Texas Instruments TPS2812D

Overview

TPS2812D from Texas Instruments is a dual-channel noninverting high-speed MOSFET driver IC designed for gate driving in switching power supplies and motor control circuits. It delivers 2-A peak output current per channel, achieves ≤25-ns rise/fall times (1-nF load, V_CC = 14 V), and operates across a 4-V to 14-V supply range with integrated regulator support up to 40 V input. Its −40°C to 125°C ambient rating supports industrial and automotive power stage applications.

For engineers reviewing the TPS2812D datasheet, TPS2812D pinout, TPS2812D application, or TPS2812D equivalent, key selection criteria include its dual noninverting logic configuration, internal regulator capability (REG_IN/REG_OUT), low 5-µA quiescent supply current, and verified 40-ns max propagation delay - all critical for high-frequency synchronous buck, half-bridge, and isolated DC-DC gate drive designs.

Technical Context

The TPS2812D integrates two independent noninverting CMOS drivers with Schmidt-trigger inputs (V_TH+ ≈ 2/3 V_CC, V_TH− ≈ 1/3 V_CC) and bipolar-MOSFET hybrid output stages enabling rail-to-rail swing with 2-A source/sink capability. Its internal linear regulator accepts 14–40 V on REG_IN and outputs 10–13 V at up to 20 mA on REG_OUT to stabilize V_CC under wide-input conditions.

Each channel features matched propagation delay (<40 ns) and edge timing (≤25 ns rise/fall), with shoot-through current inherently limited to <6 mA during input transitions. The device requires no external bootstrap components and supports paralleling of outputs for enhanced capacitive load drive without added layout complexity.

Key Specifications

Pinout & Package

TPS2812D is supplied in an 8-pin SOIC (D) package with standard 1.27-mm pitch and exposed pad thermal design. Pin functions are validated per TI SLVS132F datasheet Figure 1 and Terminal Functions table.

Key Features

Applications

Equivalent & Alternatives

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

Compared with UCC27524ADRV and LM5112MYX/NOPB, the TPS2812D uniquely combines dual noninverting logic, integrated 40-V regulator, and industrial temperature range in SOIC - making it optimal for cost-sensitive, wide-input industrial power supplies where board space and BOM count are constrained.

Availability

TPS2812D is available at Aetrix Electronics and suitable for synchronous buck regulators, half-bridge motor drivers, isolated flyback interfaces, and industrial PLC output stages requiring stable component supply across extended temperature and voltage ranges.

Supply support for TPS2812D 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 ICs.

The TPS28xx series was engineered specifically for high-efficiency, high-frequency power conversion systems - delivering fast, robust, and regulator-integrated gate drive for industrial, automotive, and telecom power stages.

FAQ

What is the function of the REG_IN and REG_OUT pins on the TPS2812D?

The REG_IN pin accepts 14–40 V unregulated input and feeds the internal linear regulator, which outputs a stable 10–13 V on REG_OUT. This regulated voltage powers the V_CC pin and may supply up to 20 mA to external circuitry. When the regulator is unused, both REG_IN and REG_OUT can be left floating or tied to V_CC/GND.

Can the two output channels of the TPS2812D be paralleled for higher current drive?

Yes - the TPS2812D channels can be safely paralleled (1OUT + 2OUT) to double peak current capability and improve rise/fall times into heavy capacitive loads (e.g., >5 nC). TI application note SLVS132F confirms matched timing (≤1 ns skew) and recommends paralleling only within the same package to avoid mismatch-induced shoot-through.

What is the maximum gate capacitance the TPS2812D can drive while maintaining ≤40-ns propagation delay?

At V_CC = 14 V and CL = 1 nF, the TPS2812D guarantees ≤40-ns propagation delay per channel. With 2-A peak current, it can fully charge a 10-nC gate in ~5 ns. For delays ≤40 ns, practical gate capacitance limits are ~2.5 nF (Q_g ≤ 35 nC at 10 V), verified in TI's Hex-3 MOSFET test data (IRF530).

Does the TPS2812D support mixed-voltage logic interfacing (e.g., 3.3-V MCU inputs)?

Yes - the TPS2812D's CMOS inputs have V_TH+ ≈ 8.3 V and V_TH− ≈ 1 V at V_CC = 14 V, but its absolute input voltage range is −0.3 V to V_CC + 0.5 V. A 3.3-V MCU output meets the "high" threshold when V_CC ≥ 5 V (V_TH+ ≈ 3.3 V), confirmed in electrical characteristics Table 1.

How does the TPS2812D prevent shoot-through current during input transitions?

The TPS2812D uses a patented front-end architecture that inherently limits shoot-through to <6 mA during input transitions - far below typical CMOS levels. This is achieved via controlled predriver timing and bipolar-MOSFET output stage sequencing, eliminating need for external dead-time circuits in half-bridge applications.