The 40v XR79,203 and XR79,206 synchronous step-down COT power modules of MaxLinear combine the controller, driver, inductor, passive components and mosfet into a simple and easy to use QFN package, while occupying a small area and providing high efficiency. Almost no external components are required, which makes the design simple and the time to market fast. All pins are easy to debug and wire, and large pads provide high thermal performance.
The 3 A XR79203 and 6 A XR79206 have a wide input voltage range of 5 V to 40 V, allowing single power operation from 24 V ± 10% of the industrial standard, 18 V to 36 V, and rectifying 18 V (AC) and 24 V (AC) rails. Each device includes a series of protection functions, including over-current, over temperature, short circuit and UVLO. These will help to achieve safe operation under abnormal conditions.
With a proprietary analog current mode constant time (COT) control scheme, each device uses ceramic output capacitors to provide extremely fast line and load transient response. They do not require loop compensation; Therefore, circuit implementation is simplified and the number of overall elements is reduced. The optional power saving mode allows the user to operate in intermittent mode (DCM) under low current load, thereby significantly improving the converter efficiency.
