Texas Instruments TPS2811PWR

Overview

TPS2811PWR from Texas Instruments is a dual inverting high-speed MOSFET driver IC designed for gate-driving n-channel and p-channel power MOSFETs in switching power supplies and motor control circuits. It delivers 2-A peak output current, achieves ≤25-ns rise/fall times (VCC = 14 V, CL = 1 nF), operates across 4–14-V supply range, and features an integrated regulator enabling operation up to 40-V input via REG_IN/REG_OUT pins. It is used in synchronous buck converters and isolated flyback drivers.

For engineers reviewing the TPS2811PWR datasheet, TPS2811PWR pinout, TPS2811PWR application, or TPS2811PWR equivalent, key selection criteria include its dual inverting logic configuration, regulator-enabled high-voltage operation, shoot-through current minimization, and guaranteed −40°C to 125°C ambient operation in the TSSOP-8 package.

Technical Context

The TPS2811PWR implements two independent inverting CMOS drivers with Schmidt-trigger inputs (typical thresholds at ~⅓VCC and ~⅔VCC), minimizing noise susceptibility and eliminating need for external hysteresis. Its output stage combines bipolar and MOSFET transistors in parallel to achieve rail-to-rail swing (0 V to VCC) while sustaining 2-A peak source/sink current.

The integrated linear regulator accepts 14–40 V on REG_IN and delivers a regulated 10–13 V at REG_OUT (up to 20 mA), allowing safe operation of the driver and external circuitry when input voltage exceeds the 14-V VCC rating. REG_IN and REG_OUT are unused in standard 4–14-V applications but must be left open or tied together if not employed.

Key Specifications

Pinout & Package

The TPS2811PWR is housed in an 8-pin TSSOP (PW) package, 3.0 mm × 4.4 mm, 0.65 mm pitch, moisture-sensitive level 1 (MSL-1), RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS2811DR, the TPS2811PWR offers superior board-area efficiency and MSL-1 reliability for automated SMT lines, while the UCC27524ADRV trades regulator capability for higher drive strength-neither is pin-compatible, and all three require distinct PCB layouts and decoupling strategies.

Availability

TPS2811PWR is available at Aetrix Electronics and suitable for synchronous buck converters, isolated flyback drivers, motor gate drivers, and industrial half-bridge control requiring stable component supply across extended temperature and high-reliability production cycles.

Supply support for TPS2811PWR 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-efficiency, high-frequency power conversion systems requiring robust, low-jitter gate drive with integrated voltage regulation-targeting synchronous rectifiers, flyback controllers, and motor drivers.

FAQ

What is the function of the REG_IN and REG_OUT pins on the TPS2811PWR?

The REG_IN and REG_OUT pins on the TPS2811PWR enable operation from input voltages up to 40 V: REG_IN accepts 14–40 V and feeds an internal linear regulator that delivers a stable 10–13 V at REG_OUT (up to 20 mA). This regulated output can power the VCC pin or external circuitry. When unused, both pins may be left unconnected or shorted together and tied to VCC or GND.

Can the TPS2811PWR drive both N-channel and P-channel MOSFETs?

Yes, the TPS2811PWR can drive both N-channel and P-channel MOSFETs. Its rail-to-rail output stage (0 V to VCC) provides strong turn-on and turn-off capability near both supply rails. For high-side N-MOSFETs, it is typically used with a bootstrap or isolated supply; for P-MOSFETs, it directly drives the gate with inverted logic, making it suitable for low-side or simple high-side configurations.

What is the maximum load capacitance the TPS2811PWR can drive while maintaining ≤25-ns rise time?

The TPS2811PWR achieves ≤25-ns rise time with a 1-nF capacitive load at VCC = 14 V. With heavier loads (e.g., 10 nF), rise time degrades to ~45 ns. For optimal performance, keep total gate + trace capacitance ≤1.5 nF. Paralleling both outputs reduces effective rise time by ~30%, extending usable capacitance to ~2.2 nF while retaining sub-25-ns transitions.

Does the TPS2811PWR require external decoupling capacitors, and if so, what values?

Yes, the TPS2811PWR requires external decoupling: a 0.1-µF ceramic capacitor between VCC and GND (placed within 2 mm of the pins), and a 0.1-µF ceramic + 4.7-µF electrolytic pair between REG_OUT and GND. These minimize supply impedance during 2-A transient current pulses and ensure regulator stability and fast switching fidelity.

How does the TPS2811PWR minimize shoot-through current in half-bridge applications?

The TPS2811PWR minimizes shoot-through current through inherent architectural design: its CMOS input stage uses Schmidt-trigger thresholds (~⅓VCC and ~⅔VCC) to prevent metastable states, and its output stage avoids simultaneous conduction via tightly controlled pre-drive timing. Measured shoot-through remains ≤6 mA during input transitions-well below destructive levels-and is further reduced by matching propagation delays (<5 ns skew) between channels.