IR21814S

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The IR21814S is a progressive gate driver for power modules in industries such as mining and automotive. This power module includes all the electrical parameters necessary for switching the PMOS devices quickly and effectively.

The device provides three output stages; driving low, medium and high gate current. The low output stage consists of an output driver and a low side gate pull down transistor. The IR21814S also has two internal output structures that provide over temperature protection and compensation.

Turn-on speed and frequency of the power module are determined by the charge up and discharge current of the gate circuit. The IR21814S utilizes a short pulse control logic to control the input drive current. This control logic allows the power module to reach high frequencies and reduce output voltage droop due to switch resistances.

The output stages are diode isolated. This reduces parasitic voltage spikes, limiting the no-load losses and enabling the power module to operate efficiently. The isolation also reduces thermal resistance from the power module, increasing the output current and power.

The IR21814S has a wide common mode range of 4.5 to 80 volts and is surge tolerant up to 100 volts. This wide common mode range helps reduce noise and EMI generated from the power module and eliminates the need for external EMI suppression. The device also has a flexible thermal protection system that allows the user to specify the operating temperature limit and provide a warning or shut down the power module.

The device also features a fault protection system that can be used to monitor over temperature, over or under voltage, or over current conditions. In cases of any fault, the device will reset itself or alert the user of the fault.

The IR21814S is well suited for the automotive and mining industries where environment and safety are the main concerns. The device ensures reliable gate control with fast switching times and reliable protection features. It is a cost effective solution for controlling power modules in these industries.

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