A2982ELW-T

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A2982ELW-T is a high-performance power distribution switch, load driver and power management integrated circuit (PMIC) developed by Allegro MicroSystems. It can be used as a high-side switch in combination with a low-side switch or two low-side switches to drive multiple loads, such as motors, fans, LEDs and solenoids. The A2982ELW-T has an integrated internal power MOSFET with built-in thermal protection, which can directly support a load current up to 10A.

The A2982ELW-T has several functional blocks, including an internal power MOSFET, the power stage load drivers, logic control, fault protection and a minimum off time control block. The power stage consists of two half bridges (H-fets) and an internal power MOSFET; each half bridge is made up of two high-side driver and two MOSFETs. The power MOSFET is protected by a built-in thermal shutdown.

The logic control block provides a wide range of features to control the A2982ELW-T, including fault reporting, PWM signal reception and error signal generation. The fault reporting block monitors the PWM signal and generates a signal if the signal is too low, too high or if there is any short circuit. The error signal is sent to the logic control block, which then shuts down the power MOSFET.

The minimum off-time control block is used to protect the internal power MOSFETs, by ensuring that the PWM signal is kept low for a minimum amount of time before it is allowed to go high. This prevents aburnt circuit due to recharging of the inductive loads when it is turned off for a long period of time.

The A2982ELW-T is suitable for use in a variety of applications, such as motor control, fan control, DC-DC converter control and automotive body control. It provides a wide range of features and benefits, like improved efficiency and robust design, which make it an ideal choice for most demanding applications.

The A2982ELW-T can be used as a high side switch, in combination with a low side switch, to provide a load current of up to 10A. The two half-bridges and integrated internal power MOSFET, with built-in thermal protection, provide protection against short circuits and over-current. The A2982ELW-T also features fault reporting and monitor, PWM signal reception, error signal generation and minimum off-time control blocks, making it the perfect solution for power management applications.

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