPS2837D pin-compatible with the TPS2836D?

Yes, the TPS2837D is pin-compatible with the TPS2836D-both use identical SOIC-8 (D) packages and share identical pin functions and electrical ratings. The sole functional difference is input polarity: TPS2837D has an inverting input, while TPS2836D has a noninverting input. No PCB changes are required when substituting between them; only the input signal logic must be inverted in the system-level design.