Texas Instruments TPS2814D

Overview

TPS2814D from Texas Instruments is a dual 2-input AND gate MOSFET driver with one inverting input per channel, designed for high-speed switching of n-channel and p-channel power MOSFETs. It delivers 2-A peak output current at VCC = 14 V, achieves ≤25-ns rise/fall times and ≤40-ns propagation delay (1-nF load), and operates across 4 V to 14 V supply voltage within −40°C to 125°C ambient range - used in synchronous buck regulators and motor gate-drive stages.

For engineers reviewing the TPS2814D datasheet, TPS2814D pinout, TPS2814D application, or TPS2814D equivalent, key selection criteria include its dual AND logic with single inversion per driver, absence of internal regulator, SOIC-8 package compatibility, and verified performance driving Hex-3 MOSFETs in high-frequency DC/DC converters.

Technical Context

The TPS2814D implements two independent AND-gate drivers, each accepting two inputs: one noninverting (1IN1, 2IN1) and one inverting (1IN2, 2IN2), producing outputs 1OUT = 1IN1 • 1IN2 and 2OUT = 2IN1 • 2IN2. Its CMOS input stage features Schmitt-trigger thresholds (≈1/3 VCC low-to-high, ≈2/3 VCC high-to-low) and <5 µA supply current.

No internal regulator is present - unlike TPS2811/12/13 - so REG_IN and REG_OUT pins are unconnected. Output stage uses bipolar-MOSFET parallel architecture to ensure rail-to-rail swing (0.18 V low-level, 9.9 V high-level at 1 mA) and robust sink/source capability into capacitive gate loads.

Key Specifications

Pinout & Package

TPS2814D is housed in an 8-pin SOIC (D) package with standard 1.27-mm pitch, JEDEC MS-012AC compliant, and rated for 730 mW power dissipation at TA ≤ 25°C (derating 5.84 mW/°C above).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual AND-gate MOSFET driver applications.

Compared with TPS2815D and UCC27524AD, the TPS2814D uniquely integrates AND logic with single inversion per channel in SOIC-8 - reducing component count and propagation uncertainty versus external logic solutions, while offering lower peak current than UCC27524AD but tighter timing control than NAND-based alternatives.

Availability

TPS2814D is available at Aetrix Electronics and suitable for synchronous buck regulators, motor gate-drive stages, isolated flyback interfaces, and industrial PLC output modules requiring stable component supply and long-term production continuity.

Supply support for TPS2814D 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 delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and communications markets.

The TPS28xx series was engineered specifically for high-speed, high-current MOSFET gate driving in power conversion systems - emphasizing low propagation delay, rail-to-rail output swing, and integrated logic flexibility to simplify PWM interface design.

FAQ

What logic function does the TPS2814D implement?

The TPS2814D implements two independent 2-input AND gates, each with one noninverting input (1IN1, 2IN1) and one inverting input (1IN2, 2IN2). Its outputs are defined as 1OUT = 1IN1 • 1IN2 and 2OUT = 2IN1 • 2IN2. This configuration enables hardware-enforced dead-time control and safety interlocks without external logic. The TPS2814D does not include an internal regulator - unlike TPS2811/12/13 - and operates directly from 4 V to 14 V.

Does the TPS2814D have an internal voltage regulator?

No, the TPS2814D does not include an internal voltage regulator. Pins REG_IN and REG_OUT are not functional and must remain unconnected. This distinguishes it from the TPS2811, TPS2812, and TPS2813 variants, which integrate a 10–13 V regulator for operation up to 40 V input. The TPS2814D relies entirely on the external VCC supply (4–14 V) for all logic and output-stage operation.

What is the maximum capacitive load the TPS2814D can drive while maintaining specified timing?

The TPS2814D is characterized for ≤25-ns rise/fall times and ≤40-ns propagation delay with a 1-nF load at VCC = 14 V. While it can drive larger loads (e.g., 10-nF), timing degrades significantly - rise/fall times exceed 50 ns and propagation delay increases beyond 60 ns. For reliable operation within datasheet specs, keep total gate + trace capacitance ≤1 nF per channel, or parallel both outputs to halve effective load per driver.

Can the TPS2814D drive both high-side and low-side N-channel MOSFETs in a half-bridge?

Yes, the TPS2814D can drive both high-side and low-side N-channel MOSFETs in a half-bridge configuration. Its rail-to-rail output swing (VOL ≤ 0.25 V, VOH ≥ 9.75 V at 100 mA) ensures full enhancement and depletion of standard gate thresholds. Use 1IN1/1IN2 for high-side control and 2IN1/2IN2 for low-side, with appropriate level-shifting or isolated supplies for the high-side VCC. The AND logic inherently prevents simultaneous conduction when inputs are coordinated.

What decoupling capacitance is required for stable operation of the TPS2814D?

A minimum 0.1-µF ceramic capacitor must be placed between VCC and GND, as close as possible to the TPS2814D pins. This provides instantaneous current during fast output transitions and suppresses supply rail disturbance. For systems with high di/dt or long supply traces, add a bulk 4.7-µF electrolytic capacitor in parallel. Do not omit the 0.1-µF cap - its absence causes timing jitter, increased shoot-through risk, and potential output oscillation in the TPS2814D.