Op amp drives industrial and automotive loads

STMicroelectronics has introduced the TSB582 dual high-output Amplifier that is designed to simplify circuitry for driving inductive and low-ohmic loads like motors, valves, and rotary resolvers in industrial applications and automotive systems such as steer-by-wire and auto-parking. The TSB582 operational amplifier (op amp) operates from 4-V to 36-V supplies.

The TSB582 consists of two op amps, each capable of sinking/sourcing up to 200 mA. STMicro said this enables direct connection of a load in bridge-tied mode, which allows one TSB582 to replace a discrete solution of two single-channel power op amps or high-current drivers. In addition, by integrating two op amps into one package, the TSB582 can save up to 50% of board space, while lowering the bill of materials.

Op amp drives industrial and automotive loads

(Source: STMicroelectronics)

The TSB582 is available in industrial- and automotive-grade versions. Industrial applications include controlling robot movements and position, conveyor belts, and servo motors. Automotive applications include motor-position sensing including steer-by-wire and electric-traction motors, as well as tracking road-wheel rotation in autonomous driver-assistance systems, and self-driving vehicles.

The op amp features built-in short circuit and over-temperature protection, provides rail-to-rail outputs, and operates up to 3.1-MHz gain-bandwidth (GBW). Both the industrial- and automotive-grade versions are qualified over a temperature range of -40°C to 125°C. They also are EMI hardened and provide ESD robustness up to 4 kV HBM.

The TSB582 is available in two package options, both with low thermal resistance. These are the SO8 with exposed thermal pad and a 3 × 3-mm DFN8 with exposed pad and wettable flanks. The DFN8 is available now in industrial grade. The equivalent in automotive grade and the SO8 package in both grades will be released in the third quarter of 2022.

The TSB582 is part of ST’s 10-years longevity program. Free samples are available ON the ST eStore. The TSB582 is priced at $1.57 for industrial-grade and $1.80 for automotive-qualified versions, in either package style.

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