HCPL-T250#060

HCPL-T250#060 is an optically coupled gate driver from Avago Technologies. It is a high-performance isolator IC designed to drive power MOS devices such as Darlington transistors. Featuring Avago’s proprietary EPIC process technology, the chip integrates a planar AlGaAs LED, an open-collector output transistor, and a robust isolation barrier into an 8-pin DIP package.

Application Fields

The HCPL-T250#060 offers excellent electrical characteristics in power switch control and signal level isolation applications, such as in motor control and HVAC systems. It can be used to drive load switching devices, including hot-swap bank and amplifier power switch circuits. It is also suitable for electromechanical equipment and factory automation systems, and can be used to eliminate ground loops and interference.

Working Principle

The HCPL-T250#060 uses light to enable the efficient transmission of power between control and load. The input is optically isolated from the output, which allows for the safe and reliable operation of the device in noisy environments and in the presence of magnetic fields. At the isolated input, an LED is driven by the input current to produce photons, which excite an integrated photodiode. The optically coupled output is driven by the photodiode\'s output, which is cascaded to the output transistor. The output transistor is then switched on or off based on the input signal. The device is designed with an inversely proportional mode, allowing a high input signal to turn the output transistor off and a low input signal turn it on.

Conclusion

The HCPL-T250#060 isolator gate driver is reliable and highly efficient in a wide range of power switch control and signal level isolation applications. The isolation and inversely proportional mode of the chip enable it to accurately and dependably control the switching of high-side and low-side power switches in a given system. The device is perfect for motor control and HVAC systems, power switch circuits, electromechanical systems, and factory automation applications.