Meets EN55022 Class B EMC standards

Analog Devices announced the release of its new 58VIN step-down µModule regulator, Power by Linear LTM4653.

The LTM4653 operates safely even with uncontrolled or unstable 24V to 48V input power in noisy environments, such as factory automation, industrial robots, telecommunications infrastructure, and aviation systems. By integrating input and output filters into the package, the LTM4653 enables compliance with the EN55022 Class B EMC standard for information technology equipment.

Adopting a low EMI architecture, it is suitable for various signal processing applications such as test and measurement, imaging, and RF systems. The LTM4653 adopts the same architecture as the LTM4651, a 58VIN, 4A inverting µModule regulator. Therefore, using the LTM4651 and LTM4653 in combination allows for the easy generation of a pair of positive and negative voltages in a system.

The output voltage can be adjusted using a single resistor within a range from a minimum of 0.5V to as high as 94% of the input voltage. Due to this wide output voltage range, this single product can provide all common system bus voltages, including 3.3V, 5V, 12V, and 24V.

The peak efficiency at 24VIN, 5VOUT is 92%. The LTM4653 can supply an output current of 4A without a heatsink or air intake up to 70°C under conditions of 48VIN, 5VOUT. If higher current is required depending on the application, multiple devices can be connected in parallel. The switching frequency can be adjusted using a single external resistor or synchronized to an external clock in the range of 250 kHz to 3 MHz.

Since the LTM4653 integrates a switching regulator controller, power switch, inductor, and other supporting components into a 15mm x 9mm x 5.01mm BGA package, a complete design can be achieved by adding only a bulk I/O filter capacitor.