TPS1120DG4

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The TPS1120DG4 is a Dual Channel Low Signal High Side Power Switch with Differential Current Sense. This device is designed to detect the common source current of two high side power MOSFETs, and provide accurate current feedback information to the controller for triggering and sequencing control. The device also has an adjustable shutdown current threshold for enabling current sensing mode. This product is available in a SOIC-8 package and uses an NPN current source as its input stage.

The TPS1120DG4 can be used in applications like advanced digital power supplies, such as lithium ion battery chargers and DC/DC converters, as it requires minimal components and minimizes the power dissipation. What’s more, this device can be used to provide a digital indication of the current load conditions, since it can be integrated in a digital controller.

The TPS1120DG4 is a low-signal, high side power switch with differential current sense. It is a dual-channel switch that supports two MOSFETs in parallel operation. It is designed to detect the common source current of two high side power MOSFETs, and provide accurate current feedback information to the controller for the purposes of triggering and sequencing control. The device also has an adjustable shutdown current threshold for enabling current sensing mode.

The working principle of the TPS1120DG4 is to detect the common source current of two high side power MOSFETs and provide accurate current feedback information to the controller. This integrated circuit is implemented using a high-side NPN current source and some basic diff-amp configuration, as well as many other circuit elements. The signal flow begins in the sources of both MOSFETs. When the current in one of the two MOSFETs increases, the voltage on the source of the other MOSFET decreases, and this imbalance is detected by the diff-amp configuration. This information is then sent to the controller, which can then accurately control the MOSFETs for triggering and sequencing operations.

The TPS1120DG4 can be used in a variety of applications, such as high-side current sensing, advanced digital power supplies, and MOSFETs control. With its low signal level, high current sense accuracy, and small footprint, this device is ideal for high-power applications where current sensing needs to be tightly controlled.

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