Product News

Compact 20-A Power Module

Exar Corp. recently announced the XR79120, a 20-A single output, synchronous step-down power module in a compact, 12 mm x 14 mm x 4 mm footprint. Even though it’s small, the XR79120 offers more than 93% peak efficiency and leverages Exar’s patented advanced constant on-time (COT) control architecture across a 4.5-to-22-V input voltage range.EX042_XR79120 The easy-to-use XR79120 provides a fully integrated power converter integrating MOSFETs, inductors, and internal input and output capacitors. QFN-based package technology provides noteworthy thermal performance, eases electrical debugging, and improves manufacturability with higher assembly yield and the ability to visually inspect solder joints. At 50°C with no airflow, no thermal de-ratings are required for output voltages of 1.8 V and below.

The XR79120 will be available in a RoHS compliant, green/halogen free, space-saving 74-pin 12 mm × 14 mm × 4 mm QFN package. The XR79120 costs $13.95 in 1,000-piece quantities.

The XR79120’s features include:

•       Fully integrated power supply
•       12 mm × 14 mm × 4 mm QFN package
•       > 93% peak efficiency
•       4.5 to 22 V VIN operating range
•       Patented emulated current mode COT control
•       Exceptional line/load regulation

Source: Exar Corp.

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Compact 20-A Power Module

by Circuit Cellar Staff time to read: 1 min