Integration enables regulator to meet EN55022 class B EMC

Able to operate in noisy environments such as factory automation, industrial robotics, communication infrastructure and avionics systems, Analog Devices has introduced the Power by Linear LTM4653, 58VIN step-down µModule regulator.

The LTM4653 integrates input and output filters in a package, enabling the device to meet the EN55022 Class B EMC standard for information technology equipment. The low EMI architecture makes it suitable for use in signal processing applications, including test and measurement, imaging and RF systems, adds Analog Devices. It has the same architecture as the LTM4651, 58VIN, 4A inverting µModule regulator, and the two can be combined to generate a pair of positive and negative voltages in a system.

The output voltage is adjustable with one resistor from 0.5V to 94 per cent of VIN. This wide output voltage range makes the LTM4653 versatile, and able to generate common system bus voltages of 3.3, 5.0, 12 and 24V. The peak efficiency at 24VIN to 5.0VOUT is 92 per cent. The LTM4653 delivers 4.0A of output current up to 70 degree C ambient at 48VIN to 5.0VOUT without a heat sink or airflow. Multiple devices can be paralleled for higher current applications.

The switching frequency is adjustable by an external single resistor or can be synchronised to an external clock from 250kHz to 3.0MHz.

The LTM4653 houses a switching regulator controller, power switches, inductor and other supporting components in a 15 x 9.0 x 5.01mm BGA package. Only the bulk input and output filter capacitors are needed to complete the design, says Analog Devices.

Operating temperature range is -40 to +125 degree C.

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