IR21814STR

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The IR21814STR is a PMIC—Guard Driver designed to control loads, such as motors, relays, and LEDs with robust, high-speed performance. It features built-in protection to guard against over- and under-current, over-temperature, reverse-battery and transient voltages, providing customers with reliable, cost-effective protection. The IR21814STR requires a wide input supply range of 5.5V to 16V and provides a regulated voltage output at up to 5A. It has a low standby current of less than 3mA. The IR21814STR is a highly efficient design with a peak efficiency of more than 95% at a 300kHz switching frequency.

The IR21814STR can be used in a wide variety of applications, from sensing loads to driving relays and LED panels. It is also capable of driving motors with a PWM frequency that is 100 times higher than the IR21814STR’s switching frequency. This makes the IR21814STR suitable for motion control applications where fast response and precise control of position and speed are required.

At the heart of the IR21814STR is a highly adaptable gate driver architecture that is capable of driving MOSFETs or IGBTs. The IR21814STR supports voltage or current mode operation, as well as pulse-width modulation (PWM) with adjustable dead time and slew rate. This allows the gate driver to be customised to the specific requirements of the application.

The IR21814STR also features a low impedance drive output to minimise switching losses, reduce EMI and enable the use of smaller gate drivers in the design. The driver has a maximum output impedance of 75mΩ, allowing for the use of low power MOSFETS but also providing a fault current trip capability for added safety. The IR21814STR also has built-in monitoring of current, power and temperature providing improved system protection.

The IR21814STR can be combined with a wide-body MOSFET on a single board to create a powerful, efficient and cost-effective motor drive solution. This can be used for applications such as high-efficiency BLDC and stepper motor drives, with the IR21814STR providing a wide range of features and protection. It is designed to minimise the need for external components, improving power efficiency, cost and space savings.

The IR21814STR can also be used to drive multiple loads or multiple motors simultaneously, making it an ideal solution for multi-axis motion control. It also has a low-voltage lockout feature which prevents it from driving the connected load when the operating voltage is too low.

In conclusion, the IR21814STR is an ideal solution for a wide range of applications requiring high-speed, reliable performance. It provides a cost-effective solution for customers, with a wide range of features, including built-in protection, current monitoring and adjustable dead time and slew rate. It is also capable of driving multiple loads or motors, making it an ideal solution for multi-axis motion control. The low-voltage lockout feature also prevents it from driving the connected load when the operating voltage is too low, providing customers with reliable and cost-effective protection.

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