High Side Switch Transistor

Part 7 covered using transistors to switch loads that require higher currents or voltages than the microcontroller can handle. All the circuits had similar topologies. Similar to the npn circuit the base is our input and the emitter is tied to a constant voltage.

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With our switch portfolio you can find a protection solution for your inductive capacitive and resistive loads ensuring your design is scalable and robust.

High side switch transistor.

The load was connected to the power source and an npn transistor acted as a switch to ground. Typically these use a pnp bjt or p channel mosfet. For driving the mosfet in high side configuration ir2110 gate driver ic was used. Since the switching element the transistor was at ground it.

With adjustable current limit high accuracy current sense and a wide range of rdsons our smart high side switches provide the optimal solution for your specific use case. Alternatively we can use a pnp transistor to create a high side switch. Profet protected field effect transistors is our high side smart power switch brand. We ll need a more complex circuit to implement a practical high side power on switch.

This transistor connects between v and the load. While designing the ups circuits mosfet were used in the inverter circuits. In addition several protection features are integrated. A gate driver is a specially designed circuit that is used to drive the gate of mosfet or.

This time however the emitter is tied high. Ir2110 is a high low side gate driver ic which is used with power mosfet and igbt. The mosfet were used as high side switches in the circuit. Because of how transistors work these can be a little more difficult to use in an arduino or raspberry pi circuit.

The real switch is still the pnp transistor on the right. For example short circuit protection can protect the mosfet if a short to ground battery occurs. It consists of a mosfet a gate driver with charge pump and multiple protection and diagnosis features. Which means that pnp transistor shown in the first image will always be on regardless of the i o pin state.

The opposite of the low side switch is the high side switch. The circuit above is called a low side switch because the switch our transistor is on the low ground side of the circuit.

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