IRS21864PBF

The IRS21864PBF integrated driver and level shifter is a power management integrated circuit (PMIC) – Gate Driver device produced by Infineon. This particular device serves as an integrated version of a single half-bridge gate driver and a level shifter, which allows it to drive more than one type of signal type. In this article, we will discuss the application field and working principle of the IRS21864PBF.

The IRS21864PBF is designed for the Gate Driver market in applications that require the switching of multiple voltage signals with a level shift between them. The level shift is provided by an integrated full-bridge driver. The device is also suitable for use in a wide range of power management and industrial applications, including DC-DC converters, motor and pump controllers, isolated gate drivers, and others.

The device has an integrated level shifter that provides up to 8V rails for the output signals, and the driver has an adjustable output voltage that covers a wide voltage range from 6V to 20V. It also has integrated protection features such as short-circuit protection, reverse-bias protection and a fault condition detector. It also features integrated linear regulator capacitors, enabling robust operation even under harsh environmental conditions.

The device has an integrated current sensing circuitry that enables accurate output current regulation without additional external components. This feature also provides additional protection against current overload and ensures a reliable operation of the motor. It also has an integrated programmable circuit breaker, which guards against over-current danger.

The IRS21864PBF features Low-Side Gate Driving, which allows for driving of multiple gate voltages in a single device. This feature also reduces the number of external components required. The device also supports several gate pulse width modulation frequencies, from 200Hz to 20 kHz, enabling the device to be used in a wide range of power management applications.

The working principle of the IRS21864PBF is based on the concept of creating a virtual ground rail. The device achieves this by actively switching the output voltage higher and lower in order to effectively split the output voltage difference between two voltage rails. This virtual ground rail then enables the device to switch signals with a level shift instead of needing multiple separate level shifters.

The IRS21864PBF also has several integrated protection features, including an integrated circuit breaker, high current sense protection and an active low side gate drive system. The high current sense protection ensures that the output current does not exceed the maximum rated current in order to prevent the device from over-stressing the system. The low side gate drive system ensures that the device does not release large amounts of energy to the circuit, potentially causing damage.

Overall, the IRS21864PBF is a highly integrated power management integrated circuit (PMIC) – Gate Driver device. It offers an integrated level shifter, adjustable output voltage, protection features and an integrated current sensing circuitry. The integrated protection features allow for reliable operation over a wide range of environmental conditions, making the device well suited for use in power management and industrial applications. Furthermore, its integrated low side gate drive system and high current sense protection further ensure that the device is safe and reliable.