IR2101

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IR2101 is a high and low side driver, featured by high level of integration, high performance and high cost-effectiveness. It was designed primarily to be used in N-channel MOSFET and IGBT power switching applications. This specialized driver chip is often used in devices such as power converters, motor and solenoid drivers and other industrial control devices. This chip is part of the Pulse Width Modulation Integrated Circuit (PMIC) family, and falls under the category of Gate Drivers.

The IR2101 is a dual high- and low-side driver that can be used to control the two N-channel power switches. It consists of two power control sections, each equipped with a high-side driver and a low-side driver. The high side drivers are always active when power is applied, while the low side drivers are only activated when a high voltage is present. This feature makes it an excellent choice for motor control applications. Additionally, it can be used with IGBTs, meaning that it is not limited to just controlling MOSFETs.

The IR2101 is a low-power, low-voltage chip. This is in contrast to a high side driver like the IR2153, which is a high-power, high-voltage device. The IR2101 operates on a supply voltage of 3.5 - 12V, making it appropriate for many lower power applications. It provides a current source output with a peak output current of 1.5A in each phase. This enables fast switching up to 5MHz in low-power applications, and up to 20kHz in high-power applications.

The two output sections of the IR2101 are high-side and low-side drivers, respectively. It uses an internally compensated Non-overlapping delay logic. This logic allows the output switches to transition from one state to the other without crossing each other, leading to a smoother, more accurate power control. The high side driver also features a built-in UVLO (under voltage lockout) circuit which can be used to prevent the outputs from switching on if the input voltage is below a certain level.

Furthermore, the IR2101 comes with an integral charge pump circuit for gate drive power. This permits the chip to be used in higher voltage applications such as 12V DC motors without the need for an external charge pump.

In summary, the IR2101 is a double-ended N-channel MOSFET and IGBT power switching driver. It provides a high level of integration, excellent performance and cost-effectiveness. It is part of the PMIC family of devices, and falls under the category of Gate Drivers. It operates on a lower supply voltage and provides acceptable switching rates up to 20kHz in high power applications. It also has an integral charge pump circuit for higher voltage applications and a built-in UVLO circuit for safety.

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